參數(shù)資料
型號: M34512M4
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
中文描述: 單芯片4位微機的CMOS
文件頁數(shù): 34/80頁
文件大?。?/td> 760K
代理商: M34512M4
34
4512 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
PRELIMINARY
Notice: This is not a final specification.
change.
Some parametric limits are subject to
Table 16 Change of successive comparison register AD during A-D conversion
Comparison voltage (V
ref
) value
Change of successive comparison register AD
-------------
At starting conversion
±
±
±
±
±
(7) Operation description
A-D conversion is started with the A-D conversion start instruction
(ADST). The internal operation during A-D conversion is as follows:
When A-D conversion starts, the register AD is cleared to
“000
16
.”
Next, the topmost bit of the register AD is set to “1,” and the
comparison voltage V
ref
is compared with the analog input volt-
age V
IN
.
When the comparison result is V
ref
< V
IN
, the topmost bit of the
register AD remains set to “1.” When the comparison result is
V
ref
> V
IN
, it is cleared to “0.”
The 4512 Group repeats this operation to the lowermost bit of the
register AD to convert an analog value to a digital value. A-D con-
version stops after 62 machine cycles (46.5
μ
s when f(X
IN
) = 4.0
MHz in high-speed mode) from the start, and the conversion result
is stored in the register AD. An A-D interrupt activated condition is
satisfied and the ADF flag is set to “1” as soon as A-D conversion
completes (Figure 27).
7
1: 1st comparison result
7
3: 3rd comparison result
7
9: 9th comparison result
7
2: 2nd comparison result
7
8: 8th comparison result
7
A: 10th comparison result
1st comparison
2nd comparison
3rd comparison
After 10th comparison
completes
1
7
1
7
1
7
1
0
1
7
2
7
2
0
0
1
7
3
0
0
0
7
8
0
0
0
7
9
0
0
0
7
A
A-D conversion result
V
DD
2
V
DD
2
V
DD
2
V
DD
2
V
DD
4
V
DD
4
V
DD
8
V
DD
1024
-------------
-------------
-------------
-------------
-------------
-------------
-------------
(8) A-D conversion timing chart
Figure 27 shows the A-D conversion timing chart.
Fig. 27 A-D conversion timing chart
ADST instruction
A-D conversion
completion flag (ADF)
62 machine cycles
DAC operation signal
相關(guān)PDF資料
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M34513M2 Hook-Up Wire; Conductor Size AWG:26; No. Strands x Strand Size:7 x 34; Jacket Color:White; Approval Bodies:UL, CSA; Approval Categories:UL AWM Style 1061; CSA AWM; Conductor Material:Copper; Jacket Material:Polyvinylchloride (PVC) RoHS Compliant: Yes
M34513M2-420FP Hook-Up Wire; Conductor Size AWG:26; No. Strands x Strand Size:7 x 34; Jacket Color:Black; Approval Bodies:UL, CSA; Approval Categories:UL AWM Style 1061; CSA AWM; Conductor Material:Copper; Jacket Material:Polyvinylchloride (PVC) RoHS Compliant: Yes
M34513M4 Hook-Up Wire; Conductor Size AWG:26; No. Strands x Strand Size:7 x 34; Jacket Color:Dark Blue; Approval Bodies:UL, CSA; Approval Categories:UL AWM Style 1061; CSA AWM; Conductor Material:Copper RoHS Compliant: Yes
M34513M4-051FP Hook-Up Wire; Conductor Size AWG:28; No. Strands x Strand Size:7 x 36; Jacket Color:Brown; Approval Bodies:UL, CSA; Approval Categories:UL AWM Style 1061; CSA AWM; Conductor Material:Copper; Jacket Material:Polyvinylchloride (PVC) RoHS Compliant: Yes
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