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參數(shù)資料
| 型號(hào)： | M34501E4FP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, OTPROM, MICROCONTROLLER, PDSO20 |
| 封裝： | 5.30 X 12.60 MM, 1.27 MM PITCH, PLASTIC, SOP-20 |
| 文件頁(yè)數(shù)： | 49/118頁(yè) |
| 文件大小： | 952K |
| 代理商： | M34501E4FP |
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Rev.3.01
2005.02.07
page 34 of 112
REJ03B0104-0301
4501 Group
Table 13 Change of successive comparison register AD during A/D conversion
Comparison voltage (Vref) value
Change of successive comparison register AD
At starting conversion
±
1: 1st comparison result
3: 3rd comparison result
9: 9th comparison result
2: 2nd comparison result
8: 8th comparison result
A: 10th comparison result
1st comparison
2nd comparison
3rd comparison
After 10th comparison
completes
1
-----
0
1
2
0
1
3
0
8
0
9
0
A
A/D conversion result
VDD
2
VDD
2
VDD
2
VDD
2
VDD
4
VDD
4
VDD
8
VDD
1024
○○○
○
-------------
Fig. 30 Setting registers
A/D control register Q1
AIN1 pin selected
A/D conversion mode
0
001
(Bit 3)
(Bit 0)
(7) A/D conversion timing chart
Figure 29 shows the A/D conversion timing chart.
Fig. 29 A/D conversion timing chart
(8) How to use A/D conversion
How to use A/D conversion is explained using as example in which
the analog input from P21/AIN1 pin is A/D converted, and the high-
order 4 bits of the converted data are stored in address M(Z, X, Y)
= (0, 0, 0), the middle-order 4 bits in address M(Z, X, Y) = (0, 0, 1),
and the low-order 2 bits in address M(Z, X, Y) = (0, 0, 2) of RAM.
The A/D interrupt is not used in this example.
Select the AIN1 pin function and A/D conversion mode with the
register Q1 (refer to Figure 30).
Execute the ADST instruction and start A/D conversion.
Examine the state of ADF flag with the SNZAD instruction to de-
termine the end of A/D conversion.
Transfer the low-order 2 bits of converted data to the high-order
2 bits of register A (TALA instruction).
Transfer the contents of register A to M (Z, X, Y) = (0, 0, 2).
Transfer the high-order 8 bits of converted data to registers A
and B (TABAD instruction).
Transfer the contents of register A to M (Z, X, Y) = (0, 0, 1).
Transfer the contents of register B to register A, and then, store
into M(Z, X, Y) = (0, 0, 0).
ADST instruction
A/D conversion
completion flag (ADF)
62 machine cycles
DAC operation signal
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| M34501E4FP | 4-BIT, OTPROM, MICROCONTROLLER, PDSO20 |
| M34502M2-XXXFP | 4-BIT, MROM, MICROCONTROLLER, PDSO24 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M34501M2 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34501M2-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34501M4 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34501M4-XXXFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34502E4 | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
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