參數(shù)資料
型號(hào)： M44C890
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： Low-Current Microcontroller for Wireless Communication
中文描述： 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO20
封裝： SSO-20
文件頁(yè)數(shù)： 48/63頁(yè)
文件大?。?/td> 503K
代理商： M44C890
M44C890
M44C090
Rev.A4, 14-Dec-01
48 (63)
Combination mode 1: Burst modulation
SSI mode 1:
8-bit NRZ and internal data SO output to the Timer 2 modulator stage
Timer 2 mode 1, 2, 3 or 4: 8-bit compare counter with 4-bit programmable prescaler and DCG
Timer 2 output mode 3:
Duty-cycle burst generator
1 2 0 1 2 0 1 2 0 1 2 0 1 2 0 1 2 0 1 2 0 1 2 0 1 2 0 1 2 0 1 2 0 1 2 0 1 2 0 1
DCGO
Counter 2
TOG2
SO
T2O
Counter = compare register (=2)
13785
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Figure 54. Carrier frequency burst modulation with the SSI internal data output
Combination mode 2: Biphase modulation 1
SSI mode 1:
8-bit shift register internal data output (SO) to the Timer 2 modulator stage
Timer 2 mode 1, 2, 3 or 4: 8-bit compare counter with 4-bit programmable prescaler
Timer 2 output mode 4:
The modulator 2 of Timer 2 modulates the SSI internal data output to Biphase code
TOG2
SC
SO
T2O
0
0
0
0
0
0
1
1
0
1
0
1
1
1
1
1
8-bit SR-data
Bit 7
Bit 0
13786
Data: 00110101
Figure 55. Biphase modulation 1
Combination mode 3: Manchester modulation 1
SSI mode 1:
8-bit shift register internal data output (SO) to the Timer 2 modulator stage
Timer 2 mode 1, 2, 3 or 4: 8-bit compare counter with 4-bit programmable prescaler
Timer 2 output mode 5:
The modulator 2 of Timer 2 modulates the SSI internal data output to Manchester code
TOG2
SC
SO
T2O
0
0
0
0
0
1
1
0
1
0
1
1
1
1
1
8-bit SR-data
Bit 7
0
Bit 0
13787
Bit 7
Bit 0
Data: 00110101
Figure 56. Manchester modulation 1
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