TMS370 datasheet(27/66 Pages) TI

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TMS370Cx4x

8-BIT MICROCONTROLLER

SPNS016C – NOVEMBER 1992 – REVISED FEBRUARY 1997

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251–1443

timer 2A module

The 16-bit general-purpose timer 2A (T2A) module is composed of a 16-bit resettable counter, 16-bit compare

that provides an event count, input capture, and compare function. The T2A module includes three external

device pins that can be dedicated as timer functions or used as general-purpose I/O pins. The T2A module is

shown in Figure 11.

16–Bit

INT

Logic

Capt/Comp

16–Bit

Capture

Edge

Detect

T2AEVT

PWM

Toggle

T2AIC2/PWM

(Dual-Compare Mode)

Edge

Detect

T2AIC1/CR

T2AIC2/PWM

16–Bit

Compare

16–Bit

Counter

Clock

Select

(Dual-Capture Mode)

Figure 11. Timer 2A Module Block Diagram

The T2A module features include the following:

D Three T2A I/O pins:

–

T2AIC1/CR: T2A input-capture 1 / counter-reset input pin, or general-purpose bidirectional I/O pin

–

T2AIC2/PWM: T2A input-capture 2 / pulse-width-modulation (PWM) output pin, or general-purpose

bidirectional I/O pin

–

T2AEVT: Timer 2A event-input pin, or general-purpose bidirectional I/O pin

D Two operational 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 a

capture or compare register

TMS370 Datasheet(PDF) 27 Page - Texas Instruments

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