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参数资料
| 型号： | M37702M2BXXXFP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, MROM, 25 MHz, MICROCONTROLLER, PQFP80 |
| 封装： | QFP-80 |
| 文件页数： | 31/61页 |
| 文件大小： | 760K |
| 代理商： | M37702M2BXXXFP |
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34
MITSUBISHI MICROCOMPUTERS
M37702M2AXXXFP, M37702M2BXXXFP
M37702S1AFP, M37702S1BFP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
A-D CONVERTER
The A-D converter is an 8-bit successive approximation converter.
Figure 43 shows a block diagram of the A-D converter and Figure
44 shows the bit configuration of the A-D control register. The fre-
quency of the A-D converter operating clock
φAD is selected by the
bit 7 of the A-D control register. When bit 7 is “0”,
φAD is the clock
frequency divided by 8. That is,
φAD = f(XIN)/8. When bit 7 is “1”,
φAD is the clock frequency divided by 4 and φAD is = f(XIN)/4. The
φAD during A-D conversion must be 250 kHz minimum because
the comparator consists of a capacity coupling amplifier.
The operating mode is selected by the bits 3 and 4 of A-D control
register. The available operating modes are one-shot, repeat,
single sweep, and repeat sweep.
The bit of data direction register bit corresponding to the A-D con-
verter pin must be “0” (input mode) because the analog input port
is shared with port P7.
The operation of each mode is described below.
Fig 44
A-D control register bit configuration
Fig 43
A-D converter block diagram
Analog input selection bits
0 0 0 : Select AN0
0 0 1 : Select AN1
0 1 0 : Select AN2
0 1 1 : Select AN3
1 0 0 : Select AN4
1 0 1 : Select AN5
1 1 0 : Select AN6
1 1 1 : Select AN7
A-D operation mode selection bits
0 0 : One-shot mode
0 1 : Repeat mode
1 0 : Single sweep mode
1 1 : Repeat sweep mode
76
5432
0
1
A-D control register 1
Trigger selection bit
0 : Software trigger
1 : ADTRG input trigger
A-D conversion start flag
0 : Stop A-D conversion
1 : Start A-D conversion
Frequency selection flag
0 : Select f(XIN)/8
1 : Select f(XIN)/4
1E16
Address
Data bus (even)
Selector
AN0
AN1
AN2
AN3
AN4
AN7
ADTRG
AN5
AN6
Ladder network
Vref
Successive approximation register
Addresses
1/2
f2
f(XIN)
1/2
A-D register 0 (2016)
A-D register 1 (2216)
A-D register 2 (2416)
A-D register 3 (2616)
A-D register 4 (2816)
A-D register 5 (2A16)
A-D register 6 (2C16)
A-D register 7 (2E16)
Decoder
Comparator
A-D control register
(1E16)
VREF
AVSS
A-D conversion speed selection
φ AD
相关PDF资料 |
PDF描述 |
|---|---|
| M37702S1AFP | 16-BIT, 16 MHz, MICROCONTROLLER, PQFP80 |
| M37702M2AXXXFP | 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP80 |
| M37702S1BFP | 16-BIT, 25 MHz, MICROCONTROLLER, PQFP80 |
| M37702S1LGP | 16-BIT, 8 MHz, MICROCONTROLLER, PQFP80 |
| M37702S1LHP | 16-BIT, 8 MHz, MICROCONTROLLER, PQFP80 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M37702M2B-XXXFP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M37702M2L | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M37702M2L249HP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M37702M2L-249HP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M37702M2L-265HP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
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