PIC18F2221-E/ML Microchip Technology, PIC18F2221-E/ML Datasheet - Page 235

• Manufacturer Part Number: PIC18F2221-E/ML
• Description: 4KB, Flash, 512bytes-RAM, 25I/O, 8-bit Family,nanoWatt 28 QFN 6x6mm TUBE
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F2221-E/ML

• 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-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

REGISTER 20-3:
© 2009 Microchip Technology Inc.
bit 7
bit 6
bit 5-3
bit 2-0
ADCON2: A/D CONTROL REGISTER 2
PIC18F2221/2321/4221/4321 FAMILY
Legend:
R = Readable bit
-n = Value at POR
bit 7
ADFM: A/D Result Format Select bit
1 = Right justified
0 = Left justified
Unimplemented: Read as ‘0’
ACQT<2:0>: A/D Acquisition Time Select bits
111 = 20 T
110 = 16 T
101 = 12 T
100 = 8 T
011 = 6 T
010 = 4 T
001 = 2 T
000 = 0 T
ADCS<2:0>: A/D Conversion Clock Select bits
111 = F
110 = F
101 = F
100 = F
011 = F
010 = F
001 = F
000 = F
R/W-0
ADFM
Note 1: If the A/D F
RC
OSC
OSC
OSC
RC
OSC
OSC
OSC
AD
AD
AD
AD
AD
AD
AD
AD
(clock derived from A/D RC oscillator)
(clock derived from A/D RC oscillator)
added before the A/D clock starts. This allows the SLEEP instruction to be executed
before starting a conversion.
/64
/16
/4
/32
/8
/2
(1)
U-0
—
RC
ACQT2
R/W-0
clock source is selected, a delay of one T
W = Writable bit
‘1’ = Bit is set
ACQT1
R/W-0
ACQT0
(1)
(1)
R/W-0
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
ADCS2
R/W-0
CY
x = Bit is unknown
ADCS1
R/W-0
(instruction cycle) is
DS39689F-page 235
ADCS0
R/W-0
bit 0