NO:
W90P710 Programming Guide
VERSION:
2.1
PAGE:
24
The above information is the exclusive intellectual property of Winbond Electronics and shall not be disclosed,
distributed or reproduced without permission from Winbond.
Table No.: 1200-0003-07-A
1.1.20 Keypad
Interface
•
Scan up to 16x8 with an external 4 to 16 decoder and 4x8 array without auxiliary component
•
Programmable
debounce
time
•
One or two keys scan with interrupt and three keys reset function.
•
Support low power mode wakeup function
1.1.21
PS2 Host Interface Controller
•
APB slave consisted of PS2 protocol.
•
Connect IBM keyboard or bar-code reader through PS2 interface.
•
Provide hardware scan code to ASCII translation
1.1.22 Power
Management
•
Programmable clock enables for individual peripheral
•
IDLE mode to halt ARM Core and keep peripheral working
•
Power-Down mode to stop all clocks included external crystal oscillator.
•
Exit IDLE/Power-Down by interrupts
•
