pca9558pw NXP Semiconductors, pca9558pw Datasheet - Page 2

• 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
FEATURES
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DESCRIPTION
The PCA9558 is a highly integrated, multi-function device that is
composed of a 5-bit multiplexed/1-bit latched 6-bit I
EEPROM DIP switch, an 8-bit I/O expander and a 2-kbit serial
EEPROM with write protect. The PCA9558 integrates these
commonly used components into a single chip to reduce component
count and board space requirements and is useful in computer,
server and telecom/networking applications.
Multiplexed/latched EEPROM DIP switch — used to select digital
information between a set of 5-bits of default hardware inputs and
ORDERING INFORMATION
Standard packing quantities and other packaging data is available at www.philipslogic.com/packaging.
2003 Jun 27
5-bit 2-to-1 multiplexer, 1-bit latch DIP switch
6-bit MUX_OUTx and NON_MUXED_OUT EEPROM
programmable and readable via I
5 V tolerant open drain MUX_OUTx and NON_MUXED_OUT
outputs
Active-LOW override input forces all MUX_OUTx outputs to logic 0
I
5 V tolerant open drain I/Ox pins, power-up default as outputs
1 address pin, allowing up to 2 devices on the I
Active-LOW reset input with internal pull-up for the 8 I/O pins
2048-bit EEPROM programmable and readable via the I
Operating power supply voltage range of 3.0 V to 3.6 V
SMBus compliance with fixed 3.3 V levels
2.5 V to 5 V tolerant inputs
ESD protection exceeds 2000 V HBM per JESD22-A114,
200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101
Latch-up testing is done to JESDEC Standard JESD78 which
exceeds 100 mA
8-bit I
latched 6-bit I
2
28-Pin Plastic TSSOP
C readable MUX_INx inputs
PACKAGES
2
C and SMBus I/O port with 5-bit multiplexed/1-bit
2
C EEPROM DIP switch and 2-kbit EEPROM
TEMPERATURE RANGE
2
C-bus
0 to +70 °C
2
C-bus
2
C/SMBus
2
C or I/Os
ORDER CODE
PCA9558PW
2
an alternative set of inputs provided by the I
stored in the EEPROM. Examples of this type of selection include
processor voltage configuration or processor vendor identification
(VID). The multiplexed/latched EEPROM can also be used to
replace DIP switches or jumpers, since the settings can be easily
changed via I
equipment to open the cabinet. The non-volatile memory retains the
most current setting selected before the power is turned off.
8-bit I/O expander — used to control, monitor or collect remote
information or power LEDs. Monitored or collected information can
be read through the I
EEPROM.
2-kbit serial EEPROM — used to store information such as card
identification or revision/maintenance history on every
motherboard/linecard and can be read or written via I
when required.
The PCA9558 has 1 address pin allowing up to 2 devices to be
placed on the same I
PIN CONFIGURATION
I/O_OUT_LOW
2
C/SMBus without having to power down the
TOPSIDE MARK
MUX_INA
MUX_INB
MUX_INC
MUX_IND
MUX_INE
PCA9558DH
Figure 1. Pin configuration
GND
SDA
I/O0
I/O1
I/O2
I/O3
SCL
2
2
A0
C/SMBus or can be stored in the internal
C-bus or SMBus.
10
11
12
13
14
1
2
3
4
5
6
7
8
9
SW00614
28
27
26
25
24
23
22
21
20
19
18
17
16 I/O5
15 I/O4
DRAWING NUMBER
2
V
WP
MUX_OUT_LOW
NON_MUXED_OUT
MUX_OUTA
MUX_OUTB
MUX_OUTC
MUX_OUTD
MUX_OUTE
MUX_SELECT
I/O7
I/O6
C/SMBus interface and
DD
SOT361-1
PCA9558
2
C/SMBus
Product data