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M32C/8A bảng dữ liệu(PDF) 136 Page - Renesas Technology Corp

tên linh kiện M32C/8A
Giải thích chi tiết về linh kiện  RENESAS MCU M16C FAMILY / M32C/80 Series
PDF  372 Pages
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nhà sản xuất  RENESAS [Renesas Technology Corp]
Trang chủ  http://www.renesas.com
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M32C/8A bảng dữ liệu(HTML) 136 Page - Renesas Technology Corp

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M32C/8A Group
12. Watchdog Timer
Rev.1.00
Jul 15, 2007
Page 119 of 352
REJ09B0385-0100
Figure 12.3
WDC Register, WDTS Register
b7
0
b6 b5 b4
b1
b2
b3
Watchdog Timer Control Register
Symbol
WDC
Address
000Fh
Bit Symbol
Bit Name
RW
−
(b4-b0)
After Reset
00XX XXXXb
b0
Function
WDC5
−
(b6)
Cold start/warm start determine
flag(1)
High-order bits of watchdog timer
WDC7
RW
Reserved bit
Prescaler select bit
RW
RW
RO
0: Cold start
1: Warm start
Set to 0
0: Divide-by-16
1: Divide-by-128
NOTES:
1. The WDC5 bit is 0 after power-on. It can be set to 1 only by program. The bit becomes 1 by writing either a 0 or 1.
The bit maintains a value set before reset, even after reset has been performed.
b7
Watchdog Timer Start Register
Symbol
WDTS
Address
000Eh
RW
Address
Undefined
b0
Function
The counter is initialized and starts decrementing by a write instruction to the WDTS register.
7FFFh is the default value after initialization no matter what value is written.
WO



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