PCF8570 View Datasheet(PDF) - Philips Electronics
Part Name
Description
MFG CO.
'PCF8570' PDF : 20 Pages View PDF
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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