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PCF8570 Datasheet(PDF) 4 Page - NXP Semiconductors

Part # PCF8570
Description  256 x 8-bit static low-voltage RAM with I2C-bus interface
PDF  20 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

PCF8570 Datasheet(HTML) 4 Page - NXP Semiconductors

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1999 Jan 06
4
Philips Semiconductors
Product specification
256
× 8-bit static low-voltage RAM with
I2C-bus interface
PCF8570
6
BLOCK DIAGRAM
Fig.1 Block diagram.
handbook, full pagewidth
MLB928
WORD
ADDRESS
REGISTER
SHIFT
REGISTER
POWER
ON
RESET
INPUT
FILTER
ROW
SELECT
MEMORY
CELL
ARRAY
COLUMN
SELECT
MULTIPLEXER
R/W
CONTROL
I C BUS
CONTROL
2
6
5
SCL
SDA
3
A2
2
A1
1
A0
8
VDD
4
VSS
7
TEST
PCF8570
7
8
7
PINNING
SYMBOL
PIN
DESCRIPTION
A0
1
hardware address input 0
A1
2
hardware address input 1
A2
3
hardware address input 2
VSS
4
negative supply
SDA
5
serial data input/output
SCL
6
serial clock input
TEST
7
Input for power-saving mode (see section
“Power-saving mode”). Also used as a test output
during manufacture. TEST should be tied to VSS
during normal operation.
VDD
8
positive supply
Fig.2 Pin configuration.
page
1
2
3
4
8
7
6
5
MLB929
PCF8570
SCL
SDA
A2
A1
A0
VDD
VSS
TEST



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