PIC18F2431-I/SP Microchip Technology Inc., PIC18F2431-I/SP Datasheet - Page 247

• Manufacturer Part Number: PIC18F2431-I/SP
• Description: Microcontroller; 16 KB Flash; 768 RAM; 256 EEPROM; 24 I/O; 28-Pin-SPDIP
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F2431-I/SP

• A/d Inputs: 5-Channel, 10-Bit
• Cpu Speed: 10 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 24
• Interface: I2C/SPI/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 28-pin SPDIP
• Programmable Memory: 16K Bytes
• Ram Size: 768 Bytes
• Speed: 40 MHz
• Timers: 1-8-bit, 3-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

REGISTER 20-2:
 2003 Microchip Technology Inc.
bit 7-6 VCFG<1:0>: A/D V
bit 5
bit 4
bit 3
bit 2
bit 1-0 ADPNT<1:0>: Buffer Read Pointer Locations bits
00 =V
01 =V
10 =V
11 =V
Unimplemented: Read as ‘0’
FIFOEN: FIFO Buffer Enable bit
1 = FIFO is enabled
0 = FIFO is disabled
BFEMT: Buffer Empty bit
1 = FIFO is empty
0 = FIFO is not empty (at least one of four locations has unread A/D result data)
BFOVFL: Buffer Overflow bit
1 = A/D result has overwritten a buffer location that has unread data
0 = A/D result has not overflowed
Designates the location to be read next.
00 = Buffer address 0
01 = Buffer address 1
10 = Buffer address 2
11 = Buffer address 3
bit 7
Legend:
R = Readable bit
-n = Value at Reset
VCFG1
ADCON1: A/D CONTROL REGISTER 1
R/W-0
REF
REF
REF
REF
+ = AV
+ = External V
+ = AV
+ = External V
VCFG0
R/W-0
DD
DD
, V
, V
REF
REF
REF
+ and A/D V
REF
REF
PIC18F2331/2431/4331/4431
- = AV
- = External V
+, V
-, V
U-0
—
W = Writable bit
‘1’ = bit is set
Preliminary
REF
SS
REF
, (AN2 and AN3 are Analog inputs or Digital I/O)
- = External V
REF
- = AV
FIFOEN
R/W-0
- Source Selection bits
REF
SS
-, (AN3 is an Analog input or Digital I/O)
, (AN2 is an Analog input or Digital I/O)
REF
BFEMT
U = Unimplemented bit, read as ‘0’
‘0’ = bit is cleared
-
R-0
BFOVFL
R-0
ADPNT1
x = bit is unknown
R-0
DS39616B-page 245
ADPNT0
R-0
bit 0