PCA9501

8-bit I2C and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins

DESCRIPTION ThePCA9501isan8-bitI/Oexpanderwithanon-board2-kbitEEPROM. TheI/OexpandableeightquasibidirectionaldatapinscanbeindependentlyassignedasinputsoroutputstomonitorboardlevelstatusoractivateindicatordevicessuchasLEDs.ThesystemmasterwritestotheI/O

PCA9501BS

8-bit I2C and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins

DESCRIPTION ThePCA9501isan8-bitI/Oexpanderwithanon-board2-kbitEEPROM. TheI/OexpandableeightquasibidirectionaldatapinscanbeindependentlyassignedasinputsoroutputstomonitorboardlevelstatusoractivateindicatordevicessuchasLEDs.ThesystemmasterwritestotheI/O

PCA9501BS

8-bit I2C-bus and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins; 8 general purpose input/output expander/collector\nReplacement for PCF8574 with integrated 2-kbit EEPROM\nInternal 256 x 8 EEPROM\nSelf timed write cycle (5 ms typical)\n16 byte page write operation\nI²C-bus and SMBus interface logic\nInternal power-on reset\nNoise filter on SCL/SDA inputs\nActive LOW interrupt output\n6 address pins allowing up to 64 devices on the I²C-bus/SMBus\nNo glitch on power-up\nSupports hot insertion\nPower-up with all channels configured as inputs\nLow standby current\nOperating power supply voltage range of 2.5 V to 3.6 V\n5 V tolerant inputs/outputs\n0 Hz to 400 kHz clock frequency\nESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101\nLatch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA\nPackages offered: SO20, TSSOP20, HVQFN20\n;

The PCA9501 is an 8-bit I/O expander with an on-board 2-kbit EEPROM.\nThe I/O expandable eight quasi-bidirectional data pins can be independently assigned as inputs or outputs to monitor board level status or activate indicator devices such as LEDs. The system master writes to the I/O configuration bits in the same way as for the PCF8574. The data for each input or output is kept in the corresponding input or output register. The system master can read all registers.\nThe EEPROM can be used to store error codes or board manufacturing data for read-back by application software for diagnostic purposes and are included in the I/O expander package.\nThe PCA9501 active LOW open-drain interrupt output is activated when any input state differs from its corresponding input port register state. It is used to indicate to the system master that an input state has changed and the device needs to be interrogated.\nThe PCA9501 has six address pins with internal pull-up resistors allowing up to 64 devices to share the common two-wire I²C-bus software protocol serial data bus. The fixed GPIO address starts with '0' and the fixed EEPROM I²C-bus address starts with '1', so the PCA9501 appears as two separate devices to the bus master.\nThe PCA9501 supports hot insertion to facilitate usage in removable cards on backplane systems.\n

PCA9501D

8-bit I2C-bus and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins; 8 general purpose input/output expander/collector\nReplacement for PCF8574 with integrated 2-kbit EEPROM\nInternal 256 x 8 EEPROM\nSelf timed write cycle (5 ms typical)\n16 byte page write operation\nI²C-bus and SMBus interface logic\nInternal power-on reset\nNoise filter on SCL/SDA inputs\nActive LOW interrupt output\n6 address pins allowing up to 64 devices on the I²C-bus/SMBus\nNo glitch on power-up\nSupports hot insertion\nPower-up with all channels configured as inputs\nLow standby current\nOperating power supply voltage range of 2.5 V to 3.6 V\n5 V tolerant inputs/outputs\n0 Hz to 400 kHz clock frequency\nESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101\nLatch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA\nPackages offered: SO20, TSSOP20, HVQFN20\n;

The PCA9501 is an 8-bit I/O expander with an on-board 2-kbit EEPROM.\nThe I/O expandable eight quasi-bidirectional data pins can be independently assigned as inputs or outputs to monitor board level status or activate indicator devices such as LEDs. The system master writes to the I/O configuration bits in the same way as for the PCF8574. The data for each input or output is kept in the corresponding input or output register. The system master can read all registers.\nThe EEPROM can be used to store error codes or board manufacturing data for read-back by application software for diagnostic purposes and are included in the I/O expander package.\nThe PCA9501 active LOW open-drain interrupt output is activated when any input state differs from its corresponding input port register state. It is used to indicate to the system master that an input state has changed and the device needs to be interrogated.\nThe PCA9501 has six address pins with internal pull-up resistors allowing up to 64 devices to share the common two-wire I²C-bus software protocol serial data bus. The fixed GPIO address starts with '0' and the fixed EEPROM I²C-bus address starts with '1', so the PCA9501 appears as two separate devices to the bus master.\nThe PCA9501 supports hot insertion to facilitate usage in removable cards on backplane systems.\n

PCA9501D

8-bit I2C and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins

DESCRIPTION ThePCA9501isan8-bitI/Oexpanderwithanon-board2-kbitEEPROM. TheI/OexpandableeightquasibidirectionaldatapinscanbeindependentlyassignedasinputsoroutputstomonitorboardlevelstatusoractivateindicatordevicessuchasLEDs.ThesystemmasterwritestotheI/O

PCA9501PW

8-bit I2C and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins

DESCRIPTION ThePCA9501isan8-bitI/Oexpanderwithanon-board2-kbitEEPROM. TheI/OexpandableeightquasibidirectionaldatapinscanbeindependentlyassignedasinputsoroutputstomonitorboardlevelstatusoractivateindicatordevicessuchasLEDs.ThesystemmasterwritestotheI/O

PCA9501PW

8-bit I2C-bus and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins; 8 general purpose input/output expander/collector\nReplacement for PCF8574 with integrated 2-kbit EEPROM\nInternal 256 x 8 EEPROM\nSelf timed write cycle (5 ms typical)\n16 byte page write operation\nI²C-bus and SMBus interface logic\nInternal power-on reset\nNoise filter on SCL/SDA inputs\nActive LOW interrupt output\n6 address pins allowing up to 64 devices on the I²C-bus/SMBus\nNo glitch on power-up\nSupports hot insertion\nPower-up with all channels configured as inputs\nLow standby current\nOperating power supply voltage range of 2.5 V to 3.6 V\n5 V tolerant inputs/outputs\n0 Hz to 400 kHz clock frequency\nESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101\nLatch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA\nPackages offered: SO20, TSSOP20, HVQFN20\n;

The PCA9501 is an 8-bit I/O expander with an on-board 2-kbit EEPROM.\nThe I/O expandable eight quasi-bidirectional data pins can be independently assigned as inputs or outputs to monitor board level status or activate indicator devices such as LEDs. The system master writes to the I/O configuration bits in the same way as for the PCF8574. The data for each input or output is kept in the corresponding input or output register. The system master can read all registers.\nThe EEPROM can be used to store error codes or board manufacturing data for read-back by application software for diagnostic purposes and are included in the I/O expander package.\nThe PCA9501 active LOW open-drain interrupt output is activated when any input state differs from its corresponding input port register state. It is used to indicate to the system master that an input state has changed and the device needs to be interrogated.\nThe PCA9501 has six address pins with internal pull-up resistors allowing up to 64 devices to share the common two-wire I²C-bus software protocol serial data bus. The fixed GPIO address starts with '0' and the fixed EEPROM I²C-bus address starts with '1', so the PCA9501 appears as two separate devices to the bus master.\nThe PCA9501 supports hot insertion to facilitate usage in removable cards on backplane systems.\n

PCA9501D

I2C Demonstration Board 2005-1 Quick Start Guide