PI4IOE5V6524

Description

The PI4IOE5V6524 is a 24-bit general-purpose I/O expander that provides remote I/O expansion for most microcontroller families via the I²C-bus interface.

It provides a simple solution when additional I/Os are needed while keeping interconnections to a minimum, for example, in battery-powered mobile applications for interfacing to sensors, push buttons, keypad, etc.

It can operate from 1.65V to 5.5V on the GPIO-port side and 0.8V to 3.6V on the SDA/SCL side. This allows the PI4IOE5V6524 to interface with next generation microprocessors and microcontrollers on the SDA/SCL side, where supply levels are dropping down to conserve power.

The bidirectional voltage-level translation in the PI4IOE5V6524 is provided through V_{DD (12C_bus)}. V_{DD (I2C_bus)} should be connected to the V_DD of the external SCL/SDA lines. The voltage level on the GPIO-port of the PI4IOE5V6524 is determined by V_{DD (P)}.

At power on, the I/Os are configured as inputs; however, the system master can enable the I/Os as either inputs or outputs by writing to the I/O direction bits. The data for each input or output is kept in the corresponding Input or Output register. All registers can be read by the system master.

PI4IOE5V6524 has open-drain interrupt (INT) output pin that goes LOW when the input state of a GPIO-port changes from the input-state default register value. The device also has an interrupt masking feature by which the user can mask the interrupt from an individual GPIO-port.

Feature(s)

• Operating power supply voltage range of 0.8V to 3.6V on the I²C- bus side
• Allows bidirectional voltage-level translation and GPIO expansion between:
  • 8V to 3.6V SCL/SDA and 1.8/2.5/3.3/5.5V Port
• Low standby current consumption:
  • 2μA typical at 3.3V V_DD(P)
• 5V tolerant I/O ports and 3.6V tolerant I²C-bus pins
• 1MHz Fast-mode Plus I²C-bus interface
• Compliant with the I²C-bus Fast-mode plus, Fast-mode and Standard mode
• I/O Features
  • Output port configuration: bank selectable or pin selectable push-pull or open-drain output stages
  • Interrupt status: read-only register identifies the source of an interrupt
  • I/O programming features:
    • Output drive strength: four programmable drive strengths to reduce rise and fall times in low-capacitance applications Input latch: Input Port register values changes are kept until the Input Port register is read
    • Pull-up/pull-down enable: floating input or pull-up/pull- down resistor enable
    • Pull-up/pull-down selection: 100 kohm pull-up/pull-down resistor selection
    • Interrupt mask: mask prevents the generation of the interrupt when input changes state to prevent spurious interrupts
    • Interrupt edge specification on a bit-by-bit basis
    • Interrupt individual clear without disturbing other events
    • Read all interrupt events without clear
    • Switch debounce hardware
    • General call software reset
    • I²C software Device ID function
• Power-on reset
• Active LOW open-drain interrupt output (INT)
• Active LOW reset input (RESET)
• Latch-up tested (exceeds 100mA)
• Latched Outputs for Directly Driving LEDs
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
• For automotive applications requiring specific change control (i.e. parts qualified to AEC Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/
• Packaging (Pb-free & Green):
  • 32-Pin TQFN 5x5mm