SH7014 Datasheet, PDF(333/754 Page) Renesas Technology Corp – 32-Bit RISC Microcomputer

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SH7014 Datasheet, PDF (333/754 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

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TCNT

value

H'FF

11. Watchdog Timer (WDT)

Overflow

H'00

Time

WT/IT = 1

TME = 1

H'00 written

in TCNT

WOVF = 1 WT/IT = 1

TME = 1

WDTOVF and

internal reset generated

H'00 written

in TCNT

WDTOVF

signal

Internal

reset signal*

128 Ï clocks

Legend:

WT/IT: Timer mode select bit

TME: Timer enable bit

512 Ï clocks

Note: * Internal reset signal occurs only when the RSTE bit is set to 1.

Figure 11.4 Operation in the Watchdog Timer Mode

Rev.5.00 Sep. 27, 2007 Page 299 of 716

REJ09B0398-0500

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