AT90SCR100_09 Datasheet, PDF (332/433 Pages) ATMEL Corporation – 8-bit Microcontroller for Smart Card Readers

Set to enable KBFR.KBF2 to generate an interrupt request.
• Bit 1 - KBE1 : Keyboard KbIN1 Enable bit
Cleared to enable standard I/O pin.
Set to enable KBFR.KBF1 to generate an interrupt request.
• Bit 0 - KBE0 : Keyboard KbIN0 Enable bit
Cleared to enable standard I/O pin.
Set to enable KBFR.KBF0 to generate an interrupt request.
23.3.3 KBLSR - KeyBoard Level Selection Register
Bit
$008D
Read/write
Initial value
7
KBLS7
R/W
0
6
KBLS6
R/W
0
5
KBLS5
R/W
0
4
KBLS4
R/W
0
3
KBLS3
R/W
0
2
KBLS2
R/W
0
1
KBLS1
R/W
0
0
KBLS0
R/W
0
KBLSR
0x00
• Bit 7- KBLS7 : Keyboard KbIN7 Level Selection bit
Cleared to enable low level detection on KbIN7.
Set to enable a high level detection on KbIN7.
• Bit 6- KBLS6 : Keyboard KbIN6 Level Selection bit
Cleared to enable low level detection on KbIN6.
Set to enable a high level detection on KbIN6.
• Bit 5 - KBLS5 : Keyboard KbIN5 Level Selection bit
Cleared to enable low level detection on KbIN5.
Set to enable a high level detection on KbIN5.
• Bit 4 - KBLS4 : Keyboard KbIN4 Level Selection bit
Cleared to enable low level detection on KbIN4.
Set to enable a high level detection on KbIN4.
• Bit 3 - KBLS3 : Keyboard KbIN3 Level Selection bit
Cleared to enable low level detection on KbIN3.
Set to enable a high level detection on KbIN3.
• Bit 2 - KBLS2 : Keyboard KbIN2 Level Selection bit
Cleared to enable low level detection on KbIN2.
Set to enable a high level detection on KbIN2.
• Bit 1 - KBLS4 : Keyboard KbIN1 Level Selection bit
Cleared to enable low level detection on KbIN1.
Set to enable a high level detection on KbIN1.
332 AT90SCR100
TPR0327AY–SMS–30Jan09