pca9558pw NXP Semiconductors, pca9558pw Datasheet - Page 4

• Manufacturer Part Number: pca9558pw
• 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: NXP Semiconductors

Philips Semiconductors
BLOCK DIAGRAM
2003 Jun 27
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 DIP switch and 2-kbit EEPROM
5
INTERFACE
LOGIC
I
2
256 BYTE
EEPROM
C
Figure 2. Block diagram
5
6-BIT EEPROM
CONTROL
LOGIC
I
2
C
4
MULTIPLEXER
GPIO
2 TO 1
5-BIT
1
0
LATCH
NMO
8
PCA9558
NON_MUXED_OUT
MUX_OUTA
MUX_OUTB
MUX_OUTC
MUX_OUTD
MUX_OUTE
I/O0-7
SW00633
Product data