PIC18F2331-E/ML MICROCHIP [Microchip Technology], PIC18F2331-E/ML Datasheet - Page 254
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PIC18F2331-E/ML
Manufacturer Part Number
PIC18F2331-E/ML
Description
28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F2331-EML.pdf
(392 pages)
- Current page: 254 of 392
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PIC18F2331/2431/4331/4431
21.9.1
The ADRESH:ADRESL register pair is the location
where the 10-bit A/D result is loaded at the completion
of the A/D conversion. This register pair is 16 bits wide.
The A/D module gives the flexibility to left or right justify
the 10-bit result in the 16-bit result register. The A/D
FIGURE 21-5:
EQUATION 21-3:
DS39616D-page 254
Sequential Mode:
T = (T
Simultaneous Mode:
T = T
ACQ
ACQ
A/D RESULT REGISTER
+ (T
)
A
+ (T
7
CON
0000 00
CON
)
ADRESH
A
+ (T
A/D RESULT JUSTIFICATION
CONVERSION TIME FOR MULTI-CHANNEL MODES
)
A
+ [(T
CON
Right Justified
2 1 0 7
ADFM = 1
ACQ
)
B
+ T
10-Bit Result
)
B
ACQ
– 12 T
ADRESL
+ (T
AD
CON
] + (T
)
C
0
CON
+ (T
10-Bit Result
)
CON
B
+ [(T
)
D
ACQ
)
Format Select bit (ADFM) controls this justification.
Figure 21-5
justification. The extra bits are loaded with ‘0’s. When
an A/D result will not overwrite these locations (A/D
disable), these registers may be used as two general
purpose 8-bit registers.
C
– 12 T
7
AD
ADRESH
10-Bit Result
] + (T
shows the operation of the A/D result
CON
Left Justified
ADFM = 0
)
C
0 7 6 5
+ [(T
2010 Microchip Technology Inc.
ADRESL
ACQ
0000 00
)
D
– 12 T
0
AD
] + (T
CON
)
D
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