MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER DESCRIPTION ● System clock switch function ............................................................. f(XIN)/4 or not divided ● Timers Timer 1... 10-bit timer with a reload register and carrier wave output auto-control function Timer 2 ................................ 8-bit timer with a reload register Timer 3... 8-bit timer with two reload registers and carrier wave generation function ● Interrupt ................................................................... 4 sources ● Power-on reset circuit ● Watchdog timer ............................................................ 16 bits ● Key-on wakeup function (Ports P0, P1, and P4, ON/OFF of port P4 can be switched) ●Pull-up transistor .............. (Ports P0, P1, and P4, ON/OFF of port P4 can be switched) ● Voltage drop detection circuit ● Clock generating circuit (ceramic resonance) The 4570 Group is a 4-bit single-chip microcomputer designed with CMOS technology. Its CPU is that of the 4500 series using a simple, high-speed instruction set. The computer is equipped with a carrier wave output circuit for remote control, an 8-bit timer with a reload register, a 10-bit timer with a reload register, and an 8-bit timer with two reload registers. The various microcomputers in the 4570 Group include variations of the built-in memory size. The mask ROM version and One Time PROM version of 4570 Group are produced as shown in the table below. FEATURES ● Minimum instruction execution time When f(XIN) is selected for system clock ....................... 1.5µs (f(XIN)=2.0 MHz, VDD=4.5 V to 5.5 V) When f(XIN)/4 is selected for system clock ................. 2.86µs (f(XIN)=4.2 MHz, VDD=2.0 V to 5.5 V) ● Supply voltage ............................. 2.5 V to 5.5 V (One Time PROM version) ....................................... 2.0 V to 5.5 V (Mask ROM version) ROM (PROM) size Product (✕ 10 bits) M34570M4-XXXFP 4096 words 8192 words M34570M8-XXXFP M34570MD-XXXFP 16384 words 8192 words M34570E8FP 16384 words M34570EDFP * *: Under development (Jan. 1999) APPLICATION Remote control transmitter RAM size (✕ 4 bits) 128 words 128 words 128 words 128 words 128 words Package ROM type 36P2R-A 36P2R-A Mask ROM Mask ROM 36P2R-A Mask ROM 36P2R-A 36P2R-A One Time PROM One Time PROM PIN CONFIGURATION (TOP VIEW) M34570Mx-XXXFP 1 36 D1 D3 2 35 D4 D5 D6 3 34 33 32 D8 4 5 6 7 D0 P13 P12 D9/TOUT 8 D7 P20 9 P21/INT 10 11 RESET CNV SS 28 27 26 25 P11 P10 P03 P02 P01 P00 P43 P42 P41 23 P40 17 22 21 20 P33 P32 P31 18 19 P30 13 XIN 14 15 VDCE VDD CARR 31 30 29 24 12 XOUT VSS M34570Mx-XXXFP D2 16 Outline 36P2R-A 2 Port P0 Port P1 4 Port P2 2 Watchdog timer (16 bits) 128 words ✕ 4 bits RAM 4096 to 16384 words ✕ 10 bits ROM (Note) Note: PROM 16384 words ✕ 10 bits for the built-in PROM version. Register B (4 bits) Register A (4 bits) Register E (8 bits) Register D (3 bits) Stack registers SKs (8 levels) Interrupt stack register SDP(1 level) ALU(4 bits) 4500 Series CPU core Reset (Voltage drop detection circuit) Timer 3 (8 bits) (Carrier wave generation) Memory XIN –XOUT Port D 10 Timer 1 (10 bits) Timer 2 (8 bits) Port P4 4 Clock generating circuit Port P3 4 Timers/Carrier wave generation Internal peripheral functions I/O port 4 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER BLOCK DIAGRAM MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER PERFORMANCE OVERVIEW Parameter Function Number of basic instructions 99 Minimum instruction execution time 1.5 µs (f(XIN) = 2.0 MHz:system clock = f(XIN): VDD = 5.0 V) 2.86 µs (f(XIN) = 4.2 MHz:system clock = f(XIN)/4: VDD = 5.0 V) Memory sizes ROM RAM M34570M4 4096 words ✕ 10 bits M34570M8 8192 words ✕ 10 bits M34570MD 16384 words ✕ 10 bits M34570E8 8192 words ✕ 10 bits M34570ED 16384 words ✕ 10 bits 128 words ✕ 4 bits Input/Output D0–D9 ports P00–P03 P10–P13 I/O P20, P21 Input P30–P33 I/O Output I/O P40–P43 Input Output CARR Output TOUT INT Timers Input Ten independent output ports; port D9 is also used as the TOUT output pin. 4-bit I/O port; every pin of the ports has a key-on wakeup function and a pull-up function. 4-bit I/O port; every pin of the ports has a key-on wakeup function and a pull-up function. 2-bit input port, port P21 is also used as INT input pin. 4-bit I/O port 4-bit input port; both pull-up function and key-on wakeup function can be switched by software. 1-bit output port (CMOS output) 1-bit output pin; TOUT output pin is also used as port D9. 1-bit input pin with a key-on wakeup function. INT input pin is also used as port P21. Timer 1 10-bit timer with a reload register and carrier wave output auto-control function Timer 2 Timer 3 8-bit timer with a reload register 8-bit timer with two reload registers and carrier wave generation function Interrupt Sources Nesting Subroutine nesting 4 (one for external and three for timer) 1 level 8 levels (however, only 7 levels can be used when an interrupt is used or the TABP p instruction Device structure is executed) CMOS silicon gate Package 36-pin plastic molded SSOP Operating temperature range Supply voltage –20 °C to 70 °C 2.0 V to 5.5 V for mask ROM version (2.5 V to 5.5 V for One Time PROM version) Power 1.3 mA (f(XIN) = 4.2 MHz: system clock = f(XIN)/4, VDD=5.0 V) at active dissipation (typical value) at RAM back-up 0.5 mA (f(XIN) = 1.0 MHz: system clock = f(XIN), VDD=3.0 V) 0.1 µA (Ta=25 °C, VDD=5V, typical value) DEFINITION OF CLOCK AND CYCLE ● System clock The system clock is the basic clock for controlling this product. The system clock can be selected by bit 3 of the clock control register MR as shown in the table below. Table Selection of system clock System clock MR3 f(XIN) 0 f(XIN)/4 1 Note: f(XIN)/4 is selected immediately after system is released from reset. ● Instruction clock The instruction clock is the standard clock for controlling CPU. The instruction clock is a signal derived from dividing the system clock by 3. The one cycle of the instruction clock is equivalent to the one machine cycle. ● Machine cycle The machine cycle is the standard cycle required to execute the instruction. 3 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER PIN DESCRIPTION VDD Pin Name Power supply VSS Ground CNVSS CNVSS Reset input RESET Input/Output Function — Connected to a plus power supply. — Connected to a 0 V power supply. Input I/O Connect CNVSS to VSS and apply “L” (0V) to CNVSS certainly. An N-channel open-drain I/O pin for a system reset. A pull-up transistor and a capacitor are built-in this pin. When the watchdog timer causes the system to be reset or the low-supply voltage is detected, the RESET pin outputs “L” level. XIN Clock input Input I/O pins of the clock generating circuit. Connect a ceramic resonator between XIN XOUT Clock output Output D0–D9 Output port D Output pin and XOUT pin. A feedback resistor is built-in between them. Each pin of port D has an independent 1-bit wide output function. Port D9 is also P00–P03 I/O port P0 I/O P10–P13 I/O port P1 I/O P20, P21 Input port P2 I/O P30–P33 I/O port P3 I/O P40–P43 Input port P4 CARR Carrier wave output used as TOUT output pin. The output structure is N-channel open-drain. 4-bit I/O port. It can be used as an input port when the output latch is set to “1.” The output structure is N-channel open-drain. Every pin of the ports has a key-on wakeup function and a pull-up function. 4-bit I/O port. It can be used as an input port when the output latch is set to “1.” The output structure is N-channel open-drain. Every pin of the ports has a key-on wakeup function and a pull-up function. 2-bit input port. Port P21 is also used as the INT input pin. 4-bit I/O port. It can be used as an input port when the output latch is set to “1.” The output structure is N-channel open-drain. Input 4-bit input port. Every pin of the ports has a key-on wakeup function and a pull-up function. Both functions can be switched by software. Output Carrier wave output pin for remote control transmit. The output structure is the CMOS circuit. for remote control INT Interrupt input Input INT input pin accepts an external interrupt and has a key-on wakeup function. INT TOUT Timer output Output input pin is also used as port P21. TOUT output pin has the function to output the timer 2 underflow signal divided by VDCE Voltage drop Input 2. TOUT output pin is also used as port D9. 4 detection circuit VDCE pin is used to control the operation/stop of the voltage drop detection circuit. The circuit is operating when “H” level is input to the VDCE pin. It is stopped when enable “L” level is input to this pin. MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER MULTIFUNCTION Pin Multifunction D9 TOUT Pin TOUT Multifunction D9 P21 INT INT Notes 1: Pins except above have just single function. 2: The port D9 is the output port and port P21 is the input port. P21 CONNECTIONS OF UNUSED PINS Connection Pin D0–D8 D9/TOUT P00–P03 P10–P13 Connection Pin Connect to VSS, or set the output latch to P30–P33 “0” and open. Set the output latch to “1” and open. P40–P43 Connect to VSS, or set the output latch to “0” and open. Connect to VSS (Note 2) or open (Note 3). Open. CARR P20, P21/INT Connect to VSS (Note 1). Notes 1: When the P21/INT pin is connected to VSS pin, set the return level to “H” level by software (interrupt control register I12=“1”). When the P21/INT pin is connected to VSS pin while the return level is set to “L” level, system returns from RAM back-up state immediately after system enters the RAM back-up state. 2: In order to connect ports P40–P43 to VSS, turn off their pull-up transistors (pull-up control register PU0i=“0”) by software and also invalidate the key-on wakeup functions (key-on wakeup control register K0i=“0”). When these pins are connected to VSS while the key-on wakeup functions are left valid, the system fails to return from RAM back-up state. In order to make these pins open, turn on their pull-up transistors (register PU0i=“1”) by software (i = 0, 1, 2, 3). Be sure to select the key-on wakeup function and the pull-up function with every one port. 3: In order to make ports P40–P43 open, turn on their pull-up transistors (register PU0i = “1”) by software (i = 0, 1, 2, 3). (Note in order to set the output latch to “0” or “1” or make pins open) • After system is released from reset, a port is in a high-impedance state until the output latch of the port is set to “0” by software. Accordingly, the voltage level of pins is undefined and the excess of the supply current may occur. • To set the output latch periodically is recommended because the value of output latch may change by noise or a program run away (caused by noise). (Note in order to connect unused pins to VSS) • To avoid noise, connect the unused pins to VSS at the shortest distance using a thick wire. PORT FUNCTION Port Port D Pin D0–D8, D9/TOUT Input/ Output Output structure Output N-channel open-drain Control Control Control bits instructions registers 1 (10) SD RD W22 Remark W22 controls the switch of D9/ TOUT pin CLD Port P0 Port P1 P00–P03 I/O N-channel open-drain 4 OP0A IAP0 P10–P13 (4) I/O N-channel open-drain 4 OP1A 2 IAP1 IAP2 (4) Port P2 P20 Port P3 P21/INT P30–P33 Input (2) I/O Pull-up functions Key-on wakeup functions Pull-up functions Key-on wakeup functions SNZI0 N-channel open-drain 4 Key-on wakeup function (Note) OP3A IAP3 Port P4 P40–P43 Input 4 IAP4 (4) PU0 K0 Pull-up functions (programmable) Key-on wakeup functions (programmable) Note: Level of the P21/INT pin can be examined with the SNZI0 instruction. 5 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER PORT BLOCK DIAGRAMS Pull-up transistor Key-on wakeup input (Note 1) IAP0 instruction P00–P0 3 Register A IAP2 instruction (Note 2) Ai D Q OP0A instruction Register A T P20 Key-on wakeup input External interrupt circuit Pull-up transistor Key-on wakeup input (Note 1) IAP2 instruction (Note 1) Register A P21/INT IAP1 instruction P10–P1 3 Register A (Note 2) (Note 1) Ai D Q OP1A instruction T IAP3 instruction K00 Key-on wakeup input Pull-up transistor P30–P3 3 Register A (Note 1) (Note 2) PU00 Ai D Q OP3A instruction IAP4 instruction Register A T (Note 1) P40 Decoder Register Y K01 Key-on wakeup input CLD instruction Pull-up transistor (Note 1) S D0–D8 SD instruction PU01 R Q RD instruction IAP4 instruction Register A P41 (Note 1) Register Y Decoder CLD instruction K02 Key-on wakeup input Pull-up transistor (Note 1) PU02 Register A Timer 2 underflow signal output 1/2 Key-on wakeup input Pull-up transistor (Note 1) D9/TOUT 0 1 (Note 1) P42 K03 Notes 1. This symbol represents a parasitic diode. Applied potential to ports P2 0 and P2 1 must be V DD or less. PU03 2. i represents 0, 1, 2 or 3. IAP4 instruction 6 W22 R Q RD instruction IAP4 instruction Register A S SD instruction P43 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER PORT BLOCK DIAGRAMS (continued) Register B Register A To timer 1 (T3HAB) CARRY Reload register R3H (8) C21 W3 1,W3 0 Timer 2 underflow signal ORCLK MR3 XIN 1/2 00 W33 01 0 10 1 0 11 1 Not available (Note) Reload control circuit Port CARR Q T Timer 3(8) R W33 (T3AB) Reload register R3L (8) (T3AB) (TAB3) Register B Register A T3F (TAB3) Timer 1 underflow signal Timer 3 interrupt Q T R C20 W10 Note : This symbol represents a parasitic diode. 7 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER FUNCTION BLOCK OPERATIONS CPU <Carry> (CY) (1) Arithmetic logic unit (ALU) The arithmetic logic unit ALU performs 4-bit arithmetic such as 4-bit data addition, comparison, AND operation, OR operation, and bit manipulation. (2) Register A and carry flag (CY) Register A is a 4-bit register used for arithmetic, transfer, exchange, and I/O operation. Carry flag CY is a 1-bit flag that is set to “1” when there is a carry with the AMC instruction (Figure 1). It is unchanged with both A n instruction and AM instruction. The value of A0 is stored in carry flag CY with the RAR instruction (Figure 2). Carry flag CY can be set to “1” with the SC instruction and cleared to “0” with the RC instruction. (3) Registers B and E Register B is a 4-bit register used for temporary storage of 4bit data, and for 8-bit data transfer together with register A. Register E is an 8-bit register. It can be used for 8-bit data transfer with register B used as the high-order 4 bits and register A as the low-order 4 bits (Figure 3). (M(DP)) Addition ALU (A) <Result> Fig. 1 AMC instruction execution example <Set> SC instruction <Clear> RC instruction CY A3 A2 A1 A0 <Rotation> RAR instruction A0 CY A3 A2 A1 Fig. 2 RAR instruction execution example (4) Register D Register D is a 3-bit register. It is used to store a 7-bit ROM address together with register A and is used as a pointer within the specified page when the TABP p, BLA p, or BMLA p instruction is executed (Figure 4). Register B TAB instruction Register A B3 B2 B1 B0 A3 A2 A1 A0 TEAB instruction Register E E7 E6 E5 E4 E3 E2 E1 E0 TABE instruction B3 B2 B1 B0 Register B A3 A2 A1 A0 Register A TBA instruction Fig. 3 Registers A, B and register E ROM TABP p instruction Specifying address p6 p5 PCH p4 p3 p2 p1 p0 PCL DR2 DR1 DR0 A3 A2 A1 A0 8 4 0 Low-order 4 bits Register A (4) Middle-order 4 bits Register B (4) Immediate field value p The contents of The contents of register D register A High-order 2 bits Register W5 (2) Fig. 4 TABP p instruction execution example 8 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER (6) Interrupt stack register (SDP) Interrupt stack register (SDP) is a 1-stage register. When an interrupt occurs, this register (SDP) is used to temporarily store the contents of data pointer, carry flag, skip flag, register A, and register B just before an interrupt until returning to the original routine. Unlike the stack registers (SKs), this register (SDP) is not used when executing the subroutine call instruction and the table reference instruction. Program counter (PC) Executing the subroutine Executing the return or call or table reference table reference instruction instruction SK0 (SP) = 0 SK1 (SP) = 1 SK2 (SP) = 2 SK3 (SP) = 3 SK4 (SP) = 4 SK5 (SP) = 5 SK6 (SP) = 6 SK7 (SP) = 7 Stack pointer (SP) points “7” at reset or returning from RAM back-up mode. It points “0” by executing the first BM instruction, and the contents of program counter is stored in SK0. When the BM instruction is executed after eight stack registers are used ((SP) = 7), (SP) = 0 and the contents of SK0 is destroyed. Fig. 5 Stack registers (SKs) structure (SP) (SK0) (PC) ➝ ➝ ➝ (5) Stack registers (SKS) and stack pointer (SP) Stack registers (SKs) are used to temporarily store the contents of program counter (PC) just before branching until returning to the original routine when; • branching to an interrupt service routine (referred to as an interrupt service routine), • performing a subroutine call, or • executing the table reference instruction (TABP p). Stack registers (SKs) are eight identical registers, so that subroutines can be nested up to 8 levels. However, one of stack registers is used when using an interrupt service routine or when executing a table reference instruction. Accordingly, be careful not to stack over when performing these operations together. The contents