MDT2030(CC) 8-bit programmable prescaler 1. General Description This ROM-Based 8-bit micro-controller uses a u Timer(WDT) fully static CMOS technology process to achieve high speed, small size, the low power On-chip RC oscillator based Watchdog u 12 I/O pins with their own independent direction control and high noise immunity. On chip memory includes 2K words EPROM, and 80 bytes static RAM. 3. Applications The application areas of this MDT2030 range 2. Features from appliance motor control and high speed The followings are some of the features on the automotive to low power remote transmitters hardware and software : /receivers, pointing devices, and u Fully CMOS static design telecommunications processors, such as u 8-bit data bus Remote controller, small instruments, u On chip EPROM size : 2.0 K words chargers, toy, automobile and PC u Internal RAM size : 80 bytes peripheral … etc. (73 general purpose registers, 7 special registers) u 36 single word instructions u 14-bit instructions u 2-level stacks u Operating voltage : 2.3 V ~ 6.0 V u Operating frequency : 0 ~ 20 MHz u The most fast execution time is 200 ns under 20 MHz in all single cycle instructions except the branch instruction u Addressing modes include direct, indirect and relative addressing modes 4. Pin Assignment DIP / SOP PA2 1 18 PA3 2 17 RTCC 3 16 /MCLR 4 15 Vss 5 14 PB0 6 13 PB1 7 12 PB2 8 11 PB3 9 10 PA1 PA0 OSC1 OSC2 Vdd PB7 PB6 PB5 PB4 SSOP 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 PA1 PA0 OSC1 OSC2 VDD VDD PB7 PB6 PB5 PB4 u Power-on Reset u Power edge-detector Reset u Sleep Mode for power saving u 4 types of oscillator can be selected by programming option: RC－Low cost RC oscillator LFXT－Low frequency crystal oscillator XTAL－Standard crystal oscillator HFXT－High frequency crystal oscillator u 4 oscillator start-up time can be selected by programming option: 150 µs, 20 ms, 40 ms, 80 ms u PA2 PA3 RTCC /MCLR VSS VSS PB0 PB1 PB2 PB3 8-bit real time clock/counter(RTCC) with This specification are subject to be changed without notice. Any latest information please preview http;//www.mdtic.com.tw P. 1 2005/6 Ver. 1.4 MDT2030(CC) 5. Block Diagram E PR OM S ta ck Tw o Le ve ls P o rt P A0 ~P A3 4 b its RAM 7 3 X8 2 0 4 8 X1 4 P o rt A 1 1 b its 14 b its 1 1 b its P ro g ra m C o u n te rs In s tru ctio n Re g is te r S p e c ia l Re g is te r O SC 2 MCLR OSC 1 P o rt P B0 ~ P B7 8 b its D 0 ~D 7 P o rt B O s cilla to r Circu it In s tru ctio n De co d e r Co n tro l C ircu it Da ta 8 -b it P o we r o n Re s e t P o w e r Do wn R e s e t W o rkin g R e g is te r S ta tu s R e g is te r ALU 8 -b it Tim e r/Co u n te r W DT/O S T Tim e r P re s ca le R TCC This specification are subject to be changed without notice. Any latest information please preview http;//www.mdtic.com.tw P. 2 2005/6 Ver. 1.4 MDT2030(CC) 6. Pin Function Description Pin Name I/O Function Description PA0~PA3 I/O Port A, TTL input level PB0~PB7 I/O Port B, TTL input level RTCC I Real Time Clock/Counter, Schmitt Trigger