AT90S1200 ATMEL Corporation, AT90S1200 Datasheet - Page 20

• Manufacturer Part Number: AT90S1200
• Description: 8-Bit Microcontroller with 1K bytes In-System Programmable Flash
• Manufacturer: ATMEL Corporation

Timer/Counter0
Timer/Counter0
Prescaler
20
AT90S1200
Th e A T90 S 12 00 pr o v id e s o ne ge ne r al pu r p os e 8 - bi t Ti m er / Co un te r . Th e
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
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.
T0
TCK0
0838H–AVR–03/02