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PIC16C925-S/CL データシート(PDF) 160 Page - Microchip Technology

部品番号 PIC16C925-S/CL
部品情報  64/68-Pin CMOS Microcontrollers with LCD Driver
PDF  182 Pages
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メーカー  MICROCHIP [Microchip Technology]
ホームページ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16C925-S/CL データシート(HTML) 160 Page - Microchip Technology

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PIC16C925/926
DS39544A-page 158
Preliminary
 2001 Microchip Technology Inc.
FIGURE 15-16:
A/D CONVERSION TIMING
TABLE 15-12: A/D CONVERSION REQUIREMENTS
131
130
132
BSF ADCON0, GO
Q4
A/D CLK
A/D DATA
ADRES
ADIF
GO
SAMPLE
OLD_DATA
SAMPLING STOPPED
DONE
NEW_DATA
134
9
8
7
...
...
2
1
0
133
133
Param
No.
Sym
Characteristic
Min
Typ†
Max
Units
Conditions
130
TAD
A/D clock period
PIC16C925/926
1.6
——
µsTOSC based, VREF ≥ 3.0V
PIC16LC925/926
3.0
——
µsTOSC based, VREF ≥ 2.0V
PIC16C925/926
2.0
4.0
6.0
µs
A/D RC Mode
PIC16LC925/926
3.0
6.0
9.0
µs
A/D RC Mode
131
TCNV
Conversion time (not including S/H time)
(Note 1)
——
12
TAD
132
TACQ
Acquisition time
(Note 2)
10
40
—
—
—
µs
µs
The minimum time is the amplifier
settling time. This may be used if
the “new” input voltage has not
changed by more than 1 LSb (i.e.,
5 mV @ 5.12V) from the last sam-
pled voltage (as stated on CHOLD).
134
TGO
Q4 to A/D clock start
—
TOSC/2
——
If the A/D clock source is selected
as RC, a time of TCY is added
before the A/D clock starts. This
allows the SLEEP instruction to be
executed.
135
TSWC
Switching from convert
→ sample time
1.5
——
TAD
†
Data in “Typ” column is at 5V, 25
°C unless otherwise stated. These parameters are for design guidance only and are not
tested.
Note
1:
ADRES register may be read on the following TCY cycle.
2: See Section 10.1 for min. conditions.



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