HD6432646 Hitachi, HD6432646 Datasheet - Page 460

• Manufacturer Part Number: HD6432646
• Description: (HD64F264x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

426
Internal
reset signal
Legend
WT/IT
TME
Note: * The WOVF bit is set to 1 and then cleared to 0 by an internal reset.
H'FF
H'00
: Timer mode select bit
: Timer enable bit
TCNT value
WT/IT= 1
TME= 1
Figure 12-4 (b) WDT1 Watchdog Timer Operation
Write H'00'
to TCNT
internal reset
is generated
Overflow
WOVF= 1*
515/516 states
WT/IT= 1
TME= 1
Write H'00'
to TCNT
Time