SN8P2608 8-Bit Micro-Controller SN8P2608 USER’S MANUAL Version 1.4 SONiX 8-Bit Micro-Controller SONIX reserves the right to make change without further notice to any products herein to improve reliability, function or design. SONIX does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. SONIX products are not designed, intended, or authorized for us as components in systems intended, for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SONIX product could create a situation where personal injury or death may occur. Should Buyer purchase or use SONIX products for any such unintended or unauthorized application. Buyer shall indemnify and hold SONIX and its officers, employees, subsidiaries, affiliates and distributors harmless against all claims, cost, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use even if such claim alleges that SONIX was negligent regarding the design or manufacture of the part. SONiX TECHNOLOGY CO., LTD Page 1 Version 1.4 SN8P2608 8-Bit Micro-Controller AMENDENT HISTORY Version Date VER 0.1~0.3 June. 2004 V0.1 ~ V0.3 is short form only. VER 0.4 VER 0.5 July. 2004 July. 2004 VER 0.6 VER 1.0 July. 2004 Dec. 2004 VER 1.1 Jan. 2005 Complete version first issue, 1. Change the description of ”S” parameter in all instruction cycle related explanation. 2. Cancel the “B0MOV M, I” and “B0XCH A, M” instruction limitation. Remove all TC0 description and modify programming information. 1. Add T0, TC1, PWM application notices. 2. T0C doesn’t support read and modify write instructions. 3. Modify operating mode, stack, reset, I/O, programming pins diagrams. 4. Modify timer, system clock descriptions. 5. Modify system clock description. 6. Remove ORG4~7 limitation. 1. Re-arrange partial edition layout. 2. Strongly recommend using SN8ICE-2K ICE to emulate SN8P2608. SN8IDE V1.99S or later No More support SN8P2000 series emulation. 1. ADD Brown-Out reset circuit. 2. ADD Working Voltage vs. Frequency graphs. 1. Modify Topr value. 2. Modify Brown-Out Reset description 3. Remove power consumption(Pc) 4. Remove Noise Filter Enable Working Voltage 5. Modify M2IDE 1.07 6. Remove High clock32K mode 7. Modify ELECTRICAL CHARACTERISTIC. 1. Add Marking Definition. 2. Modify ELECTRICAL CHARACTERISTIC. 3. Modify RST/P4.7/VPP PIN DISCRIPTION. 1. Remove DIP48 package. Nov.2005 VER 1.2 Dec 2005 VER 1.3 Feb. 2007 VER 1.4 Sep. 2007 Description SONiX TECHNOLOGY CO., LTD Page 2 Version 1.4 SN8P2608 8-Bit Micro-Controller Table of Content AMENDENT HISTORY................................................................................................................................ 2 11 PRODUCT OVERVIEW......................................................................................................................... 7 1.1 1.2 1.3 1.4 1.5 22 FEATURES ........................................................................................................................................ 7 SYSTEM BLOCK DIAGRAM .......................................................................................................... 8 PIN ASSIGNMENT ........................................................................................................................... 9 PIN DESCRIPTIONS....................................................................................................................... 10 PIN CIRCUIT DIAGRAMS............................................................................................................. 11 CENTRAL PROCESSOR UNIT (CPU) .............................................................................................. 12 2.1 MEMORY MAP............................................................................................................................... 12 2.1.1 PROGRAM MEMORY (ROM) ................................................................................................. 12 2.1.1.1 RESET VECTOR (0000H) .................................................................................................. 13 2.1.1.2 INTERRUPT VECTOR (0008H)......................................................................................... 14 2.1.1.3 LOOK-UP TABLE DESCRIPTION.................................................................................... 16 2.1.1.4 JUMP TABLE DESCRIPTION ........................................................................................... 18 2.1.1.5 CHECKSUM CALCULATION........................................................................................... 20 2.1.2 CODE OPTION TABLE ........................................................................................................... 21 2.1.3 DATA MEMORY (RAM)........................................................................................................... 22 2.1.4 SYSTEM REGISTER................................................................................................................. 23 2.1.4.1 SYSTEM REGISTER TABLE ............................................................................................ 23 2.1.4.2 BIT DEFINITION of SYSTEM REGISTER....................................................................... 24 2.1.4.3 ACCUMULATOR ............................................................................................................... 25 2.1.4.4 PROGRAM FLAG ............................................................................................................... 26 2.1.4.5 PROGRAM COUNTER....................................................................................................... 28 2.1.4.6 H, L REGISTERS................................................................................................................. 31 2.1.4.7 Y, Z REGISTERS................................................................................................................. 32 2.1.4.8 R REGISTERS ..................................................................................................................... 33 2.2 ADDRESSING MODE .................................................................................................................... 34 2.2.1 IMMEDIATE ADDRESSING MODE....................................................................................... 34 2.2.2 DIRECTLY ADDRESSING MODE .......................................................................................... 34 2.2.3 INDIRECTLY ADDRESSING MODE ...................................................................................... 34 2.3 STACK OPERATION...................................................................................................................... 36 2.3.1 2.3.2 2.3.3 33 OVERVIEW .............................................................................................................................. 36 STACK REGISTERS ................................................................................................................. 37 STACK OPERATION EXAMPLE............................................................................................. 38 RESET ..................................................................................................................................................... 39 SONiX TECHNOLOGY CO., LTD Page 3 Version 1.4 SN8P2608 8-Bit Micro-Controller 3.1 3.2 3.3 3.4 OVERVIEW..................................................................................................................................... 39 POWER ON RESET......................................................................................................................... 40 WATCHDOG RESET...................................................................................................................... 40 BROWN OUT RESET ..................................................................................................................... 41 3.4.1 BROWN OUT DESCRIPTION ................................................................................................. 41 3.4.2 THE SYSTEM OPERATING VOLTAGE DECSRIPTION........................................................ 42 3.4.3 BROWN OUT RESET IMPROVEMENT.................................................................................. 42 3.5 EXTERNAL RESET ........................................................................................................................ 44 3.6 EXTERNAL RESET CIRCUIT ....................................................................................................... 44 44 3.6.1 Simply RC Reset Circuit ........................................................................................................... 44 3.6.2 3.6.3 3.6.4 3.6.5 Diode & RC Reset Circuit ........................................................................................................ 45 Zener Diode Reset Circuit ........................................................................................................ 45 Voltage Bias Reset Circuit........................................................................................................ 46 External Reset IC...................................................................................................................... 47 SYSTEM CLOCK .................................................................................................................................. 48 4.1 4.2 4.3 4.4 OVERVIEW..................................................................................................................................... 48 CLOCK BLOCK DIAGRAM .......................................................................................................... 48 OSCM REGISTER ........................................................................................................................... 49 SYSTEM HIGH CLOCK ................................................................................................................. 50 4.4.1 EXTERNAL HIGH CLOCK...................................................................................................... 50 4.4.1.1 CRYSTAL/CERAMIC......................................................................................................... 51 4.4.1.2 RC......................................................................................................................................... 51 4.4.1.3 EXTERNAL CLOCK SIGNAL........................................................................................... 52 4.5 SYSTEM LOW CLOCK .................................................................................................................. 53 4.5.1 55 SYSTEM OPERATION MODE ........................................................................................................... 55 5.1 5.2 OVERVIEW..................................................................................................................................... 55 SYSTEM MODE SWITCHING....................................................................................................... 56 5.3 WAKEUP ......................................................................................................................................... 58 5.3.1 5.3.2 5.3.3 66 SYSTEM CLOCK MEASUREMENT ........................................................................................ 54 OVERVIEW .............................................................................................................................. 58 WAKEUP TIME........................................................................................................................ 58 P1W WAKEUP CONTROL REGISTER ................................................................................... 58 INTERRUPT........................................................................................................................................... 59 6.1 6.2 6.3 6.4 6.5 OVERVIEW..................................................................................................................................... 59 INTEN INTERRUPT ENABLE REGISTER................................................................................... 60 INTRQ INTERRUPT REQUEST REGISTER ................................................................................ 61 GIE GLOBAL INTERRUPT OPERATION .................................................................................... 61 PUSH, POP ROUTINE .................................................................................................................... 62 SONiX TECHNOLOGY CO., LTD Page 4 Version 1.4 SN8P2608 8-Bit Micro-Controller 6.6 6.7 6.8 6.9 6.10 77 INT0 (P0.0) INTERRUPT OPERATION......................................................................................... 63 INT1 (P0.1) INTERRUPT OPERATION......................................................................................... 64 T0 INTERRUPT OPERATION ....................................................................................................... 65 TC1 INTERRUPT OPERATION..................................................................................................... 66 MULTI-INTERRUPT OPERATION............................................................................................... 67 I/O PORT ................................................................................................................................................ 68 7.1 7.2 7.3 7.4 88 I/O PORT MODE ............................................................................................................................. 68 I/O PULL UP REGISTER ................................................................................................................ 70 I/O OPEN-DRAIN REGISTER........................................................................................................ 71 I/O PORT DATA REGISTER .......................................................................................................... 72 TIMERS .................................................................................................................................................. 73 8.1 8.2 WATCHDOG TIMER...................................................................................................................... 73 TIMER 0 (T0) ................................................................................................................................... 75 8.2.1 OVERVIEW .............................................................................................................................. 75 8.2.2 T0M MODE REGISTER........................................................................................................... 75 8.2.3 T0C COUNTING REGISTER................................................................................................... 76 8.2.4 T0 TIMER OPERATION SEQUENCE ..................................................................................... 77 8.2.5 T0 TIMER NOTICE .................................................................................................................. 78 8.3 TIMER/COUNTER 1 (TC1) ............................................................................................................ 79 8.3.1 OVERVIEW .............................................................................................................................. 79 8.3.2 TC1M MODE REGISTER ........................................................................................................ 80 8.3.3 TC1C COUNTING REGISTER ................................................................................................ 81 8.3.4 TC1R AUTO-LOAD REGISTER .............................................................................................. 82 8.3.5 TC1 CLOCK FREQUENCY OUTPUT (BUZZER) .................................................................. 83 8.3.6 TC1 TIMER OPERATION SEQUENCE .................................................................................. 84 8.3.7 TC1 TIMER NOTICE ............................................................................................................... 85 8.4 PWM1 MODE .................................................................................................................................. 85 8.4.1 8.4.2 8.4.3 8.4.4 99 OVERVIEW .............................................................................................................................. 86 TC1IRQ AND PWM DUTY ...................................................................................................... 87 PWM PROGRAM EXAMPLE .................................................................................................. 88 PWM1 DUTY CHANGING NOTICE ....................................................................................... 89 INSTRUCTION TABLE ....................................................................................................................... 91 1100 ELECTRICAL CHARACTERISTIC .............................................................................................. 92 10.1 ABSOLUTE MAXIMUM RATING ................................................................................................ 92 10.2 10.3 ELECTRICAL CHARACTERISTIC............................................................................................... 92 CHARACTERISTIC GRAPHS ....................................................................................................... 93 1111 APPLICATION NOTICE ................................................................................................................. 94 SONiX TECHNOLOGY CO., LTD Page 5 Version 1.4 SN8P2608 8-Bit Micro-Controller 11.1 DEVELOPMENT TOOL VERSION ......................................................................................................... 94 11.1.1 ICE (In circuit emulation) ........................................................................................................ 94 11.1.2 OTP Writer ............................................................................................................................... 94 11.1.3 SN8IDE..................................................................................................................................... 94 11.2 CODE OPTION................................................................................................................................ 95 11.2.1 NOISE FILTER CODE OPTION ............................................................................................. 95 11.2.2 WATCHDOG ............................................................................................................................ 95 11.3 INTERRUPT VECTOR (ORG 8)..................................................................................................... 96 11.4 S8KD-2 ICE ENULATION.............................................................................................................. 97 11.4.1 ICE_MODE .............................................................................................................................. 97 11.4.2 INSTRUCTION CYCLE............................................................................................................ 