MC68HC12 MOTOROLA [Motorola, Inc], MC68HC12 Datasheet - Page 256
MC68HC12
Manufacturer Part Number
MC68HC12
Description
The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC12.pdf
(478 pages)
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TCTL4 — Timer Control Register 4
TMSK1 — Timer Interrupt Mask 1
TCTL3 — Timer Control Register 3
Enhanced Capture Timer
Technical Data
256
RESET:
RESET:
RESET:
EDG3B
EDG7B
Bit 7
Bit 7
Bit 7
C7I
0
0
0
EDG7A
EDG3A
C6I
6
0
6
0
6
0
Read or write anytime.
EDGnB, EDGnA — Input Capture Edge Control
Read or write anytime.
The bits in TMSK1 correspond bit-for-bit with the bits in the TFLG1 status
register. If cleared, the corresponding flag is disabled from causing a
hardware interrupt. If set, the corresponding flag is enabled to cause a
hardware interrupt.
Read or write anytime.
C7I–C0I — Input Capture/Output Compare “x” Interrupt Enable.
These eight pairs of control bits configure the input capture edge
detector circuits.
EDG2B
EDG6B
C5I
5
0
5
0
5
0
Table 15-2. Edge Detector Circuit Configuration
EDGnB
Enhanced Capture Timer
0
0
1
1
EDG6A
EDG2A
C4I
4
0
4
0
4
0
EDGnA
0
1
0
1
EDG5B
EDG1B
C3I
3
0
3
0
3
0
Capture disabled
Capture on rising edges only
Capture on falling edges only
Capture on any edge (rising or falling)
EDG5A
EDG1A
C2I
2
0
2
0
2
0
Configuration
MC68HC912DT128A — Rev 4.0
EDG4B
EDG0B
C1I
1
0
1
0
1
0
EDG4A
EDG0A
Bit 0
Bit 0
Bit 0
C0I
0
0
0
MOTOROLA
$008B
$008A
$008C
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