MC68HC812A4 Datasheet, PDF (200/342 Pages) Motorola, Inc – 16-bit device composed of standard on-chip peripheral modules connected by an intermodule bus. Modules include

Standard Timer Module
PAOVI — Pulse Accumulator Overflow Interrupt Enable Bit
PAOVI enables the pulse accumulator overflow flag, PAOVF, to
generate interrupt requests.
1 = PAOVF interrupt requests enabled
0 = PAOVF interrupt requests disabled
PAI — Pulse Accumulator Interrupt Enable Bit
PAI enables the pulse accumulator input flag, PAIF, to generate
interrupt requests.
1 = PAIF interrupt requests enabled
0 = PAIF interrupt requests disabled
12.6.15 Pulse Accumulator Flag Register
Address: $00A1
Bit 7
6
5
4
3
2
1
Bit 0
Read: 0
0
0
0
0
0
PAOVF PAIF
Write:
Reset: 0
0
0
0
0
0
0
0
= Unimplemented
Figure 12-22. Pulse Accumulator Flag Register (PAFLG)
Read: Anytime
Write: Anytime; writing 1 clears the flag; writing 0 has no effect
PAOVF — Pulse Accumulator Overflow Flag
PAOVF is set when the 16-bit pulse accumulator overflows from
$FFFF to $0000. Clear PAOVF by writing to the pulse accumulator
flag register with PAOVF set.
1 = Pulse accumulator overflow
0 = No pulse accumulator overflow
MC68HC812A4 — Rev. 3.0
200
Standard Timer Module
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