SA9205 datasheet(5/14 Pages) SAMES

5 / 14 page

SA9203/5

sames

5/14

Type Designation

Description

18,52

VDD

+5V Supply Input

1,35

VSS

0V ground Reference

61..68

I/O

AD0..AD7

3-state address/data lines that interface with the CPU

lower 8-bit address/data bus. The 8-bit address is

latched into the SA9203 internal address latch on the

falling edge of ALE.

The 8-bit data is respectively

written into and read out of the SA9203 on WR and RD

signals.

N/C

Not connected.

Active low input signal used to select the device.

ALE

This control signal latches the address on the AD0..7

lines on the falling edge of ALE.

Input low on this line enables the data bus buffers.

Input low on this line causes the data on the address/

data bus to be written to the I/O ports and, control

registers.

INT

If enabled via A.6, this output will be set (active edge

polarity programmed by D6 and output polarity

programmed via D7 of the Port B-F direction control

RST

Input low on this line resets the chip and all internal

registers and all ports to input mode (The register

contents after a reset pulse will be described later).

STB

Input data on PORT A pins will be latched when STB is

active and transparent otherwise (polarity programmed

by D5 of the Port B-F direction control register)

10..17

I/O

PA0..PA7

8 general purpose I/O pins comprising PORT A. This

port supports individual input or latched output

configuration of each pin. In addition,each pin of PORT

A selected as an input can be programmed to be

latched or transparent.

19..26

I/O

PB0..PB7

8 general purpose I/O pins comprising PORT B. All 8

pins are programmed to be either latched outputs or

transparent inputs.

27..34

I/O

PC0..PC7

Identical to PORT B

36..43

I/O

PD0..PD7

Identical to PORT B

44..51

I/O

PE0..PE7

Identical to PORT B

53..60

I/O

PF0..PF7

Identical to PORT B

PIN DESCRIPTION for SA9203

SA9205 bảng dữ liệu(PDF) 5 Page - Sames

SA9205 bảng dữ liệu(HTML) 5 Page - Sames

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14

bảng dữ liệu tải về

Link URL