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PCA9537 Datasheet(PDF) 3 Page - NXP Semiconductors

Part No. PCA9537
Description  4-bit I2C and SMBus low power I/O port with interrupt and reset
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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PCA9537 Datasheet(HTML) 3 Page - NXP Semiconductors

 
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Philips Semiconductors
Product data sheet
PCA9537
4-bit I2C and SMBus low power I/O port
with interrupt and reset
2004 Nov 29
3
PIN CONFIGURATION
1
2
3
4
56
7
8
9
10
SW02182
I/O0
I/O1
I/O2
I/O3
VSS
VDD
SDA
SCL
INT
RESET
Figure 1. Pin configuration
PIN DESCRIPTION
PIN
NUMBER
SYMBOL
FUNCTION
1–4
I/O0–3
I/O0 to I/O3
5
VSS
Supply ground
6
RESET
Active LOW reset input
7
INT
Interrupt output (open drain)
8
SCL
Serial clock line
9
SDA
Serial data line
10
VDD
Supply voltage
BLOCK DIAGRAM
POWER-ON
RESET
INPUT
FILTER
I2C/SMBUS
CONTROL
INPUT/
OUTPUT
PORTS
WRITE pulse
READ pulse
SCL
SDA
VDD
VSS
4-BIT
I/O0
I/O1
I/O2
I/O3
SW02183
NOTE: ALL I/Os ARE SET TO INPUTS AT RESET
VCC
INT
LP
FILTER
RESET
PCA9537
Figure 2. Block diagram


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