PIC18F2221-E/ML Microchip Technology, PIC18F2221-E/ML Datasheet - Page 266

• 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

PIC18F2221/2321/4221/4321 FAMILY
REGISTER 24-8:
REGISTER 24-9:
DS39689F-page 266
bit 7-2
bit 1
bit 0
bit 7
bit 6
bit 5
bit 4-0
CONFIG6L: CONFIGURATION REGISTER 6 LOW (BYTE ADDRESS 30000Ah)
CONFIG6H: CONFIGURATION REGISTER 6 HIGH (BYTE ADDRESS 30000Bh)
bit 7
Unimplemented: Read as ‘0’
WRT1: Write Protection bit
1 = Block 1 not write-protected
0 = Block 1 write-protected
WRT0: Write Protection bit
1 = Block 0 not write-protected
0 = Block 0 write-protected
Legend:
R = Readable bit
-n = Value when device is unprogrammed
bit 7
WRTD: Data EEPROM Write Protection bit
1 = Data EEPROM not write-protected
0 = Data EEPROM write-protected
WRTB: Boot Block Write Protection bit
1 = Boot block not write-protected
0 = Boot block write-protected
WRTC: Configuration Register Write Protection bit
1 = Configuration registers (300000-3000FFh) not write-protected
0 = Configuration registers (300000-3000FFh) write-protected
Unimplemented: Read as ‘0’
Legend:
R = Readable bit
-n = Value when device is unprogrammed
WRTD
Note 1: See Figure 24-5 for variable block boundaries.
R/C-1
Note 1: This bit is read-only in normal execution mode; it can be written only in Program mode.
U-0
—
2: See Figure 24-5 for block boundaries.
WRTB
R/C-1
U-0
—
WRTC
C = Clearable bit
C = Clearable bit
(1)
(1)
R-1
U-0
—
(2)
(1)
(1)
(1)
(2)
U-0
—
U-0
—
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
(1)
U-0
—
U-0
—
U-0
U-0
—
© 2009 Microchip Technology Inc.
—
WRT1
R/C-1
U-0
—
WRT0
R/C-1
U-0
—
bit 0
bit 0