参数资料
型号: M37221M8-XXXSP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP42
封装: 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-42
文件页数: 62/114页
文件大小: 1653K
代理商: M37221M8-XXXSP
50
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
M37221M4/M8/MA–XXXSP, M37221M6–XXXSP/FP
M37221EASP/FP
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
Fig. 8.8.2 A-D Control Register 1
b7 b6 b5 b4 b3 b2 b1 b0
A-D control register 1 (AD1) [Address 00EE16]
B
After reset RW
A-D Control Register 1
0
to
2
Analog input pin selection
bits
(ADM0 to ADM2)
Name
Functions
b2 b1 b0
0
0 : A-D1
0
1 : A-D2
0
1
0 : A-D3
0
1
1 : A-D4
1
0
0 : A-D5
1
0
1 : A-D6
1
0 : Do not set
1
1 : Do not set
4
Storage bit of comparison
result (ADM4)
0: Input voltage < reference voltage
1: Input voltage > reference voltage
0
Indeterminate
0
3
This bit is a write disable bit.
When this bit is read out, the value is “0.”
RW
R
R —
0
5
to
7
Nothing is assigned. This bits are write disable bits.
When these bits are read out, the values are “0.”
R —
Fig. 8.8.3 A-D Control Register 2
b7 b6 b5 b4 b3 b2 b1 b0
A-D control register 2 (AD2) [Address 00EF16]
B
After reset
R W
A-D Control Register 2
0
to
5
6, 7
0
Name
Functions
D-A converter set bits
(ADC0 to ADC5)
b0
b1
b2
b3
b4
b5
Nothing is assigned. These bits are write disable bits.
When these bits are reed out, the values are “ 0.”
1
00000
0
00000
0
0000
0
111
1
11111
1
11111
1
: 3/128Vcc
: 5/128Vcc
: 123/128Vcc
: 125/128Vcc
: 127/128Vcc
: 1/128Vcc
R W
R —
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