input levels /MCLR I Master Clear, Schmitt Trigger input levels OSC1 I Oscillator Input OSC2 O Oscillator Output Vdd Power supply Vss Ground 7. Memory Map (A) Register Map Address Description 00 Indirect Addressing Register 01 RTCC 02 PC 03 STATUS 04 MSR 05 Port A 06 Port B 07~1F Internal RAM, Memory bank 0 30~3F Internal RAM, Memory bank 1 50~5F Internal RAM, Memory bank 2 70~7F Internal RAM, memory bank 3 (1) IAR ( Indirect Address Register) : R0 (2) RTCC (Real Time Counter/Counter Register) : R1 This specification are subject to be changed without notice. Any latest information please preview http;//www.mdtic.com.tw P. 2 2005/6 Ver. 1.4 MDT2030(CC) (3) PC (Program Counter) : R2 Write PC, CALL --- always 0 JUMP --- from instruction word RTWI, RET --- from STACK A10 A9 A8 A7~A0 Write PC, JUMP, CALL --- from STATUS b6 b5 RTWI, RET --- from STACK Write PC --- from ALU JUMP, CALL --- from instruction word RTWI, RET --- from STACK (4) STATUS (Status register) : R3 Bit Symbol Function 0 C Carry bit 1 HC Half Carry bit 2 Z Zero bit 3 PF Power loss Flag bit 4 TF WDT Timer overflow Flag bit page ROM page select bit : 6—5 00 : Page 0, 000H --- 1FFH 01 : Page 1, 200H --- 3FFH 10 : Page 2, 400H --- 5FFH 11 : Page 3, 600H --- 7FFH 7 —— General purpose bit This specification are subject to be changed without notice. Any latest information please preview http;//www.mdtic.com.tw P. 3 2005/6 Ver. 1.4 MDT2030(CC) (5) MSR (Memory Bank Select Register) : R4 Memory Bank Select Register : 00 : 10~1F 01 : 30~3F 10 : 50~5F 11 : 70~7F b7 b6 b5 b4 b3 b2 b1 b0 Read only “1” Indirect Addressing Mode (6) PORT A : R5 PA3~PA0, I/O Register (7) PORT B : R6 PB7~PB0, I/O Register (8) TMR (Time Mode Register) Bit Symbol Function Prescaler Value 2—0 PS2—0 3 PSC 4 TCE 5 TCS RTCC rate WDT rate 0 0 0 1:2 1:1 0 0 1 1:4 1:2 0 1 0 1:8 1:4 0 1 1 1 : 16 1:8 1 0 0 1 : 32 1 : 16 1 0 1 1 : 64 1 : 32 1 1 0 1 : 128 1 : 64 1 1 1 1 : 256 1 : 128 Prescaler assignment bit : 0 — RTCC 1 — Watchdog Timer RTCC signal Edge : 0 — Increment on low-to-high transition on RTCC pin 1 — Increment on high-to-low transition on RTCC pin RTCC signal set : 0 — Internal instruction cycle clock 1 — Transition on RTCC pin (9) CPIO A, CPIO B (Control Port I/O Mode Register) The CPIO register is “write-only” ＝“0”, I/O pin in output mode; ＝“1”, I/O pin in input mode. This specification are subject to be changed without notice. Any latest information please preview http;//www.mdtic.com.tw P. 4 2005/6 Ver. 1.4 MDT2030(CC) (10) Configurable options for EPROM (Set by writer) : Oscillator Type RC Oscillator Start-up Time 150 µs,20ms,40ms,80ms Oscillator HFXT Oscillator 20 ms,40ms,80ms XTAL Oscillator 20ms,40 ms,80ms LFXT Oscillator 40 ms,80 ms Watchdog Timer control Watchdog timer disable all the time Watchdog timer enable all the time Power Edge Detect Security state PED Disable Security weak Disable PED Enable Security Disable Security Enable The default security state of EPROM is weak disable. Once the IC was set to enable or disable, it’s forbidden to change. (B) Program Memory Address Description 000-7FF Program memory 7FF The starting address of power on, external reset or WDT time-out reset. 