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M38K09RFS Datasheet(PDF) 206 Page - Renesas Technology Corp

Part # M38K09RFS
Description  RENESAS 8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 38000 SERIES
PDF  328 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

M38K09RFS Datasheet(HTML) 206 Page - Renesas Technology Corp

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2.8 Watchdog timer
Rev.2.00
Oct 05, 2006
page 77 of 111
38K0 Group
REJ09B0337-0200
APPLICATION
2.8 Watchdog timer
This paragraph explains the registers setting method and the notes related to the watchdog timer.
2.8.1 Memory map
Fig. 2.8.1 Memory map of registers related to watchdog timer
2.8.2 Related registers
Fig. 2.8.2 Structure of Watchdog timer control register
003916
Watchdog timer control register (WDTCON)
003B16
CPU mode register (CPUM)
Watchdog timer control register
b7 b6 b5 b4 b3 b2 b1 b0
B
Function
At reset
RW
0
1
2
3
4
5
6
7
Name
1
1
1
1
1
1
0
0
Watchdog timer control register (WDTCON) [Address : 3916]
Watchdog timer H (for read-out of high-order 6 bits)
STP instruction disable bit
0 : STP instruction enabled
1 : STP instruction disabled
Watchdog timer H count
source selection bit
0 : Watchdog timer L underflow
1 : System clock/16
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