TMS370CX9X_05 Datasheet, PDF (19/55 Pages) Texas Instruments – 8-BIT MICROCONTROLLER

timer 1 module (continued)
T1IC/CR
T1EVT
MUX
8-Bit
Prescaler
MUX
TMS370Cx9x
8-BIT MICROCONTROLLER
SPNS036B – JANUARY 1996 – REVISED FEBRUARY 1997
Edge
Select
16-Bit
Counter
16-Bit
Capt/Comp
Register
16
16-Bit
Compare
Register
16-Bit
WatchdogCounter
(Aux. Timer)
PWM
Toggle
Interrupt
Logic
Interrupt
Logic
T1PWM
Figure 5. Timer 1 Block Diagram
D Three T1 I/O pins:
– T1IC/CR: Timer 1 input capture / counter reset input pin, or general-purpose bidirectional I/O pin
– T1PWM: Timer 1 pulse-width-modulation (PWM) output pin, or general-purpose bidirectional I/O pin
– T1EVT: Timer 1 event input pin, or general-purpose bidirectional I/O pin
D Two operation modes:
– Dual-compare mode: Provides PWM signal.
– Capture/compare mode: Provides input capture pin.
D One 16-bit general-purpose resettable counter
D One 16-bit compare register with associated compare logic
D One 16-bit capture / compare register, which, depending on the mode of operation, operates as either
capture or compare registers.
D One 16-bit watchdog counter can be used as an event counter, a pulse accumulator, or an interval timer
if watchdog feature is not needed.
D Prescaler/ clock sources that determines one of eight clock sources for general-purpose timer
D Selectable edge-detection circuitry that, depending on the mode of operation, senses active transitions on
the input capture pins (T1IC/CR).
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