RX610 Group
17. 8-Bit Timer (TMR)
R01UH0032EJ0120 Rev.1.20
Page 586 of 1006
Feb 20, 2013
Timing to Change the
TCCR.CKS[2:0] Bits
TCNT Clock Operation
Switching from high to low
*
4
Clock before
switching
Clock after
switching
TCNT
input clock
TCNT
TCCR.CKS[2:0] bits changed
N+1
N
N+2
N+3
Switching from high to high
Clock before
switching
Clock after
switching
TCNT
input clock
TCNT
TCCR.CKS[2:0] bits changed
N+1
N
N+2
Notes: 1. Includes switching from low to stop, and from stop to low.
2. Includes switching from stop to high.
3. Generated because the change of the signal levels is considered as an edge; TCNT is incremented.
4. Includes switching from high to stop.
17.7.8
Clock Source Setting with Cascaded Connection
If 16-bit count mode and compare match count mode are specified at the same time, input clocks for TMR0.TCNT and
TMR1.TCNT (TMR2.TCNT and TMR3.TCNT) are not generated, and the counter stops. Do not specify 16-bit count
mode and compare match count mode simultaneously.