PIC18F2510 MICROCHIP [Microchip Technology], PIC18F2510 Datasheet - Page 352
PIC18F2510
Manufacturer Part Number
PIC18F2510
Description
28/40/44-PIN FLASH MICROCONTROLLERS WITH 10-BIT A/D AND NANO WATT TECHNOLOGY
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F2510.pdf
(380 pages)
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PIC18F2X1X/4X1X
FIGURE 25-23:
TABLE 25-25: A/D CONVERSION REQUIREMENTS
DS39636A-page 350
130
131
132
135
TBD
Legend: TBD = To Be Determined
Note 1:
Param
No.
A/D CLK
Note 1:
2:
3:
4:
A/D DATA
SAMPLE
T
T
T
T
T
ADRES
Symbol
BSF ADCON0, GO
AD
CNV
ACQ
SWC
DIS
ADIF
The time of the A/D clock period is dependent on the device frequency and the T
ADRES register may be read on the following T
The time for the holding capacitor to acquire the “New” input voltage when the voltage changes full scale
after the conversion (V
On the following cycle of the device clock.
GO
2:
Q4
(1)
If the A/D clock source is selected as RC, a time of T
This allows the SLEEP instruction to be executed.
This is a minimal RC delay (typically 100 ns), which also disconnects the holding capacitor from the analog input.
A/D Clock Period
Conversion Time
(not including acquisition time) (Note 2)
Acquisition Time (Note 3)
Switching Time from Convert
Discharge Time
132
A/D CONVERSION TIMING
(Note 2)
Characteristic
DD
9
to V
SS
PIC18FXXXX
PIC18LFXXXX
PIC18FXXXX
PIC18LFXXXX
8
or V
OLD_DATA
SS
7
Preliminary
Sample
to V
. . .
SAMPLING STOPPED
DD
CY
). The source impedance (R
CY
is added before the A/D clock starts.
cycle.
. . .
131
130
TBD
TBD
TBD
Min
0.7
1.4
1.4
0.2
11
—
2
(Note 4)
25.0
25.0
Max
12
—
—
—
1
3
(1)
(1)
1
Units
T
AD
s
s
s
s
s
s
s
S
2004 Microchip Technology Inc.
) on the input channels is 50 .
0
T
V
T
A/D RC mode
V
-40 C to +85 C
0 C
OSC
OSC
DD
DD
AD
= 2.0V;
= 2.0V; A/D RC mode
based, V
based, V
clock divider.
to
NEW_DATA
DONE
Conditions
+85 C
T
CY
REF
REF
full range
3.0V
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