7733 datasheet(809/940 Pages) RENESAS

809 / 940 page

OVERVIEW

7736 Group User’s Manual

1–5

Table 1.3.2 Pin description (2)

Functions

I/O

Name

Processor

mode

––

I/O port P0

I/O port P2

Same as the 7733 Group.

Address’s low-order 8 bits (A0–A7) are output.

____

These pins respectively output signals CS0–CS4, RSMP,

and address’s high-order 2 bits (A16 and A17).

q Signals CS0–CS4

These signals are the chip select signals.

When the microcomputer accesses a certain

area, the corresponding pin outputs “L” level.

(Refer to Table 2.5.4.)

_____

q Signal RSMP

This signal is the ready sampling signal and

________

is used to generate signal RDY for accessing

external memory area.

Same as the 7733 Group.

Input/Output of data (D0–D7) and output of

address’s high-order 8 bits (A16–A23) are

performed with the time sharing method.

Input/Output of data (D0–D7) and output of

address’s low-order 8 bits (A0–A7) are performed

with the time sharing method.

P00–P07

A0–A7

CS0–CS4,

_____

RSMP,

A16, A17

P20–P27

A16/D0–

A23/D7

A0/D0–

A7/D7

Single-chip mode

Memory expansion

or Microprocessor

mode

Single-chip mode

Memory expansion

or Microprocessor

mode

I/O

Output

I/O

Output

External

bus mode

1.3 Pin description

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