參數資料
型號： M37220M3-010SP
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
中文描述： 單芯片8位CMOS微機電壓合成與屏幕顯示控制器
文件頁數： 25/53頁
文件大小： 1281K
代理商： M37220M3-010SP
MITSUBISHI MICROCOMPUTERS
M37220M3-XXXSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
25
P3
0
output structure selection bit
0 : CMOS output
1 : N-channel open-drain output
0
7
Port P3 output mode control
register
(P3S: address 00CD
16
)
P3
1
output structure selection bit
0 : CMOS output
1 : N-channel open-drain output
DA1 output enable bit
0 : P3
0
input/output
1 : DA1 output
DA2 output enable bit
0 : P3
1
input/output
1 : DA2 output
Data bus
DA1 output enable bit
Resistor ladder
DA1 conversion register
P3
0
/A-D5/DA1
(address 00DE
16
)
6
P3
1
/A-D6/DA2
6
Resistor ladder
DA2 conversion register
(address 00DF
16
)
DA2 output enable bit
0
7
DA1 conversion register
(DA1: address 00DE
16
)
DA2 conversion register
(DA2: address 00DF
16
)
AAAAA
AAAAA
DA conversion set bits
Refer to Table 4.
Fix this bit to “0.”
0
D-A CONVERTER
The M37220M3-XXXSP has 2 D-A converters with 6-bit resolution.
D-A converter block diagram is shown in Figure 22.
D-A conversion is performed by setting the value in the DA conver-
sion register. The result of D-A conversion is output from the DA pin
by setting “1” to the DA output enable bit of the port P3 output mode
control register (bits 2 and 3 at address 00CD
16
).
The output analog voltage V is determined with the value n (n: deci-
mal number) in the DA conversion register.
V = V
CC
n
64
The DA output does not build in a buffer, so connect an external
buffer when driving a low-impedance load.
Fig. 20 Structure of D-A converter register
Fig. 22. D-A converter block diagram
D-A conversion register
Bit 4
0
0
0
0
Bit 1
0
0
1
0
1
1
Bit 0
0
1
0
1
0
1
Table 4. Relation between contents of D-A conversion register and
output voltage
1
1
1
Bit 3
0
0
1
1
1
Bit 2
0
0
0
1
1
1
Bit 5
0
0
0
1
1
1
0/64 V
CC
1/64 V
CC
2/64 V
CC
61/64 V
CC
62/64 V
CC
63/64V
CC
Output
voltage “V”
…
…
…
…
…
…
…
Fig.21. Structure of port P3 output mode register
相關PDF資料
PDF描述
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相關代理商/技術參數
參數描述
M37220M3-155SP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37220M3-157SP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37220M3-160SP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37220M3-167SP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37220M3-XXXSP 制造商:RENESAS 制造商全稱: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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