H8SLASH3003 datasheet(256/715 Pages) RENESAS

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Table 9-1 Port Functions

Port

Description

Pins

Mode 1

Mode 2

Mode 3

Mode 4

Port 4

8-bit I/O port

P47 to P40/D7 to D0

Data bus (D7 to D0) and 8-bit generic

Input pull-up

input/output

8-bit bus mode: generic input/output

16-bit bus mode: data bus

Port 5

4-bit I/O port

P57 to P54/A23 to A20

Generic input/

Address output

Input pull-up

output

Can drive LEDs

Port 6

3-bit I/O port

P62/BACK

Bus control signal input/output (

BACK,

P61/BREQ

BREQ, WAIT) and 3-bit generic

P60/WAIT

input/output

Port 7

8-bit input port

P77 to P70/AN7 to AN0

Analog input (AN7 to AN0) to A/D

converter, and 8-bit generic input

Port 8

P84/CS0

DDR = 0: generic input

DDR = 1 (reset value): CS0 output

P83/CS1/IRQ3

IRQ3 to IRQ1 input, CS1 to CS3 output,

P82/CS2/IRQ2

and generic input

P81/CS3/IRQ1

DDR = 0 (reset value): generic input

DDR = 1: CS1 to CS3 output

P80/RFSH/IRQ0

IRQ0 input, RFSH output, and generic

input/output

Port 9

6-bit I/O port

P95/SCK1/IRQ5

Input and output (SCK1, SCK0, RxD1,

P94/SCK0/IRQ4

RxD0, TxD1, TxD0) for serial

P93/RxD1

communication interfaces 1 and 0

P92/RxD0

(SCI1/0), IRQ5 and IRQ4 input, and

P91/TxD1

6-bit generic input/output

P90/TxD0

5-bit I/O port

P82 to P80 have

Schmitt inputs

238

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