98 11.4.3 SYSTEM CLOCK.................................................................................................................... 100 11.4.4 WATCHDOG TIMER ............................................................................................................. 101 11.4.5 P0 EMULATION .................................................................................................................... 102 11.4.5.1 @P0n_MODE ................................................................................................................ 102 11.4.5.2 @P0n_OUT .................................................................................................................... 102 11.4.5.3 PEDGE ........................................................................................................................... 103 11.4.6 11.4.7 1122 PWM DUTY............................................................................................................................ 104 OTHER MACRO..................................................................................................................... 105 OTP PROGRAMMING PIN........................................................................................................... 106 12.1.1 12.1.2 12.1.3 1133 The pin assignment of Easy Writer transition board socket: ................................................. 106 The pin assignment of Writer V3.0 and V2.5 transition board socket: .................................. 106 SN8P2608/SN8P2606 Programming Pin Mapping: .............................................................. 107 PACKAGE INFORMATION ......................................................................................................... 108 13.1 13.2 1144 SSOP 48 PIN................................................................................................................................... 108 P-DIP 40 PIN .................................................................................................................................. 109 MARKING DEFINITION............................................................................................................... 110 14.1 14.2 INTRODUCTION .......................................................................................................................... 110 MARKING INDETIFICATION SYSTEM.................................................................................... 110 14.3 14.4 MARKING EXAMPLE ................................................................................................................. 111 DATECODE SYSTEM .................................................................................................................. 111 SONiX TECHNOLOGY CO., LTD Page 6 Version 1.4 SN8P2608 8-Bit Micro-Controller 1 PRODUCT OVERVIEW 1.1 FEATURES ♦ Memory configuration OTP ROM size: 6K * 16 bits. RAM size: 128 * 8 bits. Eight levels stack buffer ♦ I/O pin configuration Bi-directional: P0, P1, P2, P4, P5 Input only: P4.7 shared with reset pin. Programmable open-drain: P1.0, P1.1 Wakeup: P0, P1 level change trigger Pull-up resisters: P0, P1, P2, P4, P5 External Interrupt trigger edge: P0.0 controlled by PEDGE register P0.1 is falling edge trigger only ♦ Powerful instructions One clocks per instruction cycle (1T) Most of instructions are one cycle only. All ROM area JMP instruction. All ROM area CALL address instruction. All ROM area lookup table function (MOVC) ) ♦ Four interrupt sources Two internal interrupts: T0, TC1. Two external interrupts: INT0, INT1. ♦ Two 8-bit Timer/Counter T0: Basic timer TC1: Auto-reload timer/Counter/PWM1/Buzzer output ♦ On chip watchdog timer and clock source is internal low clock RC type (16KHz @3V, 32KHz @5V). ♦ Dual system clocks External high clock: RC type up to 10 MHz External high clock: Crystal type up to 16 MHz Internal low clock: RC type 16KHz(3V), 32KHz(5V) ♦ Operating modes Normal mode: Both high and low clock active Slow mode: Low clock only Sleep mode: Both high and low clock stop Green mode: Periodical wakeup by T0 timer ♦ Package (Chip form support) P-DIP 40 pins SSOP 48 pins Features Selection Table Timer CHIP ROM RAM Stack SN8P2606 6K*16 128 SN8P2608 6K*16 128 8 T0 V TC1 V 8 V V SONiX TECHNOLOGY CO., LTD I/O 34 40 Green PWM Wakeup Mode Buzzer Pin No. V 16 V V Page 7 V 16 Package P-DIP 40 SSOP 48 Version 1.4 SN8P2608 8-Bit Micro-Controller 1.2 SYSTEM BLOCK DIAGRAM SN8P2608/2606 PC R O M IR FLAGS H-OSC Internal Low RC TIMING GENERATOR ALU RAM ACC POR Watch Dog PWM PWM & BUZZER SYSTEM REGISTER INTERRUPT CONTROL TIMER & COUNTER PORT 0 PORT 1 SONiX TECHNOLOGY CO., LTD PORT 2 PORT 4 Page 8 PORT 5 Version 1.4 SN8P2608 8-Bit Micro-Controller 1.3 PIN ASSIGNMENT SN8P2606P (P-DIP 40 pins) RST/VPP/P4.7 P1.1 P1.2 P1.3 P1.4 P0.1/INT1 P1.5 P1.6 P1.7 P4.0 VDD VSS XIN XOUT/Fcpu P4.2 P5.5 P5.4 P5.3/PWM1/BZ1 P5.2 P5.1 1 U 40 2 39 3 38 4 37 5 36 6 35 7 34 8 33 9 32 10 31 11 30 12 29 13 28 14 27 15 26 16 25 17 24 18 23 19 22 20 21 SN8P2606P P1.0 P0.7 P0.6 P0.5 P0.4 P0.3 P0.2 P0.0/INT0 VDD VSS P2.7 P2.6 P2.5 P2.4 P2.3 P2.2 P2.1 P2.0 P5.6 P5.0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 P0.7 P0.6 P0.5 P4.6 P4.5 P0.4 P0.3 P0.2 P0.0/INT0 VDD NC NC VSS P2.7 P2.6 P2.5 P2.4 P2.3 P2.2 P2.1 P2.0 P5.6 P5.7 P5.0 SN8P2608X (SSOP 48 pins) P1.0 RST/VPP/P4.7 P1.1 P1.2 P1.3 P1.4 P0.1/INT1 P1.5 P1.6 P1.7 P4.0 P4.1 VDD VSS XIN XOUT/Fcpu P4.2 P4.3 P4.4 P5.5 P5.4 P5.3/PWM1/BZ1 P5.2 P5.1 U 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 SN8P2608X SONiX TECHNOLOGY CO., LTD Page 9 Version 1.4 SN8P2608 8-Bit Micro-Controller 1.4 PIN DESCRIPTIONS PIN NAME VDD, VSS TYPE P P4.7/RST/VPP I, P XIN I XOUT/Fcpu I/O P0.0/INT0 I/O P0.1/INT1 I/O P0.2~P0.7 I/O P1.0~P1.1 I/O P1.2~P1.7 I/O P2.0~P2.7 I/O P4.0~P4.6 I/O P5.0~P5.2, P5.4~P5.7 I/O P5.3/BZ1/PWM1 I/O DESCRIPTION Power supply input pins for digital circuit. P4.7: Input only pin (Schmitt trigger) if disable external reset function. P4.7 without build-in pull-up resister. P4.7 is input only pin without pull-up resistor under P4.7 mode. Add the 100 ohm external resistor on P4.7, when it is set to be input pin. RST: System reset input pin. Schmitt trigger structure, low active, normal stay to “high”. VPP: OTP programming pin. Oscillator input pin while external oscillator enable (crystal and RC). XOUT: Oscillator output pin while external crystal enable. Fcpu: Signal output pin while external RC mode enable. Port 0.0 bi-direction pin. Schmitt trigger structure as input mode. Built-in pull-up resisters. INT0 trigger pin (Schmitt trigger). Port 0.1 bi-direction pin. Schmitt trigger structure as input mode. Built-in pull-up resisters. INT1 trigger pin (Schmitt trigger). TC1 event counter clock input pin. Bi-direction pin. Schmitt trigger structure as input mode. Built-in pull-up resisters. Port 1.0, P1.1 bi-direction pin and open-drain pin. Schmitt trigger structure as input mode. Built-in pull-up resisters. Bi-direction pin. Schmitt trigger structure as input mode. Built-in pull-up resisters. Bi-direction pin. Schmitt trigger structure as input mode. Built-in pull-up resisters. Bi-direction pin. Schmitt trigger structure as input mode. Built-in pull-up resisters. Bi-direction pin. Schmitt trigger structure as input mode. Built-in pull-up resisters. Port 5.3 bi-direction pin. Schmitt trigger structure as input mode. Built-in pull-up resisters. TC1 ÷ 2 signal output pin for buzzer or PWM1 output pin. SONiX TECHNOLOGY CO., LTD Page 10 Version 1.4 SN8P2608 8-Bit Micro-Controller 1.5 PIN CIRCUIT DIAGRAMS Port 0, 1, 2, 4, 5 structure: Pull-Up PnM PnM, PnUR Input Bus Pin Output Latch Output Bus Port 1.0, P1.1 structure: Pull-Up PnM PnM, PnUR Input Bus Pin Output Latch Output Bus Open-Drain P1OC Port 4.7 structure: Ext. Reset Code Option Int. Bus Pin SONiX TECHNOLOGY CO., LTD Int. Rst Page 11 Version 1.4 SN8P2608 8-Bit Micro-Controller 2 CENTRAL PROCESSOR UNIT (CPU) 2.1 MEMORY MAP 2.1.1 PROGRAM MEMORY (ROM) ) 6K words ROM 0000H 0001H 0002H 0003H 0004H 0005H 0006H 0007H 0008H 0009H . . 000FH 0010H 0011H . . . . . 17FBH 17FCH 17FDH 17FEH 17FFH SONiX TECHNOLOGY CO., LTD ROM Reset vector General purpose area User reset vector Jump to user start address Jump to user start address Jump to user start address General purpose area Interrupt vector User interrupt vector User program General purpose area End of user program Reserved Page 12 Version 1.4 SN8P2608 8-Bit Micro-Controller 2.1.1.1 RESET VECTOR (0000H) A one-word vector address area is used to execute system reset. ) Power On Reset (NT0=1, NPD=0). ) Watchdog Reset (NT0=0, NPD=0). ) External Reset (NT0=1, NPD=1). After power on reset, external reset or watchdog timer overflow reset, then the chip will restart the program from address 0000h and all system registers will be set as default values. It is easy to know reset status from NT0, NPD flags of PFLAG register. The following example shows the way to define the reset vector in the program memory. ¾ Example: Defining Reset Vector ORG JMP … 0 START ORG 10H START: … … ENDP SONiX TECHNOLOGY CO., LTD ; 0000H ; Jump to user program address. ; 0010H, The head of user program. ; User program ; End of program Page 13 Version 1.4 SN8P2608 8-Bit Micro-Controller 2.1.1.2 INTERRUPT VECTOR (0008H) A 1-word vector address area is used to execute interrupt request. If any interrupt service executes, the program counter (PC) value is stored in stack buffer and jump to 0008h of program memory to execute the vectored interrupt. Users have to define the interrupt vector and the first instruction at ORG 8 must be “JMP” or “NOP”. The following example shows the way to define the interrupt vector in the program memory. Note: ”PUSH”, “POP” instructions save and load ACC/PFLAG without (NT0, NPD). PUSH/POP buffer is a unique buffer and only one level. Note: The first instruction at ORG 8 must be “JMP” or “NOP”. ¾ Example: Defining Interrupt Vector. The interrupt service routine is following ORG 8. .CODE ORG JMP … 0 START ; 0000H ; Jump to user program address. ORG NOP PUSH … … POP RETI … 8 ; Interrupt vector. ; The first instruction at ORG 8. ; Save ACC and PFLAG register to buffers. ; Load ACC and PFLAG register from buffers. ; End of interrupt service routine START: … … JMP … ; The head of user program. ; User program START ENDP SONiX TECHNOLOGY CO., LTD ; End of user program ; End of program Page 14 Version 1.4 SN8P2608 8-Bit Micro-Controller ¾ Example: Defining Interrupt Vector. The interrupt service routine is following user program. .DATA ACCBUF DS 1 PFLAGBUF DS 1 ; Define ACCBUF for store ACC data. ; Define PFLAGBUF for store PFLAG data. ORG JMP … ORG JMP 0 START ; 0000H ; Jump to user program address. 8 MY_IRQ ; Interrupt vector. ; 0008H, Jump to interrupt service routine address. ORG 10H .CODE START: … … … JMP … ; 0010H, The head of user program. ; User program. START MY_IRQ: PUSH … … POP RETI … ENDP ; End of user program. ;The head of interrupt service routine. ; Save ACC and PFLAG register to buffers. ; Load ACC and PFLAG register from buffers. ; End of interrupt service routine. ; End of program. Note: It is easy to understand the rules of SONIX program from demo programs given above. These points are as following: 1. The address 0000H is a “JMP” instruction to make the program starts from the beginning. 2. The address 0008H is interrupt vector and the first instruction must be “NOP” or “JMP”. 3. User’s program is a loop routine for main purpose application. SONiX TECHNOLOGY CO., LTD Page 15 Version 1.4 SN8P2608 8-Bit Micro-Controller 2.1.1.3 LOOK-UP TABLE DESCRIPTION In the ROM’s data lookup function, Y register is pointed to middle byte address (bit 8~bit 15) and Z register is pointed to low byte address (bit 0~bit 7) of ROM. After MOVC instruction executed, the low-byte data will be stored in ACC and high-byte data stored in R register. ¾ Example: To look up the ROM data located “TABLE1”. @@: TABLE1: B0MOV B0MOV MOVC Y, #TABLE1$M Z, #TABLE1$L INCMS JMP INCMS NOP Z @F Y MOVC … DW DW DW … 0035H 5105H 2012H ; To set lookup table1’s middle address ; To set lookup table1’s low address. ; To lookup data, R = 00H, ACC = 35H ; Increment the index address for next address. ; Z+1 ; Z is not overflow. ; Z overflow (FFH Æ 00), Æ Y=Y+1 ; ; ; To lookup data, R = 51H, ACC = 05H. ; ; To define a word (16 bits) data. Note: The Y register will not increase automatically when Z register crosses boundary from 0xFF to 0x00. Therefore, user must take care such situation to avoid look-up table errors. If Z register overflows, Y register must be added one. The following INC_YZ macro shows a simple method to process Y and Z registers automatically. ¾ Example: INC_YZ macro. INC_YZ MACRO INCMS JMP INCMS NOP Z @F ; Z+1 ; Not overflow Y ; Y+1 ; Not overflow @@: ENDM SONiX TECHNOLOGY CO., LTD Page 16 Version 1.4 SN8P2608 8-Bit Micro-Controller ¾ Example: Modify above example by “INC_YZ” macro. B0MOV B0MOV MOVC Y, #TABLE1$M Z, #TABLE1$L INC_YZ @@: TABLE1: MOVC … DW DW DW … 0035H 5105H 2012H ; To set lookup table1’s middle address ; To set lookup table1’s low address. ; To lookup data, R = 00H, ACC = 35H ; Increment the index address for next address. ; ; To lookup data, R = 51H, ACC = 05H. ; ; To define a word (16 bits) data. The other example of look-up table is to add Y or Z index register by accumulator. Please be careful if “carry” happen. ¾ Example: Increase Y and Z register by B0ADD/ADD instruction. B0MOV B0MOV Y, #TABLE1$M Z, #TABLE1$L ; To set lookup table’s middle address. ; To set lookup table’s low address. B0MOV B0ADD A, BUF Z, A ; Z = Z + BUF. B0BTS1 JMP INCMS NOP FC GETDATA Y ; Check the carry flag. ; FC = 0 ; FC = 1. Y+1. GETDATA: ; ; To lookup data. If BUF = 0, data is 0x0035 ; If BUF = 1, data is 0x5105 ; If BUF = 2, data is 0x2012 MOVC … TABLE1: DW DW DW … 0035H 5105H 2012H SONiX TECHNOLOGY CO., LTD ; To define a word (16 bits) data. Page 17 Version 1.4 SN8P2608 8-Bit Micro-Controller 2.1.1.4 JUMP TABLE DESCRIPTION The jump table operation is one of multi-address jumping function. Add low-byte program counter (PCL) and ACC value to get one new PCL. If PCL is overflow after PCL+ACC, PCH adds one automatically. The new program counter (PC) points to a series jump instructions as a listing table. It is easy to make a multi-jump program depends on the value of the accumulator (A). Note: PCH only support PC up counting result and doesn’t support PC down counting. When PCL is carry after PCL+ACC, PCH adds one automatically. If PCL borrow after PCL–ACC, PCH keeps value and not change. ¾ Example: Jump table. ORG 0X0100 ; The jump table is from the head of the ROM boundary B0ADD JMP JMP JMP JMP PCL, A A0POINT A1POINT A2POINT A3POINT ; PCL = PCL + ACC, PCH + 1 when PCL overflow occurs. ; ACC = 0, jump to A0POINT ; ACC = 1, jump to A1POINT ; ACC = 2, jump to A2POINT ; ACC = 3, jump to A3POINT SONIX provides a macro for safe jump table function. This macro will check the ROM boundary and move the jump table to the right position automatically. The side effect of this macro maybe wastes some ROM size. ¾ Example: If “jump table” crosses over ROM boundary will cause errors. @JMP_A MACRO IF JMP ORG ENDIF ADD ENDM VAL (($+1) !& 0XFF00) !!= (($+(VAL)) !& 0XFF00) ($ | 0XFF) ($ | 0XFF) PCL, A Note: “VAL” is the number of the jump table listing number. SONiX TECHNOLOGY CO., LTD Page 18 Version 1.4 SN8P2608 8-Bit Micro-Controller ¾ Example: “@JMP_A” application in SONIX macro file called “MACRO3.H”. B0MOV @JMP_A JMP JMP JMP JMP JMP A, BUF0 5 A0POINT A1POINT A2POINT A3POINT A4POINT ; “BUF0” is from 0 to 4. ; The number of the jump table listing is five. ; ACC = 0, jump to A0POINT ; ACC = 1, jump to A1POINT ; ACC = 2, jump to A2POINT ; ACC = 3, jump to A3POINT ; ACC = 4, jump to A4POINT If the jump table position is across a ROM boundary (0x00FF~0x0100), the “@JMP_A” macro will adjust the jump table routine begin from next RAM boundary (0x0100). ¾ Example: “@JMP_A” operation. ; Before compiling program. ROM address 0X00FD 0X00FE 0X00FF 0X0100 0X0101 B0MOV @JMP_A JMP JMP JMP JMP JMP A, BUF0 5 A0POINT A1POINT A2POINT A3POINT A4POINT ; “BUF0” is from 0 to 4. ; The number of the jump table listing is five. ; ACC = 0, jump to A0POINT ; ACC = 1, jump to A1POINT ; ACC = 2, jump to A2POINT ; ACC = 3, jump to A3POINT ; ACC = 4, jump to A4POINT A, BUF0 5 A0POINT A1POINT A2POINT A3POINT A4POINT ; “BUF0” is from 0 to 4. ; The number of the jump table listing is five. ; ACC = 0, jump to A0POINT ; ACC = 1, jump to A1POINT ; ACC = 2, jump to A2POINT ; ACC = 3, jump to A3POINT ; ACC = 4, jump to A4POINT ; After compiling program. ROM address 0X0100 0X0101 0X0102 0X0103 0X0104 B0MOV @JMP_A JMP JMP JMP JMP JMP SONiX TECHNOLOGY CO., LTD Page 19 Version 1.4 SN8P2608 8-Bit Micro-Controller 2.1.1.5 CHECKSUM CALCULATION The last ROM address are reserved area. User should avoid these addresses (last address) when calculate the Checksum value. ¾ Example: The demo program shows how to calculated Checksum from 00H to the end of user’s code. MOV B0MOV MOV B0MOV CLR CLR A,#END_USER_CODE$L END_ADDR1, A ; Save low end address to end_addr1 A,#END_USER_CODE$M END_ADDR2, A ; Save middle end address to end_addr2 Y ; Set Y to 00H Z ; Set Z to 00H MOVC B0BSET ADD MOV ADC JMP FC DATA1, A A, R DATA2, A END_CHECK ; Clear C flag ; Add A to Data1 INCMS JMP JMP Z @B Y_ADD_1 ; Z=Z+1 ; If Z != 00H calculate to next address ; If Z = 00H increase Y MOV CMPRS JMP MOV CMPRS JMP JMP A, END_ADDR1 A, Z AAA A, END_ADDR2 A, Y AAA CHECKSUM_END ; If Yes, check if Y = middle end address ; If Not jump to checksum calculate ; If Yes checksum calculated is done. INCMS NOP JMP Y ; Increase Y @B ; Jump to checksum calculate @@: ; Add R to Data2 ; Check if the YZ address = the end of code AAA: END_CHECK: ; Check if Z = low end address ; If Not jump to checksum calculate Y_ADD_1: CHECKSUM_END: … … END_USER_CODE: SONiX TECHNOLOGY CO., LTD ; Label of program end Page 20 Version 1.4 SN8P2608 8-Bit Micro-Controller 2.1.2 CODE OPTION TABLE Code Option Content RC High_Clk 12M X’tal 4M X’tal Always_On Watch_Dog Enable Disable Fosc/1 Fcpu Reset_Pin Security Noise_Filter Fosc/2 Fosc/4 Fosc/8 Reset P47 Enable Disable Enable Disable Function Description Low cost RC for external high clock oscillator and XOUT becomes to Fcpu output pin. High speed crystal /resonator (e.g. 12MHz) for external high clock oscillator. Standard crystal /resonator (e.g. 4M) for external high clock oscillator. Watchdog timer always on even in power down and green mode. Enable watchdog timer. Watchdog timer stops in power down mode and green mode. Disable Watchdog function. Instruction cycle is oscillator clock. Notice: In Fosc/1, Noise Filter must be disabled. Instruction cycle is 2 oscillator clocks. Notice: In Fosc/2, Noise Filter must be disabled. Instruction cycle is 4 oscillator clocks. Instruction cycle is 8 oscillator clocks. Enable External reset pin. Enable P4.7 input only without pull-up resister. Enable ROM code Security function. Disable ROM code Security function. Enable Noise Filter and the Fcpu is Fosc/4~Fosc/8. Disable Noise Filter and the Fcpu is Fosc/1~Fosc/8. Note: 1. In high noisy environment, enable “Noise Filter” and set Watch_Dog as “Always_On” is strongly recommended. Enable “Noise_Filter” will limit the Fcpu = Fosc/4 ~ Fosc/8. 