HD6412350 Hitachi, HD6412350 Datasheet - Page 537

• Manufacturer Part Number: HD6412350
• Description: (HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
• Manufacturer: Hitachi

12.1.3
Table 12-1 describes the WDT output pin.
Table 12-1 WDT Pin
Name
Watchdog timer overflow
12.1.4
The WDT has three registers, as summarized in table 12-2. These registers control clock selection,
WDT mode switching, and the reset signal.
Table 12-2 WDT Registers
Name
Timer control/status register
Timer counter
Reset control/status register
Notes: 1. Lower 16 bits of the address.
2. For details of write operations, see section 12.2.4, Notes on Register Access.
3. Only a write of 0 is permitted to bit 7, to clear the flag.
Pin Configuration
Register Configuration
Symbol
WDTOVF
Abbreviation
TCSR
TCNT
RSTCSR
I/O
Output
R/W
R/(W)*
R/W
R/(W)*
Function
Outputs counter overflow signal in watchdog
timer mode
3
3
Initial Value
H'18
H'00
H'1F
Write*
H'FFBC
H'FFBC
H'FFBE
Address*
2
Read
H'FFBC
H'FFBD
H'FFBF
1
517