Datasheet

125
32072H–AVR32–10/2012
AT32UC3A3
11.7.12 Scan Register
Name: SCAN
Access Type: Read/Write
Offset: 0x2C
Reset Value: 0x0000000
•
EN
0: Keypad scanning is disabled
1: Keypad scanning is enabled
• PRESC
Prescale select for the keypad scan rate:
Scan rate = 2
(SCAN.PRESC+1)
T
RC
The RC clock period can be found in the Electrical Characteristics section.
• PIN
The index of the currently active scan pin. Writing to this bitfield has no effect.
31 30 29 28 27 26 25 24
- - - - - PIN[2:0]
23 22 21 20 19 18 17 16
--------
15 14 13 12 11 10 9 8
- - - PRESC[4:0]
76543210
-------EN