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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： | 8/114页 |
| 文件大小： | 1653K |
| 代理商： | M37221M8-XXXSP |
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104
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
Address 00ED16
Addresses 00EE16
b7 b6 b5 b4 b3 b2 b1 b0
OSD clock selection register (CK) [Address 00ED16]
B
Name
Functions
After reset R W
OSD Clock Selection Register
0, 1 OSD clock
selection bits
(CK0,CK1)
0
Since the main clock is used as the
clock for display, the oscillation
frequency is limited. Because of this,
the character size in width (horizontal)
direction is also limited. In this case,
pins OSC1 and OSC2 are also used
as input ports P33 and P34 respectively.
The clock for OSD is supplied by connecting the
following across the pins OSC1 and OSC2.
a ceramic resonator only for OSD
a quartz-crystal oscillator only for OSD and a
feedback resistor (See note)
2 to 7
0
b1
The clock for display is supplied by connecting RC
or LC across the pins OSC1 and OSC2.
Functions
00
b0
OSD oscillation
frequency
= f(XIN)
OSD oscillation
frequency
= f(XIN)/1.5
Note: It is necessary to connect other ceramic resonator or quartz-crystal oscillator for OSD across the pINs XIN and XOUT.
0
1
Fix these bits to “0.”
R W
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 —
—
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M37221MAH-XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER |
| M37221MAH-XXXSP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER |
| M37224M3 | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER |
| M37224M3-050SP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER |
| M37224M3-XXXSP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER |
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