ATMEGA161-8PC View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
ATMEGA161-8PC
Atmel Corporation
'ATMEGA161-8PC' PDF : 159 Pages View PDF
ATmega161(L)
8-bit Timers/Counters T/C0 and T/C2
Figure 32 shows the block diagram for Timer/Counter0. Figure 33 shows the block diagram for Timer/Counter2.
Figure 32. Timer/Counter0 Block Diagram
T/C0 OVER- T/C0 COMPARE
FLOW IRQ MATCH IRQ
TIMER INT. MASK
REGISTER (TIMSK)
TIMER INT. FLAG
REGISTER (TIFR)
T/C0 CONTROL
REGISTER (TCCR0)
SPECIAL FUNCTIONS
IO REGISTER (SFIOR)
7
0
T/C CLEAR
TIMER/COUNTER0
(TCNT0)
T/C CLK SOURCE
UP/DOWN
CONTROL
LOGIC
CK
T0
7
0
8-BIT COMPARATOR
7
0
OUTPUT COMPARE
REGISTER0 (OCR0)
Figure 33. Timer/Counter2 Block Diagram
T/C2 OVER- T/C2 COMPARE
FLOW IRQ MATCH IRQ
TIMER INT. MASK
REGISTER (TIMSK)
8-BIT DATA BUS
8-BIT ASYNCH T/C2 DATA BUS
TIMER INT. FLAG
REGISTER (TIFR)
T/C2 CONTROL
REGISTER (TCCR2)
SPECIAL FUNCTIONS
IO REGISTER (SFIOR)
7
0
TIMER/COUNTER2
(TCNT2)
7
0
8-BIT COMPARATOR
7
0
OUTPUT COMPARE
REGISTER2 (OCR2)
CK
TCK2
T/C CLEAR
T/C CLK SOURCE
UP/DOWN
SYNCH UNIT
CONTROL
LOGIC
CK
TOSC1
ASYNCH. STATUS
REGISTER (ASSR)
37
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