HD64336901G Renesas Technology, HD64336901G Datasheet - Page 104

• Manufacturer Part Number: HD64336901G
• Description: (HD64xxx Series) 16-BIT MICROCONTROLLER
• Manufacturer: Renesas Technology

Rev. 1.00, 11/03, page 76 of 376
[Legend]
OSCSEL: Bit 4 in CKCSR
PHISTOP: System clock stop control signal
CKSTA:
CKSWIF:
Note: * The
OSC:
RC:
:
(Internal signal)
Figure 5.7 Timing Chart to Switch External Clock to Internal RC Clock
PHISTOP
OSCSEL
CKSWIF
CKSTA
seventh rising edge of the
External clock
Internal RC clock
System clock
Bit 0 in CKCSR
Bit 2 in CKCSR
OSC
RC
halt duration is the duration from the timing when the
External RC clock operation
Wait for external
oscillation settling
RC
clock.
Nwait
halt*
clock stops to the
External clock
operation