2. If users define watchdog as “Always_On”, assembler will Enable “Watch_Dog” automatically. 3. Fcpu code option is only available for High Clock. Fcpu of slow mode is Fosc/4 (the Fosc is internal low clock). SONiX TECHNOLOGY CO., LTD Page 21 Version 1.4 SN8P2608 8-Bit Micro-Controller 2.1.3 DATA MEMORY (RAM) ) 128 X 8-bit RAM BANK 0 Address 000h “ “ “ “ “ 07Fh 080h “ “ “ “ “ 0FFh SONiX TECHNOLOGY CO., LTD RAM location General purpose area 080h~0FFh of Bank 0 store system registers (128 bytes). System register End of bank 0 area Page 22 Version 1.4 SN8P2608 8-Bit Micro-Controller 2.1.4 SYSTEM REGISTER 2.1.4.1 8 9 A B C D E F SYSTEM REGISTER TABLE 0 1 2 3 4 5 6 7 8 9 A B C D E F L H R Z Y - PFLAG - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - P0M - - - - - - PEDGE P1W P1M P2M - P4M P5M - - INTRQ INTEN OSCM - WDTR - PCL PCH P0 P1 P2 - P4 P5 - - T0M T0C - - TC1M TC1C TC1R STKP P0UR P1UR P2UR - P4UR P5UR @HL @YZ P1OC - - - - - - STK7L STK7H STK6L STK6H STK5L STK5H STK4L STK4H STK3L STK3H STK2L STK2H STK1L STK1H STK0L STK0H Description PFLAG = H, L = P1W = PnM = P1OC = INTRQ = OSCM = T0M = TC1M = TC1R = STKP = @YZ = ROM page and special flag register. Working, @HL and ROM addressing register. Port 1 wakeup register. Port n input/output mode register. Port 1 open-drain control register. Interrupt request register. Oscillator mode register. T0 mode register. TC1 mode register. TC1 auto-reload data buffer. Stack pointer buffer. RAM YZ indirect addressing index pointer. SONiX TECHNOLOGY CO., LTD R= Y, Z = PEDGE = Pn = PnUR = INTEN = PCH, PCL = T0C = TC1C = WDTR = STK0~STK7 = @HL = Page 23 Working register and ROM look-up data buffer. Working, @YZ and ROM addressing register. P0.0 edge direction register. Port n data buffer. Port n pull-up resister control register. Interrupt enable register. Program counter. TC1 counting register. TC1 counting register. Watchdog timer clear register. Stack 0 ~ stack 7 buffer. RAM HL indirect addressing index pointer. Version 1.4 SN8P2608 8-Bit Micro-Controller 2.1.4.2 Address 080H 081H 082H 083H 084H 086H 0B8H 0BFH 0C0H 0C1H 0C2H 0C4H 0C5H 0C8H 0C9H 0CAH 0CCH 0CEH 0CFH 0D0H 0D1H 0D2H 0D4H 0D5H 0D8H 0D9H 0DCH 0DDH 0DEH 0DFH 0E0H 0E1H 0E2H 0E4H 0E5H 0E6H 0E7H 0E9H 0F0H 0F1H 0F2H 0F3H 0F4H 0F5H 0F6H 0F7H 0F8H 0F9H 0FAH 0FBH 0FCH 0FDH 0FEH 0FFH BIT DEFINITION of SYSTEM REGISTER Bit7 LBIT7 HBIT7 RBIT7 ZBIT7 YBIT7 NT0 P07M Bit6 LBIT6 HBIT6 RBIT6 ZBIT6 YBIT6 NPD P06M Bit5 LBIT5 HBIT5 RBIT5 ZBIT5 YBIT5 Bit4 LBIT4 HBIT4 RBIT4 ZBIT4 YBIT4 Bit3 LBIT3 HBIT3 RBIT3 ZBIT3 YBIT3 P05M P17W P17M P27M P16W P16M P26M P46M P56M TC1IRQ TC1IEN P15W P15M P25M P45M P55M P03M P00G0 P13W P13M P23M P43M P53M WDTR7 PC7 WDTR6 PC6 WDTR5 PC5 P07 P17 P27 P47 P57 T0ENB T0C7 TC1ENB TC1C7 TC1R7 GIE P07R P17R P27R P06 P16 P26 P46 P56 T0rate2 T0C6 TC1rate2 TC1C6 TC1R6 P05 P15 P25 P45 P55 T0rate1 T0C5 TC1rate1 TC1C5 TC1R5 P04M P00G1 P14W P14M P24M P44M P54M T0IRQ T0IEN CPUM1 WDTR4 PC4 PC12 P04 P14 P24 P44 P54 T0rate0 T0C4 TC1rate0 TC1C4 TC1R4 CPUM0 WDTR3 PC3 PC11 P03 P13 P23 P43 P53 CLKMD WDTR2 PC2 PC10 P02 P12 P22 P42 P52 T0C3 TC1CKS TC1C3 TC1R3 P57R @HL7 @YZ7 P06R P16R P26R P46R P56R @ HL 6 @YZ6 P05R P15R P25R P45R P55R @ HL5 @YZ5 P04R P14R P24R P44R P54R @ HL4 @YZ4 P03R P13R P23R P43R P53R @ HL3 @YZ3 T0C2 ALOAD1 TC1C2 TC1R2 STKPB2 P02R P12R P22R P42R P52R @ HL2 @YZ2 S7PC7 S6PC7 S5PC7 S4PC7 S3PC7 S7PC6 S6PC6 S5PC6 S4PC6 S3PC6 S7PC5 S6PC5 S5PC5 S4PC5 S3PC5 S2PC7 S2PC6 S2PC5 S1PC7 S1PC6 S1PC5 S0PC7 S0PC6 S0PC5 S7PC4 S7PC12 S6PC4 S6PC12 S5PC4 S6PC12 S4PC4 S4PC12 S3PC4 S3PC12 S2PC4 S2PC12 S1PC4 S1PC12 S0PC4 S0PC12 S7PC3 S7PC11 S6PC3 S6PC11 S5PC3 S5PC11 S4PC3 S4PC11 S3PC3 S3PC11 S2PC3 S2PC11 S1PC3 S1PC11 S0PC3 S0PC11 S7PC2 S7PC10 S6PC2 S6PC10 S5PC2 S5PC10 S4PC2 S4PC10 S3PC2 S3PC10 S2PC2 S2PC10 S1PC2 S1PC10 S0PC2 S0PC10 P57M Bit2 LBIT2 HBIT2 RBIT2 ZBIT2 YBIT2 C P02M Bit1 LBIT1 HBIT1 RBIT1 ZBIT1 YBIT1 DC P01M Bit0 LBIT0 HBIT0 RBIT0 ZBIT0 YBIT0 Z P00M P12W P12M P22M P42M P52M P11W P11M P21M P41M P51M P01IRQ P01IEN STPHX WDTR1 PC1 PC9 P01 P11 P21 P41 P51 P10W P10M P20M P40M P50M P00IRQ P00IEN T0C1 TC1OUT TC1C1 TC1R1 STKPB1 P01R P11R P21R P41R P51R @ HL1 @YZ1 P11OC S7PC1 S7PC9 S6PC1 S6PC9 S5PC1 S5PC9 S4PC1 S4PC9 S3PC1 S3PC9 S2PC1 S2PC9 S1PC1 S1PC9 S0PC1 S0PC9 T0C0 PWM1OUT TC1C0 TC1R0 STKPB0 P00R P10R P20R P40R P50R @ HL0 @YZ0 P10OC S7PC0 S7PC8 S6PC0 S6PC8 S5PC0 S5PC8 S4PC0 S4PC8 S3PC0 S3PC8 S2PC0 S2PC8 S1PC0 S1PC8 S0PC0 S0PC8 WDTR0 PC0 PC8 P00 P10 P20 P40 P50 R/W R/W R/W R/W R/W R/W R/W R/W R/W W R/W R/W R/W R/W R/W R/W R/W W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W W R/W W W W W W R/W R/W W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W Remarks L H R Z Y PFLAG P0M PEDGE P1W P1M P2M P4M P5M INTRQ INTEN OSCM WDTR PCL PCH P0 P1 P2 P4 P5 T0M T0C TC1M TC1C TC1R STKP P0UR P1UR P2UR P4UR P5UR @ HL @YZ P1OC STK7L STK7H STK6L STK6H STK5L STK5H STK4L STK4H STK3L STK3H STK2L STK2H STK1L STK1H STK0L STK0H Note: 1. To avoid system error, make sure to put all the “0” and “1” as it indicates in the above table. 2. 3. 4. 5. All of register names had been declared in SN8ASM assembler. One-bit name had been declared in SN8ASM assembler with “F” prefix code. “b0bset”, “b0bclr”, ”bset”, ”bclr” instructions are only available to the “R/W” registers. For detail description, please refer to the “System Register Quick Reference Table”. SONiX TECHNOLOGY CO., LTD Page 24 Version 1.4 SN8P2608 8-Bit Micro-Controller 2.1.4.3 ACCUMULATOR The ACC is an 8-bit data register responsible for transferring or manipulating data between ALU and data memory. If the result of operating is zero (Z) or there is carry (C or DC) occurrence, then these flags will be set to PFLAG register. ACC is not in data memory (RAM), so ACC can’t be access by “B0MOV” instruction during the instant addressing mode. ¾ Example: Read and write ACC value. ; Read ACC data and store in BUF data memory. MOV BUF, A ; Write a immediate data into ACC. MOV A, #0FH ; Write ACC data from BUF data memory. MOV A, BUF B0MOV A, BUF ; or The system doesn’t store ACC and PFLAG value when interrupt executed. ACC and PFLAG data must be saved to other data memories. “PUSH”, “POP” save and load ACC, PFLAG data into buffers. ¾ Example: Protect ACC and working registers. INT_SERVICE: PUSH … … POP ; Save ACC and PFLAG to buffers. . RETI SONiX TECHNOLOGY CO., LTD ; Load ACC and PFLAG from buffers. ; Exit interrupt service vector Page 25 Version 1.4 SN8P2608 8-Bit Micro-Controller 2.1.4.4 PROGRAM FLAG The PFLAG register contains the arithmetic status of ALU operation, system reset status and LVD detecting status. NT0, NPD bits indicate system reset status including power on reset, LVD reset, reset by external pin active and watchdog reset. C, DC, Z bits indicate the result status of ALU operation. 086H PFLAG Read/Write After reset Bit [7:6] Bit 7 NT0 R/W - Bit 6 NPD R/W - Bit 5 - Bit 4 - Bit 3 - Bit 2 C R/W 0 Bit 1 DC R/W 0 Bit 0 Z R/W 0 NT0, NPD: Reset status flag. NT0 0 0 1 1 NPD 0 1 0 1 Reset Status Watch-dog time out Reserved Reset by LVD Reset by external Reset Pin Bit 2 C: Carry flag 1 = Addition with carry, subtraction without borrowing, rotation with shifting out logic “1”, comparison result ≥ 0. 0 = Addition without carry, subtraction with borrowing signal, rotation with shifting out logic “0”, comparison result < 0. Bit 1 DC: Decimal carry flag 1 = Addition with carry from low nibble, subtraction without borrow from high nibble. 0 = Addition without carry from low nibble, subtraction with borrow from high nibble. Bit 0 Z: Zero flag 1 = The result of an arithmetic/logic/branch operation is zero. 0 = The result of an arithmetic/logic/branch operation is not zero. Note: Refer to instruction set table for detailed information of C, DC and Z flags. SONiX TECHNOLOGY CO., LTD Page 26 Version 1.4 SN8P2608 8-Bit Micro-Controller SONiX TECHNOLOGY CO., LTD Page 27 Version 1.4 SN8P2608 8-Bit Micro-Controller 2.1.4.5 PROGRAM COUNTER The program counter (PC) is a 13-bit binary counter separated into the high-byte 5 and the low-byte 8 bits. This counter is responsible for pointing a location in order to fetch an instruction for kernel circuit. Normally, the program counter is automatically incremented with each instruction during program execution. Besides, it can be replaced with specific address by executing CALL or JMP instruction. When JMP or CALL instruction is executed, the destination address will be inserted to bit 0 ~ bit 12. PC After reset Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 PC12 PC11 PC10 PC9 - - - 0 0 0 0 Bit 8 PC8 Bit 7 PC7 Bit 6 PC6 Bit 5 PC5 Bit 4 PC4 Bit 3 PC3 Bit 2 PC2 Bit 1 PC1 Bit 0 PC0 0 0 0 0 0 0 0 0 0 PCH ) PCL ONE ADDRESS SKIPPING There are nine instructions (CMPRS, INCS, INCMS, DECS, DECMS, BTS0, BTS1, B0BTS0, B0BTS1) with one address skipping function. If the result of these instructions is true, the PC will add 2 steps to skip next instruction. If the condition of bit test instruction is true, the PC will add 2 steps to skip next instruction. FC C0STEP ; To skip, if Carry_flag = 1 ; Else jump to C0STEP. C0STEP: B0BTS1 JMP … … NOP A, BUF0 FZ C1STEP ; Move BUF0 value to ACC. ; To skip, if Zero flag = 0. ; Else jump to C1STEP. C1STEP: B0MOV B0BTS0 JMP … … NOP If the ACC is equal to the immediate data or memory, the PC will add 2 steps to skip next instruction. C0STEP: CMPRS JMP … … NOP A, #12H C0STEP SONiX TECHNOLOGY CO., LTD ; To skip, if ACC = 12H. ; Else jump to C0STEP. Page 28 Version 1.4 SN8P2608 8-Bit Micro-Controller If the destination increased by 1, which results overflow of 0xFF to 0x00, the PC will add 2 steps to skip next instruction. INCS instruction: C0STEP: INCS JMP … … NOP BUF0 C0STEP ; Jump to C0STEP if ACC is not zero. INCMS JMP … … NOP BUF0 C0STEP ; Jump to C0STEP if BUF0 is not zero. INCMS instruction: C0STEP: If the destination decreased by 1, which results underflow of 0x00 to 0xFF, the PC will add 2 steps to skip next instruction. DECS instruction: C0STEP: DECS JMP … … NOP BUF0 C0STEP ; Jump to C0STEP if ACC is not zero. DECMS JMP … … NOP BUF0 C0STEP ; Jump to C0STEP if BUF0 is not zero. DECMS instruction: C0STEP: SONiX TECHNOLOGY CO., LTD Page 29 Version 1.4 SN8P2608 8-Bit Micro-Controller ) MULTI-ADDRESS JUMPING Users can jump around the multi-address by either JMP instruction or ADD M, A instruction (M = PCL) to activate multi-address jumping function. Program Counter supports “ADD M,A”, ”ADC M,A” and “B0ADD M,A” instructions for carry to PCH when PCL overflow automatically. For jump table or others applications, users can calculate PC value by the three instructions and don’t care PCL overflow problem. Note: PCH only support PC up counting result and doesn’t support PC down counting. When PCL is carry after PCL+ACC, PCH adds one automatically. If PCL borrow after PCL–ACC, PCH keeps value and not change. ¾ Example: If PC = 0323H (PCH = 03H, PCL = 23H) ; PC = 0323H MOV B0MOV … A, #28H PCL, A ; Jump to address 0328H MOV B0MOV … A, #00H PCL, A ; Jump to address 0300H ; PC = 0328H ¾ Example: If PC = 0323H (PCH = 03H, PCL = 23H) ; PC = 0323H B0ADD JMP JMP JMP JMP … … PCL, A A0POINT A1POINT A2POINT A3POINT SONiX TECHNOLOGY CO., LTD ; PCL = PCL + ACC, the PCH cannot be changed. ; If ACC = 0, jump to A0POINT ; ACC = 1, jump to A1POINT ; ACC = 2, jump to A2POINT ; ACC = 3, jump to A3POINT Page 30 Version 1.4 SN8P2608 8-Bit Micro-Controller 2.1.4.6 H, L REGISTERS The H and L registers are the 8-bit buffers. There are two major functions of these registers. z z can be used as general working registers can be used as RAM data pointers with @HL register 081H H Read/Write After reset Bit 7 HBIT7 R/W X Bit 6 HBIT6 R/W X Bit 5 HBIT5 R/W X Bit 4 HBIT4 R/W X Bit 3 HBIT3 R/W X Bit 2 HBIT2 R/W X Bit 1 HBIT1 R/W X Bit 0 HBIT0 R/W X 080H L Read/Write After reset Bit 7 LBIT7 R/W X Bit 6 LBIT6 R/W X Bit 5 LBIT5 R/W X Bit 4 LBIT4 R/W X Bit 3 LBIT3 R/W X Bit 2 LBIT2 R/W X Bit 1 LBIT1 R/W X Bit 0 LBIT0 R/W X Example: If want to read a data from RAM address 20H of bank_0, it can use indirectly addressing mode to access data as following. B0MOV B0MOV B0MOV H, #00H L, #20H A, @HL ; To set RAM bank 0 for H register ; To set location 20H for L register ; To read a data into ACC Example: Clear general-purpose data memory area of bank 0 using @HL register. CLR B0MOV H L, #07FH ; H = 0, bank 0 ; L = 7FH, the last address of the data memory area CLR DECMS JMP @HL L CLR_HL_BUF ; Clear @HL to be zero ; L – 1, if L = 0, finish the routine ; Not zero CLR @HL CLR_HL_BUF: END_CLR: ; End of clear general purpose data memory area of bank 0 … … SONiX TECHNOLOGY CO., LTD Page 31 Version 1.4 SN8P2608 8-Bit Micro-Controller 2.1.4.7 Y, Z REGISTERS The Y and Z registers are the 8-bit buffers. There are three major functions of these registers. z can be used as general working registers z can be used as RAM data pointers with @YZ register z can be used as ROM data pointer with the MOVC instruction for look-up table 084H Y Read/Write After reset Bit 7 YBIT7 R/W - Bit 6 YBIT6 R/W - Bit 5 YBIT5 R/W - Bit 4 YBIT4 R/W - Bit 3 YBIT3 R/W - Bit 2 YBIT2 R/W - Bit 1 YBIT1 R/W - Bit 0 YBIT0 R/W - 083H Z Read/Write After reset Bit 7 ZBIT7 R/W - Bit 6 ZBIT6 R/W - Bit 5 ZBIT5 R/W - Bit 4 ZBIT4 R/W - Bit 3 ZBIT3 R/W - Bit 2 ZBIT2 R/W - Bit 1 ZBIT1 R/W - Bit 0 ZBIT0 R/W - Example: Uses Y, Z register as the data pointer to access data in the RAM address 025H of bank0. B0MOV B0MOV B0MOV Y, #00H Z, #25H A, @YZ ; To set RAM bank 0 for Y register ; To set location 25H for Z register ; To read a data into ACC Example: Uses the Y, Z register as data pointer to clear the RAM data. B0MOV B0MOV Y, #0 Z, #07FH ; Y = 0, bank 0 ; Z = 7FH, the last address of the data memory area CLR @YZ ; Clear @YZ to be zero DECMS JMP Z CLR_YZ_BUF ; Z – 1, if Z= 0, finish the routine ; Not zero CLR @YZ CLR_YZ_BUF: END_CLR: ; End of clear general purpose data memory area of bank 0 … SONiX TECHNOLOGY CO., LTD Page 32 Version 1.4 SN8P2608 8-Bit Micro-Controller 2.1.4.8 R REGISTERS R register is an 8-bit buffer. There are two major functions of the register. z Can be used as working register z For store high-byte data of look-up table (MOVC instruction executed, the high-byte data of specified ROM address will be stored in R register and the low-byte data will be stored in ACC). 082H R Read/Write After reset Bit 7 RBIT7 R/W - Bit 6 RBIT6 R/W - Bit 5 RBIT5 R/W - Bit 4 RBIT4 R/W - Bit 3 RBIT3 R/W - Bit 2 RBIT2 R/W - Bit 1 RBIT1 R/W - Bit 0 RBIT0 R/W - Note: Please refer to the “LOOK-UP TABLE DESCRIPTION” about R register look-up table application. SONiX TECHNOLOGY CO., LTD Page 33 Version 1.4 SN8P2608 8-Bit Micro-Controller 2.2 ADDRESSING MODE 2.2.1 IMMEDIATE ADDRESSING MODE The immediate addressing mode uses an immediate data to set up the location in ACC or specific RAM. ¾ Example: Move the immediate data 12H to ACC. MOV ¾ ; To set an immediate data 12H into ACC. Example: Move the immediate data 12H to R register. B0MOV A, #12H R, #12H ; To set an immediate data 12H into R register. Note: In immediate addressing mode application, the specific RAM must be 0x80~0x87 working register. 2.2.2 DIRECTLY ADDRESSING MODE The directly addressing mode moves the content of RAM location in or out of ACC. ¾ Example: Move 0x12 RAM location data into ACC. B0MOV ¾ A, 12H ; To get a content of RAM location 0x12 of bank 0 and save in ACC. Example: Move ACC data into 0x12 RAM location. B0MOV 12H, A ; To get a content of ACC and save in RAM location 12H of bank 0. 2.2.3 INDIRECTLY ADDRESSING MODE The indirectly addressing mode is to access the memory by the data pointer registers (H/L, Y/Z). ¾ Example: Indirectly addressing mode with @HL register B0MOV B0MOV B0MOV ¾ H, #0 L, #12H A, @HL ; To clear H register to access RAM bank 0. ; To set an immediate data 12H into L register. ; Use data pointer @HL reads a data from RAM location ; 012H into ACC. Example: Indirectly addressing mode with @YZ register B0MOV B0MOV B0MOV Y, #0 Z, #12H A, @YZ SONiX TECHNOLOGY CO., LTD ; To clear Y register to access RAM bank 0. ; To set an immediate data 12H into Z register. ; Use data pointer @YZ reads a data from RAM location ; 012H into ACC. Page 34 Version 1.4 SN8P2608 8-Bit Micro-Controller SONiX TECHNOLOGY CO., LTD Page 35 Version 1.4 SN8P2608 8-Bit Micro-Controller 2.3 STACK OPERATION 2.3.1 OVERVIEW The stack buffer has 8-level. These buffers are designed to push and pop up program counter’s (PC) data when interrupt service routine and “CALL” instruction are executed. The STKP register is a pointer designed to point active level in order to push or pop up data from stack buffer. The STKnH and STKnL are the stack buffers to store program counter (PC) data. RET / RETI STKP + 1 CALL / INTERRUPT STKP - 1 PCH PCL STACK Level STACK Buffer High Byte STACK Buffer Low Byte STKP = 7 STK7H STK7L STKP = 6 STK6H STK6L STKP = 5 STK5H STKP STK5L STKP STKP = 4 STK4H STK4L STKP = 3 STK3H STK3L STKP = 2 STK2H STK2L STKP = 1 STK1H STK1L STKP = 0 STK0H STK0L SONiX TECHNOLOGY CO., LTD Page 36 Version 1.4 SN8P2608 8-Bit Micro-Controller 2.3.2 STACK REGISTERS The stack pointer (STKP) is a 3-bit register to store the address used to access the stack buffer, 13-bit data memory (STKnH and STKnL) set aside for temporary storage of stack addresses. The two stack operations are writing to the top of the stack (push) and reading from the top of stack (pop). Push operation decrements the STKP and the pop operation increments each time. That makes the STKP always point to the top address of stack buffer and write the last program counter value (PC) into the stack buffer. The program counter (PC) value is stored in the stack buffer before a CALL instruction executed or during interrupt service routine. Stack operation is a LIFO type (Last in and first out). The stack pointer (STKP) and stack buffer (STKnH and STKnL) are located in the system register area bank 0. 0DFH STKP Read/Write After reset Bit 7 GIE R/W 0 Bit 6 - Bit 5 - Bit 4 - Bit[2:0] STKPBn: Stack pointer (n = 0 ~ 2) Bit 7 GIE: Global interrupt control bit. 0 = Disable. 