of registers SKs are destroyed when 8 levels are exceeded. The register SK nesting level is pointed automatically by 3bit stack pointer (SP). The contents of the stack pointer (SP) can be transferred to register A with the TASP instruction. Figure 5 shows the stack registers (SKs) structure. Figure 6 shows the example of operation at subroutine call. 0 000116 SUB1 Main program Subroutine Address SUB1 : 0000 16 NOP NOP · · · RT 0001 16 BM SUB1 0002 16 NOP (PC) (SP) ➝ ➝ (7) Skip flag Skip flag controls skip decision for the conditional skip instructions and continuous described skip instructions. When an interrupt occurs, the contents of skip flag is stored automatically in the interrupt stack register (SDP) and the skip condition is retained. (SK 0) 7 Note: Returning to the BM instruction execution address with the RT instruction, and the BM instruction is equivalent to the NOP instruction. Fig. 6 Example of operation at subroutine call 9 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER (8) Program counter (PC) Program counter (PC) is used to specify a ROM address (page and address). It determines a sequence in which instructions stored in ROM are read. It is a binary counter that increments the number of instruction bytes each time an instruction is executed. However, the value changes to a specified address when branch instructions, subroutine call instructions, return instructions, or the table reference instruction (TABP p) is executed. Program counter consists of PCH (most significant bit to bit 7) which specifies to a ROM page and PCL (bits 6 to 0) which specifies an address within a page. After it reaches the last address (address 127) of a page, it specifies address 0 of the next page (Figure 7). Make sure that the PCH does not specify after the last page of the built-in ROM. Program counter (PC) p6 p5 p4 p 3 p 2 p1 p0 a6 a5 a4 a3 a2 a1 a0 PCH Specifying page PCL Specifying address Fig. 7 Program counter (PC) structure Data pointer (DP) Z1 Z0 X3 X2 X1 X0 Y3 Y2 Y1 Y0 (9) Data pointer (DP) Data pointer (DP) is used to specify a RAM address and consists of registers Z, X, and Y. Register Z specifies a RAM file group, register X specifies a file, and register Y specifies a RAM digit (Figure 8). Register Y is also used to specify the port D bit position. When using port D, set the port D bit position to register Y certainly and execute the SD or RD instruction (Figure 9). Specifying RAM digit Register Y (4) Register X (4) Register Z (2) Specifying RAM file Specifying RAM file group Fig. 8 Data pointer (DP) structure Specifying bit position Set D9 0 1 0 D6 1 Register Y (4) D4 1 Port D output latch Fig. 9 SD instruction execution example 10 D5 D0 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER PROGRAM MEMORY (ROM) 1 word of ROM is composed of 10 bits. ROM is separated every 128 words by the unit of page (addresses 0 to 127). Table 1 shows the ROM size and pages. Figure 10 shows the ROM map of M34570M8. Table 1 ROM size and pages Product M34570M4 M34570M8 M34570E8 M34570MD ROM size (✕ 10 bits) 4096 words 8192 words 8192 words 16384 words Pages 9 8 0000 16 007F16 0080 16 00FF16 0100 16 017F16 0180 16 7 6 5 4 3 2 1 0 Page 0 Interrupt address page Page 1 Subroutine special page Page 2 Page 3 32 (0 to 31) 64 (0 to 63) 64 (0 to 63) 0FFF16 Page 31 1FFF16 Page 127 128 (0 to 127) 16384 words M34570ED 128 (0 to 127) Note: When the TABP instruction is executed after executing the SBK instruction, data in pages 64 to 127 can be referred. When the TABP instruction is executed after executing the RBK instruction, data in pages 0 to 63 can be referred. A top part of page 1 (addresses 008016 to 00FF16) is reserved for interrupt addresses (Figure 11). When an interrupt occurs, the address (interrupt address) corresponding to each interrupt is set in the program counter, and the instruction at the interrupt address is executed. When using an interrupt service routine, write the instruction generating the branch to that routine at an interrupt address. Page 2 (addresses 010016 to 017F 16) is the special page for subroutine calls. Subroutines written in this page can be called from any page with the 1-word instruction (BM). Subroutines extending from page 2 to another page can also be called with the BM instruction when it starts on page 2. ROM pattern (bits 9 to 0) of all addresses can be used as data areas with the TABP p instruction. Fig. 10 ROM map of M34570Mx 9 8 7 6 5 4 3 2 1 0 0080 16 External 0 interrupt address 0084 16 Timer 1 interrupt address 008616 Timer 2 interrupt address 008816 Timer 3 interrupt address 00FF16 Fig. 11 Interrupt address page (addresses 008016 to 00FF16) structure 11 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER DATA MEMORY (RAM) 1 word of RAM is composed of 4 bits, but 1-bit manipulation (with the SB j, RB j, and SZB j instructions) is enabled for the entire memory area. A RAM address is specified by a data pointer. The data pointer consists of registers Z, X, and Y. Set a value to the data pointer certainly when executing an instruction to access RAM. Table 2 shows the RAM size. Figure 12 shows the RAM map. Table 2 RAM size Product M34570Mx M34570Ex RAM size 128 words ✕ 4 bits (512 bits) RAM 128 words ✕ 4 bits (512 bits) 0 Register Z Register X 0 1 2 3 ... 6 7 0 Register Y 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 128 words Fig. 12 RAM map 12 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER INTERRUPT FUNCTION The interrupt type is a vectored interrupt branching to an individual address (interrupt address) according to each interrupt source. An interrupt occurs when the following 3 conditions are satisfied. • Interrupt enable flag (INTE) = “1” (Interrupt enabled) • Interrupt enable bit = “1” (Interrupt request occurrence enabled) • An interrupt activated condition is satisfied (request flag = “1”) Table 3 shows interrupt sources. (Refer to each interrupt request flag for details of activated conditions.) (1) Interrupt enable flag (INTE) The interrupt enable flag (INTE) controls whether the every interrupt enable/disable. Interrupts are enabled when INTE flag is set to “1” with the EI instruction and disabled when INTE flag is cleared to “0” with the DI instruction. When any interrupt occurs, the INTE flag is automatically cleared to “0,” so that other interrupts are disabled until the EI instruction is executed. (2) Interrupt enable bits (V10–V13, V20–V23) Use an interrupt enable bit of interrupt control registers V1 and V2 to select the corresponding interrupt request or skip instruction. Table 4 shows the interrupt request flag, interrupt enable bit and skip instruction. Table 5 shows the interrupt enable bit function. Table 3 Interrupt sources Interrupt Priority Activated condition Interrupt name address level Address 0 1 External 0 interrupt Level change of in page 1 INT pin 2 Timer 1 underflow Address 4 Timer 1 interrupt in page 1 3 Timer 2 interrupt Timer 2 underflow Address 6 in page 1 4 Timer 3 interrupt Timer 3 underflow Address 8 in page 1 Table 4 Interrupt request flag, interrupt enable bit and skip instruction Request flag Enable bit Skip instruction Interrupt name EXF0 SNZ0 V10 External 0 interrupt Timer 1 interrupt T1F V12 SNZT1 Timer 2 interrupt T2F T3F V13 V20 SNZT2 SNZT3 Timer 3 interrupt Table 5 Interrupt enable bit function Interrupt enable bit 1 0 Occurrence of interrupt request Enabled Disabled Skip instruction Invalid Valid (3) Interrupt request flag When the activated condition for each interrupt is satisfied, the corresponding interrupt request flag is set to “1.” Each interrupt request flag is cleared to “0” when either; • an interrupt occurs, or • the next instruction is skipped with a skip instruction. Each interrupt request flag is set when the activated condition is satisfied even if the interrupt is disabled by the INTE flag or its interrupt enable bit. Once set, the interrupt request flag retains set until a clear condition is satisfied. Accordingly, an interrupt occurs when the interrupt disable state is released while the interrupt request flag is set. If more than one interrupt request flag is set when the interrupt disable state is released, the interrupt priority level is as follows shown in Table 3. 13 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER (4) Internal state during an interrupt The internal state of the microcomputer during an interrupt is as follows (Figure 14). • Program counter (PC) An interrupt address is set in program counter. The address to be executed when returning to the main routine is automatically stored in the stack register (SK). • Interrupt enable flag (INTE) INTE flag is cleared to “0” so that interrupts are disabled. • Interrupt request flag Only the request flag for the current interrupt source is cleared to “0.” • Data pointer, carry flag, skip flag, registers A and B The contents of these registers and flags are stored automatically in the interrupt stack register (SDP). (5) Interrupt processing When an interrupt occurs, a program at an interrupt address is executed after a branch to a sequence for storing data into stack register is performed. Write the branch instruction to an interrupt service routine at an interrupt address. Use the RTI instruction to return to main routine. Interrupt enabled by executing the EI instruction is performed after executing 1 instruction (just after the next instruction is executed). Accordingly, when the EI instruction is executed just before the RTI instruction, interrupts are enabled after returning to the main routine. (Refer to Figure 13) Main routine Interrupt occurs •Interrupt enable flag (INTE) ........................................................ 0 (Interrupt disabled) •Interrupt request flag (only the flag for the current interrupt source) ........................................................................................ 0 •Data pointer, carry flag, registers A and B, skip flag ............... Stored in the interrupt stack register (SDP) automatically Fig. 14 Internal state when interrupt occurs INT pin EXF0 V10 Address 0 in page 1 Timer 1 underflow T1F V12 Address 4 in page 1 Timer 2 underflow T2F V13 Address 6 in page 1 (L → H or H → L input) Activated condition T3F V20 INTE Request flag (state retained) Enable bit Enable flag Fig. 15 Interrupt system diagram EI RTI : Interrupt enabled state : Interrupt disabled state Fig. 13 Program example of interrupt processing 14 •Stack register (SK) ........... The address of main routine to be executed when returning Timer 3 underflow Interrupt service routine Interrupt is enabled •Program counter (PC) ..................................................... Each interrupt address Address 8 in page 1 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER (6) Interrupt control register ● Interrupt control register V1 Interrupt enable bits of external 0, timer 1 and timer 2 are assigned to register V1. Set the contents of this register through register A with the TV1A instruction. The TAV1 instruction can be used to transfer the contents of register V1 to register A. ● Interrupt control register V2 Interrupt enable bit of timer 3 is assigned to register V2. Set the contents of this register through register A with the TV2A instruction. The TAV2 instruction can be used to transfer the contents of register V2 to register A. Table 6 Interrupt control register Interrupt control register V1 V13 Timer 2 interrupt enable bit V12 Timer 1 interrupt enable bit V11 Not used V10 External 0 interrupt enable bit at reset : 00002 0 Interrupt disabled (SNZT2 instruction is valid) 1 Interrupt enabled (SNZT2 instruction is invalid) 0 1 Interrupt disabled (SNZT1 instruction is valid) Interrupt enabled (SNZT1 instruction is invalid) 0 1 0 1 Interrupt control register V2 V23 Not used V22 Not used V21 Not used RAM back-up : 00002 This bit has no function, but read/write is enabled. Interrupt disabled (SNZ0 instruction is valid) Interrupt enabled (SNZ0 instruction is invalid) at reset : 00002 0 1 0 1 0 1 0 R/W at RAM back-up : 00002 R/W This bit has no function, but read/write is enabled. This bit has no function, but read/write is enabled. This bit has no function, but read/write is enabled. Interrupt disabled (SNZT3 instruction is valid) 1 Interrupt enabled (SNZT3 instruction is invalid) Note: “R” represents read enabled, and “W” represents write enabled. V20 Timer 3 interrupt enable bit 15 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER conditions are satisfied. The interrupt occurs after 3 machine cycles only when the three interrupt conditions are satisfied on execution of instructions other than one-cycle instructions (Refer to Figure 16). (7) Interrupt sequence Interrupts occur only when the respective INTE flag, interrupt enable bits (V10–V13 and V20–V23), and interrupt request flags (EXF0, T1F, T2F, T3F) are “1.” The interrupt actually occurs 2 to 3 machine cycles after the cycle in which all three ● When an interrupt request flag is set after its interrupt is enabled (Note 1) 1 machine cycle T1 T2 T3 T1 T2 T3 T1 T2 T3 T1 T2 T3 T1 T2 T3 T1 T2 T3 T1 T2 T3 T1 T2 T3 T1 T2 T3 T1 T2 T3 f(XIN) System clock=f(X IN)/4 selected f(XIN) System clock=f(X IN) selected Interrupt enable flag (INTE) EI instruction execution cycle Interrupt disabled state Interrupt enabled state INT pin Retaining level for 4 cycles or more of f(X IN) is necessary. External interrupt Flag EXF0 Interrupt activated condition satisfied Timer 1, timer 2, timer 3 interrupts Flag T1F, T2F T3F Flag cleared 2 to 3 machine cycles (Notes 2, 3) Notes 1: The system clock = f(X IN)/4 is selected just after system is released from reset. 2: The address is stacked to the last cycle. 3: This interval of cycles depends on the instruction executed at the time when each interrupt activated condition is satisfied. Fig. 16 Interrupt sequence 16 Software starts from interrupt address. MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER EXTERNAL INTERRUPTS An external interrupt request occurs when a valid waveform (= waveform causing the external 0 interrupt) is input to an interrupt input pin (edge detection). The external 0 interrupt can be controlled with the interrupt control register I1. Table 7 External interrupt activated condition Name Input pin External 0 interrupt P21/INT Valid waveform Valid waveform selection bit (I12) 0 1 Falling waveform (“H”→“L”) Rising waveform (“L”→“H”) I12 Falling 0 One-sided edge detection circuit P21/INT EXF0 External 0 interrupt 1 Rising SNZI0 instruction Skip Fig. 17 External interrupt circuit structure 17 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER (1) External 0 interrupt request flag (EXF0) External 0 interrupt request flag (EXF0) is set to “1” when a valid waveform is input to P21/INT pin. The valid waveforms causing the interrupt must be retained at their level for 4 cycles or more of the system clock (Refer to Figure 16). The state of EXF0 flag can be examined with the skip instruction (SNZ0). Use the interrupt control register V1 to select the interrupt or the skip instruction. The EXF0 flag is cleared to “0” when an interrupt occurs or when the next instruction is skipped with the skip instruction. The P21/INT pin need not be selected the external interrupt input INT function or the normal input port P21 function. However, the EXF0 flag is set to “1” when a valid waveform is input to P21/INT pin even if it is used as an input port P21. (2) External interrupt control register ● Interrupt control register I1 Register I1 controls the valid waveform for the external 0 interrupt, the return level (valid level of wakeup signal) from the RAM back-up and P21/INT pin function. Set the contents of this register through register A with the TI1A instruction. The TAI1 instruction can be used to transfer the contents of register I1 to register A. ● External 0 interrupt activated condition External 0 interrupt activated condition is satisfied when a valid waveform is input to P21/INT pin. The valid waveform can be selected from rising waveform or falling waveform. An example of how to use the external 0 interrupt is as follows. ➀ Select the valid waveform with the bit 2 of register I1. ➁ Clear the EXF0 flag to “0” with the SNZ0 instruction. ➂ Set the NOP instruction for the case when a skip is performed with the SNZ0 instruction. ➃ Set both the external 0 interrupt enable bit (V10 ) and the INTE flag to “1.” The external 0 interrupt is now enabled. Now when a valid waveform is input to the P21/INT pin, the EXF0 flag is set to “1” and the external 0 interrupt occurs. Table 8 External interrupt control register Interrupt control register I1 I13 Not used I12 Interrupt valid waveform for INT pin/return level selection bit (Note 2) at reset : 00002 0 1 at RAM back-up : state retained R/W This bit has no function, but read/write is enabled. 0 Falling waveform (“L” level of INT pin is recognized with the SNZI0 instruction)/“L” level 1 Rising waveform (“H” level of INT pin is recognized with the SNZI0 instruction)/“H” level I11 Not used I10 Not used 0 1 0 This bit has no function, but read/write is enabled. This bit has no function, but read/write is enabled. 