IS31IO7325-GRLS4 ISSI

IS31IO7325 MULTI-FUNCTION I/O DRIVER December 2020 GENERAL DESCRIPTION FEATURES 2 The IS31IO7325 2-wire serial-interfaced peripheral 400kHz I C serial interface features 16 I/O ports. Ports are divided into eight push 2.4V to 5.5V operation pull I/Os and eight open-drain I/Os and transition 8 push-pull I/O ports detection. 8 open-drain I/O ports, rated to 20mA sink current at 0.22V headroom Any of the 16 I/O ports can be configured as an input Selectable I/O port power-up default logic states or an output. All I/O ports configured as inputs are continuously monitored for state changes (transition INTB output alerts change on inputs detection). State changes are indicated by the INTB Low 0.3 A (Typ.) standby current output. The interrupt is latched, allowing detection of -40C ~ +125C temperature range transient changes. When the IS31IO7325 is subsequently read through the serial interface, any pending interrupt is cleared. APPLICATIONS The open-drain outputs are rated to sink 20mA at Cell phones 0.22V headroom, and are capable of driving LEDs. Notebooks The RSTB input clears the serial interface, terminating SAN/NAS 2 any I C communication to or from the IS31IO7325. The 2 Satellite radio IS31IO7325 uses two address inputs to allow 4 I C Servers slave addresses. The slave address also determines Automotive the power-up logic state for the I/O ports. TYPICAL APPLICATION CIRCUIT Figure 1 Typical Application Circuit Note 1: V must be equal to or greater than V . V > V is forbidden. V should be turned off when system power off because OD ports Battery DD DD Battery DD are open default. Lumissil Microsystems www.lumissil.com 1 Rev. D, 12/03/2020 IS31IO7325 PIN CONFIGURATION Package Pin Configuration (Top View) PP0 1 18 AD0 PP1 2 17 PP7 PP2 3 16 PP6 QFN-24 PP3 4 15 PP5 OD0 5 14 PP4 OD1 6 13 OD7 SOP-24 Lumissil Microsystems www.lumissil.com 2 Rev. D, 12/03/2020