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M38861F3FS

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI ELECTRIC  

MITSUBISHI MICROCOMPUTERS

3886 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

(17) Ports P54,P55

Direction

register

Data bus

Port latch

Pulse output mode

Timer output

CNTR0,CNTR1 interrupt input

(19) Port P57

PWM1 output pin selection bit

PWM1 enable bit

Direction

register

Data bus

Port latch

(18) Port P56

PWM0 output pin selection bit

PWM0 enable bit

Direction

register

Data bus

Port latch

PWM01 output

(20) Port P6

D-A converter output

D-A1 output enable bit

Direction

register

Data bus

Port latch

PWM11 output

D-A converter output

D-A2 output enable bit

A-D converter input

Analog input pin selection bit

(21) Port P70

Direction

register

Data bus

Port latch

T4

T5

Serial I/O2 input

(23) Port P72

Serial I/O2 synchronization

clock selection bit

Serial I/O2 port selection bit

Direction

register

(22) Port P71

Serial IO/2 transmit completion signal

Serial I/O2 port selection bit

Direction

register

Data bus

Port latch

T4

T5

Serial I/O2 output

(24) Port P73

SRDY2 output enable bit

Direction

register

Data bus

Port latch

T4

T5

Serial I/O2 clock output

Serial I/O2

external clock input

Data bus

Port latch

T4

T5

Serial I/O2 ready output

INT21 interrupt input

T4. The input level can be switched between CMOS compatible input level and TTL level by the P7 input level selection bit of the port

control register 2 (address 002F16).

T5. The input level can be switched between CMOS compatible input level and TTL level by the P7 input level selection bit of the port

control register 2 (address 002F16).

The port P8 direction register and port P7 input register can be switched by the P8 function selection bit of the port control register 2

(address 002F16).

Fig. 12 Port block diagram (3)

16

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