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Fabricante

AT90S1200

8-Bit Microcontroller with 1K bytes In-System Programmable Flash

Atmel Corporation 

Timer/Counter0

Timer/Counter0

Prescaler

The AT90S1200 provides one general purpose 8-bit Timer/Counter. The

Timer/Counter0 gets the prescaled clock from the 10-bit prescaling timer. The

Timer/Counter0 can either be used as a Timer with an internal clock time base or as a

Counter with an external pin connection, which triggers the counting.

Figure 18 shows the general Timer/Counter0 prescaler.

Figure 18. Timer/Counter0 Prescaler

T0

TCK0

The four different prescaled selections are: CK/8, CK/64, CK/256, and CK/1024 where

CK is the Oscillator Clock. For the Timer/Counter0, added selections as CK, external

clock source and stop, can be selected as clock sources. Figure 19 shows the block dia-

gram for Timer/Counter0.

20 AT90S1200

0838H–AVR–03/02

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