XC912BC32CFU8 Motorola Semiconductor Products, XC912BC32CFU8 Datasheet - Page 175

• Manufacturer Part Number: XC912BC32CFU8
• Description: M68HC12B Family Data Sheet
• Manufacturer: Motorola Semiconductor Products

13.3.3 Modulus Down-Counter
M68HC12B Family — Rev. 8.0
MOTOROLA
PRESCALED CLOCK
INTERRUPT
INTERRUPT
FROM TIMER
The modulus down-counter can be used as a timebase to generate a periodic
interrupt. It can also be used to latch the values of the IC registers and the pulse
accumulators to their holding registers. The action of latching can be programmed
to be periodic or only once.
CLK1
CLK0
Figure 13-4. 16-Bit Pulse Accumulators Block Diagram
8-BIT PAC3
8-BIT PAC1
(PACN3)
(PACN1)
Enhanced Capture Timer (ECT) Module
4:1 MUX
PACA
PACB
8-BIT PAC2
8-BIT PAC0
(PACN2)
(PACN0)
CLOCK SELECT
(PAMOD)
TIMCLK
(TIMER CLOCK)
Enhanced Capture Timer Modes of Operation
Enhanced Capture Timer (ECT) Module
EDGE DETECTOR
MUX
EDGE DETECTOR
DELAY COUNTER
DIVIDE BY 64
M CLOCK
PT0
PT7
Data Sheet
175