TMSK2 — Timer Interrupt Mask 2
$1024
Bit 7
TOI
0
6
RTII
0
5
PAOVI
0
4
PAII
0
3
0
0
2
0
0
1
PR1
0
Bit 0
PR0
0
RESET:
TOI — Timer Overflow Interrupt Enable
Refer to 8 Main Timer.
RTII — Real-Time Interrupt Enable
Refer to 8 Main Timer.
PAOVI — Pulse Accumulator Overflow Interrupt Enable
0 = PAOVF interrupts disabled
1 = Interrupt requested when RTIF is set to one
PAII — Pulse Accumulator Input Edge Interrupt Enable
0 = PAIF interrupts disabled
1 = Interrupt requested when PAIF is set to one
PR1, PR0 — Timer Prescaler Select
Refer to 8 Main Timer.
NOTE
Bits in TMSK2 correspond bit for bit with flag bits in TFLG2. Ones in TMSK2 enable
the corresponding interrupt sources.
TFLG2 — Timer Interrupt Flag 2
$1025
Bit 7
TOF
0
6
RTIF
0
5
PAOVF
0
4
PAIF
0
3
0
0
2
0
0
1
0
0
Bit 0
0
0
RESET:
Clear flags by writing a one to the corresponding bit position(s).
TOF — Timer Overflow Flag
Refer to 8 Main Timer.
RTIF — Real-Time Interrupt Flag
Refer to 8 Main Timer.
PAOVF — Pulse Accumulator Overflow Flag
Set when PACNT changes from $FF to $00.
PAIF — Pulse Accumulator Input Edge Flag
Set each time a selected active edge is detected on the PAI input line.
PACTL — Pulse Accumulator Control
$1026
Bit 7
DDRA7
0
6
PAEN
0
5
4
3
0
0
2
0
0
1
RTR1
0
Bit 0
RTR0
0
PAMOD PEDGE
RESET:
0
0
DDRA7 — Data Direction for Port A Bit 7
Refer to 5 Parallel Input/Output.
MC68HC11A8
MC68HC11A8TS/D
MOTOROLA
39
MOTOROLA [ MOTOROLA ]
