PIC18F2431-E/SO Microchip Technology, PIC18F2431-E/SO Datasheet - Page 262

• Manufacturer Part Number: PIC18F2431-E/SO
• Description: IC MCU FLASH 8KX16 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F2431-E/SO

• Core Size: 8-Bit
• Program Memory Size: 16KB (8K x 16)
• Core Processor: PIC
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, Power Control PWM, QEI, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-SOIC (7.5mm Width)
• Controller Family/series: PIC18
• No. Of I/o's: 24
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 768Byte
• Cpu Speed: 40MHz
• No. Of Timers: 4
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: I3-DB18F4431 - BOARD DAUGHTER ICEPIC3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PIC18F2331/2431/4331/4431
20.9.1
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 20-5:
EQUATION 20-3:
DS39616C-page 260
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
Preliminary
10-Bit Result
)
CON
B
+ [(T
)
D
ACQ
)
Format Select bit (ADFM) controls this justification.
Figure 20-5 shows the operation of the A/D result
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
CON
Left Justified
ADFM = 0
)
C
0 7 6 5
+ [(T
© 2007 Microchip Technology Inc.
ADRESL
ACQ
0000 00
)
D
– 12 T
0
AD
] + (T
CON
)
D