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PCA9558 Datasheet(PDF) 2 Page - NXP Semiconductors

Part No. 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
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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PCA9558 Datasheet(HTML) 2 Page - NXP Semiconductors

 
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Philips Semiconductors
Product data
PCA9558
8-bit I2C and SMBus I/O port with 5-bit multiplexed/1-bit
latched 6-bit I2C EEPROM and 2 k bit EEPROM
2
2002 May 24
853-2235 28310
FEATURES
5-bit 2-to-1 multiplexer, 1-bit latch
6-bit MUX_OUTx and NON_MUXED_OUT EEPROM
programmable and readable via I2C-bus
5 V tolerant open drain MUX_OUTx and NON_MUXED_OUT
outputs
Active-LOW override input forces all MUX_OUTx outputs to logic 0
I2C readable MUX_INx inputs
5 V tolerant open drain I/Ox pins, power-up default as outputs
1 address pin, allowing up to 2 devices on the I2C-bus
Active-LOW reset input with internal pull-up for the 8 I/O pins
2048-bit EEPROM programmable and readable via the I2C or I/Os
Operating power supply voltage range of 3.0 V – 3.6 V
SMBus compliance with fixed 3.3 V levels
2.5 V – 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
DESCRIPTION
The PCA9558 is a highly integrated, multi-function device that is
composed of a 5-bit multiplexed/1-bit latched 6-bit I2C/SMBus
EEPROM, an 8-bit I/O expander and a 2K 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 — used to select digital information
between a set of 5-bits of default hardware inputs and an alternative
set of inputs provided by the I2C/SMBus interface and 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
I2C/SMBus without having to power down the 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 I2C/SMBus or can be stored in the internal
EEPROM.
2K 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 I2C/SMBus
when required.
The PCA9558 has 1 address pin allowing up to 2 devices to be
placed on the same I2C bus or SMBus.
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
17
18
19
20
21
22
23
24
25
26
27
28
SCL
SDA
I/O_OUT_LOW
A0
MUX_INA
MUX_INB
MUX_INC
MUX_IND
MUX_INE
GND
I/O0
VDD
WP
MUX_OUT_LOW
NON_MUXED_OUT
MUX_OUTA
MUX_OUTB
MUX_OUTC
MUX_OUTE
MUX_OUTD
MUX_SELECT
I/O7
I/O6
I/O1
13
16 I/O5
I/O2
14
15 I/O4
I/O3
SW00614
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
ORDER CODE
DRAWING NUMBER
28-Pin Plastic TSSOP
0 to +70
°C
PCA9558PW
SOT361-1
Standard packing quantities and other packaging data is available at www.philipslogic.com/packaging.


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