HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 195

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

Table 7-9 Internal Clock Switchover and RTCNT Operation
No.
1
2
Notes: 1. Including switchovers from a low clock source to the halted state, and from the halted
CKS2 to CKS0
Write Timing
Low
Low
2. Including switchover from the halted state to a high clock source.
state to a low clock source.
low switchover
high switchover
*1
*2
Old clock
source
New clock
source
RTCNT
clock
RTCNT
Old clock
source
New clock
source
RTCNT
clock
RTCNT
RTCNT Operation
181
N
N
CKS bits rewritten
N + 1
CKS bits rewritten
N + 1
N + 2