Mobile I/O Expander & Keypad Controller

Analog Devices' family of mobile I/O expanders are ideal for smartphone designs and portable devices that require a large extended keypad and/or expanded I/Os such as inventory scanners, medical equipment, and meter readers. Microprocessors in portable systems are GPIO constrained due to the number of functions they must interface with and control. They are also power hungry, making them inefficient for debouncing, polling, and key press scanning algorithms. ADI’s family of mobile I/O expanders offloads key scan and GPIO functions from the CPU, freeing up the processor for higher priority functions while saving energy.
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Mobile I/O Expander-Keypad Controller

Mobile I/O Expander-Keypad Controller

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Mobile I/O Expander & Keypad Controller

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SortOrderPart#QWERTY SupportFIFO EventsProgramming InterfaceGPIO pinsIsupply (typ)
(A)
Vsupply (min)
(V)
Vsupply (max)
(V)
US Price 1000 to 4999
($ US)
1ADP5586 No 16 I²C 10 75µ 1.65 3.6 $0.75
2ADP5585 No 16 I²C, PWM 11 75µ 1.65 3.6 $0.75
3ADP5589 No 16 I²C, PWM 19- 1.8 3.3 $0.99
4ADP5587 Yes 18 I²C 18 100µ 1.65 3.6 $0.99
5ADP5588 Yes 18 I²C 18 100µ 1.7 3 $0.99