1 = Enable. Please refer to the interrupt chapter. ¾ Bit 3 - Bit 2 STKPB2 R/W 1 Bit 1 STKPB1 R/W 1 Bit 0 STKPB0 R/W 1 Example: Stack pointer (STKP) reset, we strongly recommended to clear the stack pointers in the beginning of the program. MOV B0MOV A, #00000111B STKP, A 0F0H~0FFH STKnH Read/Write After reset Bit 7 - Bit 6 - Bit 5 - Bit 4 SnPC12 R/W 0 Bit 3 SnPC11 R/W 0 Bit 2 SnPC10 R/W 0 Bit 1 SnPC9 R/W 0 Bit 0 SnPC8 R/W 0 0F0H~0FFH STKnL Read/Write After reset Bit 7 SnPC7 R/W 0 Bit 6 SnPC6 R/W 0 Bit 5 SnPC5 R/W 0 Bit 4 SnPC4 R/W 0 Bit 3 SnPC3 R/W 0 Bit 2 SnPC2 R/W 0 Bit 1 SnPC1 R/W 0 Bit 0 SnPC0 R/W 0 STKn = STKnH , STKnL (n = 7 ~ 0) SONiX TECHNOLOGY CO., LTD Page 37 Version 1.4 SN8P2608 8-Bit Micro-Controller 2.3.3 STACK OPERATION EXAMPLE The two kinds of Stack-Save operations refer to the stack pointer (STKP) and write the content of program counter (PC) to the stack buffer are CALL instruction and interrupt service. Under each condition, the STKP decreases and points to the next available stack location. The stack buffer stores the program counter about the op-code address. The Stack-Save operation is as the following table. Stack Level 0 1 2 3 4 5 6 7 8 >8 STKPB2 STKP Register STKPB1 STKPB0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 1 0 1 0 1 0 1 0 1 0 Stack Buffer High Byte Low Byte Free STK0H STK1H STK2H STK3H STK4H STK5H STK6H STK7H - Free STK0L STK1L STK2L STK3L STK4L STK5L STK6L STK7L - Description Stack Over, error There are Stack-Restore operations correspond to each push operation to restore the program counter (PC). The RETI instruction uses for interrupt service routine. The RET instruction is for CALL instruction. When a pop operation occurs, the STKP is incremented and points to the next free stack location. The stack buffer restores the last program counter (PC) to the program counter registers. The Stack-Restore operation is as the following table. Stack Level 8 7 6 5 4 3 2 1 0 STKP Register STKPB2 STKPB1 STKPB0 1 0 0 0 0 1 1 1 1 SONiX TECHNOLOGY CO., LTD 1 0 0 1 1 0 0 1 1 1 0 1 0 1 0 1 0 1 Stack Buffer High Byte Low Byte STK7H STK6H STK5H STK4H STK3H STK2H STK1H STK0H Free Page 38 STK7L STK6L STK5L STK4L STK3L STK2L STK1L STK0L Free Description - Version 1.4 SN8P2608 8-Bit Micro-Controller 3 RESET 3.1 OVERVIEW The system would be reset in three conditions as following. z z z z Power on reset Watchdog reset Brown out reset External reset (only supports external reset pin enable situation) When any reset condition occurs, all system registers keep initial status, program stops and program counter is cleared. After reset status released, the system boots up and program starts to execute from ORG 0. The NT0, NPD flags indicate system reset status. The system can depend on NT0, NPD status and go to different paths by program. 086H PFLAG Read/Write After reset Bit [7:6] Bit 7 NT0 R/W - Bit 6 NPD R/W - Bit 5 - Bit 4 - Bit 3 - Bit 2 C R/W 0 Bit 1 DC R/W 0 Bit 0 Z R/W 0 NT0, NPD: Reset status flag. NT0 0 0 1 1 NPD 0 1 0 1 Condition Watchdog reset Reserved Power on reset and LVD reset. External reset Description Watchdog timer overflow. Power voltage is lower than LVD detecting level. External reset pin detect low level status. Finishing any reset sequence needs some time. The system provides complete procedures to make the power on reset successful. For different oscillator types, the reset time is different. That causes the VDD rise rate and start-up time of different oscillator is not fixed. RC type oscillator’s start-up time is very short, but the crystal type is longer. Under client terminal application, users have to take care the power on reset time for the master terminal requirement. The reset timing diagram is as following. VDD Power LVD Detect Level VSS VDD External Reset VSS External Reset Low Detect External Reset High Detect Watchdog Overflow Watchdog Normal Run Watchdog Reset Watchdog Stop System Normal Run System Status System Stop Power On Delay Time SONiX TECHNOLOGY CO., LTD External Reset Delay Time Page 39 Watchdog Reset Delay Time Version 1.4 SN8P2608 8-Bit Micro-Controller 3.2 POWER ON RESET The power on reset depend no LVD operation for most power-up situations. The power supplying to system is a rising curve and needs some time to achieve the normal voltage. Power on reset sequence is as following. z z z z z Power-up: System detects the power voltage up and waits for power stable. External reset (only external reset pin enable): System checks external reset pin status. If external reset pin is not high level, the system keeps reset status and waits external reset pin released. System initialization: All system registers is set as initial conditions and system is ready. Oscillator warm up: Oscillator operation is successfully and supply to system clock. Program executing: Power on sequence is finished and program executes from ORG 0. 3.3 WATCHDOG RESET Watchdog reset is a system protection. In normal condition, system works well and clears watchdog timer by program. Under error condition, system is in unknown situation and watchdog can’t be clear by program before watchdog timer overflow. Watchdog timer overflow occurs and the system is reset. After watchdog reset, the system restarts and returns normal mode. Watchdog reset sequence is as following. z z z z Watchdog timer status: System checks watchdog timer overflow status. If watchdog timer overflow occurs, the system is reset. System initialization: All system registers is set as initial conditions and system is ready. Oscillator warm up: Oscillator operation is successfully and supply to system clock. Program executing: Power on sequence is finished and program executes from ORG 0. Watchdog reset is a system protection. In normal condition, system works well and clears watchdog timer by program. Under error condition, system is in unknown situation and watchdog can’t be clear by program before watchdog timer overflow. Watchdog timer overflow occurs and the system is reset. After watchdog reset, the system restarts and returns normal mode. Watchdog reset sequence is as following. z z z z Watchdog timer status: System checks watchdog timer overflow status. If watchdog timer overflow occurs, the system is reset. System initialization: All system registers is set as initial conditions and system is ready. Oscillator warm up: Oscillator operation is successfully and supply to system clock. Program executing: Power on sequence is finished and program executes from ORG 0. Watchdog timer application note is as following. z z z Before clearing watchdog timer, check I/O status and check RAM contents can improve system error. Don’t clear watchdog timer in interrupt vector and interrupt service routine. That can improve main routine fail. Clearing watchdog timer program is only at one part of the program. This way is the best structure to enhance the watchdog timer function. Note: Please refer to the “WATCHDOG TIMER” about watchdog timer detail information. SONiX TECHNOLOGY CO., LTD Page 40 Version 1.4 SN8P2608 8-Bit Micro-Controller 3.4 BROWN OUT RESET 3.4.1 BROWN OUT DESCRIPTION The brown out reset is a power dropping condition. The power drops from normal voltage to low voltage by external factors (e.g. EFT interference or external loading changed). The brown out reset would make the system not work well or executing program error. VDD System Work Well Area V1 V2 V3 System Work Error Area VSS Brown Out Reset Diagram The power dropping might through the voltage range that’s the system dead-band. The dead-band means the power range can’t offer the system minimum operation power requirement. The above diagram is a typical brown out reset diagram. There is a serious noise under the VDD, and VDD voltage drops very deep. There is a dotted line to separate the system working area. The above area is the system work well area. The below area is the system work error area called dead-band. V1 doesn’t touch the below area and not effect the system operation. But the V2 and V3 is under the below area and may induce the system error occurrence. Let system under dead-band includes some conditions. DC application: The power source of DC application is usually using battery. When low battery condition and MCU drive any loading, the power drops and keeps in dead-band. Under the situation, the power won’t drop deeper and not touch the system reset voltage. That makes the system under dead-band. AC application: In AC power application, the DC power is regulated from AC power source. This kind of power usually couples with AC noise that makes the DC power dirty. Or the external loading is very heavy, e.g. driving motor. The loading operating induces noise and overlaps with the DC power. VDD drops by the noise, and the system works under unstable power situation. The power on duration and power down duration are longer in AC application. The system power on sequence protects the power on successful, but the power down situation is like DC low battery condition. When turn off the AC power, the VDD drops slowly and through the dead-band for a while. SONiX TECHNOLOGY CO., LTD Page 41 Version 1.4 SN8P2608 8-Bit Micro-Controller 3.4.2 THE SYSTEM OPERATING VOLTAGE DECSRIPTION To improve the brown out reset needs to know the system minimum operating voltage which is depend on the system executing rate and power level. Different system executing rates have different system minimum operating voltage. The electrical characteristic section shows the system voltage to executing rate relationship. System Mini. Operating Voltage. Vdd (V) Normal Operating Area Dead-Band Area Reset Area System Reset Voltage. System Rate (Fcpu) Normally the system operation voltage area is higher than the system reset voltage to VDD, and the reset voltage is decided by LVD detect level. The system minimum operating voltage rises when the system executing rate upper even higher than system reset voltage. The dead-band definition is the system minimum operating voltage above the system reset voltage. 3.4.3 BROWN OUT RESET IMPROVEMENT How to improve the brown reset condition? There are some methods to improve brown out reset as following. z z z z LVD reset Watchdog reset Reduce the system executing rate External reset circuit. (Zener diode reset circuit, Voltage bias reset circuit, External reset IC) Note: 1. The “ Zener diode reset circuit”, “Voltage bias reset circuit” and “External reset IC” can completely improve the brown out reset, DC low battery and AC slow power down conditions. 2. For AC power application and enhance EFT performance, the system clock is 4MHz/4 (1 mips) and use external reset (“ Zener diode reset circuit”, “Voltage bias reset circuit”, “External reset IC”). The structure can improve noise effective and get good EFT characteristic. SONiX TECHNOLOGY CO., LTD Page 42 Version 1.4 SN8P2608 8-Bit Micro-Controller LVD reset: VDD Power LVD Detect Voltage VSS Power is below LVD Detect Voltage and System Reset. System Normal Run System Status System Stop Power On Delay Time The LVD (low voltage detector) is built-in Sonix 8-bit MCU to be brown out reset protection. When the VDD drops and is below LVD detect voltage, the LVD would be triggered, and the system is reset. The LVD detect level is different by each MCU. The LVD voltage level is a point of voltage and not easy to cover all dead-band range. Using LVD to improve brown out reset is depend on application requirement and environment. If the power variation is very deep, violent and trigger the LVD, the LVD can be the protection. If the power variation can touch the LVD detect level and make system work error, the LVD can’t be the protection and need to other reset methods. More detail LVD information is in the electrical characteristic section. Watchdog reset: The watchdog timer is a protection to make sure the system executes well. Normally the watchdog timer would be clear at one point of program. Don’t clear the watchdog timer in several addresses. The system executes normally and the watchdog won’t reset system. When the system is under dead-band and the execution error, the watchdog timer can’t be clear by program. The watchdog is continuously counting until overflow occurrence. The overflow signal of watchdog timer triggers the system to reset, and the system return to normal mode after reset sequence. This method also can improve brown out reset condition and make sure the system to return normal mode. If the system reset by watchdog and the power is still in dead-band, the system reset sequence won’t be successful and the system stays in reset status until the power return to normal range. Reduce the system executing rate: If the system rate is fast and the dead-band exists, to reduce the system executing rate can improve the dead-band. The lower system rate is with lower minimum operating voltage. Select the power voltage that’s no dead-band issue and find out the mapping system rate. Adjust the system rate to the value and the system exits the dead-band issue. This way needs to modify whole program timing to fit the application requirement. External reset circuit: The external reset methods also can improve brown out reset and is the complete solution. There are three external reset circuits to improve brown out reset including “Zener diode reset circuit”, “Voltage bias reset circuit” and “External reset IC”. These three reset structures use external reset signal and control to make sure the MCU be reset under power dropping and under dead-band. The external reset information is described in the next section. SONiX TECHNOLOGY CO., LTD Page 43 Version 1.4 SN8P2608 8-Bit Micro-Controller 3.5 EXTERNAL RESET External reset function is controlled by “Reset_Pin” code option. Set the code option as “Reset” option to enable external reset function. External reset pin is Schmitt Trigger structure and low level active. The system is running when reset pin is high level voltage input. The reset pin receives the low voltage and the system is reset. The external reset operation actives in power on and normal running mode. During system power-up, the external reset pin must be high level input, or the system keeps in reset status. External reset sequence is as following. z z z z External reset (only external reset pin enable): System checks external reset pin status. If external reset pin is not high level, the system keeps reset status and waits external reset pin released. System initialization: All system registers is set as initial conditions and system is ready. Oscillator warm up: Oscillator operation is successfully and supply to system clock. Program executing: Power on sequence is finished and program executes from ORG 0. The external reset can reset the system during power on duration, and good external reset circuit can protect the system to avoid working at unusual power condition, e.g. brown out reset in AC power application… 3.6 EXTERNAL RESET CIRCUIT 3.6.1 Simply RC Reset Circuit VDD R1 47K ohm R2 RST 100 ohm MCU C1 0.1uF VSS VCC GND This is the basic reset circuit, and only includes R1 and C1. The RC circuit operation makes a slow rising signal into reset pin as power up. The reset signal is slower than VDD power up timing, and system occurs a power on signal from the timing difference. Note: The reset circuit is no any protection against unusual power or brown out reset. SONiX TECHNOLOGY CO., LTD Page 44 Version 1.4 SN8P2608 8-Bit Micro-Controller 3.6.2 Diode & RC Reset Circuit VDD R1 47K ohm DIODE R2 RST MCU 100 ohm C1 0.1uF VSS VCC GND This is the better reset circuit. The R1 and C1 circuit operation is like the simply reset circuit to make a power on signal. The reset circuit has a simply protection against unusual power. The diode offers a power positive path to conduct higher power to VDD. It is can make reset pin voltage level to synchronize with VDD voltage. The structure can improve slight brown out reset condition. Note: The R2 100 ohm resistor of “Simply reset circuit” and “Diode & RC reset circuit” is necessary to limit any current flowing into reset pin from external capacitor C in the event of reset pin breakdown due to Electrostatic Discharge (ESD) or Electrical Over-stress (EOS). 3.6.3 Zener Diode Reset Circuit VDD R1 33K ohm E R2 B 10K ohm Vz Q1 C RST MCU R3 40K ohm VSS VCC GND The zener diode reset circuit is a simple low voltage detector and can improve brown out reset condition completely. Use zener voltage to be the active level. When VDD voltage level is above “Vz + 0.7V”, the C terminal of the PNP transistor outputs high voltage and MCU operates normally. When VDD is below “Vz + 0.7V”, the C terminal of the PNP transistor outputs low voltage and MCU is in reset mode. Decide the reset detect voltage by zener specification. Select the right zener voltage to conform the application. SONiX TECHNOLOGY CO., LTD Page 45 Version 1.4 SN8P2608 8-Bit Micro-Controller 3.6.4 Voltage Bias Reset Circuit VDD R1 47K ohm E B Q1 C R2 10K ohm RST MCU R3 2K ohm VSS VCC GND The voltage bias reset circuit is a low cost voltage detector and can improve brown out reset condition completely. The operating voltage is not accurate as zener diode reset circuit. Use R1, R2 bias voltage to be the active level. When VDD voltage level is above or equal to “0.7V x (R1 + R2) / R1”, the C terminal of the PNP transistor outputs high voltage and MCU operates normally. When VDD is below “0.7V x (R1 + R2) / R1”, the C terminal of the PNP transistor outputs low voltage and MCU is in reset mode. Decide the reset detect voltage by R1, R2 resistances. Select the right R1, R2 value to conform the application. In the circuit diagram condition, the MCU’s reset pin level varies with VDD voltage variation, and the differential voltage is 0.7V. If the VDD drops and the voltage lower than reset pin detect level, the system would be reset. If want to make the reset active earlier, set the R2 > R1 and the cap between VDD and C terminal voltage is larger than 0.7V. The external reset circuit is with a stable current through R1 and R2. For power consumption issue application, e.g. DC power system, the current must be considered to whole system power consumption. Note: Under unstable power condition as brown out reset, “Zener diode rest circuit” and “Voltage bias reset circuit” can protects system no any error occurrence as power dropping. When power drops below the reset detect voltage, the system reset would be triggered, and then system executes reset sequence. That makes sure the system work well under unstable power situation. SONiX TECHNOLOGY CO., LTD Page 46 Version 1.4 SN8P2608 8-Bit Micro-Controller 3.6.5 External Reset IC VDD VDD Bypass Capacitor 0.1uF Reset IC RST RST MCU VSS VSS VCC GND The external reset circuit also use external reset IC to enhance MCU reset performance. This is a high cost and good effect solution. By different application and system requirement to select suitable reset IC. The reset circuit can improve all power variation. SONiX TECHNOLOGY CO., LTD Page 47 Version 1.4 SN8P2608 8-Bit Micro-Controller 4 SYSTEM CLOCK 4.1 OVERVIEW The micro-controller is a dual clock system. There are high-speed clock and low-speed clock. The high-speed clock is generated from the external oscillator circuit. The low-speed clock is generated from on-chip low-speed RC oscillator circuit (ILRC 16KHz @3V, 32KHz @5V). Both the high-speed clock and the low-speed clock can be system clock (Fosc). The system clock in slow mode is divided by 4 to be the instruction cycle (Fcpu). ) Normal Mode (High Clock): Fcpu = Fhosc / N, N = 1 ~ 8, Select N by Fcpu code option. ) Slow Mode (Low Clock): Fcpu = Flosc/4. SONIX provides a “Noise Filter” controlled by code option. In high noisy situation, the noise filter can isolate noise outside and protect system works well. The minimum Fcpu of high clock is limited at Fhosc/4 when noise filter enable. 4.2 CLOCK BLOCK DIAGRAM STPHX XIN XOUT Fcpu Code Option HOSC Fhosc. Fcpu = Fhosc/1 ~ Fhosc/8, Noise Filter Disable. Fcpu = Fhosc/4 ~ Fhosc/8, Noise Filter Enable. CLKMD Fosc Fcpu Fosc CPUM[1:0] Flosc. z z z z z Fcpu = Flosc/4 HOSC: High_Clk code option. Fhosc: External high-speed clock. Flosc: Internal low-speed RC clock (about 16KHz@3V, 32KHz@5V). Fosc: System clock source. Fcpu: Instruction cycle. SONiX TECHNOLOGY CO., LTD Page 48 Version 1.4 SN8P2608 8-Bit Micro-Controller 4.3 OSCM REGISTER The OSCM register is an oscillator control register. It controls oscillator status, system mode. 0CAH OSCM Read/Write After reset Bit 7 0 - Bit 6 0 - Bit 5 0 - Bit 4 CPUM1 R/W 0 Bit 3 CPUM0 R/W 0 Bit 2 CLKMD R/W 0 Bit 1 STPHX R/W 0 Bit 0 0 - Bit 1 STPHX: External high-speed oscillator control bit. 0 = External high-speed oscillator free run. 1 = External high-speed oscillator free run stop. Internal low-speed RC oscillator is still running. Bit 2 CLKMD: System high/Low clock mode control bit. 0 = Normal (dual) mode. System clock is high clock. 