HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 412

• Manufacturer Part Number: HD6412340
• Description: H8S/2345 F-ZTAT Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

11.1.3
Table 11.1 describes the WDT output pin.
Table 11.1 WDT Pin
Name
Watchdog timer overflow
Note: * The WDTOVF pin function is not supported by the F-ZTAT version.
11.1.4
The WDT has three registers, as summarized in table 11.2. These registers control clock selection,
WDT mode switching, and the reset signal.
Table 11.2 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 11.2.4, 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 * Output
Abbreviation
TCSR
TCNT
RSTCSR
I/O
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
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