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M38B57M6-126FP

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Mitsumi 

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MITSUBISHI MICROCOMPUTERS

38B5 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Table 4 List of I/O Port Functions (1)

Pin

P00/FLD8–

P07/FLD15

Name

Port P0

P10/FLD16– Port P1

P17/FLD23

P20/BUZ02/ Port P2

FLD0

P21/FLD1–

P27/FLD7

P30/FLD24– Port P3

P37/FLD31

P40/INT0,

P41/INT1,

P42/INT3

P43/BUZ01

P44/PWM1

P45/T1OUT

P46/T3OUT

P47/INT2

Port P4

P50/SIN1 Port P5

P51/SOUT1,

P52/SCLK11,

P53/SCLK12

P54/RXD,

P55/TXD,

P56/SCLK21

________

P57/SRDY2/

SCLK22

P60/CNTR1 Port P6

P61/CNTR0/

CNTR2

________

P62/SRDY1/

AN8

P63/AN9

P64/INT4/

SBUSY1/AN10

P65/SSTB1/

AN11

P70/AN0–

P77/AN7

Port P7

Input/Output

Input/output,

individual bits

Output

Input/output,

individual bits

Output

Input/output,

individual bits

Input

Input/output,

individual bits

I/O Format

Non-Port Function

Related SFRs

Ref.No.

CMOS compatible input level FLD automatic display function FLDC mode register

(1)

High-breakdown voltage P-

Port P0FLD/port switch register

channel open-drain output

with pull-down resistor

High-breakdown voltage P-

FLDC mode register

(2)

channel open-drain output

with pull-down resistor

Low-voltage input level

Buzzer output (P20)

High-breakdown voltage P-

FLDC mode register

(3)

Port P2FLD/port switch register

channel open-drain output

Buzzer output control register (1)

High-breakdown voltage P-

channel open-drain output

with pull-down resistor

CMOS compatible input level External interrupt input

N-channel open-drain output

FLDC mode register

(2)

Interrupt edge selection register (4)

Buzzer output

PWM output

Timer output

Timer output

CMOS compatible input level External interrput input

CMOS compatible input level Serial I/O1 function I/O

CMOS 3-state output

Buzzer output control register (5)

Timer 56 mode register

(6)

Timer 12 mode register

(7)

Timer 34 mode register

(7)

Interrupt edge selection register (8)

Interrupt interval determination

control register

Serial I/O1 control register 1, 2

(9)

(10)

Serial I/O2 function I/O

CMOS compatible input level External count I/O

N-channel open-drain output

CMOS compatible input level

CMOS 3-state output

Serial I/O1 function I/O

A-D conversion input

A-D conversion input

Serial I/O1 function I/O

A-D conversion input

External interrupt input

Serial I/O1 function I/O

A-D conversion input

A-D conversion input

Serial I/O2 control register (9)

UART control register

(10)

(11)

Interrupt edge selection register (4)

(12)

Serial I/O1 control register 1, 2

(13)

A-D control register

A-D control register

(14)

Serial I/O1 control register 1, 2 (15)

A-D control register

Interrupt edge selection register

Serial I/O1 control register 1, 2

(16)

A-D control register

A-D control register

(14)

11

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