MC68HC912DG128 Datasheet, PDF (221/452 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Enhanced Capture Timer
Timer Registers
to the TCNT register ($84, $85) clears the TOF flag. Any
access to the PACN3 and PACN2 registers ($A2, $A3) clears
the PAOVF and PAIF flags in the PAFLG register ($A1). Any
access to the PACN1 and PACN0 registers ($A4, $A5) clears
the PBOVF flag in the PBFLG register ($B1). Any access to the
MCCNT register ($B6, $B7) clears the MCZF flag in the
MCFLG register ($A7). This has the advantage of eliminating
software overhead in a separate clear sequence. Extra care is
required to avoid accidental flag clearing due to unintended
accesses.
Bit 7
6
5
4
3
2
1
Bit 0
RESET:
0
0
0
0
0
0
0
0
TQCR — Reserved
$0087
Bit 7
6
5
4
3
2
1
Bit 0
OM7
OL7
OM6
OL6
OM5
OL5
OM4
OL4
RESET:
0
0
0
0
0
0
0
0
TCTL1 — Timer Control Register 1
$0088
MC68HC912DG128 — Rev 3.0
MOTOROLA
Enhanced Capture Timer
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Go to: www.freescale.com
Technical Data
221