MC68HC912B32MFU8 MOTOROLA [Motorola, Inc], MC68HC912B32MFU8 Datasheet - Page 77

• Manufacturer Part Number: MC68HC912B32MFU8
• Description: 16-Bit Microcontroller
• Manufacturer: MOTOROLA [Motorola, Inc]

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
TCRE — Timer Counter Reset Enable
PR2, PR1, PR0 — Timer Prescaler Select
MC68HC912B32
MC68HC912B32TS/D
RESET:
RESET:
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.
This bit allows the timer counter to be reset by a successful output compare 7 event.
If TC7 = $0000 and TCRE = 1, TCNT will stay at $0000 continuously. If TC7 = $FFFF and TCRE = 1,
TOF will never get set even though TCNT will count from $0000 through $FFFF.
These three bits specify the number of 2 stages that are to be inserted between the module clock and
the timer counter.
0 = Interrupt inhibited
1 = Hardware interrupt requested when TOF flag set
1 = Enable pull-up resistor function
0 = Disable pull-up resistor function
1 = Enable output drive reduction function
0 = Normal output drive capability
0 = Counter reset inhibited and counter free runs
1 = Counter reset by a successful output compare 7
Bit 7
Bit 7
TOI
C7I
0
0
C6I
6
0
6
0
0
PR2
PUPT
0
0
0
0
1
1
1
1
C5I
5
0
5
0
Table 26 Prescaler Selection
RDPT
PR1
C4I
0
0
1
1
0
0
1
1
4
0
4
0
TCRE
C3I
PR0
3
0
3
0
0
1
0
1
0
1
0
1
Reserved
Reserved
Prescale
PR2
Factor
C2I
2
0
2
0
16
32
1
2
4
8
PR1
C1I
1
0
1
0
Bit 0
Bit 0
PR0
C0I
0
0
MOTOROLA
$008C
$008D
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