1 = Slow mode. System clock is internal low clock. Bit[4:3] CPUM[1:0]: CPU operating mode control bits. 00 = normal. 01 = sleep (power down) mode. 10 = green mode. 11 = reserved. ¾ Example: Stop high-speed oscillator B0BSET ¾ FSTPHX ; To stop external high-speed oscillator only. Example: When entering the power down mode (sleep mode), both high-speed oscillator and internal low-speed oscillator will be stopped. B0BSET FCPUM0 SONiX TECHNOLOGY CO., LTD ; To stop external high-speed oscillator and internal low-speed ; oscillator called power down mode (sleep mode). Page 49 Version 1.4 SN8P2608 8-Bit Micro-Controller 4.4 SYSTEM HIGH CLOCK The system high clock is from external oscillator. The high clock type is controlled by “High_Clk” code option. High_Clk Code Option Description RC The high clock is external RC type oscillator. XOUT pin is general purpose I/O pin. 12M 4M The high clock is external high speed oscillator. The typical frequency is 12MHz. The high clock is external oscillator. The typical frequency is 4MHz. 4.4.1 EXTERNAL HIGH CLOCK External high clock includes three modules (Crystal/Ceramic, RC and external clock signal). The high clock oscillator module is controlled by High_Clk code option. The start up time of crystal/ceramic and RC type oscillator is different. RC type oscillator’s start-up time is very short, but the crystal’s is longer. The oscillator start-up time decides reset time length. SONiX TECHNOLOGY CO., LTD Page 50 Version 1.4 SN8P2608 8-Bit Micro-Controller 4.4.1.1 CRYSTAL/CERAMIC Crystal/Ceramic devices are driven by XIN, XOUT pins. For high/normal/low frequency, the driving currents are different. High_Clk code option supports different frequencies. 12M option is for high speed (ex. 12MHz). 4M option is for normal speed (ex. 4MHz). XIN CRYSTAL C 20pF XOUT MCU C VDD 20pF VSS VCC GND Note: Connect the Crystal/Ceramic and C as near as possible to the XIN/XOUT/VSS pins of micro-controller. 4.4.1.2 RC Selecting RC oscillator is by RC option of High_Clk code option. RC type oscillator’s frequency is up to 10MHz. Using “R” value is to change frequency. 50P~100P is good value for “C”. XOUT pin is general purpose I/O pin. XOUT XIN C R MCU VDD VSS VCC GND Note: Connect the R and C as near as possible to the VDD pin of micro-controller. SONiX TECHNOLOGY CO., LTD Page 51 Version 1.4 SN8P2608 8-Bit Micro-Controller 4.4.1.3 EXTERNAL CLOCK SIGNAL Selecting external clock signal input to be system clock is by RC option of High_Clk code option. The external clock signal is input from XIN pin. XOUT pin is general purpose I/O pin. External Clock Input XIN XOUT MCU VSS VDD VCC GND Note: The GND of external oscillator circuit must be as near as possible to VSS pin of micro-controller. SONiX TECHNOLOGY CO., LTD Page 52 Version 1.4 SN8P2608 8-Bit Micro-Controller 4.5 SYSTEM LOW CLOCK The system low clock source is the internal low-speed oscillator built in the micro-controller. The low-speed oscillator uses RC type oscillator circuit. The frequency is affected by the voltage and temperature of the system. In common condition, the frequency of the RC oscillator is about 16KHz at 3V and 32KHz at 5V. The relation between the RC frequency and voltage is as the following figure. Internal Low RC Frequency 45.00 40.80 Freq. (KHz) 40.00 38.08 35.00 35.40 32.52 30.00 29.20 25.96 25.00 ILRC 22.24 20.00 15.00 14.72 16.00 17.24 18.88 10.64 10.00 7.52 5.00 0.00 2.1 2.5 3 3.1 3.3 3.5 4 4.5 5 5.5 6 6.5 7 VDD (V) The internal low RC supports watchdog clock source and system slow mode controlled by CLKMD. ) Flosc = Internal low RC oscillator (about 16KHz @3V, 32KHz @5V). ) Slow mode Fcpu = Flosc / 4 There are two conditions to stop internal low RC. One is power down mode, and the other is green mode of 32K mode and watchdog disable. If system is in 32K mode and watchdog disable, only 32K oscillator actives and system is under low power consumption. ¾ Example: Stop internal low-speed oscillator by power down mode. B0BSET FCPUM0 ; To stop external high-speed oscillator and internal low-speed ; oscillator called power down mode (sleep mode). Note: The internal low-speed clock can’t be turned off individually. It is controlled by CPUM0, CPUM1 (32K, watchdog disable) bits of OSCM register. SONiX TECHNOLOGY CO., LTD Page 53 Version 1.4 SN8P2608 8-Bit Micro-Controller 4.5.1 SYSTEM CLOCK MEASUREMENT Under design period, the users can measure system clock speed by software instruction cycle (Fcpu). This way is useful in RC mode. ¾ Example: Fcpu instruction cycle of external oscillator. B0BSET P0M.0 ; Set P0.0 to be output mode for outputting Fcpu toggle signal. B0BSET B0BCLR JMP P0.0 P0.0 @B ; Output Fcpu toggle signal in low-speed clock mode. ; Measure the Fcpu frequency by oscilloscope. @@: Note: Do not measure the RC frequency directly from XIN; the probe impendence will affect the RC frequency. SONiX TECHNOLOGY CO., LTD Page 54 Version 1.4 SN8P2608 8-Bit Micro-Controller 5 SYSTEM OPERATION MODE 5.1 OVERVIEW The chip is featured with low power consumption by switching around four different modes as following. z z z z Normal mode (High-speed mode) Slow mode (Low-speed mode) Power-down mode (Sleep mode) Green mode Power Down Mode (Sleep Mode) P0, P1 Wake-up Function Active. External Reset Circuit Active. CPUM1, CPUM0 = 01. CLKMD = 1 Normal Mode P0, P1 Wake-up Function Active. T0 Timer Time Out. External Reset Circuit Active. Slow Mode CLKMD = 0 CPUM1, CPUM0 = 10. P0, P1 Wake-up Function Active. T0 Timer Time Out. Green Mode External Reset Circuit Active. System Mode Switching Diagram Operating mode description MODE NORMAL SLOW GREEN EHOSC ILRC CPU instruction T0 timer TC1 timer Running By STPHX By STPHX Running Running Running Executing Executing Stop *Active *Active *Active *Active *Active *Active By Watch_Dog By Watch_Dog By Watch_Dog Watchdog timer Code option Code option Code option Internal interrupt All active All active T0, TC1 External interrupt All active All active All active P0, P1, T0 Wakeup source Reset POWER DOWN (SLEEP) Stop Stop Stop Inactive Inactive By Watch_Dog Code option All inactive All inactive REMARK * Active if T0ENB=1 * Active if TC1ENB=1 Refer to code option description P0, P1, Reset EHOSC: External high clock ILRC: Internal low clock (16K RC oscillator at 3V, 32K at 5V) SONiX TECHNOLOGY CO., LTD Page 55 Version 1.4 SN8P2608 8-Bit Micro-Controller 5.2 SYSTEM MODE SWITCHING ¾ Example: Switch normal/slow mode to power down (sleep) mode. B0BSET FCPUM0 ; Set CPUM0 = 1. Note: During the sleep, only the wakeup pin and reset can wakeup the system back to the normal mode. ¾ Example: Switch normal mode to slow mode. B0BSET B0BSET ¾ ;To set CLKMD = 1, Change the system into slow mode ;To stop external high-speed oscillator for power saving. Example: Switch slow mode to normal mode (The external high-speed oscillator is still running) B0BCLR ¾ FCLKMD FSTPHX FCLKMD ;To set CLKMD = 0 Example: Switch slow mode to normal mode (The external high-speed oscillator stops) If external high clock stop and program want to switch back normal mode. It is necessary to delay at least 20ms for external clock stable. @@: ¾ B0BCLR FSTPHX ; Turn on the external high-speed oscillator. B0MOV DECMS JMP Z, #54 Z @B ; If VDD = 5V, internal RC=32KHz (typical) will delay ; 0.125ms X 162 = 20.25ms for external clock stable B0BCLR FCLKMD ; Change the system back to the normal mode Example: Switch normal/slow mode to green mode. B0BSET FCPUM1 ; Set CPUM1 = 1. Note: If T0 timer wakeup function is disabled in the green mode, only the wakeup pin and reset pin can wakeup the system backs to the previous operation mode. SONiX TECHNOLOGY CO., LTD Page 56 Version 1.4 SN8P2608 8-Bit Micro-Controller ¾ Example: Switch normal/slow mode to Green mode and enable T0 wakeup function. ; Set T0 timer wakeup function. B0BCLR B0BCLR MOV B0MOV MOV B0MOV FT0IEN FT0ENB A,#20H T0M,A A,#74H T0C,A ; To disable T0 interrupt service ; To disable T0 timer ; ; To set T0 clock = Fcpu / 64 B0BCLR B0BCLR B0BSET FT0IEN FT0IRQ FT0ENB ; To disable T0 interrupt service ; To clear T0 interrupt request ; To enable T0 timer ; Go into green mode B0BCLR B0BSET FCPUM0 FCPUM1 ;To set CPUMx = 10 ; To set T0C initial value = 74H (To set T0 interval = 10 ms) Note: During the green mode with T0 wake-up function, the wakeup pins, reset pin and T0 can wakeup the system back to the last mode. T0 wake-up period is controlled by program and T0ENB must be set. SONiX TECHNOLOGY CO., LTD Page 57 Version 1.4 SN8P2608 8-Bit Micro-Controller 5.3 WAKEUP 5.3.1 OVERVIEW Under power down mode (sleep mode) or green mode, program doesn’t execute. The wakeup trigger can wake the system up to normal mode or slow mode. The wakeup trigger sources are external trigger (P0, P1 level change) and internal trigger (T0 timer overflow). z Power down mode is waked up to normal mode. The wakeup trigger is only external trigger (P0, P1 level change) z Green mode is waked up to last mode (normal mode or slow mode). The wakeup triggers are external trigger (P0, P1 level change) and internal trigger (T0 timer overflow). 5.3.2 WAKEUP TIME When the system is in power down mode (sleep mode), the high clock oscillator stops. When waked up from power down mode, MCU waits for 2048 external high-speed oscillator clocks as the wakeup time to stable the oscillator circuit. After the wakeup time, the system goes into the normal mode. Note: Wakeup from green mode is no wakeup time because the clock doesn’t stop in green mode. The value of the wakeup time is as the following. The Wakeup time = 1/Fosc * 2048 (sec) + high clock start-up time Note: The high clock start-up time is depended on the VDD and oscillator type of high clock. Example: In power down mode (sleep mode), the system is waked up. After the wakeup time, the system goes into normal mode. The wakeup time is as the following. The wakeup time = 1/Fosc * 2048 = 0.512 ms (Fosc = 4MHz) The total wakeup time = 0.512 ms + oscillator start-up time 5.3.3 P1W WAKEUP CONTROL REGISTER Under power down mode (sleep mode) and green mode, the I/O ports with wakeup function are able to wake the system up to normal mode. The Port 0 and Port 1 have wakeup function. Port 0 wakeup function always enables, but the Port 1 is controlled by the P1W register. 0C0H P1W Read/Write After reset Bit[7:0] Bit 7 P17W W 0 Bit 6 P16W W 0 Bit 5 P15W W 0 Bit 4 P14W W 0 Bit 3 P13W W 0 Bit 2 P12W W 0 Bit 1 P11W W 0 Bit 0 P10W W 0 P10W~P17W: Port 1 wakeup function control bits. 0 = Disable P1n wakeup function. 1 = Enable P1n wakeup function. SONiX TECHNOLOGY CO., LTD Page 58 Version 1.4 SN8P2608 8-Bit Micro-Controller 6 INTERRUPT 6.1 OVERVIEW This MCU provides three interrupt sources, including two internal interrupt (T0/TC1) and two external interrupt (INT0, INT1). The external interrupt can wakeup the chip while the system is switched from power down mode to high-speed normal mode. Once interrupt service is executed, the GIE bit in STKP register will clear to “0” for stopping other interrupt request. On the contrast, when interrupt service exits, the GIE bit will set to “1” to accept the next interrupts’ request. All of the interrupt request signals are stored in INTRQ register. INTEN Interrupt Enable Register INT0 Trigger INT1 Trigger T0 Time Out TC1 Time Out P00IRQ INTRQ 4-Bit Latchs P01IRQ Interrupt T0IRQ Enable TC1IRQ Gating Interrupt Vector Address (0008H) Global Interrupt Request Signal Note: The GIE bit must enable during all interrupt operation. SONiX TECHNOLOGY CO., LTD Page 59 Version 1.4 SN8P2608 8-Bit Micro-Controller 6.2 INTEN INTERRUPT ENABLE REGISTER INTEN is the interrupt request control register including one internal interrupts, one external interrupts enable control bits. One of the register to be set “1” is to enable the interrupt request function. Once of the interrupt occur, the stack is incremented and program jump to ORG 8 to execute interrupt service routines. The program exits the interrupt service routine when the returning interrupt service routine instruction (RETI) is executed. 0C9H INTEN Read/Write After reset Bit 7 - Bit 6 TC1IEN R/W 0 Bit 5 - Bit 4 T0IEN R/W 0 Bit 0 P00IEN: External P0.0 interrupt (INT0) control bit. 0 = Disable INT0 interrupt function. 1 = Enable INT0 interrupt function. Bit 1 P01IEN: External P0.1 interrupt (INT1) control bit. 0 = Disable INT1 interrupt function. 1 = Enable INT1 interrupt function. Bit 4 T0IEN: T0 timer interrupt control bit. 0 = Disable T0 interrupt function. 1 = Enable T0 interrupt function. Bit 6 TC1IEN: TC1 timer interrupt control bit. 0 = Disable TC1 interrupt function. 1 = Enable TC1 interrupt function. SONiX TECHNOLOGY CO., LTD Page 60 Bit 3 - Bit 2 - Bit 1 P01IEN R/W 0 Bit 0 P00IEN R/W 0 Version 1.4 SN8P2608 8-Bit Micro-Controller 6.3 INTRQ INTERRUPT REQUEST REGISTER INTRQ is the interrupt request flag register. The register includes all interrupt request indication flags. Each one of the interrupt requests occurs, the bit of the INTRQ register would be set “1”. The INTRQ value needs to be clear by programming after detecting the flag. In the interrupt vector of program, users know the any interrupt requests occurring by the register and do the routine corresponding of the interrupt request. 0C8H INTRQ Read/Write After reset Bit 7 - Bit 6 TC1IRQ R/W 0 Bit 5 - Bit 4 T0IRQ R/W 0 Bit 0 P00IRQ: External P0.0 interrupt (INT0) request flag. 0 = None INT0 interrupt request. 1 = INT0 interrupt request. Bit 1 P01IRQ: External P0.1 interrupt (INT1) request flag. 0 = None INT1 interrupt request. 1 = INT1 interrupt request. Bit 4 T0IRQ: T0 timer interrupt request flag. 0 = None T0 interrupt request. 1 = T0 interrupt request. Bit 6 TC1IRQ: TC1 timer interrupt request flag. 0 = None TC1 interrupt request. 1 = TC1 interrupt request. Bit 3 - Bit 2 - Bit 1 P01IRQ R/W 0 Bit 0 P00IRQ R/W 0 6.4 GIE GLOBAL INTERRUPT OPERATION GIE is the global interrupt control bit. All interrupts start work after the GIE = 1 It is necessary for interrupt service request. One of the interrupt requests occurs, and the program counter (PC) points to the interrupt vector (ORG 8) and the stack add 1 level. 0DFH STKP Read/Write After reset Bit 7 ¾ Bit 7 GIE R/W 0 Bit 5 - Bit 4 - Bit 3 - Bit 2 STKPB2 R/W 1 Bit 1 STKPB1 R/W 1 Bit 0 STKPB0 R/W 1 GIE: Global interrupt control bit. 0 = Disable global interrupt. 1 = Enable global interrupt. Example: Set global interrupt control bit (GIE). B0BSET Bit 6 - FGIE ; Enable GIE Note: The GIE bit must enable during all interrupt operation. SONiX TECHNOLOGY CO., LTD Page 61 Version 1.4 SN8P2608 8-Bit Micro-Controller 6.5 PUSH, POP ROUTINE When any interrupt occurs, system will jump to ORG 8 and execute interrupt service routine. It is necessary to save ACC, PFLAG data. The chip includes “PUSH”, “POP” for in/out interrupt service routine. The two instruction save and load ACC, PFLAG data into buffers and avoid main routine error after interrupt service routine finishing. ¾ Note: ”PUSH”, “POP” instructions save and load ACC/PFLAG without (NT0, NPD). PUSH/POP buffer is an unique buffer and only one level. Example: Store ACC and PAFLG data by PUSH, POP instructions when interrupt service routine executed. ORG JMP 0 START ORG JMP 8 INT_SERVICE ORG 10H START: … INT_SERVICE: PUSH … … POP ; Save ACC and PFLAG to buffers. RETI … ENDP ; Exit interrupt service vector SONiX TECHNOLOGY CO., LTD ; Load ACC and PFLAG from buffers. Page 62 Version 1.4 SN8P2608 8-Bit Micro-Controller 6.6 INT0 (P0.0) INTERRUPT OPERATION When the INT0 trigger occurs, the P00IRQ will be set to “1” no matter the P00IEN is enable or disable. If the P00IEN = 1 and the trigger event P00IRQ is also set to be “1”. As the result, the system will execute the interrupt vector (ORG 8). If the P00IEN = 0 and the trigger event P00IRQ is still set to be “1”. Moreover, the system won’t execute interrupt vector even when the P00IRQ is set to be “1”. Users need to be cautious with the operation under multi-interrupt situation. Note: The interrupt trigger direction of P0.0 is control by PEDGE register. 0BFH PEDGE Read/Write After reset Bit[4:3] ¾ ¾ Bit 7 - Bit 6 - Bit 5 - Bit 4 P00G1 R/W 1 Bit 3 P00G0 R/W 0 Bit 2 - Bit 1 - Bit 0 - P00G[1:0]: P0.0 interrupt trigger edge control bits. 00 = reserved. 