PIC18F2450 MICROCHIP [Microchip Technology], PIC18F2450 Datasheet - Page 293
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PIC18F2450
Manufacturer Part Number
PIC18F2450
Description
28/40/44-Pin, High-Performance, 12 MIPS, Enhanced Flash, USB Microcontrollers with nanoWatt Technology
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F2450.pdf
(320 pages)
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TABLE 21-17: A/D CONVERTER CHARACTERISTICS: PIC18F2450/4450 (INDUSTRIAL)
FIGURE 21-14:
© 2006 Microchip Technology Inc.
Param
A01
A03
A04
A06
A07
A10
A20
A21
A22
A25
A30
A50
Note 1:
No.
Note 1:
A/D DATA
SAMPLE
A/D CLK
2:
ADRES
Symbol
N
E
E
E
E
—
V
V
V
Z
I
BSF ADCON0, GO
REF
ADIF
V
REFH
REFL
AIN
AIN
IL
DL
OFF
GN
R
GO
2:
REF
The A/D conversion result never decreases with an increase in the input voltage and has no missing codes.
V
V
Q4
REFH
REFL
If the A/D clock source is selected as RC, a time of T
to be executed.
This is a minimal RC delay (typically 100 ns), which also disconnects the holding capacitor from the analog input.
132
Resolution
Integral Linearity Error
Differential Linearity Error
Offset Error
Gain Error
Monotonicity
Reference Voltage Range
(V
Reference Voltage High
Reference Voltage Low
Analog Input Voltage
Recommended Impedance of
Analog Voltage Source
V
current is from RA2/AN2/V
current is from RA3/AN3/V
REF
REFH
A/D CONVERSION TIMING
Input Current
– V
Characteristic
REFL
(Note 2)
)
9
(2)
8
Advance Information
REF
REF
OLD_DATA
- pin or V
7
+ pin or V
SAMPLING STOPPED
V
SS
. . .
V
Min
V
CY
1.8
REFL
—
—
—
—
—
—
—
—
– 0.3V
3
SS
SS
is added before the A/D clock starts. This allows the SLEEP instruction
DD
, whichever is selected as the V
. . .
, whichever is selected as the V
131
130
Guaranteed
PIC18LF2450/4450 (INDUSTRIAL)
Typ
—
—
—
—
—
—
—
—
—
—
—
—
—
2
PIC18F2450/4450
(1)
V
1
DD
V
V
<±1.5
Max
<±1
<±1
<±1
150
REFH
REFH
2.5
10
—
—
– 3.0V
5
0
Units
LSb
LSb
LSb
LSb
k
bit
—
V
V
V
V
V
A
A
REFL
REFH
V
V
V
During V
During A/D conversion
cycle.
NEW_DATA
DONE
V
V
V
V
V
SS
DD
DD
source.
REF
REF
REF
REF
REF
source.
DS39760A-page 291
< 3.0V
Conditions
T
V
3.0V
CY (1)
AIN
AIN
3.0V
3.0V
3.0V
3.0V
3.0V
acquisition.
V
REF
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