PIC18F8525-E/PT Microchip Technology, PIC18F8525-E/PT Datasheet - Page 270

• Manufacturer Part Number: PIC18F8525-E/PT
• Description: IC PIC MCU FLASH 24KX16 80TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F8525-E/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: EBI/EMI, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 69
• Program Memory Size: 48KB (24K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 3.75K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 16x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 80-TFQFP
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 3840 B
• Interface Type: MSSP, SPI, I2C, EUSART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 69
• Number Of Timers: 2 x 8 bit
• Operating Supply Voltage: 4.2 V to 5.5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• 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, DM163032
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 16 bit
• For Use With: XLT80PT3 - SOCKET TRAN ICE 80MQFP/TQFPAC164320 - MODULE SKT MPLAB PM3 80TQFPAC174011 - MODULE SKT PROMATEII 80TQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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