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PI4IOE5V9555 Datasheet(PDF) 1 Page - Pericom Semiconductor Corporation |
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PI4IOE5V9555 Datasheet(HTML) 1 Page - Pericom Semiconductor Corporation |
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1 / 1 page Product Databrief NEW PRODUCT BRIEF www.pericom.com | 1-408-232-9100 PI4IOE5V9555 16-bit I2C-bus and SMBus I/O port with interrupt Î Î Operation power supply voltage from 2.3V to 5.5V Î Î 16-bit I/O pins which can be programmed as Input or Output Î Î 5V tolerant I/Os Î Î Polarity inversion register Î Î Active LOW interrupt output Î Î Low current consumption Î Î 0Hz to 400KHz clock frequency Î Î Noise filter on SCL/SDA inputs Î Î Power-on reset Î Î ESD protection (4KV HBM and 1KV CDM) Î Î Latch-up tested (exceeds 100mA) Î Î Offered in two different packages: - TSSOP-24 and TQFN 4x4-24 The PI4IOE5V9555 is an I2C-bus I/O expander that provides 16 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications. It includes the features such as higher driving capability, 5V tolerance, lower power supply, individual I/O configuration, and smaller packaging. It provides a simple solution when additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, etc. The PI4IOE5V9555 consists of two 8-bit configuration registers to configure the I/Os as either inputs or outputs, and two 8-bit polarity registers to change the polarity of the input port register data. The data for each input or output is kept in the corresponding Input port or Output port register. All registers can be read by the system master. The PI4IOE5V9555 open-drain interrupt output is activated and indicate to the system when any input state has changed. The power-on reset sets the registers to their default values and initializes the device state machine. Three input pins (A0, A1, A2) can select I2C-bus address of PI4IOE5V9555 from the eight preset address. It allows up to eight PI4IOE5V9555 to share the same I2C-bus/SMBus and provide maximum 128 I/Os. Features |
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