PCA9558 PHILIPS [NXP Semiconductors], PCA9558 Datasheet - Page 3

• Manufacturer Part Number: PCA9558
• Description: 8-bit I2C and SMBus I/O port with 5-bit multiplexed/1-bit latched 6-bit I2C EEPROM and 2 k bit EEPROM
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
PIN DESCRIPTION
2002 May 24
8-bit I
latched 6-bit I
PIN NUMBER
11–18
20–24
5–9
10
19
25
26
27
28
1
2
3
4
2
C and SMBus I/O port with 5-bit multiplexed/1-bit
NON_MUXED_OUT
MUX_OUT_LOW
MUX_OUT E–A
I/O_OUT_LOW
MUX_SELECT
MUX_IN A–E
2
SYMBOL
C EEPROM and 2 k bit EEPROM
I/O[0–7]
GND
SCL
SDA
V
WP
A0
DD
Serial I
Serial bi-directional I
Active-LOW control forces all GPIO to logic 0 outputs
A0 Address
External inputs to multiplexer
Ground
General purpose Input/Output 0 through 7 (open drain outputs)
Active-LOW Select of MUX_IN inputs or EEPROM contents for MUX_OUT outputs
Open drain multiplexed outputs
Open drain outputs from non-volatile memory
Active-LOW control forces all MUX outputs to logic 0
Active-HIGH EEPROM write protect
Power supply : +3.0 to +3.6 V
2
C bus clock
2
C bus data
3
FUNCTION
PCA9558
Product data