01 = rising edge. 10 = falling edge. 11 = rising/falling bi-direction (Level change trigger). Example: Setup INT0 interrupt request and bi-direction edge trigger. MOV B0MOV A, #18H PEDGE, A ; Set INT0 interrupt trigger as bi-direction edge. B0BSET B0BCLR B0BSET FP00IEN FP00IRQ FGIE ; Enable INT0 interrupt service ; Clear INT0 interrupt request flag ; Enable GIE Example: INT0 interrupt service routine. ORG JMP 8 INT_SERVICE ; Interrupt vector INT_SERVICE: … ; Push routine to save ACC and PFLAG to buffers. B0BTS1 JMP FP00IRQ EXIT_INT ; Check P00IRQ ; P00IRQ = 0, exit interrupt vector B0BCLR … … FP00IRQ ; Reset P00IRQ ; INT0 interrupt service routine EXIT_INT: … ; Pop routine to load ACC and PFLAG from buffers. RETI ; Exit interrupt vector SONiX TECHNOLOGY CO., LTD Page 63 Version 1.4 SN8P2608 8-Bit Micro-Controller 6.7 INT1 (P0.1) INTERRUPT OPERATION When the INT1 trigger occurs, the P01IRQ will be set to “1” no matter the P01IEN is enable or disable. If the P01IEN = 1 and the trigger event P01IRQ is also set to be “1”. As the result, the system will execute the interrupt vector (ORG 8). If the P01IEN = 0 and the trigger event P01IRQ is still set to be “1”. Moreover, the system won’t execute interrupt vector even when the P01IRQ is set to be “1”. Users need to be cautious with the operation under multi-interrupt situation. Note: The interrupt trigger direction of P0.1 is falling edge. Example: INT1 interrupt request setup. B0BSET B0BCLR B0BSET FP01IEN FP01IRQ FGIE ; Enable INT1 interrupt service ; Clear INT1 interrupt request flag ; Enable GIE Example: INT1 interrupt service routine. ORG JMP 8 INT_SERVICE ; Interrupt vector INT_SERVICE: … ; Push routine to save ACC and PFLAG to buffers. B0BTS1 JMP FP01IRQ EXIT_INT ; Check P01IRQ ; P01IRQ = 0, exit interrupt vector B0BCLR … … FP01IRQ ; Reset P01IRQ ; INT1 interrupt service routine EXIT_INT: … ; Pop routine to load ACC and PFLAG from buffers. RETI ; Exit interrupt vector SONiX TECHNOLOGY CO., LTD Page 64 Version 1.4 SN8P2608 8-Bit Micro-Controller 6.8 T0 INTERRUPT OPERATION When the T0C counter occurs overflow, the T0IRQ will be set to “1” however the T0IEN is enable or disable. If the T0IEN = 1, the trigger event will make the T0IRQ to be “1” and the system enter interrupt vector. If the T0IEN = 0, the trigger event will make the T0IRQ to be “1” but the system will not enter interrupt vector. Users need to care for the operation under multi-interrupt situation. ¾ ¾ Example: T0 interrupt request setup. B0BCLR B0BCLR MOV B0MOV MOV B0MOV FT0IEN FT0ENB A, #20H T0M, A A, #74H T0C, A ; Disable T0 interrupt service ; Disable T0 timer ; ; Set T0 clock = Fcpu / 64 ; Set T0C initial value = 74H ; Set T0 interval = 10 ms B0BSET B0BCLR B0BSET FT0IEN FT0IRQ FT0ENB ; Enable T0 interrupt service ; Clear T0 interrupt request flag ; Enable T0 timer B0BSET FGIE ; Enable GIE Example: T0 interrupt service routine. ORG JMP 8 INT_SERVICE ; Interrupt vector INT_SERVICE: … ; Push routine to save ACC and PFLAG to buffers. B0BTS1 JMP FT0IRQ EXIT_INT ; Check T0IRQ ; T0IRQ = 0, exit interrupt vector B0BCLR MOV B0MOV … … FT0IRQ A, #74H T0C, A ; Reset T0IRQ ; Reset T0C. ; T0 interrupt service routine EXIT_INT: … ; Pop routine to load ACC and PFLAG from buffers. RETI ; Exit interrupt vector SONiX TECHNOLOGY CO., LTD Page 65 Version 1.4 SN8P2608 8-Bit Micro-Controller 6.9 TC1 INTERRUPT OPERATION When the TC1C counter overflows, the TC1IRQ will be set to “1” no matter the TC1IEN is enable or disable. If the TC1IEN and the trigger event TC1IRQ is set to be “1”. As the result, the system will execute the interrupt vector. If the TC1IEN = 0, the trigger event TC1IRQ is still set to be “1”. Moreover, the system won’t execute interrupt vector even when the TC1IEN is set to be “1”. Users need to be cautious with the operation under multi-interrupt situation. Example: TC1 interrupt request setup. B0BCLR B0BCLR MOV B0MOV MOV B0MOV FTC1IEN FTC1ENB A, #20H TC1M, A A, #74H TC1C, A ; Disable TC1 interrupt service ; Disable TC1 timer ; ; Set TC1 clock = Fcpu / 64 ; Set TC1C initial value = 74H ; Set TC1 interval = 10 ms B0BSET B0BCLR B0BSET FTC1IEN FTC1IRQ FTC1ENB ; Enable TC1 interrupt service ; Clear TC1 interrupt request flag ; Enable TC1 timer B0BSET FGIE ; Enable GIE Example: TC1 interrupt service routine. ORG JMP 8 INT_SERVICE ; Interrupt vector INT_SERVICE: … ; Push routine to save ACC and PFLAG to buffers. B0BTS1 JMP FTC1IRQ EXIT_INT ; Check TC1IRQ ; TC1IRQ = 0, exit interrupt vector B0BCLR MOV B0MOV … … FTC1IRQ A, #74H TC1C, A ; Reset TC1IRQ ; Reset TC1C. ; TC1 interrupt service routine EXIT_INT: … ; Pop routine to load ACC and PFLAG from buffers. RETI ; Exit interrupt vector SONiX TECHNOLOGY CO., LTD Page 66 Version 1.4 SN8P2608 8-Bit Micro-Controller 6.10 MULTI-INTERRUPT OPERATION Under certain condition, the software designer uses more than one interrupt requests. Processing multi-interrupt request requires setting the priority of the interrupt requests. The IRQ flags of interrupts are controlled by the interrupt event. Nevertheless, the IRQ flag “1” doesn’t mean the system will execute the interrupt vector. In addition, which means the IRQ flags can be set “1” by the events without enable the interrupt. Once the event occurs, the IRQ will be logic “1”. The IRQ and its trigger event relationship is as the below table. Interrupt Name P00IRQ P01IRQ T0IRQ TC1IRQ Trigger Event Description P0.0 trigger controlled by PEDGE. P0.1 falling edge trigger. T0C overflow. TC1C overflow. For multi-interrupt conditions, two things need to be taking care of. One is to set the priority for these interrupt requests. Two is using IEN and IRQ flags to decide which interrupt to be executed. Users have to check interrupt control bit and interrupt request flag in interrupt routine. ¾ Example: Check the interrupt request under multi-interrupt operation ORG JMP 8 INT_SERVICE ; Interrupt vector INT_SERVICE: … ; Push routine to save ACC and PFLAG to buffers. INTP00CHK: B0BTS1 JMP B0BTS0 JMP FP00IEN INTP01CHK FP00IRQ INTP00 B0BTS1 JMP B0BTS0 JMP FP01IEN INTT0CHK FP01IRQ INTP01 B0BTS1 JMP B0BTS0 JMP FT0IEN INTTC1CHK FT0IRQ INTT0 B0BTS1 JMP B0BTS0 JMP FTC1IEN INT_EXIT FTC1IRQ INTTC1 INTP01CHK: INTT0CHK: INTTC1CHK: ; Check INT0 interrupt request ; Check P00IEN ; Jump check to next interrupt ; Check P00IRQ ; Jump to INT0 interrupt service routine ; Check INT0 interrupt request ; Check P01IEN ; Jump check to next interrupt ; Check P01IRQ ; Jump to INT1 interrupt service routine ; Check T0 interrupt request ; Check T0IEN ; Jump check to next interrupt ; Check T0IRQ ; Jump to T0 interrupt service routine ; Check TC1 interrupt request ; Check TC1IEN ; Jump to exit of IRQ ; Check TC1IRQ ; Jump to TC1 interrupt service routine INT_EXIT: … ; Pop routine to load ACC and PFLAG from buffers. RETI ; Exit interrupt vector SONiX TECHNOLOGY CO., LTD Page 67 Version 1.4 SN8P2608 8-Bit Micro-Controller 7 I/O PORT 7.1 I/O PORT MODE The port direction is programmed by PnM register. All I/O ports can select input or output direction. 0B8H P0M Read/Write After reset Bit 7 P07M R/W 0 Bit 6 P06M R/W 0 Bit 5 P05M R/W 0 Bit 4 P04M R/W 0 Bit 3 P03M R/W 0 Bit 2 P02M R/W 0 Bit 1 P01M R/W 0 Bit 0 P00M R/W 0 0C1H P1M Read/Write After reset Bit 7 P17M R/W 0 Bit 6 P16M R/W 0 Bit 5 P15M R/W 0 Bit 4 P14M R/W 0 Bit 3 P13M R/W 0 Bit 2 P12M R/W 0 Bit 1 P12M R/W 0 Bit 0 P10M R/W 0 0C2H P2M Read/Write After reset Bit 7 P27M R/W 0 Bit 6 P26M R/W 0 Bit 5 P25M R/W 0 Bit 4 P24M R/W 0 Bit 3 P23M R/W 0 Bit 2 P22M R/W 0 Bit 1 P22M R/W 0 Bit 0 P20M R/W 0 0C4H P4M Read/Write After reset Bit 7 - Bit 6 P46M R/W 0 Bit 5 P45M R/W 0 Bit 4 P44M R/W 0 Bit 3 P43M R/W 0 Bit 2 P42M R/W 0 Bit 1 P42M R/W 0 Bit 0 P40M R/W 0 0C5H P5M Read/Write After reset Bit 7 P57M R/W 0 Bit 6 P56M R/W 0 Bit 5 P55M R/W 0 Bit 4 P54M R/W 0 Bit 3 P53M R/W 0 Bit 2 P52M R/W 0 Bit 1 P51M R/W 0 Bit 0 P50M R/W 0 Bit[7:0] PnM[7:0]: Pn mode control bits. (n = 0~5). 0 = Pn is input mode. 1 = Pn is output mode. Note: 1. Users can program them by bit control instructions (B0BSET, B0BCLR). 2. P4.7 is input only pin, and the P4M.7 keeps “1”. SONiX TECHNOLOGY CO., LTD Page 68 Version 1.4 SN8P2608 8-Bit Micro-Controller ¾ Example: I/O mode selecting CLR CLR CLR CLR CLR P0M P2M P4M P1M P5M ; Set all ports to be input mode. MOV B0MOV B0MOV B0MOV B0MOV B0MOV A, #0FFH P0M, A P1M, A P2M,A P4M,A P5M, A ; Set all ports to be output mode. B0BCLR P1M.2 ; Set P1.2 to be input mode. B0BSET P1M.2 ; Set P1.2 to be output mode. SONiX TECHNOLOGY CO., LTD Page 69 Version 1.4 SN8P2608 8-Bit Micro-Controller 7.2 I/O PULL UP REGISTER 0E0H P0UR Read/Write After reset Bit 7 P07R W 0 Bit 6 P06R W 0 Bit 5 P05R W 0 Bit 4 P04R W 0 Bit 3 P03R W 0 Bit 2 P02R W 0 Bit 1 P01R W 0 Bit 0 P00R W 0 0E1H P1UR Read/Write After reset Bit 7 P17R W 0 Bit 6 P16R W 0 Bit 5 P15R W 0 Bit 4 P14R W 0 Bit 3 P13R W 0 Bit 2 P12R W 0 Bit 1 P11R W 0 Bit 0 P10R W 0 0E2H P2UR Read/Write After reset Bit 7 P27R W 0 Bit 6 P26R W 0 Bit 5 P25R W 0 Bit 4 P24R W 0 Bit 3 P23R W 0 Bit 2 P22R W 0 Bit 1 P21R W 0 Bit 0 P20R W 0 0E4H P4UR Read/Write After reset Bit 7 - Bit 6 P46R W 0 Bit 5 P45R W 0 Bit 4 P44R W 0 Bit 3 P43R W 0 Bit 2 P42R W 0 Bit 1 P41R W 0 Bit 0 P40R W 0 0E5H P5UR Read/Write After reset Bit 7 P57R W 0 Bit 6 P56R W 0 Bit 5 P55R W 0 Bit 4 P54R W 0 Bit 3 P53R W 0 Bit 2 P52R W 0 Bit 1 P51R W 0 Bit 0 P50R W 0 Note: P4.7 is input only pin and without pull-up resister. The P4UR.7 keeps “1”. ¾ Example: I/O Pull up Register MOV B0MOV B0MOV B0MOV B0MOV B0MOV A, #0FFH P0UR, A P1UR, A P2UR,A P4UR,A P5UR, A SONiX TECHNOLOGY CO., LTD ; Enable Port0, 1, 2, 5 Pull-up register, ; Page 70 Version 1.4 SN8P2608 8-Bit Micro-Controller 7.3 I/O OPEN-DRAIN REGISTER P1.0, P1.1 are built-in open-drain function. P1.0, P1.1 must be set as output mode when enable open-drain function. Open-drain external circuit is as following. MCU2 MCU1 U U VCC Pull-up Resistor Open-drain pin Open-drain pin The pull-up resistor is necessary. Open-drain output high is driven by pull-up resistor. Output low is sunken by MCU’s pin. 0E9H P1OC Read/Write After reset Bit 7 - Bit 6 - Bit 5 - Bit 0 P10OC: P10 open-drain control bit 0 = Disable open-drain mode 1 = Enable open-drain mode Bit 1 P11OC: P11 open-drain control bit 0 = Disable open-drain mode 1 = Enable open-drain mode ¾ Bit 4 - Bit 3 - Bit 2 - Bit 0 P10OC W 0 Example: Enable P1.0 to open-drain mode and output high. B0BSET P1.0 ; Set P1.0 buffer high. B0BSET MOV B0MOV P10M A, #01H P1OC, A ; Enable P1.0 output mode. ; Enable P1.0 open-drain function. Note: P1OC is write only register. Setting P10OC must be used “MOV” instructions. ¾ Example: Disable P1.0 to open-drain mode and output low. MOV B0MOV Bit 1 P11OC W 0 A, #0 P1OC, A ; Disable P1.0 open-drain function. Note: After disable P1.0 open-drain function, P1.0 mode returns to last I/O mode. SONiX TECHNOLOGY CO., LTD Page 71 Version 1.4 SN8P2608 8-Bit Micro-Controller 7.4 I/O PORT DATA REGISTER 0D0H P0 Read/Write After reset Bit 7 P07 R/W 0 Bit 6 P06 R/W 0 Bit 5 P05 R/W 0 Bit 4 P04 R/W 0 Bit 3 P03 R/W 0 Bit 2 P02 R/W 0 Bit 1 P01 R/W 0 Bit 0 P00 R/W 0 0D1H P1 Read/Write After reset Bit 7 P17 R/W 0 Bit 6 P16 R/W 0 Bit 5 P15 R/W 0 Bit 4 P14 R/W 0 Bit 3 P13 R/W 0 Bit 2 P12 R/W 0 Bit 1 P11 R/W 0 Bit 0 P10 R/W 0 0D2H P2 Read/Write After reset Bit 7 P27 R/W 0 Bit 6 P26 R/W 0 Bit 5 P25 R/W 0 Bit 4 P24 R/W 0 Bit 3 P23 R/W 0 Bit 2 P22 R/W 0 Bit 1 P21 R/W 0 Bit 0 P20 R/W 0 0D4H P4 Read/Write After reset Bit 7 P47 R 0 Bit 6 P46 R/W 0 Bit 5 P45 R/W 0 Bit 4 P44 R/W 0 Bit 3 P43 R/W 0 Bit 2 P42 R/W 0 Bit 1 P41 R/W 0 Bit 0 P40 R/W 0 0D5H P5 Read/Write After reset Bit 7 P57 R/W 0 Bit 6 P56 R/W 0 Bit 5 P55 R/W 0 Bit 4 P54 R/W 0 Bit 3 P53 R/W 0 Bit 2 P52 R/W 0 Bit 1 P51 R/W 0 Bit 0 P50 R/W 0 Note: The P47 keeps “1” when external reset enable by code option. ¾ Example: Read data from input port. B0MOV A, P0 B0MOV A, P1 B0MOV A, P2 B0MOV A, P4 B0MOV A, P5 ¾ ¾ Example: Write data to output port. MOV A, #0FFH B0MOV P0, A B0MOV P1, A B0MOV P2, A B0MOV P4, A B0MOV P5, A Example: Write one bit data to output port. B0BSET P1.3 B0BSET P5.5 B0BCLR B0BCLR P1.3 P5.5 SONiX TECHNOLOGY CO., LTD ; Read data from Port 0 ; Read data from Port 1 ; Read data from Port 2 ; Read data from Port 4 ; Read data from Port 5 ; Write data FFH to all Port. ; Set P1.3 and P5.5 to be “1”. ; Set P1.3 and P5.5 to be “0”. Page 72 Version 1.4 SN8P2608 8-Bit Micro-Controller 8 TIMERS 8.1 WATCHDOG TIMER The watchdog timer (WDT) is a binary up counter designed for monitoring program execution. If the program goes into the unknown status by noise interference, WDT overflow signal raises and resets MCU. Watchdog clock controlled by code option and the clock source is internal low-speed oscillator (16KHz @3V, 32KHz @5V). Watchdog overflow time = 8192 / Internal Low-Speed oscillator (sec). VDD 3V 5V Internal Low RC Freq. 16KHz 32KHz Watchdog Overflow Time 512ms 256ms Note: 1. If watchdog is “Always_On” mode, it keeps running event under power down mode or green mode. 2. For S8KD ICE simulation, clear watchdog timer using “@RST_WDT” macro is necessary. Or the S8KD watchdog would be error. Watchdog clear is controlled by WDTR register. Moving 0x5A data into WDTR is to reset watchdog timer. 0CCH WDTR Read/Write After reset ¾ Bit 7 WDTR7 W 0 Bit 6 WDTR6 W 0 Bit 5 WDTR5 W 0 Bit 4 WDTR4 W 0 Bit 3 WDTR3 W 0 Bit 2 WDTR2 W 0 Bit 1 WDTR1 W 0 Bit 0 WDTR0 W 0 Example: An operation of watchdog timer is as following. To clear the watchdog timer counter in the top of the main routine of the program. Main: MOV B0MOV … … CALL CALL … … JMP A, #5AH WDTR, A ; Clear the watchdog timer. SUB1 SUB2 MAIN SONiX TECHNOLOGY CO., LTD Page 73 Version 1.4 SN8P2608 8-Bit Micro-Controller ¾ Example: Clear watchdog timer by @RST_WDT macro. Main: @RST_WDT … … CALL CALL … … JMP ; Clear the watchdog timer. SUB1 SUB2 MAIN Watchdog timer application note is as following. z Before clearing watchdog timer, check I/O status and check RAM contents can improve system error. z z Don’t clear watchdog timer in interrupt vector and interrupt service routine. That can improve main routine fail. Clearing watchdog timer program is only at one part of the program. This way is the best structure to enhance the watchdog timer function. ¾ Example: An operation of watchdog timer is as following. To clear the watchdog timer counter in the top of the main routine of the program. Main: Err: … … JMP $ ; Check I/O. ; Check RAM ; I/O or RAM error. Program jump here and don’t ; clear watchdog. Wait watchdog timer overflow to reset IC. Correct: B0BSET … CALL CALL … … … JMP FWDRST ; I/O and RAM are correct. Clear watchdog timer and ; execute program. ; Only one clearing watchdog timer of whole program. SUB1 SUB2 MAIN SONiX TECHNOLOGY CO., LTD Page 74 Version 1.4 SN8P2608 8-Bit Micro-Controller 8.2 TIMER 0 (T0) 8.2.1 OVERVIEW The T0 is an 8-bit binary up timer and event counter. If T0 timer occurs an overflow (from FFH to 00H), it will continue counting and issue a time-out signal to trigger T0 interrupt to request interrupt service. The main purposes of the T0 timer is as following. ) ) 8-bit programmable up counting timer: Generates interrupts at specific time intervals based on the selected clock frequency. Green mode wakeup function: T0 can be green mode wake-up time as T0ENB = 1. System will be wake-up by T0 time out. T0 Rate (Fcpu/2~Fcpu/256) T0ENB Internal Data Bus Load Fcpu T0C 8-Bit Binary Up Counting Counter T0 Time Out CPUM0,1 8.2.2 T0M MODE REGISTER 0D8H T0M Read/Write After reset Bit 7 T0ENB R/W 0 Bit 6 T0rate2 R/W 0 Bit 5 T0rate1 R/W 0 Bit [6:4] T0RATE[2:0]: T0 internal clock select bits. 000 = fcpu/256. 001 = fcpu/128. … 110 = fcpu/4. 111 = fcpu/2. Bit 7 T0ENB: T0 counter control bit. 0 = Disable T0 timer. 1 = Enable T0 timer. SONiX TECHNOLOGY CO., LTD Bit 4 T0rate0 R/W 0 Page 75 Bit 3 - Bit 2 - Bit 1 - Bit 0 - Version 1.4 SN8P2608 8-Bit Micro-Controller 8.2.3 T0C COUNTING REGISTER T0C is an 8-bit counter register for T0 interval time control. 0D9H T0C Read/Write After reset Bit 7 T0C7 R/W 0 Bit 6 T0C6 R/W 0 Bit 5 T0C5 R/W 0 Bit 4 T0C4 R/W 0 Bit 3 T0C3 R/W 0 Bit 2 T0C2 R/W 0 Bit 1 T0C1 R/W 0 Bit 0 T0C0 R/W 0 The equation of T0C initial value is as following. T0C initial value = 256 - (T0 interrupt interval time * input clock) ¾ Example: To set 10ms interval time for T0 interrupt. High clock is external 4MHz. Fcpu=Fosc/4. Select T0RATE=010 (Fcpu/64). T0C initial value = 256 - (T0 interrupt interval time * input clock) = 256 - (10ms * 4MHz / 4 / 64) = 256 - (10-2 * 4 * 106 / 4 / 64) = 100 = 64H The basic timer table interval time of T0. High speed mode (Fcpu = 4MHz / 4) T0RATE T0CLOCK Max overflow interval One step = max/256 000 Fcpu/256 65.536 ms 256 us 001 Fcpu/128 32.768 ms 128 us 010 Fcpu/64 16.384 ms 64 us 011 Fcpu/32 8.192 ms 32 us 100 Fcpu/16 4.096 ms 16 us 101 Fcpu/8 2.048 ms 8 us 110 Fcpu/4 1.024 ms 4 us 111 Fcpu/2 0.512 ms 2 us Low speed mode (Fcpu = 32768Hz / 4) Max overflow interval One step = max/256 8000 ms 31250 us 4000 ms 15625 us 2000 ms 7812.5 us 1000 ms 3906.25 us 500 ms 1953.125 us 250 ms 976.563 us 125 ms 488.281 us 62.5 ms 244.141 us Note: T0C doesn’t support read and modify write instructions as “B0ADD M,A . INCMS…”. SONiX TECHNOLOGY CO., LTD Page 76 Version 1.4 SN8P2608 8-Bit Micro-Controller 8.2.4 T0 TIMER OPERATION SEQUENCE T0 timer operation sequence of setup T0 timer is as following. ) Stop T0 timer counting, disable T0 interrupt function and clear T0 interrupt request flag. B0BCLR B0BCLR B0BCLR ) ) FT0ENB FT0IEN FT0IRQ ; T0 timer. ; T0 interrupt function is disabled. ; T0 interrupt request flag is cleared. MOV A, #0xxx0000b B0MOV T0M,A ;The T0 rate control bits exist in bit4~bit6 of T0M. The ; value is from x000xxxxb~x111xxxxb. ; T0 timer is disabled. Set T0 timer rate. Set T0 interrupt interval time. MOV B0MOV ) ; Set T0C value. FT0IEN ; Enable T0 interrupt function. FT0ENB ; Enable T0 timer. Set T0 timer function mode. B0BSET ) A,#7FH T0C,A Enable T0 timer. B0BSET SONiX TECHNOLOGY CO., LTD Page 77 Version 1.4 SN8P2608 8-Bit Micro-Controller 8.2.5 T0 TIMER NOTICE When T0C.7 is from “1” to “0”, T0IRQ is set “1” whether T0 is operating or not. If T0IRQ = 0 and T0C is changed by program, T0IRQ might be set as T0C.7 is from “1” to “0”. The condition makes unexpected T0 interrupt occurring. ¾ Example: T0C = 0x80 (T0C.7 = 1) and T0IRQ = 0. T0IRQ will set as “1” when T0C is cleared by program (T0C.7 = 0). MOV B0MOV A, #0 T0C, A ; Clear T0C and T0C.7 is from “1” to “0”. ; T0IRQ changed from “0” to “1”. B0BSET FT0IEN ; Enable T0 interrupt function and system jumps to interrupt ; vector (ORG 8) at next cycle. If T0C changing in system operating duration is necessary, to disable T0 interrupt function (T0IEN = 0) before changing T0C value. The solution can avoid unexpected T0 interrupt occurring and example is as following. ¾ Example: T0C = 0x80 and T0IRQ = 0. T0IRQ will change to “1” when T0C is cleared by program. B0BCLR FT0IEN ; Disable T0 interrupt function. MOV B0MOV A, #0 T0C, A ; Clear T0C and T0C.7 is from “1” to “0”. ; T0IRQ changed from “0” to “1”. B0BCLR FT0IRQ ; Clear T0IRQ flag. B0BSET … … FT0IEN ; Enable T0 interrupt function. Note: Disable T0 interrupt function first, and load new T0C value into T0C buffer. This way can avoid unexpected T0 interrupt occurring. Note: T0C doesn’t support read and modify write instructions as “B0ADD M,A . INCMS…”. SONiX TECHNOLOGY CO., LTD Page 78 Version 1.4 SN8P2608 8-Bit Micro-Controller 8.3 TIMER/COUNTER 1 (TC1) 8.3.1 OVERVIEW The TC1 is an 8-bit binary up counting timer. TC1 has two clock sources including internal clock and external clock for counting a precision time. The internal clock source is from Fcpu. The external clock is INT1 from P0.1 pin (Falling edge trigger). Using TC1M register selects TC1C’s clock source from internal or external. If TC1 timer occurs an overflow, it will continue counting and issue a time-out signal to trigger TC1 interrupt to request interrupt service. TC1 overflow time is 0xFF to 0X00 normally. Under PWM mode, TC1 overflow is still 256 counts. The main purposes of the TC1 timer is as following. ) ) ) ) 8-bit programmable up counting timer: Generates interrupts at specific time intervals based on the selected clock frequency. External event counter: Counts system “events” based on falling edge detection of external clock signals at the INT1 input pin. Buzzer output PWM output TC1OUT Internal P5.3 I/O Circuit ALOAD1 Buzzer Auto. Reload TC1 / 2 P5.3 TC1R Reload Data Buffer R TC1 Rate (Fcpu/2~Fcpu/256) TC1CKS Compare TC1ENB PWM1OUT PWM S Load Fcpu TC1C 8-Bit Binary Up Counting Counter TC1 Time Out INT1 (Schmitter Trigger) CPUM0,1 SONiX TECHNOLOGY CO., LTD Page 79 Version 1.4 SN8P2608 8-Bit Micro-Controller 8.3.2 TC1M MODE REGISTER 0DCH TC1M Read/Write After reset Bit 7 TC1ENB R/W 0 Bit 6 TC1rate2 R/W 0 Bit 5 TC1rate1 R/W 0 Bit 4 TC1rate0 R/W 0 Bit 3 TC1CKS R/W 0 Bit 2 ALOAD1 R/W 0 Bit 1 TC1OUT R/W 0 Bit 0 PWM1OUT: PWM output control bit. 0 = Disable PWM output. 1 = Enable PWM output. PWM duty controlled by TC1OUT, ALOAD1 bits. Bit 1 TC1OUT: TC1 time out toggle signal output control bit. Only valid when PWM1OUT = 0. 0 = Disable, P5.3 is I/O function. 1 = Enable, P5.3 is output TC1OUT signal. Bit 2 ALOAD1: Auto-reload control bit. Only valid when PWM1OUT = 0. 0 = Disable TC1 auto-reload function. 1 = Enable TC1 auto-reload function. Bit 3 TC1CKS: TC1 clock source select bit. 0 = Internal clock (Fcpu). 1 = External clock from P0.1/INT1 pin. Bit [6:4] TC1RATE[2:0]: TC1 internal clock select bits. 000 = fcpu/256. 001 = fcpu/128. … 110 = fcpu/4. 111 = fcpu/2. Bit 7 TC1ENB: TC1 counter control bit. 0 = Disable TC1 timer. 