參數(shù)資料
型號: EM6517
廠商: Electronic Theatre Controls, Inc.
元件分類: 4位微控制器
英文描述: 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER
中文描述: 4位單片機(jī)的小型通用紅外遙控器
文件頁數(shù): 11/66頁
文件大小: 762K
代理商: EM6517
EM6517
FOR ENGINEERING ONLY
EM Microelectronic-Marin SA, 09/99, Rev. A/277
11
Table 5.4.1 Watchdog Timer Register RegSysCntl2
Bit
Name
3
WDReset
Reset
0
R/W
R/W
Description
Reset the Watchdog
1 -> Resets the Logic Watchdog
0 -> No action
The Read value is always ’0’
See Operating modes (sleep)
Watchdog timer data Ck[1] divided by 4
Watchdog timer data Ck[1] divided by 2
2
1
0
SleepEn
WDVal1
WDVal0
0
0
0
R/W
R
R
Table 5.4.2 Watchdog Control Register RegSysCntl3
Bit
Name
3
Vref1/2Sel
2
--
1
NoOscWD
0
NoLogicWD
Reset
0
0
0
0
R/W
R/W
R/W
R/W
R/W
Description
Reference selection for the ADC
always reads 0
No oscillation supervisor
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
Program counter 0
Program counter 1
Program counter 2
Stack pointer
Index register
Carry flag
Zero flag
Halt
Instruction register
Bits
12
12
12
2
7
1
1
1
16
Symbol
PC0
PC1
PC2
SP
IX
CY
Z
HALT
IR
Initial Value
hex 000 (as a result of Jump 0)
Undefined
Undefined
PSP[0] selected
Undefined
Undefined
Undefined
0
Jump 0
Periphery registers
4
Reg.
See peripheral memory map
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