ADP5587ACPZ-R7 - 

制造商：

ANALOG DEVICES ANALOG DEVICES

制造商产品编号：

ADP5587ACPZ-R7

仓库库存编号：

2457404RL

技术数据表：

(EN)

The ADP5587 series 18 I/O port Expander and Keypad Matrix designed for QWERTY type phones that require a large keypad matrix and expanded I/O lines. I/O expander ICs are used in mobile platforms as a solution to the limited number of GPIOs available in the main processor. The ADP5587 contains enough power to handle all key scanning and decoding and to flag the processor of key presses and releases via the I2C interface and interrupt. It frees the main microprocessor from the need to monitor the keypad, thereby minimizing current drain and increasing processor bandwidth. It is also equipped with a buffer/FIFO and key event counter to handle and keep track of up to 10 unprocessed key or GPI events with overflow wrap and interrupt capability. It has keypad lock capability with an option to trigger or not trigger an interrupt at key presses and releases.

• Keypad lock capability
• Open-drain interrupt output
• Key press and key release interrupts
• GPI interrupt with level programmability
• Programmable pull-ups
• Key event counter with overflow interrupt
• 275μs Debounce on the reset line and GPIs
• 1μA Typical idle current
• 55μA Typical polling current