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M32C/86 数据表(PDF) 145 Page - Renesas Technology Corp

部件名 M32C/86
功能描述  RENESAS 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES
PDF  505 Pages
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制造商  RENESAS [Renesas Technology Corp]
网页  http://www.renesas.com
标志 RENESAS - Renesas Technology Corp

M32C/86 数据表(HTML) 145 Page - Renesas Technology Corp

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Page 122
9
7
4
f
o
5
0
0
2
,
8
0
.
p
e
S
0
0
.
1
.
v
e
R
0
0
1
0
-
4
0
2
0
B
9
0
J
E
R
12. Watchdog Timer
)
T
6
8
/
C
2
3
M
,
6
8
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C
2
3
M
(
p
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G
6
8
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2
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M
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
RW
RO
RW
RW
RW
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.
b7
b6
b5
b4
b3
b2
b1
b0
0
Watchdog Timer Start Register(1)
Symbol
Address
After Reset
WDTS
000E16
Indeterminate
RW
WO
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.
b7
b0
Figure 12.2 WDC Register and WDTS Register



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