8. Reset Condition for all Registers Register Address Power-On Reset /MCLR or WDT Reset CPIO A －－ 1111 1111 1111 1111 CPIO B －－ 1111 1111 1111 1111 TMR －－ --11 1111 --11 1111 IAR 00h － － RTCC 01h xxxx xxxx uuuu uuuu PC 02h 1111 1111 1111 1111 STATUS 03h 0001 1xxx 000# #uuu MSR 04h 100x xxxx 100u uuuu This specification are subject to be changed without notice. Any latest information please preview http;//www.mdtic.com.tw P. 5 2005/6 Ver. 1.4 MDT2030(CC) Register Address Power-On Reset /MCLR or WDT Reset PORT A 05h - - - - xxxx - - - - uuuu PORT B 06h xxxx xxxx uuuu uuuu Note : u＝unchanged, x＝unknown, - ＝unimplemented, read as “0” #＝value depends on the condition of the following table Condition Status: bit 4 Status: bit 3 /MCLR reset (not during SLEEP) u u /MCLR reset during SLEEP 1 0 WDT reset (not during SLEEP) 0 1 WDT reset during SLEEP 0 0 9. Instruction Set : Instruction Code Mnemonic Operands Function Operating Status 010000 00000000 NOP No operation None 010000 00000001 CLRWT Clear Watchdog timer 0→WT TF, PF 010000 00000010 SLEEP Sleep mode 0→WT, stop OSC TF, PF 010000 00000011 TMODE Load W to TMODE register W→TMODE None 010000 00000100 RET Return Stack→PC None 010000 00000rrr CPIO R Control I/O port register W→CPIO r None 010001 1rrrrrrr STWR R Store W to register W→R None 011000 trrrrrrr LDR R, t Load register R→t Z 111010 iiiiiiii LDWI I Load immediate to W I→W None 010111 trrrrrrr SWAPR R, t Swap halves register [R(0~3) ↔R(4~7)] →t None 011001 trrrrrrr INCR R, t Increment register R + 1→t Z 011010 trrrrrrr INCRSZ R, t Increment register, skip if zero R + 1→t None 011011 trrrrrrr ADDWR R, t Add W and register W + R→t C, HC, Z 011100 trrrrrrr SUBWR R, t Subtract W from register R ﹣W→t or (R+/W+1→t) C, HC, Z 011101 trrrrrrr DECR R, t Decrement register R ﹣1→t Z 011110 trrrrrrr DECRSZ R, t Decrement register, skip if zero R ﹣1→t None 010010 trrrrrrr ANDWR R, t AND W and register R ∩ W→t Z 110100 iiiiiiii ANDWI i AND W and immediate i ∩ W→W Z 010011 trrrrrrr IORWR R, t Inclu. OR W and register R ∪ W→t Z 110101 iiiiiiii IORWI i Inclu. OR W and immediate i ∪ W→W Z This specification are subject to be changed without notice. Any latest information please preview http;//www.mdtic.com.tw P. 6 2005/6 Ver. 1.4 MDT2030(CC) Instruction Code Mnemonic Operands Function Operating Status 010100 trrrrrrr XORWR R, t Exclu. OR W and register R ♁ W→t Z 110110 iiiiiiii XORWI i Exclu. OR W and immediate i ♁ W→W Z 011111 trrrrrrr COMR R, t Complement register /R→t Z 010110 trrrrrrr RRR Rotate right register R(n) →R(n-1), C R, t C→R(7), R(0)→C 010101 trrrrrrr RLR R, t Rotate left register R(n)→r(n+1), C C→R(0), R(7)→C 010000 1xxxxxxx CLRW Clear working register 0→W Z 010001 0rrrrrrr CLRR Clear register 0→R Z 0000bb brrrrrrr BCR R, b Bit clear 0→R(b) None 0010bb brrrrrrr BSR R, b Bit set 1→R(b) None 0001bb brrrrrrr BTSC