M37512F8HHP datasheet(11/87 Pages) RENESAS

Part #	M37512F8HHP

Description	SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

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Manufacturer	RENESAS [Renesas Technology Corp]

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11 / 87 page

Feb 18, 2005

page 11 of 85

REJ03B0122-0101

7512 Group

Port P0

Port P1

Port P2

Port P3

Port P4

Input/output,

individual bits

CMOS compatible input level

CMOS 3-state output

CMOS compatible input level

N-channel open-drain output

CMOS compatible input level

CMOS 3-state output

CMOS compatible input level

CMOS/SMBUS input level

(when selecting I2C-BUS

interface function)

N-channel open-drain output

CMOS compatible input level

CMOS 3-state output

CMOS compatible input level

N-channel open-drain output

CMOS compatible input level

CMOS 3-state output

Table 5 I/O port function

I/O PORTS

The I/O ports have direction registers which determine the input/

output direction of each individual pin. Each bit in a direction reg-

ister corresponds to one pin, and each pin can be set to be input

port or output port.

When “0” is written to the bit corresponding to a pin, that pin be-

comes an input pin. When “1” is written to that bit, that pin

becomes an output pin.

P00/SIN2

P01/SOUT2

P02/SCLK2

__________

P03/SRDY2

P04/AN8

P05/AN9

P06/CFETCNT/AN10

P07/AN11/PWM1

P10–P17

P20/XCOUT

P21/XCIN

P22/SDA1

P23/SCL1

P24/SDA2/RxD

P25/SCL2/TxD

P26/SCLK

P27/CNTR0/

__________

SRDY1

P30/AN0–

P35/AN5

P40/CNTR1

P41/INT0

P42/INT1

P43/INT2/SCMP2

P44/INT3/PWM0

P45/DFETCNT

Serial I/O2 control register

AD control register

MISRG2

AD control register, MISRG2

Charge over current detect

control register

AD control register, MISRG2

PWM control register

CPU mode register

MISRG2

I2C control register

Serial I/O1 control register

Timer XY mode register

AD control register

MISRG2

Timer XY mode register

Interrupt edge selection

register 1

Interrupt edge selection

register 2

Serial I/O2 control register

Interrupt edge selection

register 2

PWM control register

Short current detect control

register

Over current detect control

register

Wake up current detect

control register

Serial I/O2 function I/O

A/D conversion input

Over current detector

output

A/D conversion input

PWM output

Sub-clock generating

circuit

I2C-BUS interface

function I/O

I2C-BUS interface

function I/O

Serial I/O1 function I/O

Timer X function I/O

A/D conversion input

Timer Y function I/O

External interrupt input

SCMP2 output

External interrupt input

PWM output

Over current detector

output

If data is read from a pin which is set to output, the value of the

port output latch is read, not the value of the pin itself. Pins set to

input are floating. If a pin set to input is written to, only the port

output latch is written to and the pin remains floating.

Name

Input/Output

I/O Structure

Non-Port Function

Related SFRs

Ref.No.

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

(11)

(12)

(13)

(14)

(15)

(16)

(17)

(6)

(18)

(19)

(20)

(21)

(22)

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