TMS370 datasheet(32/73 Pages) TI

32 / 73 page

TMS370Cx6x

8-BIT MICROCONTROLLER

SPNS033C – SEPTEMBER 1995 – REVISED FEBRUARY 1997

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251–1443

timer 2n modules (T2A and T2B) (continued)

16–Bit

INT

Logic

Capt/Comp

16–Bit

Capture

Edge

Detect

PWM

Toggle

T2nIC2/PWM

(Dual-Compare Mode)

Edge

Detect

16–Bit

Compare

16–Bit

Counter

Clock

Select

(Dual-Capture Mode)

T2nIC1 / CR

T2nIC2 / PWM

T2nEVT

Figure 11. Timer 2n Block Diagram

The T2n module features include the following:

D Three T2A I/O pins

–

T2nIC1/CR: Timer 2n input capture 1 / counter-reset input pin, or general-purpose bidirectional I/O pin

–

T2nIC2/PWM: Timer 2n input capture 2 / pulse-width-modulation (PWM) output pin, or general-purpose

bidirectional I/O pin

–

T2nEVT: Timer 2n event-input pin, or general-purpose bidirection I/O pin

D Two operation modes:

–

Dual-compare mode: Provides PWM signal

–

Dual-capture 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 register with associated capture logic

D One 16-bit capture/compare register, which, depending on the mode of operation, operates as either

capture or compare registers

D T2n clock sources can be any of the following:

–

System clock

–

No clock (the counter is stopped)

–

External clock synchronized to the system clock (event counter)

–

System clock while external input is high (pulse accumulation)

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