MC68HC11KA4TS Datasheet, PDF (57/68 Pages) Motorola, Inc – 8-Bit Microcontroller

NOTE
Control bits [7:4] in TMSK2 correspond bit for bit with flag bits [7:4] in TFLG2. Ones
in TMSK2 enable the corresponding interrupt sources.
PAOVI — Pulse Accumulator Overflow Interrupt Enable
Refer to 11 Pulse Accumulator.
PAII — Pulse Accumulator Interrupt Enable
Refer to 11 Pulse Accumulator.
Bits [3:2] — Not implemented
Always read zero
PR[1:0] — Timer Prescaler Select
In normal modes, PR1 and PR0 can only be written once, and the write must occur within 64 cycles
after reset. Refer to 10.1 Real-Time Interrupt for specific timing values.
PR[1:0]
00
01
10
11
Prescaler
1
4
8
16
TFLG2 — Timer Interrupt Flag 2
Bit 7
6
5
4
3
2
TOF
RTIF PAOVF PAIF
—
—
RESET:
0
0
0
0
0
0
Clear flags by writing a one to the corresponding bit position(s).
TOF — Timer Overflow Flag
Set when TCNT changes from $FFFF to $0000
RTIF — Real-Time (Periodic) Interrupt Flag
Set periodically. Refer to RTR[1:0] bits in PACTL register.
PAOVF — Pulse Accumulator Overflow Flag
Refer to 11 Pulse Accumulator.
PAIF — Pulse Accumulator Input Edge Flag
Refer to 11 Pulse Accumulator.
Bits [3:0] — Not implemented
Always read zero
$0025
1
Bit 0
—
—
0
0
MC68HC11KA4
MC68HC11KA4TS/D
MOTOROLA
57