1 = Enable TC1 timer. Bit 0 PWM1OUT R/W 0 Note: When TC1CKS=1, TC1 became an external event counter and TC1RATE is useless. No more P0.1 interrupt request will be raised. (P0.1IRQ will be always 0). SONiX TECHNOLOGY CO., LTD Page 80 Version 1.4 SN8P2608 8-Bit Micro-Controller 8.3.3 TC1C COUNTING REGISTER TC1C is an 8-bit counter register for TC1 interval time control. 0DDH TC1C Read/Write After reset Bit 7 TC1C7 R/W 0 Bit 6 TC1C6 R/W 0 Bit 5 TC1C5 R/W 0 Bit 4 TC1C4 R/W 0 Bit 3 TC1C3 R/W 0 Bit 2 TC1C2 R/W 0 Bit 1 TC1C1 R/W 0 Bit 0 TC1C0 R/W 0 The equation of TC1C initial value is as following. TC1C initial value = 256 - (TC1 interrupt interval time * input clock) ¾ Example: To set 10ms interval time for TC1 interrupt. TC1 clock source is Fcpu (TC1KS=0). High clock is external 4MHz. Fcpu=Fosc/4. Select TC1RATE=010 (Fcpu/64). TC1C initial value = 256 - (TC1 interrupt interval time * input clock) = 256 - (10ms * 4MHz / 4 / 64) = 256 - (10-2 * 4 * 106 / 4 / 64) = 100 = 64H The basic timer table interval time of TC1. High speed mode (Fcpu = 4MHz / 4) TC1RATE TC1CLOCK Max overflow interval One step = max/256 000 Fcpu/256 65.536 ms 256 us 001 Fcpu/128 32.768 ms 128 us 010 Fcpu/64 16.384 ms 64 us 011 Fcpu/32 8.192 ms 32 us 100 Fcpu/16 4.096 ms 16 us 101 Fcpu/8 2.048 ms 8 us 110 Fcpu/4 1.024 ms 4 us 111 Fcpu/2 0.512 ms 2 us SONiX TECHNOLOGY CO., LTD Page 81 Low speed mode (Fcpu = 32768Hz / 4) Max overflow interval One step = max/256 8000 ms 31250 us 4000 ms 15625 us 2000 ms 7812.5 us 1000 ms 3906.25 us 500 ms 1953.125 us 250 ms 976.563 us 125 ms 488.281 us 62.5 ms 244.141 us Version 1.4 SN8P2608 8-Bit Micro-Controller 8.3.4 TC1R AUTO-LOAD REGISTER TC1 timer is with auto-load function controlled by ALOAD1 bit of TC1M. When TC1C overflow occurring, TC1R value will load to TC1C by system. It is easy to generate an accurate time, and users don’t reset TC1C during interrupt service routine. 0DEH TC1R Read/Write After reset Bit 7 TC1R7 W 0 Bit 6 TC1R6 W 0 Bit 5 TC1R5 W 0 Bit 4 TC1R4 W 0 Bit 3 TC1R3 W 0 Bit 2 TC1R2 W 0 Bit 1 TC1R1 W 0 Bit 0 TC1R0 W 0 The equation of TC1R initial value is as following. TC1R initial value = N - (TC1 interrupt interval time * input clock) N is TC1 overflow boundary number. TC1 timer overflow time has five types (TC1 timer, TC1 event counter, TC1 Fcpu clock source, PWM mode and no PWM mode). These parameters decide TC1 overflow time and valid value as follow table. TC1CKS PWM1 ALOAD1 TC1OUT 0 1 ¾ 0 1 1 1 1 - x 0 0 1 1 - x 0 1 0 1 - N 256 256 64 32 16 256 TC1R valid value 0x00~0xFF 0x00~0xFF 0x00~0x3F 0x00~0x1F 0x00~0x0F 0x00~0xFF TC1R value binary type 00000000b~11111111b 00000000b~11111111b xx000000b~xx111111b xxx00000b~xxx11111b xxxx0000b~xxxx1111b 00000000b~11111111b Example: To set 10ms interval time for TC1 interrupt. TC1 clock source is Fcpu (TC1KS=0) and no PWM output (PWM1=0). High clock is external 4MHz. Fcpu=Fosc/4. Select TC1RATE=010 (Fcpu/64). TC1R initial value = N - (TC1 interrupt interval time * input clock) = 256 - (10ms * 4MHz / 4 / 64) = 256 - (10-2 * 4 * 106 / 4 / 64) = 100 = 64H SONiX TECHNOLOGY CO., LTD Page 82 Version 1.4 SN8P2608 8-Bit Micro-Controller 8.3.5 TC1 CLOCK FREQUENCY OUTPUT (BUZZER) Buzzer output (TC1OUT) is from TC1 timer/counter frequency output function. By setting the TC1 clock frequency, the clock signal is output to P5.3 and the P5.3 general purpose I/O function is auto-disable. The TC1OUT frequency is divided by 2 from TC1 interval time. TC1OUT frequency is 1/2 TC1 frequency. The TC1 clock has many combinations and easily to make difference frequency. The TC1OUT frequency waveform is as following. 1 2 3 4 TC1 Overflow Clock 1 2 3 4 TC1OUT (Buzzer) Output Clock ¾ Example: Setup TC1OUT output from TC1 to TC1OUT (P5.3). The external high-speed clock is 4MHz. The TC1OUT frequency is 0.5KHz. Because the TC1OUT signal is divided by 2, set the TC1 clock to 1KHz. The TC1 clock source is from external oscillator clock. TC1 rate is Fcpu/4. The TC1RATE2~TC1RATE1 = 110. TC1C = TC1R = 131. MOV B0MOV A,#01100000B TC1M,A MOV B0MOV B0MOV A,#131 TC1C,A TC1R,A ; Set the auto-reload reference value B0BSET B0BSET B0BSET FTC1OUT FALOAD1 FTC1ENB ; Enable TC1 output to P5.3 and disable P5.3 I/O function ; Enable TC1 auto-reload function ; Enable TC1 timer ; Set the TC1 rate to Fcpu/4 Note: Buzzer output is enable, and “PWM1OUT” must be “0”. SONiX TECHNOLOGY CO., LTD Page 83 Version 1.4 SN8P2608 8-Bit Micro-Controller 8.3.6 TC1 TIMER OPERATION SEQUENCE TC1 timer operation includes timer interrupt, event counter, TC1OUT and PWM. The sequence of setup TC1 timer is as following. ) Stop TC1 timer counting, disable TC1 interrupt function and clear TC1 interrupt request flag. B0BCLR B0BCLR B0BCLR ) ) FTC1ENB FTC1IEN FTC1IRQ Set TC1 timer rate. (Besides event counter mode.) MOV A, #0xxx0000b B0MOV TC1M,A ;The TC1 rate control bits exist in bit4~bit6 of TC1M. The ; value is from x000xxxxb~x111xxxxb. ; TC1 timer is disabled. Set TC1 timer clock source. ; Select TC1 internal / external clock source. B0BCLR FTC1CKS or B0BSET FTC1CKS ) ; TC1 timer, TC1OUT and PWM stop. ; TC1 interrupt function is disabled. ; TC1 interrupt request flag is cleared. ; Select TC1 internal clock source. ; Select TC1 external clock source. Set TC1 timer auto-load mode. B0BCLR FALOAD1 ; Enable TC1 auto reload function. B0BSET FALOAD1 ; Disable TC1 auto reload function. or ) Set TC1 interrupt interval time, TC1OUT (Buzzer) frequency or PWM duty cycle. ; Set TC1 interrupt interval time, TC1OUT (Buzzer) frequency or PWM duty. MOV A,#7FH ; TC1C and TC1R value is decided by TC1 mode. B0MOV TC1C,A ; Set TC1C value. B0MOV TC1R,A ; Set TC1R value under auto reload mode or PWM mode. ; In PWM mode, set PWM cycle. B0BCLR B0BCLR or B0BCLR B0BSET or B0BSET B0BCLR or B0BSET B0BSET FALOAD1 FTC1OUT ; ALOAD1, TC1OUT = 00, PWM cycle boundary is 0~255. FALOAD1 FTC1OUT ; ALOAD1, TC1OUT = 01, PWM cycle boundary is 0~63. FALOAD1 FTC1OUT ; ALOAD1, TC1OUT = 10, PWM cycle boundary is 0~31. FALOAD1 FTC1OUT ; ALOAD1, TC1OUT = 11, PWM cycle boundary is 0~15. SONiX TECHNOLOGY CO., LTD Page 84 Version 1.4 SN8P2608 8-Bit Micro-Controller ) Set TC1 timer function mode. B0BSET FTC1IEN ; Enable TC1 interrupt function. B0BSET FTC1OUT ; Enable TC1OUT (Buzzer) function. B0BSET FPWM1OUT ; Enable PWM function. FTC1ENB ; Enable TC1 timer. or or ) Enable TC1 timer. B0BSET 8.3.7 TC1 TIMER NOTICE When TC1C value changes from “0xFF” to not “0xFF”, TC1IRQ is set “1” whether TC1 is operating or not. If TC1IRQ = 0 and TC1C is changed by program, TC1IRQ might be set as TC1C is from “0xFF” to not “0xFF”. The condition makes unexpected TC1 interrupt occurring. ¾ Example: TC1C = 0xFF and TC1IRQ = 0. TC1IRQ will set as “1” when TC1C is cleared by program (TC1C = 0). MOV B0MOV A, #0 TC1C, A ; Clear TC1C. ; TC1IRQ changed from “0” to “1”. B0BSET FTC1IEN ; Enable TC1 interrupt function and system jumps to interrupt ; vector (ORG 8) at next cycle. If TC1C changing in system operating duration is necessary, to disable TC1 interrupt function (TC1IEN = 0) before changing TC1C value. The solution can avoid unexpected TC1 interrupt occurring and example is as following. ¾ Example: TC1C = 0xFF and TC1IRQ = 0. Clearing TC1C must be after TC1 interrupt disable. B0BCLR FTC1IEN ; Disable TC1 interrupt function. MOV B0MOV A, #0 TC1C, A ; Clear TC1C. ; TC1IRQ changed from “0” to “1”. B0BCLR FTC1IRQ ; Clear TC1IRQ flag. B0BSET … … FTC1IEN ; Enable TC1 interrupt function. Note: Disable TC1 interrupt function first, and load new TC1C value into TC1C buffer. This way can avoid unexpected TC1 interrupt occurring. 8.4 PWM1 MODE SONiX TECHNOLOGY CO., LTD Page 85 Version 1.4 SN8P2608 8-Bit Micro-Controller 8.4.1 OVERVIEW PWM function is generated by TC1 timer counter and output the PWM signal to PWM1OUT pin (P5.3). The 8-bit counter counts modulus 256, 64, 32, 16 controlled by ALOAD1, TC1OUT bits. The value of the 8-bit counter (TC1C) is compared to the contents of the reference register (TC1R). When the reference register value (TC1R) is equal to the counter value (TC1C), the PWM output goes low. When the counter reaches zero, the PWM output is forced high. The low-to-high ratio (duty) of the PWM1 output is TC1R/256, 64, 32, 16. ALOAD1 TC1OUT PWM duty range 0 0 1 1 0 1 0 1 MAX. PWM Frequency (Fcpu = 4MHz) 7.8125K 31.25K 62.5K 125K TC1C valid value TC1R valid bits value 0/256~255/256 0/64~63/64 0/32~31/32 0/16~15/16 0x00~0xFF 0x00~0x3F 0x00~0x1F 0x00~0x0F 0x00~0xFF 0x00~0x3F 0x00~0x1F 0x00~0x0F Remark Overflow per 256 count Overflow per 64 count Overflow per 32 count Overflow per 16 count The Output duty of PWM is with different TC1R. Duty range is from 0/256~255/256. 0 1 128 …… …… 254 255 0 1 …… 128 …… 254 255 TC1 Clock TC1R=00H TC1R=01H Low High Low High TC1R=80H TC1R=FFH SONiX TECHNOLOGY CO., LTD Low High Low Page 86 Version 1.4 SN8P2608 8-Bit Micro-Controller 8.4.2 TC1IRQ AND PWM DUTY In PWM mode, the frequency of TC1IRQ is depended on PWM duty range. From following diagram, the TC1IRQ frequency is related with PWM duty. TC1 Overflow, TC1IRQ = 1 0xFF TC1C Value 0x00 PWM1 Output (Duty Range 0~255) PWM1 Output (Duty Range 0~63) PWM1 Output (Duty Range 0~31) PWM1 Output (Duty Range 0~15) SONiX TECHNOLOGY CO., LTD Page 87 Version 1.4 SN8P2608 8-Bit Micro-Controller 8.4.3 PWM PROGRAM EXAMPLE Example: Setup PWM1 output from TC1 to PWM1OUT (P5.3). The external high-speed oscillator clock is 4MHz. Fcpu = Fosc/4. The duty of PWM is 30/256. The PWM frequency is about 1KHz. The PWM clock source is from external oscillator clock. TC1 rate is Fcpu/4. The TC1RATE2~TC1RATE1 = 110. TC1C = TC1R = 30. MOV B0MOV A,#01100000B TC1M,A MOV B0MOV B0MOV A,#30 TC1C,A TC1R,A ; Set the PWM duty to 30/256 B0BCLR B0BCLR B0BSET B0BSET FTC1OUT FALOAD1 FPWM1OUT FTC1ENB ; Set duty range as 0/256~255/256. ; Set the TC1 rate to Fcpu/4 ; Enable PWM1 output to P5.3 and disable P5.3 I/O function ; Enable TC1 timer Note: The TC1R is write-only register. Don’t process them using INCMS, DECMS instructions. Example: Modify TC1R registers’ value. MOV B0MOV A, #30H TC1R, A ; Input a number using B0MOV instruction. INCMS NOP B0MOV B0MOV BUF0 ; Get the new TC1R value from the BUF0 buffer defined by ; programming. A, BUF0 TC1R, A Note: The PWM can work with interrupt request. SONiX TECHNOLOGY CO., LTD Page 88 Version 1.4 SN8P2608 8-Bit Micro-Controller 8.4.4 PWM1 DUTY CHANGING NOTICE In PWM mode, the system will compare TC1C and TC1R all the time. When TC1C<TC1R, the PWM will output logic “High”, when TC1C≧TC1R, the PWM will output logic “Low”. If TC1C is changed in certain period, the PWM duty will change immediately. If TC1R is fixed all the time, the PWM waveform is also the same. TC1C = TC1R TC1C overflow and TC1IRQ set 0xFF TC1C Value 0x00 PWM1 Output Period 1 2 3 4 5 6 7 Above diagram is shown the waveform with fixed TC1R. In every TC1C overflow PWM output “High, when TC1C≧ TC1R PWM output ”Low”. Note: Setting PWM duty in program processing must be at the new cycle start. SONiX TECHNOLOGY CO., LTD Page 89 Version 1.4 SN8P2608 8-Bit Micro-Controller If TC1R is changing in the program processing, the PWM waveform will became as following diagram. TC1C < TC1R PWM Low > High TC1C > = TC1R PWM High > Low TC1C overflow and TC1IRQ set Update New TC1R! Old TC1R < TC1C < New TC1R Old TC1R 0xFF Update New TC1R! New TC1R < TC1C < Old TC1R New TC1R New TC1R Old TC1R TC1C Value 0x00 PWM1 Output Period 1 1st PWM 2 Update PWM Duty 3 2nd PWM 4 Update PWM Duty 5 3th PWM In period 2 and period 4, new Duty (TC1R) is set, but the PWM output waveform of period 2 and period 4 are wrong. In period 2, the new TC1R value is greater than old TC1R value. If setting new TC1R is after PWM output “low”, system is getting TC1C < TC1R result and making PWM output “high”. There are two high level periods in the cycle, and the waveform is unexpected. Until next cycle, PWM outputs correct duty. In period 4, the new TC1R value is smaller than the old TC1R value. If setting new TC1R is before PWM output “low”, system is getting TC1C≧TC1R result and making PWM output “low”. In the cycle, the high duty is shorter than last cycle and longer than correct cycle. It is an unexpected PWM output. Though the wrong waveforms only exist in one cycle, it is still a problem for precise PWM application and might make outside loading operations error. The solution is to load new TC1R after TC1 timer overflow. Using TC1IRQ status to determine TC1 timer is overflow or not. When TC1IRQ becomes “1”, to set the new TC1R value into TC1R buffer, and the unexpected PWM output is resolved. Example: Using TC1 interrupt function to set new TC1R value for changing PWM duty. MAIN: … B0MOV … … TC1RBUF, A ; Load new PWM duty setting value into TC1RBUF. INT_SER: … … B0BTS1 JMP B0MOV B0MOV … … ; Push routine to save ACC and PFLAG to buffers. FTC1IRQ INT_SER90 A, TC1RBUF TC1R, A ; When TC1 Interrupt occurs, update TC1R. INT_SER90: … RETI SONiX TECHNOLOGY CO., LTD ; Pop routine to load ACC and PFLAG from buffers. Page 90 Version 1.4 SN8P2608 8-Bit Micro-Controller 9 Field M O V E A R I T H M E T I C L O G I C P R O C E S S B R A N C H INSTRUCTION TABLE Mnemonic MOV A,M MOV M,A B0MOV A,M B0MOV M,A MOV A,I B0MOV M,I XCH A,M B0XCH A,M MOVC A←M M←A A ← M (bank 0) M (bank 0) ← A A←I M ← I, “M” only supports 0x80~0x87 registers (e.g. PFLAG,R,Y,Z…) A ←→M A ←→M (bank 0) R, A ← ROM [Y,Z] Description C - DC - Z √ √ - Cycle 1 1 1 1 1 1 1+N 1+N 2 ADC ADC ADD ADD B0ADD ADD SBC SBC SUB SUB SUB A,M M,A A,M M,A M,A A,I A,M M,A A,M M,A A,I A ← A + M + C, if occur carry, then C=1, else C=0 M ← A + M + C, if occur carry, then C=1, else C=0 A ← A + M, if occur carry, then C=1, else C=0 M ← A + M, if occur carry, then C=1, else C=0 M (bank 0) ← M (bank 0) + A, if occur carry, then C=1, else C=0 A ← A + I, if occur carry, then C=1, else C=0 A ← A - M - /C, if occur borrow, then C=0, else C=1 M ← A - M - /C, if occur borrow, then C=0, else C=1 A ← A - M, if occur borrow, then C=0, else C=1 M ← A - M, if occur borrow, then C=0, else C=1 A ← A - I, if occur borrow, then C=0, else C=1 √ √ √ √ √ √ √ √ √ √ √ - √ √ √ √ √ √ √ √ √ √ √ 1 1+N 1 1+N 1+N 1 1 1+N 1 1+N 1 A ← A and M M ← A and M A ← A and I A ← A or M M ← A or M A ← A or I A ← A xor M M ← A xor M A ← A xor I √ √ √ √ √ √ √ √ √ √ √ - AND AND AND OR OR OR XOR XOR XOR A,M M,A A,I A,M M,A A,I A,M M,A A,I 1 1+N 1 1 1+N 1 1 1+N 1 M M M M M M M M.b M.b M.b M.b A (b3~b0, b7~b4) ←M(b7~b4, b3~b0) M(b3~b0, b7~b4) ← M(b7~b4, b3~b0) A ← RRC M M ← RRC M A ← RLC M M ← RLC M M←0 M.b ← 0 M.b ← 1 M(bank 0).b ← 0 M(bank 0).b ← 1 √ √ √ √ - - √ √ √ √ √ √ √ √ √ - SWAP SWAPM RRC RRCM RLC RLCM CLR BCLR BSET B0BCLR B0BSET 1 1+N 1 1+N 1 1+N 1 1+N 1+N 1+N 1+N CMPRS CMPRS INCS INCMS DECS DECMS BTS0 BTS1 B0BTS0 B0BTS1 JMP CALL A,I A,M M M M M M.b M.b M.b M.b d d ZF,C ← A - I, If A = I, then skip next instruction ZF,C ← A – M, If A = M, then skip next instruction A ← M + 1, If A = 0, then skip next instruction M ← M + 1, If M = 0, then skip next instruction A ← M - 1, If A = 0, then skip next instruction M ← M - 1, If M = 0, then skip next instruction If M.b = 0, then skip next instruction If M.b = 1, then skip next instruction If M(bank 0).b = 0, then skip next instruction If M(bank 0).b = 1, then skip next instruction PC15/14 ← RomPages1/0, PC13~PC0 ← d Stack ← PC15~PC0, PC15/14 ← RomPages1/0, PC13~PC0 ← d √ √ - - √ √ - 1+S 1+S 1+ S 1+N+S 1+ S 1+N+S 1+S 1+S 1+S 1+S 2 2 √ - √ - √ - 2 2 1 1 1 RET PC ← Stack RETI PC ← Stack, and to enable global interrupt PUSH To push ACC and PFLAG (except NT0, NPD bit) into buffers. POP To pop ACC and PFLAG (except NT0, NPD bit) from buffers. NOP No operation Note: 1. “M” is system register or RAM. If “M” is system registers then “N” = 0, otherwise “N” = 1. 2. If branch condition is true then “S = 1”, otherwise “S = 0”. M I S C SONiX TECHNOLOGY CO., LTD Page 91 Version 1.4 SN8P2608 8-Bit Micro-Controller 10 ELECTRICAL CHARACTERISTIC 10.1 ABSOLUTE MAXIMUM RATING Supply voltage (Vdd)………………………………………………………………………………….………………………………………………… - 0.3V ~ 6.0V Input in voltage (Vin)…………………………………………………………………………………………………………………….… Vss – 0.2V ~ Vdd + 0.2V Operating ambient temperature (Topr) SN8P2608P, SN8P2608X, SN8P2606P ………………………………………………………………………………………………….. 0°C ~ + 70°C SN8P2608PD, SN8P2608XD, SN8P2606PD ……………………………………………………………………………………………. –40°C ~ + 85°C Storage ambient temperature (Tstor) ………………………………………………………………….………………………………………… –40°C ~ + 125°C 10.2 ELECTRICAL CHARACTERISTIC (All of voltages refer to Vss, Vdd = 5.0V, fosc = 4MHz, ambient temperature is 25°C unless otherwise note.) PARAMETER SYM. DESCRIPTION MIN. TYP. Operating voltage Vdd RAM Data Retention voltage Vdd rise rate Vdr Vpor ViL1 ViL2 ViH1 Input Low Voltage Normal mode, Vpp = Vdd, 25°C MAX. UNIT 2.4 5.0 5.5 V Vdd rise rate to ensure internal power-on reset All input ports Reset pin All input ports 2.5 1.5 0.05 Vss Vss 0.7Vdd 5.0 - 5.5 0.3Vdd 0.2Vdd Vdd V V V/ms V V V Normal mode, Vpp = Vdd, -40°C~85°C Input High Voltage ViH2 Reset pin 0.9Vdd - Vdd V Reset pin leakage current Ilekg Rup I/O port input leakage current I/O output source current sink current INTn trigger pulse width Ilekg IoH IoL Tint0 100 50 8 8 2/fcpu - 200 100 12 15 2.5 2 300 150 2 5 uA I/O port pull-up resistor Vin = Vdd Vin = Vss , Vdd = 3V Vin = Vss , Vdd = 5V Pull-up resistor disable, Vin = Vdd Vop = Vdd – 0.5V Vop = Vss + 0.5V INT0 interrupt request pulse width Vdd= 5V, 4Mhz normal Mode (No loading, Vdd= 3V, 4Mhz Fcpu = Fosc/4) Slow Mode Vdd= 5V, 32Khz (Internal low RC, Stop Vdd= 3V, 16Khz high clock) Vdd= 5V, 25°C Vdd= 3V , 25°C Sleep Mode Vdd= 5V, -40°C~85°C Vdd= 3V , -40°C~85°C Vdd= 5V, 4Mhz Green Mode cycle mA Idd1 Idd2 Supply Current Idd3 Idd4 LVD detect level VLVD (No loading, Fcpu = Fosc/4, Watchdog Disable) Vdd= 3V, 4Mhz Vdd=5V, ILRC 32Khz Vdd=3V, ILRC 16Khz Low voltage detect level KΩ uA mA - 1 2 mA - 25 50 uA - 5 10 uA - 1 0.7 10 10 0.50 2 1.5 21 21 1 uA uA uA uA mA - 0.20 0.4 mA 1.4 15 3 1.8 30 6 2.3 uA uA V *These parameters are for design reference, not tested. SONiX TECHNOLOGY CO., LTD Page 92 Version 1.4 SN8P2608 8-Bit Micro-Controller 10.3 CHARACTERISTIC GRAPHS The Graphs in this section are for design guidance, not tested or guaranteed. In some graphs, the data presented are outside specified operating range. This is for information only and devices are guaranteed to operate properly only within the specified range. SN8P2608 VDD 5 .5 5 .0 4 .5 Wo rk ing area 4 .0 3 .5 3 .0 2 .5 Fcp u 2 .0 1M 2M 4M 8M 1 2M 16 M Working Voltage vs. Frequency (Noise Filter Disable、25℃) SONiX TECHNOLOGY CO., LTD Page 93 Version 1.4 SN8P2608 8-Bit Micro-Controller 11 APPLICATION NOTICE 11.1 Development Tool Version 11.1.1 ICE (In circuit emulation) z S8KD-2 ICE: S8KD-2 ICE is designed for SN8P1XXX series emulation. There are some limitations if use S8KD-2 ICE emulates SN8P2608/SN8P2606 please refer following S8KD-2 ICE emulation notice section z SN8ICE 2K: Full function emulates SN8P2608/SN8P2606 11.1.2 OTP Writer z Writer 3.0: Support SN8P2608/SN8P2606 but no Stand-alone mode. z Easy Writer V1.0: OTP programming is controlled by ICE without firmware upgrade suffers. Please refer easy writer user manual for detailed information. z MP-Easy Writer V1.0: Stand-alone operation to support SN8P2608/SN8P2606 mass production 11.1.3 SN8IDE SONiX 8-bit MCU integrated development environment include Assembler, ICE debugger and OTP writer software. z For S8KD-2 