M32CSLASH86 datasheet(145/505 Pages) RENESAS

Il numero della parte	M32C/86

Spiegazioni elettronici	RENESAS 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

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Page 122

12. Watchdog Timer

)

(

WDC7

WDC5

(b4 - b0)

(b6)

Reserved Bit

Prescaler Select Bit

Watchdog Timer Control Register

High-Order Bit of the Watchdog Timer

0 : Divide-by-16

1 : Divide-by-128

0 : Cold start-up

1 : Warm start-up

Set to "0"

Symbol

Address

After Reset

WDC

000F16

000X XXXX2

Bit Name

Function

Bit

Symbol

Cold Start-up/

Warm Start-up

Determine Flag(1,2, 3)

NOTES:

1. The WDC5 bit remains set to "1", regardless of setting to "1" or "0".

2. The WDC5 bit is set to "0" when power is turned on and can be set to "1" by program only.

3. The WDC5 bit maintains a value set before reset, even after reset has been performed.

Watchdog Timer Start Register(1)

Symbol

Address

After Reset

WDTS

000E16

Indeterminate

Function

The watchdog timer is reset to start counting by a write instruction to the

WDTS register. Default value of the watchdog timer is always set to

"7FFF16" regardless of the value written.

NOTES:

1. Write the WDTS register after the watchdog timer interrupt is generated.

Figure 12.2 WDC Register and WDTS Register

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