1 Notes 1: “R” represents read enabled, and “W” represents write enabled. 2: Depending on the input state of P21/INT pin, the external interrupt request flag EXF0 may be set to “1” when the contents of I12 is changed. Accordingly, set a value to bit 2 of register I1 and execute the SNZ0 instruction to clear the EXF0 flag after executing at least one instruction. 18 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER TIMERS The 4570 Group has the programmable timers and a fixed dividing frequency timer. ● Programmable timer The programmable timer has a reload register and enables the frequency dividing ratio to be set. It is decremented from a set value n. When it underflows (count to n + 1), a timer interrupt request flag is set to “1,” new data is loaded from the reload register, and count continues (auto-reload function). ● Fixed dividing frequency timer The fixed dividing frequency timer has the fixed frequency dividing ratio (n). An interrupt request flag is set to “1” every n count of a count pulse. FF16 n : Counter initial value Count starts Reload Reload The contents of counter n 1st underflow 2nd underflow 0016 Time n+1 count n+1 count Timer 1 interrupt “1” request flag “0” An interrupt occurs or a skip instruction is executed. Fig. 18 Auto-reload function 19 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER The 4570 Group timer consists of the following circuits. • Prescaler : frequency divider • Timer 1 : 10-bit programmable timer with the interrupt function and the carrier wave output auto-control function • Timer 2 : 8-bit programmable timer with the interrupt function • Timer 3 : 8-bit programmable timer with the interrupt function and the carrier wave generation function • 16-bit timer Prescaler, timer 1, timer 2 and timer 3 can be controlled with the timer control registers W1, W2 and W3. 16-bit timer is the free-run counter without the control register. Each function is described below. Table 9 Function related timers Circuit Prescaler Timer 1 Timer 2 Timer 3 16-bit timer Structure Count source • Instruction clock Frequency divider 10-bit programmable • Prescaler output (ORCLK) Frequency dividing ratio 4, 8 Use of output signal 1 to 1024 • Timer 1, 2 and 3 count sources • Timer 1 interrupt 1 to 256 binary down counter • Carrier wave generating circuit • Carrier wave output auto-control 8-bit programmable output (CARRY) • Prescaler output (ORCLK) • Timer 2 count source • Timer 2 interrupt binary down counter • Timer 1 underflow • Timer 3 count source • Instruction clock • 16-bit timer underflow • TOUT output 8-bit programmable • Prescaler output (ORCLK) binary down counter • Timer 2 underflow • f(XIN) or f(XIN)/2 16-bit fixed • Instruction clock dividing frequency 1 to 256 • Timer 3 interrupt • Timer 1 count source • Carrier wave 65536 • Watchdog timer (15-th bit output is counted twice.) • Timer 2 count source (16-bit timer underflow) 20 Control register W1 W1 (W5) W2 W3 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER Instruction clock System clock Prescaler W13 (Note 1) MR3 0 XIN Frequency dividing circuit (divided by 4) Internal clock generating circuit (divided by 3) 1 0 1/4 0 1 1/8 1 ORCLK W10(Note 1) W11 0 0 W12 Timer 1(10) 1 T1F Timer 1 interrupt 1 CARRY Reload register R1 (10) (T1AB) (TAB1) (Note 2) (TAB1) Register W5 Register B Register A Timer 1 underflow signal W21,W20 W23(Note 1) 00 01 0 10 1 Timer 2 (8) 11 T2F Timer 2 interrupt Reload register R2 (8) (TR2AB) T 2 A B (TAB2) Register B T 2 A B (TAB2) Register A Timer 2 underflow signal Register B Register A (T3HAB) Reload register R3H (8) W31,W30 MR3 1/2 Reload control circuit W33(Note1) 00 01 0 10 1 0 11 1 Not available Timer 3(8) T CARRY Q (to timer 1/port CARR) R (T3AB) W33 Reload register R3L (8) (T3AB) (TAB3) Register B T3F (TAB3) Timer 3 interrupt Register A 16-bit timer underflow signal 16-bit timer (WDT) Instruction clock 1 15 16 System reset WRST instruction S Reset signal R WEF WDF1 WDF2 Q W22 D9/TOUT 0 1 D9 output Timer 2 underflow signal 1/2 Notes 1: Count source is stopped by setting to “0.” 2: When the T1AB instruction is executed after setting W10 to “1,” data is only written to reload register R1. Fig. 19 Timers structure 21 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER Table 10 Timer control registers at reset : 00002 Timer control register W1 W13 Prescaler control bit W12 Prescaler dividing ratio selection bit W11 Timer 1 count source selection bit W10 Timer 1 control bit 0 1 Stop (prescaler state initialized) Operating 0 Instruction clock divided by 4 1 0 Instruction clock divided by 8 Prescaler output (ORCLK) 1 Carrier output (CARRY) 0 1 Stop (state retained) Operating at reset : 00002 Timer control register W2 W23 Timer 2 control bit W22 Port D9/TOUT pin function selection bit at RAM back-up : 00002 0 Stop (state retained) 1 Operating 0 1 Port D9 TOUT pin at RAM back-up : state retained Timer 2 count source selection bits W20 0 0 Prescaler output (ORCLK) 0 1 1 Timer 1 underflow signal Instruction clock 0 1 1 W33 W32 16-bit timer underflow signal at reset : 00002 Timer control register W3 Timer 3 control bit Not used at RAM back-up : state retained 0 Stop (state retained) 1 Operating 0 1 This bit has no function, but read/write is enabled. Timer 3 count source selection bits W30 Timer count value store register W5 R/W Count source W31 W30 W31 R/W Count source W21 W20 W21 R/W 0 0 Timer 2 underflow signal 0 1 1 0 Prescaler output (ORCLK) 1 1 f(XIN) or f(XIN)/2 Not available at reset : 002 at RAM back-up : state retained R/W 2-bit register. The contents of the high-order 2 bits (bits 9 and 8) of the 10-bit ROM pattern at address (D 2D1D0A3A2A1A0) in page p specified by registers D and A is stored in this register W5 with the TABP p instruction. In addition, data can be transferred between the low-order 2 bits of register A and this register W5 with the TW5A or TAW5 instruction. Data can be read/written to/from the high-order 2 bits of timer 1 with the T1AB or TAB1 instruction. Note: “R” represents read enabled, and “W” represents write enabled. 22 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER (1) Timer control registers ● Timer control register W1 Register W1 controls the count source and count operation of timer 1, the frequency dividing ratio and count operation of prescaler. Set the contents of this register through register A with the TW1A instruction. The TAW1 instruction can be used to transfer the contents of register W1 to register A. ● Timer control register W2 Register W2 controls the count operation and count source of timer 2 and D9/TOUT pin function. Set the contents of this register through register A with the TW2A instruction. The TAW2 instruction can be used to transfer the contents of register W2 to register A. ● Timer control register W3 Register W3 controls the count operation and count source of timer 3. Set the contents of this register through register A with the TW3A instruction. The TAW3 instruction can be used to transfer the contents of register W3 to register A. ● Timer count value store register W5 2-bit register. The contents of the high-order 2 bits (bits 9 and 8) of the 10-bit ROM pattern at address in page p specified by registers D and A is stored in this register W5 with the TABP p instruction. In addition, data can be transferred between the low-order 2 bits of register A and this register W5 with the TW5A or TAW5 instruction. Data can be read/written to/from the high-order 2 bits of timer 1 with the T1AB or TAB1 instruction. (2) Precautions Note the following for the use of timers. ● Prescaler Stop the prescaler operation to change its frequency dividing ratio. ● Count source Stop timer 1, 2 or 3 counting to change its count source. ● Reading the timer count value Stop each of the timers and then execute the TAB1, TAB2 or TAB3 instruction to read timer 1, 2 or 3 data. ● Writing to reload register R1 When writing data to reload register R1 while timer 1 is operating, avoid a timing when timer 1 underflows. ● Writing to reload register R3H When writing data to reload register R3H while timer 3 is operating, avoid a timing when timer 3 underflows. (3) Prescaler Prescaler is a frequency divider. Its frequency dividing ratio can be selected. The count source of prescaler is the instruction clock. Use the bit 2 of register W1 to select the prescaler dividing ratio and the bit 3 to start and stop its operation. When the bit 3 of register W1 is cleared to “0,” prescaler is initialized, and the output signal (ORCLK) stops. (4) Timer 1 (interrupt function) Timer 1 is a 10-bit binary down counter with the timer 1 reload register (R1). The 10-bit data can be set in timer 1 through registers A, B and W5. Set bits 0 to 3 to register A, bits 4 to 7 to regiser B and bits 8 to 9 to register W5 to set data to timer 1. Also, ROM pattern (bits 0 to 9) can be set to registers A, B and W5 with the TABP p instruction. Execute the T1AB instruction to set data in timer 1. When timer 1 stops, 10-bit data can be set simultaneously in timer 1 and the reload register (R1) with the T1AB instruction. When timer 1 is operating, data can be set only in the reload register (R1) with the T1AB instruction. When setting the next count data to reload register R1 while timer 1 is operating, be sure to set data before timer 1 underflows. Timer 1 starts counting after the following process; ➀ set data in timer 1, ➁ select the count source with bit 1 of register W1, ➂ set the bit 0 of register W1 to “1.” Once count is started, when timer 1 underflows (the next count pulse is input after the contents of timer 1 becomes “0”), the timer 1 interrupt request flag (T1F) is set to “1,” new data is loaded from reload register R1, and count continues (auto-reload function). When a value set in reload register R1 is n, timer 1 divides the count source signal by n + 1 (n = 0 to 1023). Data can be read from timer 1 to registers A, B and W5. Stop counting and then execute the TAB1 instruction to read its data. (5) Timer 2 (interrupt function) Timer 2 is an 8-bit binary counter with the timer 2 reload register (R2). Data can be set simultaneously in timer 2 and the reload register (R2) with the TAB2 instrucion. Also, data can be set only in the reload register (R2) with the TR2AB instruction. Timer 2 starts counting after following process; ➀ set data in timer 2, ➁ select the count source with bits 0 and 1 of register W2, ➂ set the bit 3 of register W2 to “1.” Once count is started, when timer 2 underflows (the next count pulse is input after the contents of timer 2 becomes “0”), the timer 2 interrupt request flag (T2F) is set to “1,” new data is loaded from reload register R2, and count continues (auto-reload function). When a value set in reload register R2 is n, timer 2 divides the count source signal by n+1 (n = 0 to 255). Data can be read from timer 2 to registers A and B with the TAB2 instruction. Stop counting and then execute the TAB2 instruction to read its data. 23 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER (6) Timer 3 Timer 3 is an 8-bit binary down counter with the timer 3 reload registers (R3H, R3L). Data can be set simultaneously in timer 3 and the reload register (R3L) with the T3AB instruction. Data can be set in reload register R3H with the T3HAB instruction. Timer 3 starts counting after the following process; ➀ set data in timer 3, ➁ select the count source with the bits 1 and 0 of register W3, ➂ set the bit 3 of register W3 to “1.” The f(XIN) or f(XIN)/2 is selected as the count source by setting W31 to “1” and W30 to “0.” When the f(XIN) is selected as the system clock (bit 3 of clock control register MR= “0”), f(X IN) is selected as the count source. When the f(XIN)/4 is selected as the system clock (bit 3 of clock control register MR= “1”), f(XIN)/2 is selected as the count source. Once count is started, when timer 3 underflows (the next count pulse is input after the contents of timer 3 become “0”), the timer 3 interrupt request flag (T3F) is set to “1,” new data is loaded from reload register R3H, and count coutinues (autoreload function). When the timer 3 underflows again after auto-reload is performed, the timer 3 interrupt request flag (T3F) is set to “1” and new data is reloaded from the reload register R3L and count continues. Timer 3 reloads data from reload register R3H or R3L alternately every underflow. When the T3AB instruction is executed while timer 3 is operating, new data is set in timer 3 and reload register R3L, count is started again at the next machine cycle. At the next underflow, data is reloaded from R3H and count continues regardless that auto-reload is performed from reload register R3H or R3L at the previous underflow. Data can be read from timer 3 through registers A and B. Stop counting and then execute the TAB3 instruction to read its data. Timer 3 can be also used as the carrier wave generating circuit. (7) Timer output pin (D9/TOUT) Timer output pin (D 9/T OUT) is used to output the timer 2 underflow signal. The D9/TOUT pin function can be selected by the bit 2 of register W2. (8) Timer interrupt request flags (T1F, T2F, T3F) Each timer interrupt request flag is set to “1” when each timer underflows. The state of these flags can be examined with the skip instructions (SNZT1, SNZT2, SNZT3). Use the interrupt control registers V1 and V2 to select an interrupt or a skip instruction. An interrupt request flag is cleared to “0” when an interrupt occurs or when the next instruction is skipped with a skip instruction. 24 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER WATCHDOG TIMER Watchdog timer provides a method to reset the system when a program runs wild. Watchdog timer consists of 16-bit timer (WDT), watchdog timer enable flag (WEF), and watchdog timer flags (WDF1, WDF2). Timer WDT starts downcounting the instruction clocks as the count source immediately after system is released from reset. The underflow signal is generated when the count value reaches “000016.” This underflow signal can be used as the timer 2 count source. When the WRST instruction is executed after system is released from reset, the WEF flag is set to “1.” At this time, the watchdog timer starts operating. When the count value of timer WDT reaches “BFFF 16 ” or “3FFF16,” WDF1 flag is set to “1.” Then, if the WRST instruction is not executed while the______ timer WDT counts 32767, the WDF2 flag is set to “1” and the RESET pin outputs “L” level to reset the microcomputer. In software using the watchdog timer, make sure that the WRST instruction is executed in 32766 machine cycles or less in order to keep the microcomputer operating normally. To prevent the watchdog timer from stopping in the event of misoperation, the WEF flag is designed not to be initialized once the WRST instruction has been executed. Note also that, if the WRST instruction is never executed, the watchdog timer does not start. FFFF16 BFFF16 3FFF16 Value of timer WDT 0000 16 Flag WEF Flag WDF1 Flag WDF2 RESET pin output WRST instruction WRST instruction System reset execution execution Fig. 20 Watchdog timer function The contents of the WEF flag, the WDF1 and WDF2 flags and the timer WDT are initialized at the RAM back-up mode. However, if the WDF2 flag is set to “1” at the same time that the microcomputer enters the RAM back-up mode, system reset may be performed. When using the watchdog timer and the RAM back-up mode, initialize the WDF1 flag with the WRST instruction just before the microcomputer enters the RAM back-up mode (refer to Figure 21). • •• • • • WRST ; Clear WDF1 flag EPOF ; POF instruction execution enabled POF Oscillation stop (RAM back-up mode) Fig. 21 Program example to enter the RAM back-up mode when using the watchdog timer 25 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER CARRIER WAVE GENERATING CIRCUIT The 4570 Group has a carrier wave generating circuit that generates the transfer waveform for various remote control carrier wave. The carrier wave generating circuit outputs the signal inverted every timer 3 underflow (CARRY) from port CARR. When using the carrier wave generating circuit, select the f(XIN) or f(XIN)/2 for the timer 3 count source (W31=“1”, W30=“0”). When the bit 3 of the clock control register MR is “0” (system clock=f(XIN)), f(XIN) is selected as the count source. When the bit 3 of the clock control register MR is “1” (system clock=f(XIN)/4), f(XIN)/2 is selected as the count source. Set the count value corresponding to “L” interval of carrier wave output to timer 3 reload register R3L. Set the count value corresponding to “H” interval of carrier wave output to timer 3 reload register R3H. Also, timer 1 can auto-control the carrier wave output of port CARR by setting the carrier wave output control register (C2). When timer 3 is stopped, the output level of port CARR is initialized. (“L” level) (1) Carrier wave output control register (C2) Timer 1 can auto-control the output enable interval and the output disable interval of the carrier wave output from port CARR by setting the bit 0 of register C2 to “1.” Set the contents of this register through register A with the TC2A instruction. The setting of the output