HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 613

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

13.1.3
Table 13.1 describes the WDT output pin.
Table 13.1 WDT Pin
Name
Watchdog timer overflow
Note: * The WDTOVF pin function cannot be used in the F-ZTAT versions.
13.1.4
The WDT has three registers, as summarized in table 13.2. These registers control clock selection,
WDT mode switching, and the reset signal.
Table 13.2 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 13.2.4, 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
Rev.6.00 Sep. 27, 2007 Page 583 of 1268
3
3
Initial Value
H'18
H'00
H'1F
Section 13 Watchdog Timer
Write *
H'FFBC
H'FFBC
H'FFBE
REJ09B0220-0600
Address *
2
Read
H'FFBC
H'FFBD
H'FFBF
1