mc68hc912bl16 Freescale Semiconductor, Inc, mc68hc912bl16 Datasheet - Page 81

• Manufacturer Part Number: mc68hc912bl16
• Description: 16-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

TCTL4 — Timer Control Register 4
EDGnB, EDGnA — Input Capture Edge Control
TMSK1 — Timer Interrupt Mask 1
C7I–C0I — Input Capture/Output Compare “x” Interrupt Enable.
TMSK2 — Timer Interrupt Mask 2
TOI — Timer Overflow Interrupt Enable
PUPT — Timer Pull-Up Resistor Enable
RDPT — Timer Drive Reduction
MC68HC912BL16TS/D
RESET:
RESET:
RESET:
Read or write anytime.
These eight pairs of control bits configure the input capture edge detector circuits.
The bits in TMSK1 correspond bit-for-bit with the bits in the TFLG1 status register. If cleared, the cor-
responding flag is disabled from causing a hardware interrupt. If set, the corresponding flag is enabled
to cause a hardware interrupt.
Read or write anytime.
Read or write anytime.
This enable bit controls pull-up resistors on the timer port pins when the pins are configured as inputs.
This bit reduces the effective output driver size which can reduce power supply current and generated
noise depending upon pin loading.
0 = Interrupt inhibited
1 = Hardware interrupt requested when TOF flag set
1 = Enable pull-up resistor function
0 = Disable pull-up resistor function
EDG3B
Bit 7
Bit 7
Bit 7
TOI
C7I
0
0
0
Port T[6] is not bonded to any pin in MC68HC912BL16.
Port T[6] is not bonded to any pin in MC68HC912BL16.
EDG3A
EDGnB
C6I
6
0
6
0
6
0
0
Freescale Semiconductor, Inc.
0
0
1
1
Table 26 Edge Detector Circuit Configuration
For More Information On This Product,
EDG2B
PUPT
C5I
5
0
EDGnA
5
0
5
0
Go to: www.freescale.com
0
1
0
1
EDG2A
RDPT
C4I
Capture on falling edges only
Capture on any edge (rising or falling)
Capture disabled
Capture on rising edges only
4
0
4
0
4
0
NOTE
NOTE
EDG1B
TCRE
C3I
3
0
3
0
3
0
Configuration
EDG1A
PR2
C2I
2
0
2
0
2
0
EDG0B
PR1
C1I
1
0
1
0
1
0
EDG0A
Bit 0
Bit 0
Bit 0
PR0
C0I
0
0
0
$008B
$008C
$008D
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