PIC18F4221-I/P Microchip Technology, PIC18F4221-I/P Datasheet - Page 266

• Manufacturer Part Number: PIC18F4221-I/P
• Description: IC PIC MCU FLASH 2KX16 400IP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F4221-I/P

• Program Memory Type: FLASH
• Program Memory Size: 4KB (2K x 16)
• Package / Case: 40-DIP (0.600", 15.24mm)
• 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: 36
• Eeprom Size: 256 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: EUSART/I2C/MSSP/SPI
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 36
• Number Of Timers: 4
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, ICE4000, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 13-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DVA18XP400 - DEVICE ADAPTER 18F4220 PDIP 40LD444-1001 - DEMO BOARD FOR PICMICRO MCUACICE0206 - ADAPTER MPLABICE 40P 600 MIL
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC18F4321 FAMILY
REGISTER 23-14: WDTCON: WATCHDOG TIMER CONTROL REGISTER
TABLE 23-2:
DS39689E-page 264
RCON
WDTCON
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used by the Watchdog Timer.
Note 1:
Name
The SBOREN bit is only available when the BOREN1:BOREN0 Configuration bits = 01; otherwise, it is
disabled and reads as ‘0’. See Section 4.4 “Brown-out Reset (BOR)”.
bit 7-1
bit 0
IPEN
Bit 7
—
SUMMARY OF WATCHDOG TIMER REGISTERS
bit 7
Unimplemented: Read as ‘0’
SWDTEN: Software Controlled Watchdog Timer Enable bit
1 = Watchdog Timer is on
0 = Watchdog Timer is off
Legend:
R = Readable bit
U = Unimplemented bit, read as ‘0’
SBOREN
Note 1: This bit has no effect if the Configuration bit, WDTEN, is enabled.
U-0
—
Bit 6
—
(1)
U-0
—
Bit 5
—
—
U-0
—
Preliminary
Bit 4
RI
—
U-0
—
Bit 3
TO
—
W = Writable bit
-n = Value at POR
U-0
—
Bit 2
PD
—
(1)
U-0
Bit 1
POR
—
—
© 2007 Microchip Technology Inc.
SWDTEN
U-0
—
Bit 0
BOR
SWDTEN
R/W-0
on page
Values
Reset
50
50
bit 0
(1)