PIC18F6621-I/PT Microchip Technology Inc., PIC18F6621-I/PT Datasheet - Page 270

• Manufacturer Part Number: PIC18F6621-I/PT
• Description: 64 PIN, 64 KB FLASH, 3840 RAM, 52 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F6621-I/PT

• A/d Inputs: 12-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 10 MIPS
• Eeprom Memory: 1024 Bytes
• Input Output: 54
• Interface: I2C/SPI/UART/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 64-pin TQFP
• Programmable Memory: 64K Bytes
• Ram Size: 3.8K Bytes
• Speed: 40 MHz
• Timers: 2-8-bit, 3-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC18F6525/6621/8525/8621
24.2.2
The WDT has a postscaler that can extend the WDT
Reset period. The postscaler is selected at the time of
the device programming by the value written to the
CONFIG2H Configuration register.
FIGURE 24-1:
TABLE 24-2:
DS39612B-page 268
CONFIG2H
RCON
WDTCON
Legend: Shaded cells are not used by the Watchdog Timer.
Name
WDT POSTSCALER
Configuration bit
Note:
WDTEN
SUMMARY OF REGISTERS ASSOCIATED WITH THE WATCHDOG TIMER
IPEN
Bit 7
—
—
WATCHDOG TIMER BLOCK DIAGRAM
WDTPS3:WDTPS0 are bits in register CONFIG2H.
WDT Timer
Bit 6
—
—
—
SWDTEN bit
Bit 5
—
—
—
WDTPS3
Bit 4
RI
—
WDTPS2
16-to-1 MUX
Postscaler
Bit 3
Time-out
TO
—
WDT
16
WDTPS2
Bit 2
PD
—
 2005 Microchip Technology Inc.
WDTPS3:WDTPS0
WDTPS0
Bit 1
POR
—
SWDTEN
WDTEN
Bit 0
BOR