M38B53M4-059FP datasheet(33/355 Pages) MITSUBISHI

33 / 355 page

38B5 Group User’s Manual

1-17

HARDWARE

FUNCTIONAL DESCRIPTION

Fig. 11 Port block diagram (1)

(2) Ports P1, P3

(3) Port P20

(4) Port P43

(6) Port P44

(7) Ports P45, P46

* High-breakdown-voltage P-channel transistor

Notes 1: The dimmer signal sets the Toff timing.

2: A pull-down resistor is not built in to ports P2 and P8.

3: In the mask option type P, the hysteresis circuit of

part is not built-in.

VEE

Timer 1 output bit

Timer 3 output bit

Timer 1 output

Timer 3 output

Dimmer signal (Note 1)

read

Buzzer control signal

Buzzer signal output

Timer 6 output selection bit

Timer 6 output

INT0

,INT1,INT3 interrupt input

CNTR1 input

Timer 4 external clock input

(1) Ports P0, P21–P27, P80–P83

Data bus

Local data

bus

Port latch

Dimmer signal (Note 1)

FLD/Port

switch register

Direction register

read

VEE

(Note 2)

VEE

FLD/Port

switch register

Port latch

Direction register

Data bus

Local data

bus

(Note 2)

Data bus

Local data

bus

Port latch

Dimmer signal (Note 1)

(5-1) Ports P40–P42, P60

Port latch

Direction register

Data bus

Buzzer control signal

Buzzer signal output

Port latch

Direction register

Data bus

Port latch

Direction register

Data bus

Port latch

Direction register

Data bus

(Note 3)

(5-2) Ports P42, P60 (in mask option type P)

Port latch

Direction register

Data bus

M38B53M4-059FP Datasheet(PDF) 33 Page - Mitsubishi Electric Semiconductor

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