mc68hc912bc32 Freescale Semiconductor, Inc, mc68hc912bc32 Datasheet - Page 186

• Manufacturer Part Number: mc68hc912bc32
• Description: M68hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Enhanced Capture Timer (ECT) Module
PBOVF — Pulse Accumulator B Overflow Flag
13.4.25 8-Bit Pulse Accumulators Holding Registers
Read: Anytime
Write: Anytime
These registers are used to latch the value of the corresponding pulse accumulator when the related bits
in register ICPACR ($A8) are enabled (see
186
This bit is set when the 16-bit pulse accumulator B overflows from $FFFF to $0000 or when 8-bit pulse
accumulator 1 (PAC1) overflows from $FF to $00. This bit is cleared by a write to the PBFLG register
with bit 1 set. Any access to the PACN1 and PACN0 registers will clear the PBOVF flag in this register
when TFFCA bit in register TSCR ($86) is set.
Address: $00B2
Address: $00B3
Address: $00B4
Address: $00B5
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Figure 13-46. 8-Bit Pulse Accumulator Holding Register 3 (PA3H)
Figure 13-47. 8-Bit Pulse Accumulator Holding Register 2 (PA2H)
Figure 13-48. 8-Bit Pulse Accumulator Holding Register 1 (PA1H)
Figure 13-49. 8-Bit Pulse Accumulator Holding Register 0 (PA0H)
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
0
0
0
0
Bit 6
Bit 6
Bit 6
Bit 6
6
0
6
0
6
0
6
0
M68HC12B Family Data Sheet, Rev. 9.1
Bit 5
Bit 5
Bit 5
Bit 5
5
0
5
0
5
0
5
0
13.3.2 Pulse
Bit 4
Bit 4
Bit 4
Bit 4
4
0
4
0
4
0
4
0
Accumulators).
Bit 3
Bit 3
Bit 3
Bit 3
3
0
3
0
3
0
3
0
Bit 2
Bit 2
Bit 2
Bit 2
2
0
2
0
2
0
2
0
Bit 1
Bit 1
Bit 1
Bit 1
1
0
1
0
1
0
1
0
Freescale Semiconductor
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
0
0
0
0