PIC18F4520-I/P Microchip Technology Inc., PIC18F4520-I/P Datasheet - Page 254

• Manufacturer Part Number: PIC18F4520-I/P
• Description: 40 Pin, 32 KB Flash, 1536 RAM, 36 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F4520-I/P

• A/d Inputs: 13-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 10 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 36
• Interface: I2C/SPI/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 40-pin PDIP
• Programmable Memory: 32K Bytes
• Ram Size: 1.5K 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

PIC18F2420/2520/4420/4520
REGISTER 23-3:
DS39631A-page 252
bit 7-5
bit 4-1
bit 0
Unimplemented: Read as ‘0’
WDTPS3:WDTPS0: Watchdog Timer Postscale Select bits
1111 = 1:32,768
1110 = 1:16,384
1101 = 1:8,192
1100 = 1:4,096
1011 = 1:2,048
1010 = 1:1,024
1001 = 1:512
1000 = 1:256
0111 = 1:128
0110 = 1:64
0101 = 1:32
0100 = 1:16
0011 = 1:8
0010 = 1:4
0001 = 1:2
0000 = 1:1
WDTEN: Watchdog Timer Enable bit
1 = WDT enabled
0 = WDT disabled (control is placed on the SWDTEN bit)
bit 7
CONFIG2H: CONFIGURATION REGISTER 2 HIGH (BYTE ADDRESS 300003h)
Legend:
R = Readable bit
-n = Value when device is unprogrammed
U-0
—
U-0
—
P = Programmable bit
U-0
Preliminary
—
WDTPS3
R/P-1
WDTPS2
R/P-1
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
WDTPS1
R/P-1
 2004 Microchip Technology Inc.
WDTPS0
R/P-1
WDTEN
R/P-1
bit 0