R, b Bit Test, skip if clear Skip if R(b)=0 None 0011bb brrrrrrr BTSS R, b Bit Test, skip if set Skip if R(b)=1 None 1000nn nnnnnnnn LCALL n Long CALL subroutine n→PC, None R PC+1→Stack 1010nn nnnnnnnn LJUMP n Long JUMP to address n→PC None 110000 nnnnnnnn CALL Call subroutine n→PC, None n PC+1→Stack 110001 iiiiiiii RTWI 11001n nnnnnnnn JUMP i n Return, place immediate to W Stack→PC,i→W None JUMP to address n→PC None Note : W WT TMODE CPIO TF PF PC OSC Inclu. Exclu. AND : : : : : : : : : : : Working register Watchdog timer TMODE mode register Control I/O port register Timer overflow flag Power loss flag Program Counter Oscillator Inclusive ‘∪’ Exclusive ‘♁’ Logic AND ‘∩’ b t R C HC Z / x i n : : 0 1 : : : : : : : : Bit position Target : Working register : General register General register address Carry flag Half carry Zero flag Complement Don’t care Immediate data ( 8 bits ) Immediate address This specification are subject to be changed without notice. Any latest information please preview http;//www.mdtic.com.tw P. 7 2005/6 Ver. 1.4 MDT2030(CC) 10. Electrical Characteristics (Operating temperature at 25℃). Sym Description Condition Vdd Operating voltage Min Typ Max Uni t 2.3 6.0 V VIL Input Low Voltage PA, PB RTCC, /MCLR Vdd=5V Vdd=5V -0.6 -0.6 1.0 1.0 V V VIH Input high Voltage PA, PB RTCC, /MCLR Vdd=5V Vdd=5V 2.0 3.3 Vdd Vdd V V +/-1 µA IIL Input leakage current VOL Output Low Voltage PA, PB VOH Output High Voltage PA, PB Islp Sleep current (WDT disable) Islp Sleep current (WDT enable) Vdd=5V Vdd=5V, IOL=20mA Vdd=5V, IOL=5mA 0.5 0.1 V V Vdd=5V, IOH= -20mA Vdd=5V, IOH= -5mA Vdd＝2.3 ~ 6.0 V 3.8 4.5 V V µA Vdd＝2.3 V Vdd＝3.0 V Vdd＝4.0 V Vdd＝5.0 V Vdd＝6.0 V 1 3 6 11 17 Vpr Power Edge-detector Reset Voltage 0.1 1.0 µA µA µA µA µA 1.1 1.3 V Twdt The basic WDT time-out cycle time Vdd＝2.3 V Vdd＝3.0 V Vdd＝4.0 V Vdd＝5.0 V Vdd＝6.0 V 25.2 22.4 20.4 18.8 18.0 mS mS mS mS mS TFLT /MCLR filter Vdd＝5.0 V 600 nS 15 µA Icc Comparator Supply current (one Vdd=5.0v comparator) Vref Input reference voltage Vdd=2.5v ~6.0 V Vdd-0.8 V v This specification are subject to be changed without notice. Any latest information please preview http;//www.mdtic.com.tw P. 8 2005/6 Ver. 1.4 MDT2030(CC) Sym --- Description Comparator Response time V-=Vdd/4, V+=V- ± 0.2v V-=Vdd/2, V+=V- ± 0.2v V-=Vdd3/4, V+=V- ± 0.2v V-=VDD-0.8,V+=V± 0.2v Condition Min Vdd=5.0v , V- = Vref V+ = (PA0~PA3) Typ Max Uni t µS µS µS µS 8 8 8 8 11. Operating Current Temperature＝25 ℃, the typical value as followings : 11.1 OSC Type＝RC (OSC1&OSC2 Internal Cap about 10P); WDT－Enable; Comparator － Disable ; PED=Disable Vdd＝5.0 V Cext. (F) 0P 3P 20P Rext. (Ohm) Frequency (Hz) Current (A) 4.7 K 7.76M 980 µA 10.0 K 3.82M 560 µA 47.0 K 848K 240 µA 100.0 K 404K 185 µA 300.0 K 135.6K 155 µA 470.0 K 86K 150 µA 4.7 K 6.8M 880 µA 10.0 K 3.34M 510 µA 47.0 K 740K 230 µA 100.0 K 356K 185 µA 300.0 K 119K 155 µA 470.0 K 75.2K 150 µA 4.7 K 4.16M 610 µA 10.0 K 2.04M 380 µA 47.0 K 452K 200 µA 100.0 K 214.8K 175 µA 300.0 K 75.2K 155 µA 470.0 