enable/disable interval is described below. ➀ Validate the carrier wave output auto-control function (C20=“1”). ➁ Set the count value (“L” interval of carrier wave output) to timer 3 and reload register R3L. ➂ Set the count value (“H” interval of carrier wave output) to timer 3 reload register R3H. ➃ Set the count value (the output enable interval of carrier wave from port CARR) to timer 1. ➄ Select the carrier wave (W11 = “1”) as the timer 1 count source. ➅ Operate timer 1 (W10=“1”). ➆ Operate timer 3 (W33=“1”). ➇ Set the next count value (the output disable interval of carrier wave from port CARR) to reload register R1 before timer 1 underflow occurs. The carrier wave is output from port CARR until the first timer 3 underflow occurs. The output of the carrier wave from port CARR is disabled and the next count value is loaded from reload register R1 to timer 1 by the first timer 1 underflow. Then, the output of carrier wave is disabled until the second timer 1 underflow occurs. Also, the next enable interval of the carrier wave output can be set by setting the third count value to timer 1 reload register R1 before the second timer 1 underflow occurs. If the carrier wave output auto-control function is invalidated (C20=“0”) while the carrier wave output is auto-controlled, the output of port CARR retains the state when the auto-control is invalidated regardless of timer 1 underflow. This state can be terminated by timer 1 stop (W10=“0”). When the carrier wave output auto-control function is validated (C20=“1”) again after it is invalidated (C20=“0”), the autocontrol of carrier wave output is started again when the next timer 1 underflow occurs. Stop the timer 3 and invalidate the auto-control function by timer 1 to use the port CARR output contorl bit (C21). (2) Notes when using the carrier wave output auto-control function ● Set the timer 1 and register C2 before timer 3 is started to operate (W33=“1”). ● Stop the timer 1 (W1 0 =“0”) after stopping the timer 3 (W33=“0”) while the carrier wave output is disabled in order to stop the carrier wave output auto-control operation. ● If the carrier wave output auto-control function is invalidated (C20=“0”) while the carrier wave output is auto-controlled, the output of port CARR retains the state when the autocontrol is invalidated regardless of timer 1 underflow. When the carrier wave output auto-control function is validated (C20 =“1”) again after it is invalidated (C20 =“0”), the auto-control by timer 1 is validated again when the next timer 1 underflow occurs. However, when the carrier wave output auto-control bit (C20) is changed during timer 1 underflow, the error-operation may occur. ● When the carrier wave output auto-control function is selected, use the carrier wave CARRY as the timer 1 count source. If the ORCLK is used as the count source, a short pulse may occur in port CARR output because ORCLK is not synchronized with the carrier wave. ● When the carrier wave output auto-control function is selected and data is set to reload register R1 while timer 1 is operating, avoid the timing that the contents of timer 1 becomes “0” to execute the T1AB instruction. Table 11 Carrier wave output control register Carrier wave output control register C2 C21 Port CARR output control bit C20 Carrier wave output auto-control bit Note: “W” represents write enabled. 26 at reset : 002 at RAM back-up : 002 0 Port CARR “L” level output 1 Port CARR “H” level output 0 Auto-control output by timer 1 is invalid Auto-control output by timer 1 is valid 1 W MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER TW3A instruction Machine cycle Timer 3 start ▼ f(XIN) (divided by 3) “H” “L” 2 Timer 3 1 0 3 2 1 0 2 1 0 3 2 1 0 2 1 0 R3H Timer 3 underflow CARRY “H” “L” “H” interval “L” interval set by R3H set by R3L “a” ➝ 1 ▼ Interval “a” is set by timer 1 ▼ (C20) “1” “0” “c” “b” “d” Timer 1 start ▼ ▼ Timer 1 underflow “H” interval set by R3H ▼ Port CARR output 0216 R3L “H” “L” set by R3L “H” “L” 0316 Timer 3 reload register R3L “1” “0” “L” interval CARRY R3H R3L Timer 3 reload register R3H Interval “b” is set by reload register R1 Interval “c” is set by reload register R1 Interval “d” is set by reload register R1 Carrier wave output start “1” “0” Register C2 0 “1” “0” ▼ ➝ (C20) ▼ Carrier wave output start 0 (C20) ➝ Timer 1 underflow ▼ “H” “L” 1 (C20) ➝ Port CARR output ▼ “H” “L” 0 (C20) ➝ CARRY 1 Fig. 22 Carrier wave output auto-control by timer 1 27 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER RESET FUNCTION ____________ System reset is performed by applying “L” level to RESET pin for 1 machine cycle or more when the following condition is satisfied; • the value of supply voltage is the minimum value or more of the recommended operating conditions. ____________ Then when “H” level is applied to RESET pin, software starts from address 0 in page 0. f(XIN) RESET “H” “L” (Note) f(XIN) is counted 10757 to 10786 times Software start (Address 0 in page 0) Note: The number of clock cycles depends on the internal state of the microcomputer when reset is performed. Fig. 23 Reset release timing Reset input = 1machine cycle or more f(XIN) is counted 10757 to 10786 times 0.85VDD Software start (Address 0 in page 0) RESET 0.3VDD Note: Keep the value of supply voltage the minimum value or more of the recommended operating conditions. (Note) Fig. 24 RESET pin input waveform and reset operation (1) Power-on reset Reset can be automatically performed at power on (poweron reset) by the built-in power-on reset circuit. When the builtin power-on reset circuit is used, the time for the supply voltage to reach the minimum operating voltage must be set to 100 µ s or less. If the rising time exceeds 100 µs, connect a capacitor between the RESET pin and VSS at the shortest distance, and input “L” level to RESET pin until the value of supply voltage reaches the minimum operating voltage. VDD Pull-up transistor RESET pin Internal reset signal Power-on reset circuit Voltage drop detection circuit (Note) This symbol represents a parasitic diode. Applied potential to RESET pin must Power-on be VDD or less. Fig. 25 Power-on reset circuit example 28 Reset state Watchdog timer output WEF Note: Power-on reset circuit output voltage Internal reset signal Reset released MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER (2) Internal state at reset Table 12 shows port state at reset, and Figure 26 shows internal state at reset (they are retained after system is released from reset). The contents of timers, registers, flags and RAM except those shown in Figure 26 are undefined, so set the initial values to them. Table 12 Port state at reset Name D0–D8, D9/TOUT P00–P03 P10–P13 P20, P21/INT P30–P33 Function D0–D8, D9 P00–P03 P10–P13 P20, P21 P30–P33 P40–P43 P40–P43 CARR CARR Notes 1: Output latch is set to “1.” 2: The pull-up transistor is turned off. State High impedance (Note 1) “H” (VDD) level (Note 1) High impedance High impedance (Note 1) High impedance (Note 2) “L” (VSS) level • Program counter (PC) ............................................................................................ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Address 0 in page 0 is set to program counter. • Interrupt enable flag (INTE) ................................................................................... 0 • Power down flag (P) ...............................................................................................0 (Interrupt disabled) • External 0 interrupt request flag (EXF0) ................................................................0 • Interrupt control register V1 ................................................................................... 0 0 0 0 • Interrupt control register V2 ................................................................................... 0 0 0 0 (Interrupt disabled) (Interrupt disabled) • Interrupt control register I1 .................................................................................... 0 0 0 0 • Timer 1 interrupt request flag (T1F) ...................................................................... 0 • Timer 2 interrupt request flag (T2F) ...................................................................... 0 • Timer 3 interrupt request flag (T3F) ...................................................................... 0 • Watchdog timer flags (WDF1, WDF2) ................................................................... 0 • Watchdog timer enable flag (WEF) ....................................................................... 0 • Timer control register W1 ...................................................................................... 0 0 0 0 • Timer control register W2 ...................................................................................... 0 0 0 0 • Timer control register W3 ...................................................................................... 0 0 0 0 (Prescaler and timer 1 stopped) (Timer 2 stopped) (Timer 3 stopped) • Timer count value store register W5 ..................................................................... 0 0 • Clock control register MR ...................................................................................... 1 0 0 0 • 8-bit general-purpose register SI ........................................................................... 0 0 0 0 0 0 0 0 • Carrier wave output control register C2 ................................................................. 0 0 • Key-on wakeup control register K0 ....................................................................... 0 0 0 0 • Pull-up control register PU0 ................................................................................... 0 0 0 0 • Carry flag (CY) ....................................................................................................... 0 • Register A .............................................................................................................. 0 0 0 0 • Register B .............................................................................................................. 0 0 0 0 • Register D .............................................................................................................. ✕ ✕ ✕ • Register E .............................................................................................................. ✕ ✕ ✕ ✕ ✕ ✕ ✕ ✕ • Register X .............................................................................................................. 0 0 0 0 • Register Y .............................................................................................................. 0 0 0 0 • Register Z ............................................................................................................... ✕ ✕ • Stack pointer (SP) .................................................................................................. 1 1 1 “✕” represents undefined. Fig. 26 Internal state at reset 29 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER VOLTAGE DROP DETECTION CIRCUIT The built-in voltage drop detection circuit is designed to detect a drop in voltage and to reset the microcomputer if the supply voltage drops below a set value. The voltage drop detection circuit is not operated at the RAM back-up mode. Pull-up transistor Internal reset signal RESET pin Power-on reset circuit Voltage drop detection circuit Watchdog timer output WEF Fig. 27 Voltage drop detection reset circuit VDD Reset voltage The microcomputer starts operation after the f(XIN) is counted 10757 to 10786 times. Internal reset signal Note: Set the VDCE pin to “H” level to operate the voltage drop detection circuit. Fig. 28 Voltage drop detection circuit operation waveform 30 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER RAM BACK-UP MODE Table 13 Functions and states retained at RAM back-up The 4570 Group has the RAM back-up mode. When the EPOF and POF instructions are executed continuously, system enters the RAM back-up state. The POF instruction is equivalent to the NOP instruction when the EPOF instruction is not executed before the POF instruction. As oscillation is stopped retaining RAM, the function of reset circuit and states at RAM back-up mode, power dissipation can be reduced without losing the contents of RAM. Table 13 shows the function and states retained at RAM backup. Figure 29 shows the state transition. Function Program counter (PC), registers A, B, (1) Identification of the start condition Warm start (return from the RAM back-up mode) or cold start (return from the normal reset state) can be identified by examining the state of the power down flag (P) with the SNZP instruction. Interrupt control registers V1, V2 Interrupt control register I1 (2) Warm start condition When the external wakeup signal is input after the system enters the RAM back-up mode by executing the EPOF and POF instructions continuously, the CPU starts executing the software from address 0 in page 0. In this case, the P flag is “1.” (3) Cold start condition The CPU starts executing the software from address 0 in page 0 when; • reset pulse is input to RESET pin, or • reset by watchdog timer is performed, or • voltage drop detection circuit detects the voltage drop. In this case, the P flag is “0.” carry flag (CY), stack pointer (SP) (Note 2) Contents of RAM Port level Clock control register MR Timer control register W1 Timer control registers W2, W3 Timer count value store register W5 Carrier wave output control register C2 8-bit general-purpose register SI Timer 1 function Timer 2 function Timer 3 function Pull-up control register PU0 Key-on wakeup control register K0 External 0 interrupt request flag (EXF0) Timer 1 interrupt request flag (T1F) Timer 2 interrupt request flag (T2F) Timer 3 interrupt request flag (T3F) Watchdog timer flag 1 (WDF1) Watchdog timer flag 2 (WDF2) Watchdog timer enable flag (WEF) 16-bit timer (WDT) Interrupt enable flag (INTE) RAM back-up ✕ O O O ✕ O O ✕ O ✕ O ✕ (Note 3) (Note 3) O O ✕ ✕ (Note 3) (Note 3) ✕ (Note 4) ✕ (Note 4) ✕ (Note 4) ✕ (Note 4) ✕ Notes 1: “O” represents that the function can be retained, and “✕” represents that the function is initialized. Registers and flags other than the above are undefined at RAM back-up, and set an initial value after returning. 2: The stack pointer (SP) points the level of the stack register and is initialized to “1112” at RAM back-up. 3: The state of the timer is undefined. 4: Initialize the watchdog timer with the WRST instruction, and then execute the EPOF and POF instructions. 31 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER (4) Return signal An external wakeup signal is used to return from the RAM back-up mode because the oscillation is stopped. Table 14 shows the return condition for each return source. (5) Port P4 control registers • Key-on wakeup control register K0 Register K0 controls the port P4 key-on wakeup function. Set the contents of this register through register A with the TK0A instruction. In addition, the TAK0 instruction can be used to transfer the contents of register K0 to register A. • Pull-up control register PU0 Register PU0 controls the ON/OFF of the port P4 pull-up transistor. Set the contents of this register through register A with the TPU0A instruction. In addition, the TAPU0 instruction can be used to transfer the contents of register PU0 to register A. Table 14 Return source and return condition External wakeup signal Return source 32 Ports P0, P1 and P4 Return condition Remarks Return by an external falling edge Port P0 shares the falling edge detection circuit with ports P1 and P4. input (“H”→“L”). Key-on wakeup functions of ports P0 and P1 are always valid. The keyon wakeup function valid/invalid of port P4 can be controlled with register K0. Set the port using the key-on wakeup function selected to “H” level P21/INT pin before going into the RAM back-up mode. Return by an external “H” level or Select the return level (“L” level or “H” level) with the bit 2 of register I1 “L” level input. The EXF0 flag is not set. according to the external state before going into the RAM back-up mode. MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER POF instruction is executed A B f(XIN) stop (Stabilizing time a ) Reset f(XIN) oscillation Return input (Stabilizing time a ) (RAM back-up mode) Stabilizing time a : The time required to stabilize f(XIN) oscillation is automatically generated by hardware. Fig. 29 State transition Power down flag P POF instruction S Reset input or voltage drop detection circuit output R Software start Q P = “1” ? Yes No ● Set source ● Clear source Cold start POF instruction is executed Reset input Fig. 30 Set source and clear source of the P flag Warm start Fig. 31 Start condition identified example using the SNZP instruction Table 15 Key-on wakeup control register and pull-up control register Key-on wakeup control register K0 K03 K02 K01 K00 at reset : 00002 Port P43 key-on wakeup 0 control bit Port P42 key-on wakeup 1 0 control bit 1 Port P41 key-on wakeup control bit 0 1 Port P40 key-on wakeup 0 control bit 1 Pull-up control register PU0 PU03 PU02 PU01 Port P43 pull-up transistor control bit Port P42 pull-up transistor control bit Port P41 pull-up transistor control bit at RAM back-up : state retained R/W Key-on wakeup not used Key-on wakeup used Key-on wakeup not used Key-on wakeup used Key-on wakeup not used Key-on wakeup used Key-on wakeup not used Key-on wakeup used at reset : 00002 at RAM back-up : state retained 0 1 Pull-up transistor OFF Pull-up transistor ON 0 Pull-up transistor OFF 1 0 Pull-up transistor ON Pull-up transistor OFF 1 Pull-up transistor ON R/W Port P40 and P01 pull-up transistor Pull-up transistor OFF 0 PU00 Pull-up transistor ON control bit 1 Note: “R” represents read enabled, and “W” represents write enabled. 