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參數資料
型號: W921C880
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 4-Bit Microcontroller(4位微控制器)
中文描述: 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP80
封裝: QFP-80
文件頁數: 32/57頁
文件大小: 372K
代理商: W921C880
W921E880A/W921C880
- 32 -
TM3CR REG: (ADDRESS = 02FH)
(Default data = 0H)
b3
b2
b1
b0
b1 b0
Input frequency (fTM3)
0
0
0
1
1
0
1
1
fsys/2 Hz
fsys/4 Hz
fsys/8 Hz
fsys/16 Hz
b3 b2
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
1
0
0
0
0
1
1
0
1
1
1
1
0
0
0
0
0
1
1
0
fsys/32 Hz
fsys/64 Hz
fsys/128 Hz
fsys/256 Hz
fsys/512 Hz
fsys/1024 Hz
fsys/2048 Hz
The Timer 3 Set REG. is divided into TIMER 3 MSB DATA REG. (TM3MSB REG, ADDRESS = 030H,
Default = 0FH) and TIMER 3 LSB DATA REG. (TM3LSB REG, ADDRESS = 031H, Default = 0FH).
The format of the Status of Timer 3 Register is shown as follows:
STTM3 REG: (ADDRESS = 032H)
(Default data = 0H)
b3
b2
b1
b0
0:Timer 3 stop
1:Timer 3 start
0:Timer 3 auto_reload disable
1:Timer 3 auto-reload enable
Reserved
Reserved
6.11.1 Arbitrary Waveform Generator
Both TM1 and TM2 have arbitrary waveform generator circuits. The following description describes
their opeation.
TYPE 0 :
NT
256T
NT
T
TYPE 1 :
N = 0 Will keep the waveform in the high state.
N = 1 Will keep the waveform in the low state.
Note: N is the value stored in the TM1 Set Reg. (TM1MSB, TM1LSB) or TM2 Set Reg. (TM2MSB, TM2LSB)
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