參數(shù)資料
型號: UPD75068
廠商: NEC Corp.
英文描述: 4-BIT SINGLE-CHIP MICROCOMPUTER
中文描述: 4位單片機
文件頁數(shù): 25/68頁
文件大?。?/td> 640K
代理商: UPD75068
25
μ
PD75064, 75066, 75068, 75064(A), 75066(A), 75068(A)
5.8 A/D Converter
The
μ
PD75068 contains an 8-bit analog/digital (A/D) converter that has eight analog input channels
(AN0 - AN7).
The A/D converter employs the successive-approximation method.
Figure 5-7. Block Diagram of A/D Converter
Internal bus
8
+
AN0/P110
AN1/P111
AN2/P112
AN3/P113
AN4/KR0/P60
AN5/KR1/P61
AN6/KR2/P62
AN7/KR3/P63
AV
REF
AV
SS
R
8
R
R/2
R/2
8
ADM
0
ADM1
EOC
SOC
ADM4
ADM5
ADM6
0
Control circuit
Multi-
plexer
Sample and hold circuit
Comparator
SA register (8)
Tap decoder
Series resistor string
R
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