Datasheet

113
AT32UC3A
17.6.4 External Interrupt Scan
Name: SCAN
Access Type: Read/Write
• 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]
7 6 5 4 3 2 1 0
- - - - - - - EN
32058K
AVR32-01/12