33 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER CLOCK CONTROL The clock control circuit consists of the following circuits. ● Clock generating circuit ● Control circuit to stop the clock oscillation ● System clock selection circuit ● Instruction clock generating circuit ● Control circuit to return from the RAM back-up mode System clock Frequency dividing circuit (divided by 4) XIN XOUT Oscillation circuit MR 3 1 0 Internal clock generating circuit (devided by 3) Insturuction clock Counter Wait time control circuit (Note) POF instruction R S Q Software start signal RESET Key-on wakeup control register K00,K0 1,K02,K0 3 Port P4 0 MultiPort P4 1 Falling detected plexer Port P4 2 Port P4 3 I12 “L” level Ports P0, P1 0 P21/INT 1 “H” level Note: The wait time control circuit is automatically used to generate the time required to stabilize the f(XIN) oscillation. Fig. 32 Clock control circuit structure Clock signal f(XIN) is obtained by externally connecting a ceramic resonator. Connect this external circuit to pins XIN and XOUT at the shortest distance. A feedback resistor is built-in between pins XIN and XOUT. M34570 XIN ROM ORDERING METHOD Please submit the information described below when ordering Mask ROM. (1) M34570M4-XXXFP Mask ROM Order Confirmation Form, M34570M8-XXXFP Mask ROM Order Confirmation Form, or M34570MD-XXXFP Mask ROM Order Confirmation Form .............................................................................................. 1 (2) Data to be written into mask ROM .......................... EPROM (three sets containing the identical data) (3) Mark Specification Form .................................................... 1 34 CIN Note: Externally connect a damping resistor Rd depending on the XOUT oscillation frequency. (A feedback resistor is built-in.) Rd Use the resonator manufacturer’s recommended value COUT because constants such as capacitance depend on the resonator. Fig. 33 Ceramic resonator external circuit MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER LIST OF PRECAUTIONS ➀ Noise and latch-up prevention Connect a capacitor on the following condition to prevent noise and latch-up; • connect a capacitor (approx. 0.1 µF) between pins VDD and VSS at the shortest distance, • equalize its wiring in width and length, and • use the thickest wire. In the One Time PROM version, CNVSS pin is also used as VPP pin. Accordingly, when using this pin, connect this pin to V SS through a resistor about 5 kΩ (connect this resistor to CNVSS/VPP pin as close as possible). ➉ Notes on timer 1 count source When the carrier wave output auto-control function is selected, use the carrier wave CARRY as the timer 1 count source. If the ORCLK is used as the count source, a short pulse may occur in port CARR output because ORCLK is not synchronized with the carrier wave. 11 Notes on writing to reload register R1 when carrier wave output auto-control operation When the carrier wave output auto-control function is selected and data is set to reload register R1 while timer 1 is operating, avoid the timing that the contents of timer 1 becomes “0” to execute the T1AB instruction. 12 One Time PROM version The operating power voltage of the One Time PROM version is within the range of 2.5 V to 5.5 V. 13 Multifunction Note that the port D9 output function and P21 input function can be used even when TOUT and INT pin function is selected. 14 POF instruction Note that system cannot enter the RAM back-up state when executing only the POF instruction. Execute the POF instruction immediately after executing the EPOF instruction to enter the RAM back-up. Be sure to disable interrupts by executing the DI instruction before executing the EPOF instruction. 15 Program counter Make sure that the PCH does not specify after the last page of the built-in ROM. 16 P21/INT pin When the interrupt valid waveform of P21/INT pin is changed with the bit 2 of register I1 in software, be careful about the following notes. • Clear the bit 0 of register V1 to “0” and then change the interrupt valid waveform of P21 /INT pin with the bit 2 of register I1 (refer to Figure 34➀). • Clear the bit 2 of register I1 to “0” and execute the SNZ0 instruction to clear the EXF0 flag after executing at least one instruction (refer to Figure 34➁). Depending on the input state of the P21/INT pin, the external 0 interrupt request flag (EXF0) may be set to “1” when the interrupt valid waveform is changed. ➁ Prescaler Stop the prescaler operation to change its frequency dividing ratio. ➂ Count source Stop timer 1, timer 2 or timer 3 counting to change its count source. ➃ Reading the timer count value Stop each of the timers and then execute the TAB1, TAB2 or TAB3 instruction to read timer 1, 2 or 3 data. ➄ Writing to reload register R1 When writing the data to reload register R1 while timer 1 is operating, avoid a timing when timer 1 underflows. ➅ Writing to reload register R3H When writing the data to reload register R3H while timer 3 is operating, avoid a timing when timer 3 underflows. ➆ Notes on timer 3 operation start Set the timer 1 and register C2 before timer 3 is started to operate (W33=“1”). ➇ Notes on carrier wave output auto-control operation stop Stop the timer 1 (W10=“0”) after stopping the timer 3 (W33=“0”) while the carrier wave output is disabled in order to stop the carrier wave output auto-control operation. ➈ Notes on setting carrier wave output control regiter C2 If the carrier wave output auto-control function is invalidated (C20=“0”) while the carrier wave output is auto-controlled, the output of port CARR retains the state when the auto-control is invalidated regardless of timer 1 underflow. When the carrier wave output auto-control function is validated (C20=“1”) again after it is invalidated (C20=“0”), the auto-control by timer 1 is validated again when the next timer 1 underflow occurs. However, when the carrier wave output auto-control bit (C20) is changed during timer 1 underflow, the error-operation may occur. ... LA 4 TV1A LA TI1A ; (✕✕✕02) ; The SNZ0 instruction is valid ; Change of the interrupt valid waveform ➁ NOP SNZ0 NOP ... ➀ 4 ;The SNZ0 instruction is executed ✕ : this bit is not related to the setting of INT. Fig. 34 External 0 interrupt program example 35 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER SYMBOL The symbols shown below are used in the following list of instruction function and machine instructions. Contents Symbol A B Register A (4 bits) DR Register D (3 bits) Register E (8 bits) E C2 SI V1 V2 I1 W1 W2 W3 W5 K0 PU0 MR X Y Z DP PC PCH PCL SK SP CY R1 R2 R3H R3L T1 T2 T3 T1F Register B (4 bits) Carrier wave output control register C2 (2 bits) Symbol WDF1 WDF2 WEF INTE EXF0 Contents Watchdog timer flag 1 Watchdog timer flag 2 Watchdog timer enable flag Interrupt enable flag External 0 interrupt request flag 8-bit general-purpose register SI (8 bits) Interrupt control register V1 (4 bits) P Power down flag Interrupt control register V2 (4 bits) D Port D (10 bits) Interrupt control register I1 (4 bits) Timer control register W1 (4 bits) P0 Port P0 (4 bits) Port P1 (4 bits) Timer control register W2 (4 bits) Timer control register W3 (4 bits) Timer count value store register W5 (2 bits) Key-on wakeup control register K0 (4 bits) Pull-up control register PU0 (4 bits) Clock control register MR (4 bits) Register X (4 bits) P1 P2 P3 P4 x y z p Port P2 (2 bits) Port P3 (4 bits) Port P4 (4 bits) Hexadecimal variable Hexadecimal variable Hexadecimal variable Hexadecimal variable Register Y (4 bits) Register Z (2 bits) n Hexadecimal constant which represents the immediate value Data pointer (10 bits) i Hexadecimal constant which represents the (It consists of registers X, Y, and Z) Program counter (14 bits) j immediate value Hexadecimal constant which represents the A3A2A1A0 immediate value Binary notation of hexadecimal variable A High-order 7 bits of program counter Low-order 7 bits of program counter Stack register (14 bits ✕ 8) Stack pointer (3 bits) Carry flag Timer 1 reload register Timer 2 reload register Timer 3 reload register (same for others) ← Direction of data movement ↔ ? Data exchange between a register and memory ( ) Decision of state shown before “?” Contents of registers and memories Timer 3 reload register — Negate, Flag unchanged after executing Timer 1 Timer 2 M(DP) instruction RAM address pointed by the data pointer Timer 3 T2F Timer 1 interrupt request flag Timer 2 interrupt request flag T3F Timer 3 interrupt request flag a p, a Label indicating address a6 a5 a4 a3 a2 a1 a0 C + Hex. C + Hex. number x (also same for others) Label indicating address a6 a5 a4 a3 a2 a1 a0 in page p5 p4 p3 p2 p1 p0 x Note : The 4570 Group just invalidates the next instruction when a skip is performed. The contents of program counter is not increased by 2. Accordingly, the number of cycles does not change even if skip is not performed. However, the cycle count becomes “1” if the TABP p, RT, or RTS instruction is skipped. 36 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER LIST OF INSTRUCTION FUNCTION (A) ← (B) TBA (B) ← (A) TYA TEAB (A) ← (Y) (Y) ← (A) Grouping Function Mnemonic (A) ← → (M(DP)) XAMI j (X) ← (X)EXOR(j) j = 0 to 15 (Y) ← (Y) + 1 TMA j (M(DP)) ← (A) (X) ← (X)EXOR(j) LA n (A) ← n (B) ← (E7–E4) (A) ← (E3–E0) TABP p (SP) ← (SP) + 1 (SK(SP)) ← (PC) (PCH) ← p (DR2–DR0) ← (A2–A0) j = 0 to 3 RB j (Mj(DP)) ← 0 j = 0 to 3 SZB j (Mj(DP)) = 0 ? j = 0 to 3 A3–A0) (W5) ← (ROM(PC))9 to 8 TAZ (A1, A0) ← (Z1, Z0) (A3, A2) ← 0 TAX (A) ← (X) (A) ← (ROM(PC))3 to 0 (PC) ← (SK(SP)) LXY x, y (A2–A0) ← (SP2–SP0) (A3) ← 0 (X) ← x, x = 0 to 15 (Y) ← y, y = 0 to 15 LZ z (Z) ← z, z = 0 to 3 INY (Y) ← (Y) + 1 Arithmetic operation TASP AM (A) ← (A) + (M(DP)) AMC (A) ← (A) + (M(DP)) Branch operation (A2–A0) ← (DR2–DR0) (A3) ← 0 SEAM (A) = (M(DP)) ? SEA n (A) = n ? n = 0 to 15 Ba (PCL) ← a6–a0 BL p, a (PCH) ← p (PCL) ← a6–a0 BLA p (PCH) ← p (PC L ) ← (DR 2 –DR 0 , A3–A0) BM a (PCH) ← 2 (PCL) ← a6–a0 + (CY) (CY) ← Carry An (A) ← (A) + n n = 0 to 15 AND (A) ← (A)AND(M(DP)) DEY (Y) ← (Y) – 1 OR (A) ← (A)OR(M(DP)) TAM j (A) ← (M(DP)) (X) ← (X)EXOR(j) SC (CY) ← 1 j = 0 to 15 RC (CY) ← 0 (A) ← → (M(DP)) SZC (CY) = 0 ? CMA (A) ← (A) BML p, a (SP) ← (SP) + 1 (SK(SP)) ← (PC) (PCH) ← p (PCL) ← a6–a0 BMLA p (PCL) ← (DR2–DR0, A3–A0) XAMD j (A) ← → (M(DP)) (X) ← (X)EXOR(j) j = 0 to 15 RAR → CY → A3A2A1A0 (PC) ← (SK(SP)) (SP) ← (SP) – 1 Return operation (X) ← (X)EXOR(j) j = 0 to 15 (SP) ← (SP) + 1 (SK(SP)) ← (PC) (PCH) ← p RTI XAM j (SP) ← (SP) + 1 (SK(SP)) ← (PC) Subroutine operation TAD (SP) ← (SP) – 1 RAM addresses (Mj(DP)) ← 1 (PC L ) ← (DR 2 –DR 0 , (B) ← (ROM(PC))7 to 4 RAM to register transfer SB j j = 0 to 15 n = 0 to 15 TDA Function Mnemonic (E7–E4) ← (B) (E3–E0) ← (A) TABE Grouping Bit operation TAB TAY Register to register transfer Function Comparison operation Mnemonic RAM to register transfer Grouping RT (PC) ← (SK(SP)) (SP) ← (SP) – 1 RTS (PC) ← (SK(SP)) (SP) ← (SP) – 1 (Y) ← (Y) – 1 37 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER LIST OF INSTRUCTION FUNCTION (CONTINUED) Grouping Mnemonic Function Grouping Mnemonic Function Grouping Mnemonic Function (B) ← (T37–T34) DI (INTE) ← 0 TAW1 (A) ← (W1) EI (INTE) ← 1 TW1A (W1) ← (A) SNZ0 (EXF0) = 1 ? TAW2 (A) ← (W2) (T37–T34) ← (B) TW2A (W2) ← (A) (R3L3–R3L0) ← (A) (T33–T30) ← (A) TAB3 (A) ← (T33–T30) T3AB Interrupt operation instruction, (EXF0) ← 0 TAW3 (A) ← (W3) I12 = 1 : (INT0) = “H” ? I12 = 0 : (INT0) = “L” ? TW3A (W3) ← (A) TAV1 (A) ← (V1) TAW5 (A) ← (0, 0, W51, W50) TV1A (V1) ← (A) TW5A (W51, W50) ← (A1, A0) TAV2 (A) ← (V2) TAB1 (W5) ← (T19–T18) SNZI0 Timer operation After skipping the next T3HAB (R3H7–R3H4) ← (B) (R3H3–R3H0) ← (A) SNZT1 (T1F) = 1 ? After skipping the next instruction, (T1F) ← 0 SNZT2 (B) ← (T17–T14) TV2A (V2) ← (A) TAI1 (A) ← (I1) TI1A (I1) ← (A) (R3L7–R3L4) ← (B) (T2F) = 1 ? After skipping the next instruction, (A) ← (T13–T10) (T2F) ← 0 T1AB at timer 1 stop (W10=0) Timer operation (R19–R18) ← (W5) (T19–T18) ← (W5) (R17–R14) ← (B) (T17–T14) ← (B) (R13–R10) ← (A) (T13–T10) ← (A) At timer 1 operating (W10=1), (R19–R18) ← (W5) (R17–R14) ← (B) (R13–R10) ← (A) TAB2 (B) ← (T27–T24) (A) ← (T23–T20) T2AB (R27–R24) ← (B) (T27–T24) ← (B) (R23–R20) ← (A) (T23–T20) ← (A) TR2AB (R27–R24) ← (B) (R23–R20) ← (A) 38 SNZT3 (T3F) = 1 ? After skipping the next instruction, (T3F) ← 0 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER LIST OF INSTRUCTION FUNCTION (CONTINUED) Mnemonic Function Function NOP (PC) ← (PC) + 1 OP0A (P0) ← (A) POF RAM back-up mode IAP1 (A) ← (P1) EPOF POF instruction valid OP1A (P1) ← (A) SNZP (P) = 1 ? IAP2 (A1, A0) ← (P21, P20) WRST (WDF1) ← 0, (WEF) ←1 TAMR (A) ← (MR3–MR0) TMRA (MR3–MR0) ← (A) TABSI (B) ← (SI7–SI4) IAP3 Input/Output operation Mnemonic (A) ← (P0) (A3, A2) ← (0) (A) ← (P3) OP3A (P3) ← (A) IAP4 (A) ← (P4) CLD (D) ← 1 RD (D(Y)) ← 0 (Y) = 0 to 9 SD (A) ← (SI3–SI0) TSIAB (SI7–SI4) ← (B) (SI3–SI0) ← (A) SBK When executing the TABP p instruction, p6 ← 1 (D(Y)) ← 1 (Y) = 0 to 9 Carrier wave generating operation Grouping IAP0 Other operation Grouping TK0A (K0) ← (A) TAK0 (A) ← (K0) TPU0A (PU0) ← (A) TAPU0 (A) ← (PU0) TC2A (C21, C20) ← (A1, A0) RBK When executing the TABP p instruction, p6 ← 0 39 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER INSTRUCTION CODE TABLE — 010000 011000 — D9—D4 000000 000001000010 000011000100 000101000110 000111001000 001001001010 001011001100 001101001110 001111 010111 011111 D3— Hex. notation D0 00 01 03 02 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10—17 18—1F 0000 0 NOP BLA SZB BMLA RBK TASP 0 A 0 LA 0 TABP TABP TABP TABP 0* 16* 32** 48** BML BML BL BL BM B 0001 1 — CLD SZB 1 — SBK TAD A 1 LA 1 TABP TABP TABP TABP BML 1* 17* 33** 49** BML BL BL BM B 0010 2 POF — SZB 2 — — TAX A 2 LA 2 TABP TABP TABP TABP 2* 18* 34** 50** BML BML BL BL BM B 0011 3 SZB 3 — — TAZ A 3 LA 3 TABP TABP TABP TABP BML BML 3* 19* 35** 51** BL BL BM B 0100 4 DI RD — — RT TAV1 A 4 LA 4 TABP TABP TABP TABP 4* 20* 36** 52** BML BML BL BL BM B 0101 5 EI SD SEAn — RTS TAV2 A 5 LA 5 TABP TABP TABP TABP 5* 21* 37** 53** BML BML BL BL BM B 0110 6 RC — SEAM — RTI — A 6 LA 6 TABP TABP TABP TABP BML 6* 22* 38** 54** BML BL BL BM B 0111 7 SC DEY — — — A 7 LA 7 TABP TABP TABP TABP 7* 23* 39** 55** BML BML BL BL BM B 1000 8 — AND — LZ 0 — A 8 LA 8 TABP TABP TABP TABP 8* 24* 40** 56** BML BML BL BL BM B 1001 9 — OR LZ 1 — A 9 LA 9 TABP TABP TABP TABP 9* 25* 41** 57** BML BML BL BL BM B 1010 A AM TEAB TABE SNZI0 LZ 2 — A 10 LA 10 TABP TABP TABP TABP 10* 26* 42** 58** BML BML BL BL BM B 1011 B AMC 1100 C 1101 D 1110 1111 SNZP INY — SNZ0 TDA — — — LZ 3 EPOF A 11 LA 11 TABP TABP TABP TABP 11* 27* 43** 59** BML BML BL BL BM B TYA CMA — — RB 0 SB 0 A 12 LA 12 TABP TABP TABP TABP 12* 28* 44** 60** BML BML BL BL BM B — RAR — — RB 1 SB 1 A 13 LA 13 TABP TABP TABP TABP 13* 29* 45** 61** BML BML BL BL BM B E TBA TAB — TV2A RB 2 SB 2 A 14 LA 14 TABP TABP TABP TABP BML BML 14* 30* 46** 62** BL BL BM B F — TAY SZC TV1A RB 3 SB 3 A 15 LA 15 TABP TABP TABP TABP 15* 31* 47** 63** BML BML BL BL BM B — The above table shows the relationship between machine language codes and machine language instructions. D 3—D 0 show the loworder 4 bits of the machine language code, and D 9—D 4 show the high-order 6 bits of the machine language code. The hexadecimal representation of the code is also provided. There are one-word instructions and two-word instructions, but only the first word of each instruction is shown. Do not use code marked "—." ** cannot be used at M34570M4. For M34570M4/M8/E8, the SBK and RBK instructions cannot be used. For M34570MD/ED, the pages which is referred with the TABP instruction (*, **) can be switched with the SBK and RBK instructions. After executing the SBK instruction, the pages which can be referred with the TABP instruction are 64 to 127. (ex. TABP 0 →TABP 64) After executing the RBK instruction, the pages which can be referred with the TABP instruction are 0 to 63. If the SBK instruction is not executed, the pages which can be referred with the TABP instruction are always 0 to 63. The codes for the second word of a two-word instruction are described below. The second word 40 BL 1p paaa aaaa BML BLA 1p paaa aaaa 1p pp00 pppp BMLA 1p pp00 pppp SEA 00 0111 nnnn SZD 00 0010 1011 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER INSTRUCTION CODE TABLE (CONTINUED) D3— Hex. 20 D0 notation 21 23 22 24 25 — — WRST TMA TAM XAM XAMI XAMD LXY 0 0 0 0 0 — — IAP1 TAB2 SNZT2 — — TMA TAM XAM XAMI XAMD LXY 1 1 1 1 1 TAMR IAP2 TAB3 SNZT3 — — TMA TAM