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参数资料
| 型号： | M34514M6-XXXFP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 4-BIT, MROM, 4.2 MHz, MICROCONTROLLER, PDSO42 |
| 封装： | 0.450 INCH, 0.80 MM PITCH, PLASTIC, SSOP-42 |
| 文件页数： | 39/96页 |
| 文件大小： | 1078K |
| 代理商： | M34514M6-XXXFP |
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44
4513/4514 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
(15) Notes for the use of A-D conversion 2
Do not change the operating mode (both A-D conversion mode and
comparator mode) of A-D converter with bit 3 of register Q2 while
A-D converter is operating.
When the operating mode of A-D converter is changed from the
comparator mode to A-D conversion mode with the bit 3 of register
Q2, note the following;
Clear bit 2 of register V2 to “0” to change the operating mode of
the A-D converter from the comparator mode to A-D conversion
mode with the bit 3 of register Q2.
The A-D conversion completion flag (ADF) may be set when the
operating mode of the A-D converter is changed from the com-
parator mode to the A-D conversion mode. Accordingly, set a
value to register Q2, and execute the SNZAD instruction to clear
the ADF flag.
(16) Definition of A-D converter accuracy
The A-D conversion accuracy is defined below (refer to Figure 30).
Relative accuracy
Zero transition voltage (V0T)
This means an analog input voltage when the actual A-D con-
version output data changes from “0” to “1.”
Full-scale transition voltage (VFST)
This means an analog input voltage when the actual A-D con-
version output data changes from “1023” to ”1022.”
Linearity error
This means a deviation from the line between V0T and VFST of
a converted value between V0T and VFST.
Differential non-linearity error
This means a deviation from the input potential difference re-
quired to change a converter value between V0T and VFST by 1
LSB at the relative accuracy.
Absolute accuracy
This means a deviation from the ideal characteristics between 0
to VDD of actual A-D conversion characteristics.
Fig. 30 Definition of A-D conversion accuracy
Vn: Analog input voltage when the output data changes from “n” to “n+1” (n = 0 to 1022)
1LSB at relative accuracy
→
(V)
1LSB at absolute accuracy
→
(V)
VFST–V0T
1022
VDD
1024
VDD
V1022
Vn
V1
V0
Vn+1
n+1
n
1022
1023
1
0
b
a
c
Output data
Differential non-linearity error =
Linearity error =
[LSB]
c
a
b–a
a
[LSB]
Actual A-D conversion
characteristics
a: 1LSB by relative accuracy
b: Vn+1–Vn
c: Difference between ideal Vn
and actual Vn
Zero transition voltage (V0T)
Analog voltage
Full-scale transition voltage (VFST)
Ideal line of A-D conversion
between V0–V1022
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M34514M8 | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34514M8-756FP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34514M8-759FP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34514M8-XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34518E8FP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
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