ADP5585

Data Sheet Keypad Decoder and I/O Expansion ADP5585 FEATURES 16-element FIFO for event recording 10 configurable I/Os allowing functions such as Key pad decoding for a matrix of up to 5 × 5 11 GPIOs (5 × 6) with ADP5585ACxZ-01-R7 models Key press/release interrupts GPIO functions GPI with selectable interrupt level 100 kΩ or 300 kΩ pull-up resistors 300 kΩ pull-down resistors GPO with push-pull or open-drain Programmable logic block PWM generator Internal PWM generation External PWM with internal PWM AND function Reset generators I2C interface with fast mode plus (Fm+) support of up to 1 MHz Open-drain interrupt output 16-ball WLCSP, 1.59 mm × 1.59 mm 16-lead LFCSP, 3 mm × 3 mm FUNCTIONAL BLOCK DIAGRAM VDD GND RST/R5 ADP5585 UVLO POR OSCILLATOR SDA SCL I2C INTERFACE INT R0 R1 R2 R3 R4 I/O CONFIG C0 C1 C2 C3 C4 KEY SCAN AND DECODE GPI SCAN AND DECODE LOGIC PWM RESET1 GEN RESET2 GEN Figure 1. REGISTERS 09841-001 APPLICATIONS Keypad entries and input/output expansion capabilities Smart phones, remote controls, and cameras Healthcare, industrial, and instrumentation GENERAL DESCRIPTION The ADP5585 is a 10 input/output port expander with a built in keypad matrix decoder, programmable logic, reset generator, and PWM generator. Input/output expander ICs are used in portable devices (phones, remote controls, and cameras) and nonportable applications (healthcare, industrial, and instrumentation). I/O expanders can be used to increase the number of I/Os avai...