PCF8570P データシートの表示（PDF） - Philips Electronics

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PCF8570P

256 × 8-bit static low-voltage RAM with I2C-bus interface

Philips Electronics 

Philips Semiconductors

256 × 8-bit static low-voltage RAM with

I2C-bus interface

6 BLOCK DIAGRAM

Product specification

PCF8570

handbook, full pagewidth

1

A0

2

A1

3

A2

6

SCL

5

SDA

PCF8570

INPUT

FILTER

WORD

ADDRESS

REGISTER 7

I2C BUS

CONTROL

ROW

SELECT

MEMORY

CELL

ARRAY

COLUMN

SELECT

MULTIPLEXER

8

VDD

4

VSS

7

TEST

POWER

ON

RESET

SHIFT

8

REGISTER

R/W

CONTROL

MLB928

Fig.1 Block diagram.

7 PINNING

SYMBOL

A0

A1

A2

VSS

SDA

SCL

TEST

VDD

PIN

DESCRIPTION

1

hardware address input 0

2

hardware address input 1

3

hardware address input 2

page

A0 1

8 VDD

4

negative supply

5

serial data input/output

6

serial clock input

7

Input for power-saving mode (see section

A1 2

A2 3

VSS 4

PCF8570

7 TEST

6 SCL

5 SDA

“Power-saving mode”). Also used as a test output

MLB929

during manufacture. TEST should be tied to VSS

during normal operation.

8

positive supply

Fig.2 Pin configuration.

1999 Jan 06

4

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