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| 型號： | EM6617TP28B |
| 英文描述： | Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 8-EPSOIC T&R |
| 中文描述： | 微控制器 |
| 文件頁數(shù)： | 3/67頁 |
| 文件大?。?/td> | 824K |
| 代理商： | EM6617TP28B |
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EM6617
03/02 REV. C/442
Copyright
2002, EM Microelectronic-Marin SA
11
www.emmicroelectronic.com
Table 5.4.1 Watchdog Timer Register RegSysCntl2
Bit
Name
Reset
R/W
Description
3
WDReset
0
R/W
Reset the Watchdog
1 -> Resets the Logic Watchdog
0 -> No action
The Read value is always '0'
2
SleepEn
0
R/W
See Operating modes (sleep)
1
WDVal1
0
R
Watchdog timer data Ck[1] divided by 4
0
WDVal0
0
R
Watchdog timer data Ck[1] divided by 2
Table 5.4.2 Watchdog Control Register RegSysCntl3
Bit
Name
Reset
R/W
Description
3
Vref1/2Sel
0
R/W
Reference selection for the ADC
2
--
0
R/W
always reads 0
1
NoOscWD
0
R/W
No oscillation supervisor
0
NoLogicWD
0
R/W
No logic watchdog
5.5 CPU State after Reset
Reset initializes the CPU as shown in Table 5.5.1 below.
Table 5.5.1 Initial CPU Value after Reset.
Name
Bits
Symbol
Initial Value
Program counter 0
12
PC0
hex 000 (as a result of Jump 0)
Program counter 1
12
PC1
Undefined
Program counter 2
12
PC2
Undefined
Stack pointer
2
SP
PSP[0] selected
Index register
7
IX
Undefined
Carry flag
1
CY
Undefined
Zero flag
1
Z
Undefined
Halt
1
HALT
0
Instruction register
16
IR
Jump 0
Periphery registers
4
Reg.
See peripheral memory map
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