HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 196

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

Table 7-9 Internal Clock Switchover and RTCNT Operation (cont)
No.
3
4
Notes: 1. Including switchover from a high clock source to the halted state.
CKS2 to CKS0
Write Timing
High
High
2. The switchover is regarded as a falling edge, causing RTCNT to increment.
low switchover
high switchover
*1
Old clock
source
New clock
source
RTCNT
clock
RTCNT
Old clock
source
New clock
source
RTCNT
clock
RTCNT
RTCNT Operation
182
N
N
CKS bits rewritten
N + 1
N + 1
*
2
CKS bits rewritten
N + 2
N + 2