Section 11 8-Bit Timers (TMR)
Table 11.2 Clock Input to TCNT and Count Condition
TCR
Bit 2
Bit 1
Channel
CKS2
CKS1
TMR_0
0
0
0
0
0
1
0
1
1
0
TMR_1
0
0
0
0
0
1
0
1
1
0
Rev.2.00 Jun. 28, 2007 Page 420 of 666
REJ09B0311-0200
TCCR
Bit 0
Bit 1
Bit 0
CKS0
ICKS1
ICKS0
0
1
0
0
0
1
1
0
1
1
0
0
0
0
1
1
0
1
1
1
0
0
0
1
1
0
1
1
0
0
1
0
0
0
1
1
0
1
1
0
0
0
0
1
1
0
1
1
1
0
0
0
1
1
0
1
1
0
Description
Clock input prohibited.
Uses internal clock. Counts at rising edge of Pφ/8.
Uses internal clock. Counts at rising edge of Pφ/2.
Uses internal clock. Counts at falling edge of Pφ/8.
Uses internal clock. Counts at falling edge of Pφ/2.
Uses internal clock. Counts at rising edge of Pφ/64.
Uses internal clock. Counts at rising edge of Pφ/32.
Uses internal clock. Counts at falling edge of Pφ/64.
Uses internal clock. Counts at falling edge of Pφ/32.
Uses internal clock. Counts at rising edge of Pφ/8192.
Uses internal clock. Counts at rising edge of Pφ/1024.
Uses internal clock. Counts at falling edge of Pφ/8192.
Uses internal clock. Counts at falling edge of Pφ/1024.
Counts at TCNT_1 overflow signal*
Clock input prohibited.
Uses internal clock. Counts at rising edge of Pφ/8.
Uses internal clock. Counts at rising edge of Pφ/2.
Uses internal clock. Counts at falling edge of Pφ/8.
Uses internal clock. Counts at falling edge of Pφ/2.
Uses internal clock. Counts at rising edge of Pφ/64.
Uses internal clock. Counts at rising edge of Pφ/32.
Uses internal clock. Counts at falling edge of Pφ/64.
Uses internal clock. Counts at falling edge of Pφ/32.
Uses internal clock. Counts at rising edge of Pφ/8192.
Uses internal clock. Counts at rising edge of Pφ/1024.
Uses internal clock. Counts at falling edge of Pφ/8192.
Uses internal clock. Counts at falling edge of Pφ/1024.
Counts at TCNT_0 compare match A*
1
.
1
.