XAM XAMI XAMD LXY 2 2 2 2 2 1 — — 0010 2 — TW5A — T3AB — 0011 3 — — OP3A — — 0100 4 — — — — — — 0101 5 — — — — — 0110 6 — TMRA — — 0111 7 — TI1A — 1000 8 — — 1001 9 — 1010 A 1011 OP1A T2AB 2F 30—3F — 0001 TW3A OP0A T1AB 2E IAP0 TAB1 SNZT1 — 28 2D 2A 0 27 111111 29 0000 26 110000 — D9—D4 100000 100001100010 100011100100 100101100110 100111101000 101001101010 101011101100 101101101110 101111 2B 2C — — — — TMA TAM XAM XAMI XAMD LXY 3 3 3 3 3 IAP4 — — — — TMA TAM XAM XAMI XAMD LXY 4 4 4 4 4 — — — — — — TMA TAM XAM XAMI XAMD LXY 5 5 5 5 5 — TAK0 — — — — — TMA TAM XAM XAMI XAMD LXY 6 6 6 6 6 — — TAPU0 — — — — — TMA TAM XAM XAMI XAMD LXY 7 7 7 7 7 — TSIAB — — — TABSI — — — TMA TAM XAM XAMI XAMD LXY 8 8 8 8 8 — — — — — — — — — TC2A TMA TAM XAM XAMI XAMD LXY 9 9 9 9 9 — — — TR2AB — — — — — — — TMA TAM XAM XAMI XAMD LXY 10 10 10 10 10 B — TK0A — — TAW1 — — — — — — TMA TAM XAM XAMI XAMD LXY 11 11 11 11 11 1100 C — — — — TAW2 — — — — — — TMA TAM XAM XAMI XAMD LXY 12 12 12 12 12 1101 D — — TPU0A T3HAB TAW3 — — — — — — TMA TAM XAM XAMI XAMD LXY 13 13 13 13 13 1110 E TW1A — — — — — — — — — — TMA TAM XAM XAMI XAMD LXY 14 14 14 14 14 1111 F TW2A — — — TAW5 — — — — — — TMA TAM XAM XAMI XAMD LXY 15 15 15 15 15 TAI1 IAP3 The above table shows the relationship between machine language codes and machine language instructions. D 3–D0 show the low-order 4 bits of the machine language code, and D 9–D4 show the high-order 6 bits of the machine language code. The hexadecimal representation of the code is also provided. There are one-word instructions and two-word instructions, but only the first word of each instruction is shown. Do not use code marked “–.” The codes for the second word of a two-word instruction are described below. The second word BL 1p paaa aaaa BML 1p paaa aaaa BLA 1p pp00 pppp BMLA 1p pp00 pppp SEA 00 0111 nnnn SZD 00 0010 1011 41 MITSUBISHI MICROCOMPUTERS MITSUBISHI MICROCOMPUTERS 4570 Group 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER Type of Mnemonic D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Register to register transfer instructions Hexadecimal notation Function Skip condition Carry flag CY Instruction code Parameter Number of words Number of cycles MACHINE INSTRUCTIONS Detailed description TAB 0 0 0 0 0 1 1 1 1 0 0 1 E 1 1 (A) ← (B) – – Transfers the contents of register B to register A. TBA 0 0 0 0 0 0 1 1 1 0 0 0 E 1 1 (B) ← (A) – – Transfers the contents of register A to register B. TAY 0 0 0 0 0 1 1 1 1 1 0 1 F 1 1 (A) ← (Y) – – Transfers the contents of register Y to register A. TYA 0 0 0 0 0 0 1 1 0 0 0 0 C 1 1 (Y) ← (A) – – Transfers the contents of register A to register Y. TEAB 0 0 0 0 0 1 1 0 1 0 0 1 A 1 1 (E7–E4) ← (B) – – Transfers the contents of registers A and B to register E. – – Transfers the contents of register E to registers A and B. (E3–E0) ← (A) TABE 0 0 0 0 1 0 1 0 1 0 0 2 A 1 1 (B) ← (E7–E4) (A) ← (E3–E0) TDA 0 0 0 0 1 0 1 0 0 1 0 2 9 1 1 (DR2–DR0) ← (A2–A0) – – Transfers the contents of register A to register D. TAD 0 0 0 1 0 1 0 0 0 1 0 5 1 1 1 (A2–A0) ← (DR2–DR0) – – Transfers the contents of register D to register A. – – Transfers the contents of register Z to register A. (A3) ← 0 TAZ 0 0 0 1 0 1 0 0 1 1 0 5 3 1 1 (A1, A0) ← (Z1, Z0) (A3, A2) ← 0 TAX 0 0 0 1 0 1 0 0 1 0 0 5 2 1 1 (A) ← (X) – – Transfers the contents of register X to register A. TASP 0 0 0 1 0 1 0 0 0 0 0 5 0 1 1 (A2–A0) ← (SP2–SP0) (A3) ← 0 – – Transfers the contents of stack pointer (SP) to register A. LXY x, y 1 1 x3 x2 x1 x0 y3 y2 y1 y0 3 x y 1 1 (X) ← x, x = 0 to 15 (Y) ← y, y = 0 to 15 Continuous description – Loads the value x in the immediate field to register X, and the value y in the immediate field to register Y. When the LXY instructions are continuously coded and executed, only the first LXY instruction is executed RAM addresses and other LXY instructions coded continuously are skipped. LZ z 0 0 0 1 0 0 1 0 z1 z0 0 4 8 1 1 (Z) ← z, z = 0 to 3 1 1 (Y) ← (Y) + 1 – – Loads the value z in the immediate field to register Z. (Y) = 0 – Adds 1 to the contents of register Y. As a result of addition, when the contents of register Y is 0, the +z INY 0 0 0 0 0 1 0 0 1 1 0 1 3 next instruction is skipped. DEY 0 0 0 0 0 1 0 1 1 1 0 1 7 1 1 (Y) ← (Y) – 1 (Y) = 15 – Subtracts 1 from the contents of register Y. As a result of subtraction, when the contents of register Y is 15, the next instruction is skipped. 42 43 MITSUBISHI MICROCOMPUTERS MITSUBISHI MICROCOMPUTERS 4570 Group 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER Type of Mnemonic D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 instructions TAM j 1 0 1 1 0 0 j j j j Hexadecimal notation 2 C j 1 1 Function (A) ← (M(DP)) (X) ← (X)EXOR(j) Skip condition Carry flag CY Instruction code Parameter Number of words Number of cycles MACHINE INSTRUCTIONS (CONTINUED) – – After transferring the contents of M(DP) to register A, an exclusive OR operation is performed between register X and the value j in the immediate field, and stores the result in register X. – – After exchanging the contents of M(DP) with the contents of register A, an exclusive OR operation is Detailed description j = 0 to 15 XAM j 1 0 1 1 0 1 j j j j 2 D j 1 1 (A) ← → (M(DP)) (X) ← (X)EXOR(j) performed between register X and the value j in the immediate field, and stores the result in register X. RAM to register transfer j = 0 to 15 XAMD j XAMI j TMA j 1 1 1 0 0 0 1 1 1 1 1 0 1 1 1 1 0 1 j j j j j j j j j j j j 2 F 2 E 2 B j j j 1 1 1 1 1 1 (A) ← → (M(DP)) (Y) = 15 – After exchanging the contents of M(DP) with the contents of register A, an exclusive OR operation is (X) ← (X)EXOR(j) j = 0 to 15 performed between register X and the value j in the immediate field, and stores the result in register X. Subtracts 1 from the contents of register Y. As a result of subtraction, when the contents of register Y (Y) ← (Y) – 1 is 15, the next instruction is skipped. (A) ← → (M(DP)) (Y) = 0 – After exchanging the contents of M(DP) with the contents of register A, an exclusive OR operation is (X) ← (X)EXOR(j) performed between register X and the value j in the immediate field, and stores the result in register X. j = 0 to 15 (Y) ← (Y) + 1 Adds 1 to the contents of register Y. As a result of addition, when the contents of register Y is 0, the next instruction is skipped. (M(DP)) ← (A) (X) ← (X)EXOR(j) – – After transferring the contents of register A to M(DP), an exclusive OR operation is performed between register X and the value j in the immediate field, and stores the result in register X. (A) ← n Continuous – Loads the value n in the immediate field to register A. n = 0 to 15 description j = 0 to 15 LA n 0 0 0 1 1 1 n n n n 0 7 n 1 1 When the LA instructions are continuously coded and executed, only the first LA instruction is executed Arithmetic operation and other LA instructions coded continuously are skipped. TABP p 0 0 1 0 p5 p4 p3 p2 p1 p0 0 8 +p p 1 3 (SP) ← (SP) + 1 – – Transfers bits 9 and 8 to register W5, bits 7 to 4 to register B and bits 3 to 0 to register A. These bits 9 (SK(SP)) ← (PC) (PCH) ← p to 0 are the ROM pattern in address (DR2 DR1 DR0 A3 A2 A1 A0)2 specified by registers A and D in page p. (PCL) ← (DR2–DR0, A3–A0) When this instruction is executed, 1 stage of stack register is used. (W5) ← (ROM(PC))9 to 8 (B) ← (ROM(PC))7 to 4 When this instruction is executed after executing the SBK instruction, pages 64 to 127 are specified. When this instruction is executed after executing the RBK instruction, pages 0 to 63 are specified. (A) ← (ROM(PC))3 to 0 When this instruction is executed after system is released from reset or returned from RAM back-up, (PC) ← (SK(SP)) (SP) ← (SP) – 1 pages 0 to 63 are specified. (Note) Note: p is 0 to 31 for M34570M4 and p is 0 to 63 for M34570E8 and M34570M8. p is 0 to 127 for M34570ED and M34570MD, and p6 is specified with the SBK and RBK instructions. 44 45 MITSUBISHI MICROCOMPUTERS MITSUBISHI MICROCOMPUTERS 4570 Group 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER Type of Mnemonic D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 instructions Hexadecimal notation Function Skip condition Carry flag CY Instruction code Parameter Number of words Number of cycles MACHINE INSTRUCTIONS (CONTINUED) – AM 0 0 0 0 0 0 1 0 1 0 0 0 A 1 1 (A) ← (A) + (M(DP)) – AMC 0 0 0 0 0 0 1 0 1 1 0 0 B 1 1 (A) ← (A) + (M(DP))+ (CY) (CY) ← Carry – An 0 0 0 1 1 0 n n n n 0 6 n 1 1 (A) ← (A) + n Overflow = 0 Arithmetic operation Bit operation Comparison operation Adds the contents of M(DP) to register A. Stores the result in register A. The contents of carry flag CY remains unchanged. 0/1 Adds the contents of M(DP) and carry flag CY to register A. Stores the result in register A and carry flag CY. – n = 0 to 15 46 Detailed description Adds the value n in the immediate field to register A. The contents of carry flag CY remains unchanged. Skips the next instruction when there is no overflow as the result of operation. AND 0 0 0 0 0 1 1 0 0 0 0 1 8 1 1 (A) ← (A)AND(M(DP)) – – Performs the AND operation between the contents of register A and the contents of M(DP), and stores the result in register A. OR 0 0 0 0 0 1 1 0 0 1 0 1 9 1 1 (A) ← (A)OR(M(DP)) – – Performs the OR operation between the contents of register A and the contents of M(DP), and stores the result in register A. SC 0 0 0 0 0 0 0 1 1 1 0 0 7 1 1 (CY) ← 1 – 1 Sets carry flag CY to “1.” RC 0 0 0 0 0 0 0 1 1 0 0 0 6 1 1 (CY) ← 0 – 0 Clears carry flag CY to “0.” SZC 0 0 0 0 1 0 1 1 1 1 0 2 F 1 1 (CY) = 0 ? (CY) = 0 – Skips the next instruction when the contents of carry flag CY is “0.” CMA 0 0 0 0 0 1 1 1 0 0 0 1 C 1 1 (A) ← (A) – – Stores the one’s complement for register A’s contents in register A. RAR 0 0 0 0 0 1 1 1 0 1 0 1 D 1 1 → CY → A3A2A1A0 – SB j 0 0 0 1 0 1 1 1 j j 0 5 C +j 1 1 (Mj(DP)) ← 1 j = 0 to 3 – – Sets the contents of bit j (bit specified by the value j in the immediate field) of M(DP) to “1.” RB j 0 0 0 1 0 0 1 1 j j 0 4 C +j 1 1 (Mj(DP)) ← 0 j = 0 to 3 – – Clears the contents of bit j (bit specified by the value j in the immediate field) of M(DP) to “0.” SZB j 0 0 0 0 1 0 0 0 j j 0 2 j 1 1 (Mj(DP)) = 0 ? j = 0 to 3 (Mj(DP)) = 0 j = 0 to 3 – Skips the next instruction when the contents of bit j (bit specified by the value j in the immediate field) of M(DP) is “0.” SEAM 0 0 0 0 1 0 0 1 1 0 0 2 6 1 1 (A) = (M(DP)) ? (A) = (M(DP)) – Skips the next instruction when the contents of register A is equal to the contents of M(DP). SEA n 0 0 0 0 1 0 0 1 0 1 0 2 5 2 2 (A) = n ? n = 0 to 15 (A) = n – Skips the next instruction when the contents of register A is equal to the value n in the immediate field. 0 0 0 1 1 1 n n n n 0 7 n 0/1 Rotates the contents of register A including the contents of carry flag CY to the right by 1 bit. 47 MITSUBISHI MICROCOMPUTERS MITSUBISHI MICROCOMPUTERS 4570 Group 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER Type of Mnemonic D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Branch operation instructions Hexadecimal notation Function Skip condition Carry flag CY Instruction code Parameter Number of words Number of cycles MACHINE INSTRUCTIONS (CONTINUED) Detailed description Ba 0 1 1 a6 a5 a4 a3 a2 a1 a0 1 8 a +a 1 1 (PCL) ← a6–a0 – – Branch within a page : Branches to address a in the identical page. BL p, a 0 0 1 1 p4 p3 p2 p1 p0 0 E p +p 2 2 (PCH) ← p (PCL) ← a6–a0 – – Branch out of a page : Branches to address a in page p. 1 0 p5 a6 a5 a4 a3 a2 a1 a0 2 p a +a 0 0 0 0 1 0 0 1 0 – – Branch out of a page : Branches to address (DR2 DR1 DR0 A3 A2 A1 A0)2 specified by registers D and A in page p. 1 0 p5 p4 0 0 p3 p2 p1 p0 2 p p 0 1 0 a6 a5 a4 a3 a2 a1 a0 1 a a – – Call the subroutine in page 2 : Calls the subroutine at address a in page 2. – – Call the subroutine : Calls the subroutine at address a in page p. – – Call the subroutine : Calls the subroutine at address (DR2 DR1 DR0 A3 A2 A1 A0)2 specified by registers D and A in page p. – – Returns from interrupt service routine to main routine. Returns each value of data pointer (X, Y, Z), carry flag, skip status, NOP mode status by the continuous 1 (Note) BLA p BM a 0 0 0 0 2 2 (PCH) ← p (PCL) ← (DR2–DR0, A3–A0) (Note) 1 1 (SP) ← (SP) + 1 (SK(SP)) ← (PC) Subroutine operation (PCH) ← 2 (PCL) ← a6–a0 BML p, a 0 0 1 1 0 p4 p3 p2 p1 p0 1 0 p5 a6 a5 a4 a3 a2 a1 a0 2 p a +a 0 0 0 1 1 0 0 3 0 1 0 p5 p4 0 0 p3 p2 p1 p0 2 p p 0 C p +p 2 2 (SP) ← (SP) + 1 (SK(SP)) ← (PC) (PCH) ← p BMLA p 0 0 0 0 (PCL) ← a6–a0 (Note) 2 2 (SP) ← (SP) + 1 (SK(SP)) ← (PC) (PCH) ← p (PCL) ← (DR2–DR0, A3–A0) (Note) Return operation RTI 0 0 0 1 0 0 0 1 1 0 0 4 6 1 1 (PC) ← (SK(SP)) (SP) ← (SP) – 1 description of the LA/LXY instruction, register A and register B to the states just before interrupt. RT 0 0 0 1 0 0 0 1 0 0 0 4 4 1 2 (PC) ← (SK(SP)) – – Returns from subroutine to the routine called the subroutine. Skip unconditionally – Returns from subroutine to the routine called the subroutine, and skips the next instruction unconditionally. (SP) ← (SP) – 1 RTS 0 0 0 1 0 0 0 1 0 1 0 4 5 1 2 (PC) ← (SK(SP)) (SP) ← (SP) – 1 Note: p is 0 to 31 for M34570M4 and p is 0 to 63 for M34570E8 and M34570M8. p is 0 to 127 for M34570ED and M34570MD, and p6 is specified with the SBK and RBK instructions. 48 49 MITSUBISHI MICROCOMPUTERS MITSUBISHI MICROCOMPUTERS 4570 Group 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER Type of Mnemonic D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 instructions Hexadecimal notation Function Skip condition Carry flag CY Instruction code Parameter Number of words Number of cycles MACHINE INSTRUCTIONS (CONTINUED) Detailed description DI 0 0 0 0 0 0 0 1 0 0 0 0 4 1 1 (INTE) ← 0 – – Clears the interrupt enable flag INTE to “0,” and disables the interrupt. EI 0 0 0 0 0 0 0 1 0 1 0 0 5 1 1 (INTE) ← 1 – – Sets the interrupt enable flag INTE to “1,” and enables the interrupt. SNZ0 0 0 0 0 1 1 1 0 0 0 0 3 8 1 1 (EXF0) = 1 ? After skipping the next instruction, (EXF0) = 1 – Skips the next instruction when the contents of EXF0 flag is “1.” After skipping, clears the EXF0 flag to “0.” (INT) = “H” – When bit 2 (I12) of register I1 is “1” : Skips the next instruction when the level of INT pin is “H.” – When bit 2 (I12) of register I1 is “0” : Skips the next instruction when the level of INT pin is “L.” Timer operation Interrupt operation (EXF0) ← 0 SNZI0 0 0 0 0 1 1 1 0 1 0 0 3 A 1 1 I12 = 1 : (INT) = “H” ? However, I12 = 1 I12 = 0 : (INT) = “L” ? (INT) = “L” However, I12 = 0 TAV1 0 0 0 1 0 1 0 1 0 0 0 5 4 1 1 (A) ← (V1) – – Transfers the contents of interrupt control register V1 to register A. TV1A 0 0 0 0 1 1 1 1 1 1 0 3 F 1 1 (V1) ← (A) – – Transfers the contents of register A to interrupt control register V1. TAV2 0 0 0 1 0 1 0 1 0 1 0 5 5 1 1 (A) ← (V2) – – Transfers the contents of interrupt control register V2 to register A. TV2A 0 0 0 0 1 1 1 1 1 0 0 3 E 1 1 (V2) ← (A) – – Transfers the contents of register A to interrupt control register V2. TAI1 1 0 0 1 0 1 0 0 1 1 2 5 3 1 1 (A) ← (I1) – – Transfers the contents of interrupt control register I1 to register A. TI1A 1 0 0 0 0 1 0 1 1 1 2 1 7 1 1 (I1) ← (A) – – Transfers the contents of register A to interrupt control register I1. TAW1 1 0 0 1 0 0 1 0 1 1 2 4 B 1 1 (A) ← (W1) – – Transfers the contents of timer control register W1 to register A. TW1A 1 0 0 0 0 0 1 1 1 0 2 0 E 1 1 (W1) ← (A) – – Transfers the contents of register A to timer control register W1. TAW2 1 0 0 1 0 0 1 1 0 0 2 4 C 1 1 (A) ← (W2) – – Transfers the contents of timer control register W2 to register A. TW2A 1 0 0 0 0 0 1 1 1 1 2 0 F 1 1 (W2) ← (A) – – Transfers the contents of register A to timer control register W2. TAW3 1 0 0 1 0 0 1 1 0 1 2 4 D 1 1 (A) ← (W3) – – Transfers the contents of timer control register W3 to register A. TW3A 1 0 0 0 0 1 0 0 0 0 2 1 0 1 1 (W3) ← (A) – – Transfers the contents of register A to timer control register W3. TAW5 1 0 0 1 0 0 1 1 1 1 2 4 F 1 1 (A) ← (0, 0, W51, W50) – – Transfers the contents of timer count value store register W5 to the low-order 2 bits of register A. The contents of the high-order 2 bits of register A is set to “0.” TW5A 1 0 0 0 0 1 0 0 1 0 2 1 2 1 1 (W51, W50) ← (A1, A0) – 50 – Transfers the contents of the low-order 2 bits of register A to timer count value store register W5. 