PCA9558 PHILIPS [NXP Semiconductors], PCA9558 Datasheet - Page 4

• 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
BLOCK DIAGRAM
2002 May 24
WRITE PROTECT
MUX_OUT_LOW
I/O_OUT_LOW
MUX SELECT
MUX_IN
8-bit I
latched 6-bit I
SCL
SDA
V
GND
DD
A0
2
C and SMBus I/O port with 5-bit multiplexed/1-bit
PCA9558
FILTER
POWER-ON
INPUT
2
RESET
C EEPROM and 2 k bit EEPROM
5
INTERFACE
LOGIC
I
2
256 BYTE
EEPROM
C
5
6-BIT EEPROM
CONTROL
LOGIC
I
2
C
4
MULTIPLEXER
GPIO
2 TO 1
5-BIT
1
0
LATCH
8
PCA9558
NON_MUXED_OUT
MUX_OUTA
MUX_OUTB
MUX_OUTC
MUX_OUTD
MUX_OUTE
I/O0–7
SW00633
Product data