PCF8570P PHILIPS [NXP Semiconductors], PCF8570P Datasheet - Page 4

• Manufacturer Part Number: PCF8570P
• Description: 256 x 8-bit static low-voltage RAM with I2C-bus interface
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
6
7
1999 Jan 06
handbook, full pagewidth
A0
A1
A2
V
SDA
SCL
TEST
V
SS
DD
256
I
SYMBOL
2
BLOCK DIAGRAM
PINNING
C-bus interface
8-bit static low-voltage RAM with
TEST
SDA
SCL
V DD
V SS
A0
A1
A2
PIN
1
2
3
4
5
6
7
8
1
2
3
6
5
8
4
7
hardware address input 0
hardware address input 1
hardware address input 2
negative supply
serial data input/output
serial clock input
Input for power-saving mode (see section
“Power-saving mode”). Also used as a test output
during manufacture. TEST should be tied to V
during normal operation.
positive supply
PCF8570
FILTER
INPUT
POWER
RESET
ON
DESCRIPTION
REGISTER
REGISTER
CONTROL
ADDRESS
I C BUS
2
WORD
SHIFT
Fig.1 Block diagram.
7
4
8
COLUMN
SS
SELECT
SELECT
ROW
page
MULTIPLEXER
V SS
A0
A1
A2
CONTROL
Fig.2 Pin configuration.
MEMORY
ARRAY
CELL
R/W
1
2
3
4
PCF8570
Product specification
MLB928
MLB929
PCF8570
7
6
5
8
V DD
TEST
SCL
SDA