51 MITSUBISHI MICROCOMPUTERS MITSUBISHI MICROCOMPUTERS 4570 Group 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER Type of Mnemonic D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 instructions TAB1 1 0 0 1 1 1 0 0 0 0 Hexadecimal notation 2 7 0 1 1 Function (W5) ← (T19, T18) Skip condition Carry flag CY Instruction code Parameter Number of words Number of cycles MACHINE INSTRUCTIONS (CONTINUED) Detailed description – – Transfers the contents of the high-order 2 bits of timer 1 to register W5, and transfers the contents of (B) ← (T17–T14) (A) ← (T13–T10) T1AB 1 0 0 0 1 1 0 0 0 0 2 3 0 1 1 At timer 1 stop (W10=0), (R19, R18) ← (W5) the low-order 8 bits of timer 1 to registers A and B. – – When stopping (W10=0), transfers the contents of register W5 to the contents of the high-order 2 bits of timer 1 and of the timer 1 reload register, and transfers the contents of registers A and B to the contents (T19, T18) ← (W5) of the low-order 8 bits of timer 1 and of the timer 1 reload register. (R17–R14) ← (B) (T17–T14) ← (B) When operating (W10=1), transfers the contents of register W5 to the contents of the high-order 2 bits of the timer 1 reload register, and transfers the contents of registers A and B to the contents of the low- (R13–R10) ← (A) order 8 bits of the timer 1 reload register. (T13–T10) ← (A) At timer 1 operating (W10=1), (R19, R18) ← (W5) Timer operation (R17–R14) ← (B) (R13–R10) ← (A) TAB2 1 0 0 1 1 1 0 0 0 1 2 7 1 1 1 (B) ← (T27–T24) (A) ← (T23–T20) – – Transfers the contents of timer 2 to registers A and B. T2AB 1 0 0 0 1 1 0 0 0 1 2 3 1 1 1 (R27–R24) ← (B) (T27–T24) ← (B) – – Transfers the contents of registers A and B to timer 2 and timer 2 reload register. – – Transfers the contents of registers A and B to timer 2 reload register. – – Transfers the contents of timer 3 to registers A and B. – – Transfers the contents of registers A and B to timer 3 and timer 3 reload register R3L. – – Transfers the contents of registers A and B to timer 3 reload register R3H. (R23–R20) ← (A) (T23–T20) ← (A) TR2AB 1 0 0 0 1 1 1 0 1 0 2 3 A 1 1 (R27–R24) ← (B) (R23–R20) ← (A) TAB3 1 0 0 1 1 1 0 0 1 0 2 7 2 1 1 (B) ← (T37–T34) (A) ← (T33–T30) T3AB 1 0 0 0 1 1 0 0 1 0 2 3 2 1 1 (R3L7–R3L4) ← (B) (T37–T34) ← (B) (R3L3–R3L0) ← (A) (T33–T30) ← (A) T3HAB 1 0 0 0 1 1 1 1 0 1 2 3 D 1 1 (R3H7–R3H4) ← (B) (R3H3–R3H0) ← (A) 52 53 MITSUBISHI MICROCOMPUTERS MITSUBISHI MICROCOMPUTERS 4570 Group 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER Type of Mnemonic D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 instructions SNZT1 1 0 1 0 0 0 0 0 0 0 Hexadecimal notation 2 8 0 1 1 Function (T1F) = 1 ? Skip condition Carry flag CY Instruction code Parameter Number of words Number of cycles MACHINE INSTRUCTIONS (CONTINUED) (T1F) = 1 – Timer operation 1 0 1 0 0 0 0 0 0 1 2 8 1 1 1 (T2F) = 1 ? After skipping the next instruction Skips the next instruction when the contents of T1F flag is “1.” After skipping, clears T1F flag. After skipping the next instruction (T1F) ← 0 SNZT2 Detailed description (T2F) = 1 – Skips the next instruction when the contents of T2F flag is “1.” After skipping, clears T2F flag. (T3F) = 1 – Skips the next instruction when the contents of T3F flag is “1.” (T2F) ← 0 SNZT3 1 0 1 0 0 0 0 0 1 0 2 8 2 1 1 (T3F) = 1 ? After skipping, clears T3F flag. After skipping the next instruction (T3F) ← 0 IAP0 1 0 0 1 1 0 0 0 0 0 2 6 0 1 1 (A) ← (P0) – – Transfers the input of port P0 to register A. OP0A 1 0 0 0 1 0 0 0 0 0 2 2 0 1 1 (P0) ← (A) – – Outputs the contents of register A to port P0. IAP1 1 0 0 1 1 0 0 0 0 1 2 6 1 1 1 (A) ← (P1) – – Transfers the input of port P1 to register A. OP1A 1 0 0 0 1 0 0 0 0 1 2 2 1 1 1 (P1) ← (A) – – Outputs the contents of register A to port P1. IAP2 1 0 0 1 1 0 0 0 1 0 2 6 2 1 1 (A1, A0) ← (P21, P20) – – Transfers the input of port P2 to register A. Input/Output operation (A3, A2) ← 0 54 IAP3 1 0 0 1 1 0 0 0 1 1 2 6 3 1 1 (A) ← (P3) – – Transfers the input of port P3 to register A. OP3A 1 0 0 0 1 0 0 0 1 1 2 2 3 1 1 (P3) ← (A) – – Outputs the contents of register A to port P3. IAP4 1 0 0 1 1 0 0 1 0 0 2 6 4 1 1 (A) ← (P4) – – Transfers the input of port P4 to register A. CLD 0 0 0 0 0 1 0 0 0 1 0 1 1 1 1 (D) ← 1 – – Sets port D to “1.” RD 0 0 0 0 0 1 0 1 0 0 0 1 4 1 1 (D(Y)) ← 0 (Y) = 0 to 9 – – Clears a bit of port D specified by register Y to “0.” SD 0 0 0 0 0 1 0 1 0 1 0 1 5 1 1 (D(Y)) ← 1 (Y) = 0 to 9 – – Sets a bit of port D specified by register Y to “1.” TK0A 1 0 0 0 0 1 1 0 1 1 2 1 B 1 1 (K0) ← (A) – – Transfers the contents of register A to key-on wakeup control register K0. TAK0 1 0 0 1 0 1 0 1 1 0 2 5 6 1 1 (A) ← (K0) – – Transfers the contents of key-on wakeup control register K0 to register A. TPU0A 1 0 0 0 1 0 1 1 0 1 2 2 D 1 1 (PU0) ← (A) – – Transfers the contents of register A to pull-up control register PU0. TAPU0 1 0 0 1 0 1 0 1 1 1 2 5 7 1 1 (A) ← (PU0) – – Transfers the contents of pull-up control register PU0 to register A. 55 Mnemonic D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Carrier generating circuit operation instructions Hexadecimal notation 4570 Group 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER Function Skip condition Carry flag CY Type of MITSUBISHI MICROCOMPUTERS Number of words Number of cycles Instruction code Parameter MITSUBISHI MICROCOMPUTERS Detailed description TC2A 1 0 1 0 1 0 1 0 0 1 2 A 9 1 1 (C21, C20) ← (A1, A0) – – Transfers the contents of register A to carrier wave output control register C2. NOP 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 (PC) ← (PC) + 1 – – No operation POF 0 0 0 0 0 0 0 0 1 0 0 0 2 1 1 Transition to RAM back-up mode – – Puts the system in RAM back-up mode state by executing the POF instruction after executing the EPOF instruction. Other operation EPOF 0 0 0 1 0 1 1 0 1 1 0 5 B 1 1 POF instruction valid – – Validates the POF instruction which is executed after the EPOF instruction by executing the EPOF instruction. (P) = 1 – Skips the next instruction when P flag is “1.” After skipping, P flag remains unchanged. SNZP 0 0 0 0 0 0 0 0 1 1 0 0 3 1 1 (P) = 1 ? WRST 1 0 1 0 1 0 0 0 0 0 2 A 0 1 1 (WDF1) ← 0, (WEF) ← 1 – – Operates the watchdog timer and initializes the watchdog timer flag (WDF1). TABSI 1 0 0 1 1 1 1 0 0 0 2 7 8 1 1 (B) ← (SI7–SI4) (A) ← (SI3–SI0) – – Transfers the contents of general-purpose register SI to registers A and B. TSIAB 1 0 0 0 1 1 1 0 0 0 2 3 8 1 1 (SI7–SI4) ← (B) (SI3–SI0) ← (A) – – Transfers the contents of registers A and B to general-purpose register SI. TAMR 1 0 0 1 0 1 0 0 1 0 2 5 2 1 1 (A) ← (MR3–MR0) – – Transfers the contents of clock control register MR to register A. TMRA 1 0 0 0 0 1 0 1 1 0 2 1 6 1 1 (MR3–MR0) ← (A) – – Transfers the contents of register A to clock control register MR. SBK 0 0 0 1 0 0 0 0 0 1 0 4 1 1 1 When executing the TABP p instruction, – – Data area which is referred when executing the TABP p instruction is set to pages 64 to 127. This setting is valid only for the TABP p instruction. – – Data area which is referred when executing the TABP p instruction is set to pages 0 to 63. This setting is valid only for the TABP p instruction. p6 ← 1 RBK 0 0 0 1 0 0 0 0 0 0 0 4 0 1 1 When executing the TABP p instruction, p6 ← 0 If the SBK instruction is not executed, p6 when executing the TABP p instruction is “0.” 56 57 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER CONTROL REGISTERS Interrupt control register V1 V13 Timer 2 interrupt enable bit V12 Timer 1 interrupt enable bit V11 Not used V10 External 0 interrupt enable bit at reset : 00002 0 Interrupt disabled (SNZT2 instruction is valid) 1 Interrupt enabled (SNZT2 instruction is invalid) 0 1 Interrupt disabled (SNZT1 instruction is valid) Interrupt enabled (SNZT1 instruction is invalid) 0 1 0 1 Interrupt control register V2 V23 Not used V22 Not used V21 Not used V20 Timer 3 interrupt enable bit 0 1 0 1 0 1 0 1 Not used I12 Interrupt valid waveform for INT pin /return level selection bit (Note 2) I11 Not used I10 Not used R/W This bit has no function, but read/write is enabled. Interrupt disabled (SNZ0 instruction is valid) Interrupt enabled (SNZ0 instruction is invalid) at reset : 00002 Interrupt control register I1 I13 RAM back-up : 00002 at RAM back-up : 00002 R/W This bit has no function, but read/write is enabled. This bit has no function, but read/write is enabled. This bit has no function, but read/write is enabled. Interrupt disabled (SNZT3 instruction is valid) Interrupt enabled (SNZT3 instruction is invalid) at reset : 00002 at RAM back-up : state retained R/W 0 1 This bit has no function, but read/write is enabled. 0 Falling waveform (“L” level of INT pin is recognized with the SNZI0 instruction)/“L” level 1 0 1 0 Rising waveform (“H” level of INT pin is recognized with the SNZI0 instruction)/“H” level This bit has no function, but read/write is enabled. This bit has no function, but read/write is enabled. 1 Notes 1: “R” represents read enabled, and “W” represents write enabled. 2: Depending on the input state of P21/INT pin, the external interrupt request flag EXF0 may be set to “1” when the contents of I12 is changed. Accordingly, set a value to bit 2 of register I1 and execute the SNZ0 instruction to clear the EXF0 flag after executing at least one instruction. 58 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER CONTROL REGISTERS (CONTINUED) at reset : 00002 Timer control register W1 W13 Prescaler control bit W12 Prescaler dividing ratio selection bit W11 Timer 1 count source selection bit W10 Timer 1 control bit 0 Stop (prescaler state initialized) 1 0 Operating Instruction clock divided by 4 1 Instruction clock divided by 8 0 1 Prescaler output (ORCLK) Carrier output (CARRY) 0 Stop (state retained) 1 Operating at reset : 00002 Timer control register W2 W23 Timer 2 control bit W22 Port D9/TOUT pin function selection bit 0 Stop (state retained) 1 0 Operating Port D9 1 TOUT pin W21 W20 W21 Timer 2 count source selection bits W20 0 0 0 1 1 0 1 1 Timer 3 control bit W32 Not used Timer 3 count source selection bits W30 Timer count value store register W5 R/W Timer 1 underflow signal Instruction clock 16-bit timer underflow signal 0 Stop (state retained) 1 0 Operating at RAM back-up : state retained R/W This bit has no function, but read/write is enabled. 1 Count source W31 W30 W31 at RAM back-up : state retained R/W Count source Prescaler output (ORCLK) at reset : 00002 Timer control register W3 W33 at RAM back-up : 00002 0 0 0 1 Timer 2 underflow signal Prescaler output (ORCLK) 1 0 f(XIN) or f(XIN)/2 1 1 Not available at reset : 002 at RAM back-up : state retained R/W 2-bit register. The contents of the high-order 2 bits (bits 9 and 8) of the 10-bit ROM pattern at address (D 2D1D0A3A2A1A0) in page p specified by registers D and A is stored in this register W5 with the TABP p instruction. In addition, data can be transferred between the low-order 2 bits of register A and this register W5 with the TW5A or TAW5 instruction. Data can be read/written to/from the high-order 2 bits of timer 1 with the T1AB or TAB1 instruction. Note: “R” represents read enabled, and “W” represents write enabled. 59 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER CONTROL REGISTERS (CONTINUED) Carrier wave output control register C2 C21 C20 Port CARR output control bit Carrier wave output auto-control bit at reset : 002 0 K02 K01 K00 Port P43 key-on wakeup control bit Port P42 key-on wakeup control bit Port CARR “H” level output 0 Auto-control output by timer 1 is invalid 1 Auto-control output by timer 1 is valid Port P41 key-on wakeup control bit Port P40 key-on wakeup control bit at reset : 00002 Key-on wakeup not used 0 Key-on wakeup not used Key-on wakeup used 1 0 1 Pull-up control register PU0 PU03 PU02 PU01 PU00 Key-on wakeup not used Key-on wakeup used Key-on wakeup not used Key-on wakeup used at RAM back-up : state retained Port P43 pull-up transistor control bit 0 1 Pull-up transistor OFF Port P42 pull-up transistor 0 1 Pull-up transistor OFF Pull-up transistor ON 0 Pull-up transistor OFF 1 0 Pull-up transistor ON Pull-up transistor OFF 1 Pull-up transistor ON control bit Port P41 pull-up transistor control bit Port P40 and P01 pull-up transistor control bit System clock selection bit MR2 Not used MR1 Not used MR0 Not used 8-bit general purpose register PU0 at RAM back-up : state retained 0 f(XIN) 1 f(XIN)/4 0 1 This bit has no function, but read/write is enabled. 1 0 1 R/W Pull-up transistor ON at reset : 10002 0 R/W Key-on wakeup used at reset : 00002 Clock control register MR MR3 at RAM back-up : state retained 0 1 1 0 W Port CARR “L” level output 1 Key-on wakeup control register K0 K03 at RAM back-up : 002 R/W This bit has no function, but read/write is enabled. This bit has no function, but read/write is enabled. at reset : 0016 at RAM back-up : state retained R/W 8-bit general purpose register. 8-bit data can be transferred between this register PU0 and registers A and B with the TSIAB instruction and TABSI instruction. Note: “R” represents read enabled, and “W” represents write enabled. 60 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER ABSOLUTE MAXIMUM RATINGS Symbol Conditions Parameter VDD Supply voltage VI Input voltage P0, P1, P2, P3, P4, RESET, XIN, VDCE VO VO Pd Topr Tstg Output voltage P0, P1, P3, D Output transistors in cut-off state Output voltage CARR, XOUT Power dissipation Operating temperature range Storage temperature range Ratings Unit –0.3 to 7.0 V –0.3 to VDD+0.3 V –0.3 to VDD+0.3 –0.3 to VDD+0.3 V V 300 mW –20 to 70 –40 to 125 °C °C RECOMMENDED OPERATING CONDITIONS1 (Mask ROM version:Ta = –20 °C to 70 °C, VDD = 2.0 V to 5.5 V, unless otherwise noted) (One Time PROM version:Ta = –20 °C to 70 °C, VDD = 2.5 V to 5.5 V, unless otherwise noted) Symbol Parameter Mask ROM version System clock Conditions f(XIN) ≤ 4.2 MHz Ceramic resonator Limits Min. Typ. Max. 2.0 5.5 4.5 5.5 2.0 5.5 2.5 5.5 4.5 5.5 2.5 5.5 1.8 5.5 2.0 5.5 Unit =f(XIN)/4 Mask ROM version System clock VDD Supply voltage =f(XIN) f(XIN) ≤ 2.0 MHz Ceramic resonator f(XIN) ≤ 1.0 MHz Ceramic resonator V One Time PROM version System clock =f(XIN)/4 VRAM VSS f(XIN) ≤ 4.2 MHz Ceramic resonator One Time PROM version f(XIN) ≤ 2.0 MHz Ceramic resonator System clock f(XIN) ≤ 1.0 MHz =f(XIN) Ceramic resonator RAM back-up Mask ROM version RAM back-up voltage One Time PROM version Supply voltage V V V 0 Mask ROM version VDD=2.0 V to 5.5V 4.2 VDD=4.5 V to 5.5V 2.0 VDD=2.0 V to 5.5V 1.0 ( a t c e r a m i c One Time PROM version resonance) VDD=2.5 V to 5.5V System clock 4.2 System clock =f(XIN)/4 Mask ROM version f(XIN) O s c i l l a t i o n System clock =f(XIN) frequency MHz =f(XIN)/4 One Time PROM version VDD=4.5 V to 5.5V System clock VDD=2.5 V to 5.5V =f(XIN) 2.0 1.0 61 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER RECOMMENDED OPERATING CONDITIONS 2 (Mask ROM version:Ta = –20 °C to 70 °C, VDD = 2.0 V to 5.5 V, unless otherwise noted) (One Time PROM version:Ta = –20 °C to 70 °C, VDD = 2.5 V to 5.5 V, unless otherwise noted) Symbol VIH “H” level input voltage P0, P1, P2, VIH P3, P4, VDCE “H” level input voltage XIN VIH “H” level input voltage RESET VIH VIL “H” level input voltage INT “L” level input voltage P0, P1, P2, P3, Min. 0.7VDD VDD 0.85VDD 0.8VDD VDD V V VDD V P4, VDCE 0 0.3VDD V “L” level input voltage XIN ______ “L” level input voltage RESET 0 0.3VDD 0 0 0.3VDD V V 0.2VDD V VDD=5.0 V 10 VDD=3.0 V 4 VDD=5.0 V VDD=3.0 V 30 24 VDD=5.0 V 5 VDD=3.0 V “L” level average output current P3 VDD=5.0 V (Note) VDD=3.0 V 2 15 “L” level average output current P0, P1, D0–D9, CARR (Note) IOH(peak) “H” level peak output current CARR IOH(avg) “H” level average output current CARR (Note) 12 mA mA mA mA VDD=5.0 V VDD=3.0 V –30 –15 mA VDD=5.0 V –15 –7 mA 30 mA 20 mA 100 µs VDD=3.0 V Σ IOL Σ IOL “L” total current P0, P1, P3 “L” total current D TPON Power reset circuit valid power rising Mask ROM version time VDD = 0 to 2.0 V One Time PROM version VDD = 0 to 2.5 V Note: The average output current is the average current value at the 100 ms interval. 