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M38046F8HKP Datasheet(PDF) 122 Page - Renesas Technology Corp

No. de pieza M38046F8HKP
Descripción Electrónicos  8-BIT CISC SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 38000 SERIES
PDF  387 Pages
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Fabricante Electrónico  RENESAS [Renesas Technology Corp]
Página de inicio  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

M38046F8HKP Datasheet(HTML) 122 Page - Renesas Technology Corp

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1-104
REJ09B0212-0100Z
Rev.1.00
Jan 14, 2005
3804 Group (Spec.H)
HARDWARE
FUNCTIONAL DESCRIPTION SUPPLEMENT
0
Figure 95 shows A/D conversion equivalent circuit, and Figure 96
shows A/D conversion timing chart.
Fig. 95 A/D conversion equivalent circuit
VSS
VCC
AVSS
VCC
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
VREF
AVSS
Vref
VIN
C
b1
b2
b0
AN8
AN9
AN10
AN11
AN12
AN13
AN14
AN15
b4
AD/DA control register
Built-in
D/A converter
Reference
clock
AD conversion register 1
AD conversion register 2
Sampling
clock
Chopper amplifier
AD conversion interrupt request
About 2 k
Ω
✽1–✽8: A result of the first to eighth comparison
Table 23 Change of AD conversion register during A/D conversion (at 8-bit A/D mode)
At start of conversion
First comparison
Second comparison
Third comparison
After completion of
eighth comparison
0
0
VREF
2
±
Change of AD conversion register
Value of comparison voltage (Vref)
••
•
••
•
••
•
000
0
0
0
VREF
2
VREF
2
±
VREF
4
VREF
4
±
VREF
8
VREF
2
±
VREF
4
±
••• ±
VREF
256
A result of A/D conversion
✽ 13
456
7
8
2
✽
✽
✽✽✽✽
✽
1
000
0
0
0
0
10
0
0
0
0
0
1
1
00
0
0
0
21
✽
✽
✽
–
VREF
512
–
VREF
512
–
VREF
512
–
VREF
512



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