HD6417144 RENESAS [Renesas Technology Corp], HD6417144 Datasheet - Page 424

• Manufacturer Part Number: HD6417144
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

12. Watchdog Timer
12.2
Table 12.1 shows the pin configuration.
Table 12.1 Pin Configuration
Rev.4.00 Mar. 27, 2008 Page 380 of 882
REJ09B0108-0400
Pin
Watchdog timer overflow WDTOVF
Input/Output Pin
Internal reset
signal*2
ITI (interrupt
request signal)
[Legend]
TCSR:
TCNT:
RSTCSR: Reset control/status register
Notes: 1.
WDTOVF*1
2. The internal reset signal can be generated by register setting.
Timer control/status register
Timer counter
If this pin needs to be pulled-down,the resistance value must be 1MΩ or higher.
Power-on reset or manual reset can be selected.
Abbreviation
RSTCSR
Interrupt
control
Figure 12.1 Block Diagram of WDT
control
Reset
Overflow
Module bus
I/O
Output
TCNT
Clock
WDT
Function
Outputs the counter overflow signal in
watchdog timer mode
select
Clock
TSCR
Internal clock
sources
interface
Bus
φ/2
φ/64
φ/128
φ/256
φ/512
φ/1024
φ/4096
φ/8192