62 Unit V “L” level input voltage INT IOL(peak) “L” level peak output current P0, P1, D0–D9, CARR IOL(peak) “L” level peak output current P3 IOL(avg) Max. VDD VIL IOL(avg) Typ. 0.8VDD ______ VIL VIL Limits Conditions Parameter MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER ELECTRICAL CHARACTERISTICS (Mask ROM version:Ta = –20 °C to 70 °C, VDD = 2.0 V to 5.5 V, unless otherwise noted) (One Time PROM version:Ta = –20 °C to 70 °C, VDD = 2.5 V to 5.5 V, unless otherwise noted) Symbol Parameter Test conditions Limits Min. Typ. Max. “L” level output voltage IOL = 5 mA VDD = 5.0 V 0.9 P0, P1, D0–D9, CARR, RESET IOL = 2 mA VDD = 3.0 V VOL “L” level output voltage P3 IOL = 15 mA IOL = 12 mA VDD = 5.0 V VDD = 3.0 V 0.9 1.5 VOH “H” level output voltage CARR IOH = 15 mA VDD = 5.0 V 2.4 IOH = –7 mA VDD = 3.0 V 1.0 VOL IIH IIL IOZ IDD “H” level input current P0, P1, P2, P3, P4, RESET, VDCE 1 Output current at off-state D0–D9 Supply current at CPU operating mode VO = VDD 1 VDD = 5.0 V, f(XIN) = 4.2 MHz System clock = f(XIN)/4 1.3 2.6 VDD = 5.0 V f(XIN) = 2 MHz 1.9 3.8 System clock = f(XIN) f(XIN) = 1 MHz VDD = 3.0 V, f(XIN) = 4.2 MHz 1.3 2.6 0.6 1.2 0.5 1.0 0.4 0.1 50 0.8 10 125 250 System clock = f(XIN)/4 VDD = 3.0 V System clock = f(XIN) at RAM back-up mode Pull-up resistor RPH value P0, P1, P4 RESET INT VT+ – VT– Hysteresis f(XIN) = 1 MHz f(XIN) = 500 kHz f(XIN) = stop, typical value at Ta = 25 °C VDD = 5.0 V, VI = 0 V VDD = 3.0 V, VI = 0 V 20 40 VDD = 5.0 V, VI = 0 V 12 VDD = 3.0 V, VI = 0 V VDD = 5.0 V 25 VDD = 3.0 V VDD = 5.0 V VDD = 3.0 V Note: In this case, the pull-up transistor of port P4 is turned off by software. RESET V µA µA –1 VI = 0 V (Note) V V VI = VDD (Note) “L” level input current P2, P3, P4, RESET , VDCE 1.5 Unit 100 30 60 0.5 0.4 1.5 0.6 70 130 µA mA µA kΩ kΩ V V 63 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER BASIC TIMING DIAGRAM Machine cycle Parameter Clock Pin name State XIN (System clock=f(X IN)) XIN (System clock=f(X IN)/4) Port D output D0–D9 Port P0, P1, P3 output P00–P03 P10–P13 P30–P33 Port P0, P1, P2, P3, P4 input P00–P03 P10–P1 3 P20, P21 P30–P33 P40–P43 Interrupt input INT 64 Mi Mi+1 T3 T1 T2 T3 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER BUILT-IN PROM VERSION In addition to the mask ROM version, the 4570 Group has the programmable ROM version software compatible with mask ROM. The One Time PROM version has PROM which can only be written to and not be erased. The built-in PROM version has functions similar to those of the mask ROM version, but it has a PROM mode that enables writing to built-in PROM. Table 16 shows the product of built-in PROM version. Figure 35 shows the pin configurations of built-in PROM version. The One Time PROM version has pin-compatibility with the mask ROM version. Table 16 Product of built-in PROM version PROM size RAM size M34570E8FP (✕ 10 bits) 8192 words (✕ 4 bits) 128 words 36P2R-A M34570EDFP 16384 words 128 words 36P2R-A Product ROM type Package One Time PROM PIN CONFIGURATION (TOP VIEW) D2 1 36 D1 D3 2 D4 D5 D6 3 35 34 D0 P13 P12 D7 5 6 D9/TOUT 7 8 P20 9 P21/INT RESET CNV SS 10 11 12 M34570ExFP D8 4 33 32 31 30 29 28 27 26 25 XOUT 13 24 XIN 14 VSS 15 VDCE VDD 16 23 22 21 CARR 18 20 19 17 P11 P10 P03 P02 P01 P00 P43 P42 P41 P40 P33 P32 P31 P30 Outline 36P2R-A Fig. 35 Pin configuration of built-in PROM version 65 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER (1) PROM mode The built-in PROM version has a PROM mode in addition to a normal operation mode. The PROM mode is used to write to and read from the built-in PROM. In the PROM mode, the programming adapter can be used with a general-purpose PROM programmer to write to or read from the built-in PROM as if it were M5M27C256K. Programming adapter is listed in Table 17. Contact addresses at the end of this book for the appropriate PROM programmer. • Writing and reading of built-in PROM Programming voltage is 12.5 V. Write the program in the PROM of the built-in PROM version as shown in Figure 36. (2) Notes on handling ➀ A high-voltage is used for writing. Take care that overvoltage is not applied. Take care especially at turning on the power. ➁ For the One Time PROM version Mitsubishi Electric corp. does not perform PROM writing test and screening in the assembly process and following processes. In order to improve reliability after writing, performing writing and test according to the flow shown in Figure 37 before using is recommended. Table 17 Programming adapter Microcomputer Programming adapter PCA7425 M34570E8FP, M34570EDFP Address 0000 16 1 1 1 D4 D 3 D1 D0 Low-order 5 bits 1FFF 16 4000 16 D2 1 1 1 D4 D 3 D2 D1 D0 High-order 5 bits 5FFF 16 7FFF 16 The shaded area can be used only for M34570ED. Set “FF 16” to the shaded area. Fig. 36 PROM memory map Writing with PROM programmer Screening (Leave at 150 °C for 40 hours) (Note) Verify test with PROM programmer Function test in target device Note: Since the screening temperature is higher than storage temperature, never expose the microcomputer to 150 °C exceeding 100 hours. Fig. 37 Flow of writing and test of the product shipped in blank 66 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER GZZ-SH55-08B <91A0> Mask ROM number 4500 SERIES MASK ROM ORDER CONFIRMATION FORM SINGLE-CHIP MICROCOMPUTER M34570M4-XXXFP MITSUBISHI ELECTRIC Receipt Date: Please fill in all items marked ✻. ✻ Customer TEL ( Date issued ) Date: Issuance signature Company name Section head S u p e r v i s o r signature signature Responsible Supervisor officer ✻ 1. Confirmation Three sets of EPROMs are required for each pattern if this order is performed by EPROMs. One floppy disk is required for each pattern if this order is performed by floppy disk. Ordering by the EPROMs Specify the type of EPROMs submitted (check in the approximate box). If at least two of the three sets of EPROMs submitted contain the identical data, we will produce masks based on this data. We shall assume the responsibility for errors only if the mask ROM data on the products we produce differ from this data. Thus, the customer must be especially careful in verifying the data contained in the EPROMs submitted. Checksum code for entire EPROM area (hexadecimal notation) EPROM Type: 27C512 27C256 Low-order 5-bit data 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 High-order 5-bit data 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 000016 4.00K 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 0FFF16 400016 4.00K 4FFF16 7FFF16 Low-order 5-bit data High-order 5-bit data 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 000016 4.00K 0FFF16 400016 4.00K 4FFF16 FFFF16 Set “FF 16 ” in the shaded area. Set “111 2 ” in the area of low-order and high-order 5-bit data. 67 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER GZZ-SH55-08B <91A0> Mask ROM number 4500 SERIES MASK ROM ORDER CONFIRMATION FORM SINGLE-CHIP MICROCOMPUTER M34570M4-XXXFP MITSUBISHI ELECTRIC Ordering by floppy disk We will produce masks based on the mask files generated by the mask file generating utility. We shall assume the responsibility for errors only if the mask ROM data on the products we produce differs from this mask file. Thus, extreme care must be taken to verify the mask file in the submitted floppy disk. The submitted floppy disk must be-3.5 inch 2HD type and DOS/V format. And the number of the mask files must be 1 in one floppy disk. File code (hexadecimal notation) Mask file name .MSK (equal or less than eight characters) ✻ 2. Mark Specification Mark specification must be submitted using the correct form for the type of package being ordered. Fill out the approximate Mark Specification Form (36P2R-A for M34570M4-XXXFP) and attach to the Mask ROM Order Confirmation Form. ✻ 3. Comments 68 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER GZZ-SH55-09B <91A0> Mask ROM number 4500 SERIES MASK ROM ORDER CONFIRMATION FORM SINGLE-CHIP MICROCOMPUTER M34570M8-XXXFP MITSUBISHI ELECTRIC Receipt Date: Please fill in all items marked ✻. ✻ Customer TEL ( Date issued ) Date: Issuance signature Company name Section head S u p e r v i s o r signature signature Responsible Supervisor officer ✻ 1. Confirmation Three sets of EPROMs are required for each pattern if this order is performed by EPROMs. One floppy disk is required for each pattern if this order is performed by floppy disk. Ordering by the EPROMs Specify the type of EPROMs submitted (check in the approximate box). If at least two of the three sets of EPROMs submitted contain the identical data, we will produce masks based on this data. We shall assume the responsibility for errors only if the mask ROM data on the products we produce differ from this data. Thus, the customer must be especially careful in verifying the data contained in the EPROMs submitted. Checksum code for entire EPROM area (hexadecimal notation) EPROM Type: 27C512 27C256 Low-order 5-bit data 000016 8.00K 1234567890123456789012345 1FFF16 1234567890123456789012345 1234567890123456789012345 1234567890123456789012345 1234567890123456789012345 1234567890123456789012345 1234567890123456789012345 High-order 5-bit data 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 400016 5FFF16 1234567890123456789012345 1234567890123456789012345 1234567890123456789012345 1234567890123456789012345 1234567890123456789012345 1234567890123456789012345 1234567890123456789012345 7FFF16 Low-order 5-bit data 8.00K High-order 5-bit data 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 000016 8.00K 1FFF16 400016 8.00K 5FFF16 FFFF16 Set “FF 16 ” in the shaded area. Set “111 2 ” in the area of low-order and high-order 5-bit data. 69 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER GZZ-SH55-09B <91A0> Mask ROM number 4500 SERIES MASK ROM ORDER CONFIRMATION FORM SINGLE-CHIP MICROCOMPUTER M34570M8-XXXFP MITSUBISHI ELECTRIC Ordering by floppy disk We will produce masks based on the mask files generated by the mask file generating utility. We shall assume the responsibility for errors only if the mask ROM data on the products we produce differs from this mask file. Thus, extreme care must be taken to verify the mask file in the submitted floppy disk. The submitted floppy disk must be-3.5 inch 2HD type and DOS/V format. And the number of the mask files must be 1 in one floppy disk. File code (hexadecimal notation) Mask file name .MSK (equal or less than eight characters) ✻ 2. Mark Specification Mark specification must be submitted using the correct form for the type of package being ordered. Fill out the approximate Mark Specification Form (36P2R-A for M34570M8-XXXFP) and attach to the Mask ROM Order Confirmation Form. ✻ 3. Comments 70 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER GZZ-SH55-10B <91A0> Mask ROM number 4500 SERIES MASK ROM ORDER CONFIRMATION FORM SINGLE-CHIP MICROCOMPUTER M34570MD-XXXFP MITSUBISHI ELECTRIC Receipt Date: Please fill in all items marked ✻. ✻ Customer TEL ( Date issued ) Date: Issuance signature Company name Section head S u p e r v i s o r signature signature Responsible Supervisor officer ✻ 1. Confirmation Three sets of EPROMs are required for each pattern if this order is performed by EPROMs. One floppy disk is required for each pattern if this order is performed by floppy disk. Ordering by the EPROMs Specify the type of EPROMs submitted (check in the approximate box). If at least two of the three sets of EPROMs submitted contain the identical data, we will produce masks based on this data. We shall assume the responsibility for errors only if the mask ROM data on the products we produce differ from this data. Thus, the customer must be especially careful in verifying the data contained in the EPROMs submitted. Checksum code for entire EPROM area (hexadecimal notation) EPROM Type: 27C512 27C256 0000 16 0000 16 16.00K Low-order 5-bit data 3FFF16 4000 16 High-order 5-bit data 16.00K 3FFF16 4000 16 High-order 5-bit data 16.00K 7FFF16 Low-order 5-bit data 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 123456789012345678901234 16.00K 7FFF16 FFFF 16 Set “FF 16 ” in the shaded area. Set “111 2 ” in the area of low-order and high-order 5-bit data. 71 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER GZZ-SH55-10B <91A0> Mask ROM number 4500 SERIES MASK ROM ORDER CONFIRMATION FORM SINGLE-CHIP MICROCOMPUTER M34570MD-XXXFP MITSUBISHI ELECTRIC Ordering by floppy disk We will produce masks based on the mask files generated by the mask file generating utility. We shall assume the responsibility for errors only if the mask ROM data on the products we produce differs from this mask file. Thus, extreme care must be taken to verify the mask file in the submitted floppy disk. The submitted floppy disk must be-3.5 inch 2HD type and DOS/V format. And the number of the mask files must be 1 in one floppy disk. File code (hexadecimal notation) Mask file name .MSK (equal or less than eight characters) ✻ 2. Mark Specification Mark specification must be submitted using the correct form for the type of package being ordered. Fill out the approximate Mark Specification Form (36P2R-A for M34570MD-XXXFP) and attach to the Mask ROM Order Confirmation Form. ✻ 3. Comments 72 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER MARK SPECIFICATION FORM 36P2R-A (36-PIN SHRINK SOP) MARK SPECIFICATION FORM Mitsubishi IC catalog name Please choose one of the marking types below (A, B, C), and enter the Mitsubishi catalog name and the special mark (if needed). A. Standard Mitsubishi Mark 36 19 Mitsubishi IC catalog name Mitsubishi lot number (6-digit or 7-digit) 18 1 B. Customer’s Parts Number + Mitsubishi catalog name 36 19 Mitsubishi lot number (6-digit or 7-digit) 1 18 Customer’s Parts Number Note : The fonts and size of characters are standard Mitsubishi type. Mitsubishi IC catalog name Note1 : The mark field should be written right aligned. 2 : The fonts and size of characters are standard Mitsubishi type. 3 : Customer’s Parts Number can be up to 11 characters : Only 0 ~ 9, A ~ Z, +, –, /, (, ), &, , (periods), (commas) are usable. 4 : If the Mitsubishi logo is not required, check the box below. Mitsubishi logo is not required . , C. Special Mark Required 36 19 1 18 Note1 : If the Special Mark is to be Printed, indicate the desired layout of the mark in the left figure. The layout will be duplicated as close as possible. Mitsubishi lot number (6-digit or 7-digit) and Mask ROM number (3-digit) are always marked. 2 : If the customer’s trade mark logo must be used in the Special Mark, check the box below. Please submit a clean original of the logo. For the new special character fonts a clean font original (ideally logo drawing) must be submitted. Special logo required 3 : The standard Mitsubishi font is used for all characters except for a logo. 73 MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER PACKAGE OUTLINE 36P2R-A Plastic 36pin 450mil SSOP EIAJ Package Code SSOP36-P-450-0.80 JEDEC Code – Weight(g) 0.53 Lead Material Alloy 42 e 36 b2 E HE e1 I2 19 F Recommended Mount Pad Symbol 1 18 A A2 y b L e A1 L1 D A A1 A2 b c D E e HE L L1 y c Detail F 74 b2 e1 I2 Dimension in Millimeters Min Nom Max 2.4 – – – – 0.05 – 2.0 – 0.5 0.4 0.35 0.2 0.15 0.13 15.2 15.0 14.8 8.6 8.4 8.2 – 0.8 – 12.23 11.93 11.63 0.7 0.5 0.3 – 1.765 – 0.15 – – 0° – 10° – 0.5 – – 11.43 – – 1.27 – MITSUBISHI MICROCOMPUTERS 4570 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER Keep safety first in your circuit designs! • Mitsubishi Electric Corporation puts the maximum effort into making semiconductor products better and more reliable, but there is always the possibility that trouble may occur with them. Trouble with semiconductors may lead to personal injury, fire or property damage. Remember to give due consideration to safety when making your circuit designs, with appropriate measures such as (i) placement of substitutive, auxiliary circuits, (ii) use of non-flammable material or (iii) prevention against any malfunction or mishap. • These materials are intended as a reference to assist our customers in the selection of the Mitsubishi semiconductor product best suited to the customer’s application; they do not convey any license under any intellectual property rights, or any other rights, belonging to Mitsubishi Electric Corporation or a third party. Mitsubishi Electric Corporation assumes no responsibility for any damage, or infringement of any third-party’s rights, originating in the use of any product data, diagrams, charts or circuit application examples contained in these materials. All information contained in these materials, including product data, diagrams and charts, represent information on products at the time of publication of these materials, and are subject to change by Mitsubishi Electric Corporation without notice due to product improvements or other reasons. It is therefore recommended that customers contact Mitsubishi Electric Corporation or an authorized Mitsubishi Semiconductor product distributor for the latest product information before purchasing a product listed herein. Mitsubishi Electric Corporation semiconductors are not designed or manufactured for use in a device or system that is used under circumstances in which human life is potentially at stake. Please contact Mitsubishi Electric Corporation or an authorized Mitsubishi Semiconductor product distributor when considering the use of a product contained herein for any specific purposes, such as apparatus or systems for transportation, vehicular, medical, aerospace, nuclear, or undersea repeater use. The prior written approval of Mitsubishi Electric Corporation is necessary to reprint or reproduce in whole or in part these materials. If these products or technologies are subject to the Japanese export control restrictions, they must be exported under a license from the Japanese government and cannot be imported into a country other than the approved destination. Any diversion or reexport contrary to the export control laws and regulations of Japan and/or the country of destination is prohibited. Please contact Mitsubishi Electric Corporation or an authorized Mitsubishi Semiconductor product distributor for further details on these materials or the products contained therein. Notes regarding these materials • • • • • • © 1999 MITSUBISHI ELECTRIC CORP. New publication, effective April. 1999. Specifications subject to change without notice. REVISION DESCRIPTION LIST Rev. No. 4570 GROUP DATA SHEET Revision Description Rev. date 1.0 First Edition 971022 2.0 Main revision points are described below. 990331 •M34570MD-XXXFP and M34570EDFP (ROM expansion products [size: 16K 5 10 bits] ) added. • SBK and RBK instructions added and TABP p instruction function is expanded. (TABP p instruction: When this instruction is executed after executing the SBK instruction, pages 64 to 127 are specified. When this instruction is executed after executing the RBK instruction, pages 0 to 63 are specified. When this instruction is executed after system is released from reset and returned from the RAM back-up mode, pages 0 to 63 are specified.) • BL, BML, BLA and BMLA instructions revised. Referred pages are expanded to pages 0 to 127 (p6 can be used for page specification.) (1/1)