ICE: SN8IDE_V1.99R. SN8IDE V1.99S or later No More support SN8P2000 series emulation. z For SN8ICE 2K: M2IDE_V107 or later z For Writer 3.0 and Easy Writer: M2IDE_V107 or later SONiX TECHNOLOGY CO., LTD Page 94 Version 1.4 SN8P2608 8-Bit Micro-Controller 11.2 CODE OPTION 11.2.1 NOISE FILTER CODE OPTION In high AC noisy environment should enable Noise_Filter code option. Enable Noise_Filter can reduce external noise affecting system of operating. If Noise_Filter enable, the Fcpu is limited in “Fosc/4~Fosc/8”. Noise_Filter Fcpu Enable Disable Fosc/4~Fosc/8 Fosc/1~Fosc/8 11.2.2 WATCHDOG Watchdog of SN8P2608 includes three operations as Enable, Disable, Always On controlled by code option. ¾ Watchdog Enable: If watchdog timer overflow during program running, the system resets. Watchdog timer stops in green mode and power down mode (sleep mode). After system wake-up, watchdog timer is running again. ¾ Watchdog Always On: Watchdog timer keeps running in green mode or power down mode (sleep mode). If watchdog overflow occurs under the two modes, the system would be reset. It is not easy to make system to keep green mode/ power down mode situations. The main purpose of the design is supporting high AC noisy application. The watchdog timer guards system to work well and good reliability in high noisy situation. SONiX TECHNOLOGY CO., LTD Page 95 Version 1.4 SN8P2608 8-Bit Micro-Controller 11.3 INTERRUPT VECTOR (ORG 8) When one of interrupt requests occurs, system will jump to interrupt vector and execute interrupt service routine. The first instruction of interrupt vector (ORG 8) must be “JMP” or “NOP”. The SN8ASM199N and later version compilers alerts the message if the interrupt vector first instruction is not “JMP” or “NOP”. ¾ Example: The interrupt service routine is following ORG 8. .CODE ORG JMP … 0 START ; 0000H ; Jump to user program address. ORG NOP 8 ; Interrupt service routine ; The first instruction at ORG 8. … ; End of interrupt service routine RETI … START: … … JMP … ; The head of user program. ; User program START ; End of program ENDP ¾ ; End of user program Example: The interrupt service routine is following user program. .CODE ORG JMP … 0 START ; 0000H ; Jump to user program address. ORG JMP 08 MY_IRQ ; 0008H, Jump to interrupt service routine address. ORG 10H START: … … … JMP … ; 0010H, The head of user program. ; User program. START MY_IRQ: ; End of user program. ;The head of interrupt service routine. … RETI … ; End of interrupt service routine. ENDP ; End of program. SONiX TECHNOLOGY CO., LTD Page 96 Version 1.4 SN8P2608 8-Bit Micro-Controller 11.4 S8KD-2 ICE ENULATION SN8IDE is SONIX 8-bit development software including Assembler/ICE Debugger/OTP Writer. S8KD-2 is SONIX 8-bit ICE EV chip. There are different specifications between SN8P2608 and EV Chip. SONIX provides macros to solve the difference and make emulation correct. SN8IDE_V1.99R_S8KD2 and later version support these macros. Note: 1. Please use SN8IDE V1.99R to develop projects! 2. SN8IDE V1.99S or later No More support SN8P2000 series emulation. 11.4.1 ICE_MODE ICE_MODE setting is necessary. ICE_MODE = 1 supports S8KD-2 ICE emulation. ICE_MODE = 0 is real chip mode. Syntax: ICE_MODE Val Val: 0 = Real chip. 1 = S8KD-2 ICE emulation. ¾ Example: Setting ICE mode for ICE emulation. After compiling, the code only supports ICE emulation and can’t work correct in real chip. CHIP .DATA SN8P2608 ICE_MODE EQU 1 INCLUDESTD SN8P2X_ICE.H ; Set ICE_MODE for ICE emulation. .CODE User program … ¾ Example: Setting ICE mode for real chip. After compiling, the code only supports SN8P2608 and can’t work correct in ICE emulation. CHIP .DATA SN8P2608 ICE_MODE EQU 0 INCLUDESTD SN8P2X_ICE.H ; Set ICE_MODE for real chip. .CODE User program … Note:1. After ICE emulation and verifying all functions, set ICE_MODE = 0 and compile firmware again for real chip programming. 2. Please use the ICE_MODE = 0 checksum for real chip code. Don’t use ICE_MODE = 1 checksum which only support ICE emulation, not real chip. SONiX TECHNOLOGY CO., LTD Page 97 Version 1.4 SN8P2608 8-Bit Micro-Controller 11.4.2 INSTRUCTION CYCLE Instruction cycles of some instructions are different between SN8P2608/2606 and EV chip. These differences makes ICE instruction timing isn’t consistent with SN8P2608/2606. SN8IDE assembler provides some macros to solve instruction cycle difference as following. Users just only use built-in instruction macro to replace corresponding instruction. In “ICE_MODE EQU 1” ICE emulation mode, assembler maybe insert some extra code to synchronize instruction timing between ICE and real chip. Therefore, the maximum available ROM size is larger than real chip. In “ICE_MODE EQU 0” the ROM size is same as real chip. Field M O V E A R I T H M E T I C L O G I C P R O C E S S B R A N C H M I S C SN8P2608 Mnemonic MOV A,M MOV M,A B0MOV A,M B0MOV M,A MOV A,I B0MOV M,I XCH A,M B0XCH A,M MOVC ADC A,M ADC M,A ADD A,M ADD M,A B0ADD M,A ADD A,I SBC A,M SBC M,A SUB A,M SUB M,A SUB A,I AND A,M AND M,A AND A,I OR A,M OR M,A OR A,I XOR A,M XOR M,A XOR A,I SWAP M SWAPM M RRC M RRCM M RLC M RLCM M CLR M BCLR M.b BSET M.b B0BCLR M.b B0BSET M.b CMPRS A,I CMPRS A,M INCS M INCMS M DECS M DECMS M BTS0 M.b BTS1 M.b B0BTS0 M.b B0BTS1 M.b JMP d CALL d RET RETI NOP PUSH POP Cycle 1 1 1 1 1 1 1+N 1+N 2 1 1+A 1 1+N 1+N 1 1 1+N 1 1+N 1 1 1+N 1 1 1+N 1 1 1+N 1 1 1+N 1 1+N 1 1+N 1 1+N 1+N 1+N 1+N 1+S 1+S 1+S 1+N+S 1+S 1+N+S 1+S 1+S 1+S 1+S 2 2 2 2 1 1 1 SONiX TECHNOLOGY CO., LTD Field M O V E A R I T H M E T I C L O G I C P R O C E S S B R A N C H M I S C S8KD-2 EV CHIP Mnemonic MOV A,M MOV M,A B0MOV A,M B0MOV M,A MOV A,I B0MOV M,I XCH A,M B0XCH A,M MOVC ADC A,M ADC M,A ADD A,M ADD M,A B0ADD M,A ADD A,I SBC A,M SBC M,A SUB A,M SUB M,A SUB A,I AND A,M AND M,A AND A,I OR A,M OR M,A OR A,I XOR A,M XOR M,A XOR A,I SWAP M SWAPM M RRC M RRCM M RLC M RLCM M CLR M BCLR M.b BSET M.b B0BCLR M.b B0BSET M.b CMPRS A,I CMPRS A,M INCS M INCMS M DECS M DECMS M BTS0 M.b BTS1 M.b B0BTS0 M.b B0BTS1 M.b JMP d CALL d RET RETI NOP PUSH POP Page 98 Cycle 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1+S 1+S 1+S 1+S 1+S 1+S 1+S 1+S 1+S 1+S 2 2 2 2 1 1 1 INSTRUCTION MACRO @XCH A,M @B0XCH A,M @ADC M,A @ADD M,A @B0ADD M,A @SBC M,A @SUB M,A @AND M,A @OR M,A @XOR M,A @SWAPM M @RRCM M @RLCM M @BSET M.b @BCLR M.b @B0BSET M.b @B0BCLR M.b @INCMS M @DECMS M - DESCRIPTION 1. M = RAM, N = 0. M = system register, N = 1. 2. S8KD-2 ICE： Read OSCM = 1 cycle Write OSCM = 2 cycle SN8P2608： Read OSCM = 1 cycle Write OSCM = 1 cycle 3. PUSH,POP instructions are different between SN8P2608 and S8KD-2 ICE. Version 1.4 SN8P2608 8-Bit Micro-Controller Note: S8KD-2 ICE can’t emulate SN8P2608’s “PUSH, POP” instructions. Note: The instruction macros of above table are built in “SN8P2X_ICE.H”. The file must be included in user program. ¾ Example: Including SN8P2X_ICE.H in user program. CHIP .DATA ICE_MODE SN8P2608 EQU 0 INCLUDESTD SN8P2X_ICE.H ; SN8P2X_ICE.H is a standard macro file and included by “INCLUDESTD”. .CODE User program… … ¾ Example: Instructions are replaced by instruction macro. CHIP .DATA ICE_MODE SN8P2608 EQU 0 INCLUDESTD SN8P2X_ICE.H .CODE User program… ; ; ADD @ADD … AND @AND … BUF1, A BUF1, A ; “ADD M,A” is replaced by “@ADD M,A”. BUF1, A BUF1, A ; “AND M,A” is replaced by “@AND M,A”. SONiX TECHNOLOGY CO., LTD Page 99 Version 1.4 SN8P2608 8-Bit Micro-Controller 11.4.3 SYSTEM CLOCK SONIX 2 series 8-bit MCU has multi-system clock (Fosc/1~Fosc/8,Fosc/64,Fosc/8,), but ICE is fixed Fosc/4. In ICE emulation, user must be sure the Fcpu speeds of SN8P2608 and ICE are identical. Before emulation, change ICE crystal frequency to match with SN8P2608 system clock. ¾ Example: SN8P2608 system clock vs. ICE Table. The SN8P2608 clock source frequency is external 4MHz crystal. SN8P2604 Fcpu Option Fosc/1 Fosc/2 Fosc/4 Fosc/8 Fcpu Frequency 4MHz 2MHz 1MHz 0.5MHz ICE Fcpu Fosc/4 Fosc/4 Fosc/4 Fosc/4 ICE Crystal Frequency 16MHz 8MHz 4MHz 2MHz Note: For different speed crystals, modifying ICE “HIGH CLK” option is necessary. If ICE crystal is 16MHz, set “HIGH CLK” options to “X’TAL 12M”. ¾ Example: SN8P2608 system clock vs. ICE Table. The SN8P2608 clock source frequency is external 16MHz crystal. SN8P2604 Fcpu Option Fosc/1 Fosc/2 Fosc/4 Fosc/8 Fcpu Frequency 16MHz 8MHz 4MHz 2MHz ICE Fcpu Fosc/4 Fosc/4 Fosc/4 Fosc/4 ICE Crystal Frequency 16MHz 8MHz Note: ICE external high clock crystal is up to 16MHz. Fcpu = Fosc/1 and Fosc/2 can’t be emulated. For the applications, users should use SN8P2608 to verify functions. SONiX TECHNOLOGY CO., LTD Page 100 Version 1.4 SN8P2608 8-Bit Micro-Controller 11.4.4 WATCHDOG TIMER Watchdog timer clear routine of SN8P2608 is setting WDTR register 0x5A. S8KD-2 ICE is not. SN8IDE provides “@RST_WDT” macro to make watchdog timer function correctly. ¾ Example: Reset watchdog timer by setting WDTR as 0x5A. CHIP .DATA ICE_MODE SN8P2608 EQU 0 INCLUDESTD SN8P2X_ICE.H .CODE User program… MOV B0MOV A, #5Ah WDTR, A ; Reset watchdog timer. … Note: This way can’t be emulated in S8KD-2 ICE. Using following routine to replace it. ¾ Example: Reset watchdog timer by “@RST_WDT”. CHIP .DATA ICE_MODE SN8P2608 EQU 0 INCLUDESTD SN8P2X_ICE.H .CODE User program… @RST_WDT ; Reset watchdog timer by macro. … SONiX TECHNOLOGY CO., LTD Page 101 Version 1.4 SN8P2608 8-Bit Micro-Controller 11.4.5 P0 EMULATION SN8P2608’s P0 is bi-direction I/O, but ICE’s P0 is input only. PEDGE controls are different, too. SN8IDE provides macros to control P0 emulation. These macros are built in assembler software. 11.4.5.1 @P0n_MODE Syntax: @P0n_MODE Val (n = 0~7) Val: 0 = Set P0.n input mode. 1 = Set P0.n output mode. ¾ Example: Set P0.0 as input mode. @P00_MODE 0 Note: If P0 set as input mode, the input pins are P0.0~P0.7 of S8KD-2 ICE. ¾ Example: Set P0.0 as output mode. @P00_MODE 1 Note: If P0 set as output mode, the output pins are P6.0~P6.7 of S8KD-2 ICE. 11.4.5.2 @P0n_OUT Syntax: @P0n0_OUT Val (n = 0~7) Val: 0 = Set P0.n0 output low. 1 = Set P0.n output high. ¾ Example: Set P0.0 as output high. @P00_OUT 1 Note: Under P0 output mode, the signals are output from P6.0~P6.7 of S8KD-2 ICE. SONiX TECHNOLOGY CO., LTD Page 102 Version 1.4 SN8P2608 8-Bit Micro-Controller 11.4.5.3 PEDGE P00G[1:0] of PEDGE register definition is different from S8KD-2 ICE. ICE emulation and real chip PEDGE function are different. PEDGE P00G1 P00G0 0 0 0 1 1 0 1 1 SN8P2608 S8KD-2 ICE Reserved Rising Edge Falling Edge Bi-Direction Reserved Falling Edge Rising Edge Bi-Direction SONIX provides “@P00_EDGE” macro to emulate real chip PEDGE function in ICE. The ICE_MODE must be 1 for ICE Emulation. After ICE emulation, set ICE_MODE as 0 and compile again to get SN8 file for real chip. Syntax: @P00_EDGE Val Val: 1 = Rising edge. 2 = Falling edge. 3 = Level change (bi-direction). ¾ Example: Set P0.0 interrupt trigger as rising edge and ICE emulation. CHIP .DATA ICE_MODE SN8P2608 EQU 1 INCLUDESTD SN8P2X_ICE.H ; Set ICE mode. .CODE User program… @P00_EDGE B0BSET … ¾ 1 FP00IEN ; Set P0.0 interrupt trigger as rising edge. Example: Set P0.0 interrupt trigger as falling edge and for real chip “SN8”. CHIP .DATA ICE_MODE SN8P2608 EQU 0 INCLUDESTD SN8P2X_ICE.H ; Set real chip mode. .CODE User program… @P00_EDGE B0BSET … 2 FP00IEN SONiX TECHNOLOGY CO., LTD ; Set P0.0 interrupt trigger as falling edge. Page 103 Version 1.4 SN8P2608 8-Bit Micro-Controller 11.4.6 PWM DUTY PWM duty of SN8P2608 is controlled by ALOAD1, TC1OUT bits. PWM1OUT = 1 ALOAD1 TC1OUT TC1R Boundary PWM duty range 0 0 1 1 0 1 0 1 00h to FFh 00h to 3Fh 00h to 1Fh 00h to 0Fh 0/256 ~ 255/256 0/64 ~ 63/64 0/32 ~ 31/32 0/16 ~ 15/16 Max PWM Frequency (Fcpu = 4M) 7.8125K 31.25K 62.5K 125K Note Overflow per 256 count Overflow per 64 count Overflow per 32 count Overflow per 16 count S8KD-2 ICE doesn’t support PWM duty setting function. SONIX provides PWM Duty setting macro. Users can use it to emulate PWM function and don’t affect other functions. The macro is built in assembler software. Users have to set ICE_MODE as ICE or real chip. Syntax: @PWM1_MAX_DUTY Max_Duty 256 64 32 16 ¾ Max_Duty TC1 Overflow Boundary FFh to 00h 3Fh to 40h 1Fh to 20h 0Fh to 10h PWM Duty Range PWM Resolution 0/256 ~ 255/256 0/64 ~ 63/64 0/32 ~ 31/32 0/16 ~ 15/16 8-bit 6-bit 5-bit 4-bit Example: Set PWM Max. Duty = 64,Duty = 2:1. CHIP .DATA ICE_MODE SN8P2608 EQU 0 ; Set real chip mode. INCLUDESTD SN8P2X_ICE.H .CODE User program… @PWM1_MAX_DUTY 64 ; Set PWM1 max. duty as 64. MOV B0MOV B0BSET B0BSET … A,#42 TC1R,A FPWM1OUT FTC1ENB ; 42 = 63 (Max. TC1R) / 3 X 2 SONiX TECHNOLOGY CO., LTD Page 104 Version 1.4 SN8P2608 8-Bit Micro-Controller 11.4.7 OTHER MACRO A macro routine includes many instructions. It will be error after test instruction with skipping function. BTS0 @RST_WDT JMP … BUF.0 TEST_CODE TEST_CODE: … BTS0 instruction skipping function only skip one instruction. @RST_WDT is a macro and composed of several instructions. The skipping function of above routine would be error. It can’t skip to “JMP TEST_CODE” successfully. Using following routines can solve the problem. BTS0 JMP JMP … BUF.0 CLR_WDT TEST_CODE CLR_WDT: @RST_WDT … TEST_CODE: … SN8IDE provides user defined forward/backward jump directive to processing skipping function easier. “Macro_Start” and “Macro_End” is user define label name. Using @@.Macro_Start and @@.Macro_End to syntax. These lable names can be repeated in main program. BTS0 JMP JMP … BUF.0 @F.Macro_Start @F.Macro_End ; Jump to nearest user define @@.Macro_Start: ; Jump to nearest user define @@.Macro_End: @@.Macro_Start: @RST_WDT @@.Macro_End: TEST_CODE: … Note: Only S8ASM V1.99N or later version support user defined forward/backward jump directive! Note: Macro possible affects Accumulator and PFLAG result. Users have to check it! SONiX TECHNOLOGY CO., LTD Page 105 Version 1.4 SN8P2608 8-Bit Micro-Controller 12 OTP PROGRAMMING PIN 12.1.1 The pin assignment of Easy Writer transition board socket: Easy Writer JP1/JP2 VSS 2 CE 4 OE/ShiftDat 6 D0 8 D2 10 D4 12 D6 14 VPP 16 RST 18 ALSB/PDB 20 Easy Writer JP3 (Mapping to 48-pin text tool) 1 VDD 3 CLK/PGCLK 5 PGM/OTPCLK 7 D1 9 D3 11 D5 13 D7 15 VDD 17 HLS 19 - JP1 for MP transition board JP2 for Writer V3.0 transition board DIP1 1 48 DIP48 DIP2 2 47 DIP47 DIP3 3 46 DIP46 DIP4 4 45 DIP45 DIP5 5 44 DIP44 DIP6 6 43 DIP43 DIP7 7 42 DIP42 DIP8 8 41 DIP41 DIP9 9 40 DIP40 DIP10 10 39 DIP39 DIP11 11 38 DIP38 DIP12 12 37 DIP38 DIP13 13 36 DIP36 DIP14 14 35 DIP35 DIP15 15 34 DIP34 DIP16 16 33 DIP33 DIP17 17 32 DIP32 DIP18 18 31 DIP31 DIP19 19 30 DIP30 DIP20 20 29 DIP29 DIP21 21 28 DIP28 DIP22 22 27 DIP27 DIP23 23 26 DIP26 DIP24 24 25 DIP25 JP3 for MP transition board 12.1.2 The pin assignment of Writer V3.0 and V2.5 transition board socket: GND CE OE D0 D2 D4 D6 VPP RST 1 3 5 7 9 11 13 15 17 2 4 6 8 10 12 14 16 18 GND CE OE D0 D2 D4 D6 VPP RST VDD CLK PGM D1 D3 D5 D7 VDD HLS Writer V2.5 JP1 Pin Assignment 2 4 6 8 10 12 14 16 18 20 1 3 5 7 9 11 13 15 17 19 VDD CLK PGM D1 D3 D5 D7 VDD HLS Writer V3.0 JP1 Pin Assignment Note: For supporting the body programming, SONIX writer V2.5 must update V3.0 firmware and modify circuit. Please contact SONIX agent about SONIX Writer V2.5 upgrade. SONiX TECHNOLOGY CO., LTD Page 106 Version 1.4 SN8P2608 8-Bit Micro-Controller 12.1.3 SN8P2608/SN8P2606 Programming Pin Mapping: Programming Information of SN8P2600A Series Chip Name SN8P2606 SN8P2608 EZ Writer / Writer Writer V2.5 OTP IC / JP3 Pin Assigment V3.0 Connector Connector Number Name Number Name Number Pin Number Pin 2 VDD 1 VDD 11,32 VDD 13,39 VDD 1 GND 2 GND 12,31 VSS 14,36 VSS 4 CLK 3 CLK 21 P5.0 25 P5.0 3 CE 4 CE 6 PGM 5 PGM 40 P1.0 1 P1.0 5 OE 6 OE 20 P5.1 24 P5.1 8 D1 7 D1 7 D0 8 D0 10 D3 9 D3 9 D2 10 D2 12 D5 11 D5 11 D4 12 D4 14 D7 13 D7 13 D6 14 D6 16 VDD 15 VDD 15 VPP 16 VPP 1 RST 2 RST 18 HLS 17 HLS 17 RST 18 RST 19 20 ALSB/PDB 2 P1.1 3 P1.1 SONiX TECHNOLOGY CO., LTD Page 107 Version 1.4 SN8P2608 8-Bit Micro-Controller 13 PACKAGE INFORMATION 13.1 SSOP 48 PIN SYMBOLS A A1 A2 b C D E [e] He L L1 Y θ° MIN NOR MAX MIN (inch) 0.095 0.008 0.089 0.008 0.620 0.291 0.396 0.020 0° SONiX TECHNOLOGY CO., LTD 0.102 0.012 0.094 0.010 0.008 0.625 0.295 0.025 0.406 0.030 0.056 - NOR MAX (mm) 0.110 0.016 0.099 0.030 0.630 0.299 0.416 0.040 0.003 8° Page 108 2.413 0.203 2.261 0.203 15.748 7.391 10.058 0.508 0° 2.591 0.305 2.388 0.254 0.203 15.875 7.493 0.635 10.312 0.762 1.422 - 2.794 0.406 2.515 0.762 16.002 7.595 10.566 1.016 0.076 8° Version 1.4 SN8P2608 8-Bit Micro-Controller 13.2 P-DIP 40 PIN SYMBOLS MIN NOR MAX MIN (inch) A A1 A2 D E E1 L 0.015 0.150 2.055 MAX (mm) 0.220 0.160 2.070 0.381 3.810 52.197 0.540 0.115 0.115 2.060 0.600 0.545 0.130 0.550 0.150 ｅB 0.630 0.650 θ° 0° 7° SONiX TECHNOLOGY CO., LTD NOR 5.588 4.064 52.578 13.716 2.921 2.921 52.324 15.240 13.843 3.302 0.067 16.002 16.510 1.702 15° 0° 7° 15° Page 109 13.970 3.810 Version 1.4 SN8P2608 8-Bit Micro-Controller 14 Marking Definition 14.1 INTRODUCTION There are many different types in Sonix 8-bit MCU production line. This note listed the production definition of all 8-bit MCU for order or obtain information. This definition is only for Blank OTP MCU. 14.2 MARKING INDETIFICATION SYSTEM SN8 X PART No. X X X Material B = PB-Free Package G = Green Package Temperature Range - = 0℃ ~ 70℃ Shipping Package Device SONiX TECHNOLOGY CO., LTD D = -40℃ ~ 85℃ W = Wafer H = Dice P = P-DIP X = SSOP 2606 2608 ROM Type P=OTP Title SONiX 8-bit MCU Production Page 110 Version 1.4 SN8P2608 8-Bit Micro-Controller 14.3 MARKING EXAMPLE Name SN8P2608PB SN8P2608XDB ROM Type OTP OTP Device 2608 2608 Package P-DIP SSOP Temperature 0℃~70℃ -40℃~85℃ Material PB-Free Package PB-Free Package 14.4 DATECODE SYSTEM X X X X XXXXX SONiX Internal Use 1=01 2=02 .... 9=09 A=10 B=11 .... Day Month Year SONiX TECHNOLOGY CO., LTD 1=January 2=February .... 9=September A=October B=November C=December 03= 2003 04= 2004 05= 2005 06= 2006 .... Page 111 Version 1.4 SN8P2608 8-Bit Micro-Controller SONIX reserves the right to make change without further notice to any products herein to improve reliability, function or design. SONIX does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. SONIX products are not designed, intended, or authorized for us as components in systems intended, for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SONIX product could create a situation where personal injury or death may occur. Should Buyer purchase or use SONIX products for any such unintended or unauthorized application. Buyer shall indemnify and hold SONIX and its officers , employees, subsidiaries, affiliates and distributors harmless against all claims, cost, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use even if such claim alleges that SONIX was negligent regarding the design or manufacture of the part. Main Office: Address: 9F, NO. 8, Hsien Cheng 5th St, Chupei City, Hsinchu, Taiwan R.O.C. Tel: 886-3-551 0520 Fax: 886-3-551 0523 Taipei Office: Address: 15F-2, NO. 171, Song Ted Road, Taipei, Taiwan R.O.C. Tel: 886-2-2759 1980 Fax: 886-2-2759 8180 Hong Kong Office: Address: Flat 3 9/F Energy Plaza 92 Granville Road, Tsimshatsui East Kowloon. Tel: 852-2723 8086 Fax: 852-2723 9179 Technical Support by Email: [email protected] SONiX TECHNOLOGY CO., LTD Page 112 Version 1.4