HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 431

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

11.1.3
Table 11.1 describes the WDT output pin.
Table 11.1 WDT Pin
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
Notes: 1. Lower 16 bits of the address.
Name
Watchdog timer overflow
Name
Timer control/status register
Timer counter
Reset control/status register
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
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
Rev.3.00 Mar. 26, 2007 Page 389 of 772
Initial Value
H'18
H'00
H'1F
Section 11 Watchdog Timer
Write*
H'FFBC
H'FFBC
H'FFBE
REJ09B0355-0300
Address*
2
Read
H'FFBC
H'FFBD
H'FFBF
1