K 45.6K 151 µA This specification are subject to be changed without notice. Any latest information please preview http;//www.mdtic.com.tw P. 9 2005/6 Ver. 1.4 MDT2030(CC) Cext. (F) 100P 300P Rext. (Ohm) Frequency (Hz) Current (A) 4.7 K 1.57M 335 µA 10.0 K 764K 245 µA 47.0 K 167.2K 175 µA 100.0 K 76.8K 165 µA 300.0 K 26.6K 160 µA 470.0 K 16.8K 155 µA 4.7 K 672K 235 µA 10.0 K 321.6K 195 µA 47.0 K 70.4K 165 µA 100.0 K 33.2K 160 µA 300.0 K 11.1K 158 µA 470.0 K 7.04K 156 µA 11.2 OSC Type＝LF (OSC1&OSC2 Internal Cap about 10P); WDT－Enable ; Comparator － Disable﹔PED=Disable Voltage/Frequency 32 K 455 K 1M Sleep 2.3 V 7.0µA 25µA 40µA ＜1.0 µA 3.0 V 15.0µA 45µA 65µA 3 µA 4.0 V 35.0µA 85µA 115µA 6 µA 5.0 V 70.0µA 140µA 180µA 11 µA 6.0 V 130µA 215µA 260µA 17 µA 11.3 OSC Type＝XT (OSC1&OSC2 Internal Cap about 10P); WDT－Enable ; Comparator － Disable ﹔PED=Enable Voltage/Frequency 1M 4M 10 M Sleep 2.1 V 50µA 120µA 290µA ＜1.0 µA 3.0 V 100µA 230µA 490µA 3 µA 4.0 V 210µA 400µA 650µA 6 µA 5.0 V 375µA 590µA 1.3mA 11 µA 6.0 V 645µA 850µA 1.6mA 17 µA 11.4 OSC Type＝HF (OSC1&OSC2 Internal Cap about 10P); WDT－Enable ; Comparator － Disable﹔PED=Enable This specification are subject to be changed without notice. Any latest information please preview http;//www.mdtic.com.tw P. 10 2005/6 Ver. 1.4 MDT2030(CC) Voltage/Frequency 4M 10 M 20 M Sleep 2.1 V 150µA 320µA X ＜1.0 µA 3.0 V 280µA 550µA 925µA 3 µA 4.0 V 510µA 910µA 1.5mA 6 µA 5.0 V 800µA 1.4mA 2.3mA 11 µA 6.0 V 1.3mA 1.9mA 3.2mA 17 µA 11.5 Power Edge-detector Reset Voltage (Not in Sleep Mode), @ V dd＝5.0 V Vpr≦1.8~2.2 V Vpr ﹕Vdd (Power Supply) This specification are subject to be changed without notice. Any latest information please preview http;//www.mdtic.com.tw P. 11 2005/6 Ver. 1.4 MDT2030(CC) 12. Port A and Port B Equivalent Circuit D Q I/O Control C Latch Q K B I/O Control Port I/O Pin D Data O/P Latch Write G Q B Data Bus Read D QB Data I/P Latch G TTL Input Level Inpu t Resistor This specification are subject to be changed without notice. Any latest information please preview http;//www.mdtic.com.tw P. 12 2005/6 Ver. 1.4 MDT2030(CC) 13. MCLRB and RTCC Input Equivalent Circuit MCLRB R≒1K Schmitt Trigger R≒1K RTCC Schmitt Trigger This specification are subject to be changed without notice. Any latest information please preview http;//www.mdtic.com.tw P. 13 2005/6 Ver. 1.4 MDT2030(CC) 14. External Capacitor Selection For Crystal Oscillator @ Vdd＝5.0 V Osc. Type Resonator Freq. Capacity Range 20 MHz 10 pF ~ 50 pF 10 MHz 20 pF ~ 50 pF 4 MHz 10 pF ~ 30 pF 10 MHz 10 pF ~ 50 pF 4 MHz 10 pF ~ 50 pF 1 MHz 20 pF ~50 pF 1 MHz 20 pF ~ 30 pF 455 K 20 pF ~30 pF 32 K 20 pF ~30 pF HF XT LF MDT2030 OSC1 C1 OSC2 C2 To increase the stability of oscillator and the ability of anti-noise, the above values of the external capacitor are for reference only, but the higher capacitance also increases the start-up time. This specification are subject to be changed without notice. Any latest information please preview http;//www.mdtic.com.tw P. 14 2005/6 Ver. 1.4