DMC73C167 datasheet(43/90 Pages) DAEWOO

43 / 90 page

8Bit Single Chip Microcontroller

DMC73C167

Bit 7

START. Timer 2 Start/stop Control

0 = Stops Timer 2.

1 = Starts Timer 2.

Table 5-24. P26 011Ah T3DATA Timer 3 Data

Bit

8-bit Timer Decrementer Value

8-bit Timer Reload Register

Table 5-25. P27 011Bh T3CTL1 Timer 3 Control

Bit

Capture Latch Value

START

T3SRC

Not Used

Prescaler Reload

Read : Provides the value of the capture register which contains the latched value

of the decrementer register when INT3_0 was most recently activated.

Write : Timer 3 control as below.

Bits 0, 1 Rescaler Road. Reload the 2-bit Prescaler Reload Register.

Bits 2-5

Not used.

Bit 6

T3SRC. Select Timer 3 Clock Source.

0 = Internal clock (Fosc/4).

1 = Timer 2 underflow (Cascade mode)

Bit 7

START. Timer 3 Start/stop Control

0 = Stops Timer 3.

1 = Starts Timer 3.

5.5.2.2 Real-Time Clock (RTC)

In real-time clock mode, the internal Fosc/4 is the decrementer clock source. Each positive

pulse transition of the Fosc/4 period signal decrements the counter chain.

5.5.2.3 Event Counter (EC)

When Timer 2 is in event counter mode, port A2 (ECI2) is the decrementer clock source for

Timer 2. The maximum clock frequency on A2 in event counter mode must not be greater

than Fosc/4. The minimum pulse duration must not be less than 2/Fosc. Each positive pulse

transition decrements the counter chain. It is not possible for Timer 3 to be in event counter

mode.

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DMC73C167 Datasheet(PDF) 43 Page - Daewoo Semiconductor

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