PIC18F2221-E/SP Microchip Technology, PIC18F2221-E/SP Datasheet - Page 234

• Manufacturer Part Number: PIC18F2221-E/SP
• Description: 4KB, Flash, 512bytes-RAM, 25I/O, 8-bit Family,nanoWatt 28 SPDIP .300in TUBE
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F2221-E/SP

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 25
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 10x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DVA18XP280 - DEVICE ADAPTER 18F2220 PDIP 28LD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC18F2221/2321/4221/4321 FAMILY
REGISTER 20-2:
DS39689F-page 234
bit 7-6
bit 5
bit 4
bit 3-0
ADCON1: A/D CONTROL REGISTER 1
Unimplemented: Read as ‘0’
VCFG1: Voltage Reference Configuration bit (V
1 = V
0 = V
VCFG0: Voltage Reference Configuration bit (V
1 = V
0 = V
PCFG<3:0>: A/D Port Configuration Control bits
bit 7
Legend:
R = Readable bit
-n = Value at POR
PCFG<3:0>
A = Analog input
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Note 1: The POR value of the PCFG bits depends on the value of the PBADEN Con-
U-0
—
REF
SS
REF
DD
(1)
(1)
2: AN5 through AN7 are available only on 40/44-pin devices.
- (AN2)
+ (AN3)
figuration bit. When PBADEN = 1, PCFG<3:0> = 0000; when PBADEN = 0,
PCFG<3:0> = 0111.
D
D
D
D
D
D
D
D
D
D
D
D
D
A
A
A
U-0
—
A
A
A
A
D
D
D
D
D
D
D
D
D
D
D
D
VCFG1
R/W-0
D
D
D
D
D
D
D
D
D
D
D
A
A
A
A
A
W = Writable bit
‘1’ = Bit is set
A
A
A
A
A
A
D
D
D
D
D
D
D
D
D
D
VCFG0
R/W-0
A
A
A
A
A
A
A
D
D
D
D
D
D
D
D
D
D = Digital I/O
REF
REF
A
A
A
A
A
A
A
A
D
D
D
D
D
D
D
D
R/W-0
PCFG3
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
- source)
+ source)
A
A
A
A
A
A
A
A
A
D
D
D
D
D
D
D
(1)
A
A
A
A
A
A
A
A
A
A
D
D
D
D
D
D
PCFG2
R/W
© 2009 Microchip Technology Inc.
(1)
A
A
A
A
A
A
A
A
A
A
A
D
D
D
D
D
x = Bit is unknown
D
D
D
D
A
A
A
A
A
A
A
A
A
A
A
A
PCFG1
R/W
(1)
A
A
A
A
A
A
A
A
A
A
A
A
A
D
D
D
D
D
A
A
A
A
A
A
A
A
A
A
A
A
A
A
PCFG0
R/W
bit 0
(1)
D
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A