HD6413308 Hitachi Semiconductor, HD6413308 Datasheet - Page 184

• Manufacturer Part Number: HD6413308
• Description: Hitachi Single-Chip MicroComputer
• Manufacturer: Hitachi Semiconductor

Table 7-5. Effect of Changing Internal Clock Sources (cont.)
No.
3
4
*
*
1
2
Including a transition from High to the stopped state.
The switching of clock sources is regarded as a falling edge that increments the TCNT.
Description
High
CKS1 and CKS0 are
rewritten while old
clock source is High and
new clock source is Low.
High
CKS1 and CKS0 are
rewritten while both
clock sources are High.
Low*
High:
1
:
Old clock
source
New clock
source
TCNT clock
pulse
TCNT
Old clock
source
New clock
source
TCNT clock
pulse
TCNT
170
N
N
Timing chart
N + 1
CKS rewrite
N + 1
*
*
3
2
N + 2
CKS rewrite
N + 2