PIC18C252-I/SO Microchip Technology, PIC18C252-I/SO Datasheet - Page 186

• Manufacturer Part Number: PIC18C252-I/SO
• Description: IC MCU OTP 16KX16 A/D 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 18Cr

Specifications of PIC18C252-I/SO

• Core Size: 8-Bit
• Program Memory Size: 32KB (16K x 16)
• Core Processor: PIC
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Type: OTP
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Controller Family/series: PIC18
• No. Of I/o's: 24
• Ram Memory Size: 1536Byte
• Cpu Speed: 40MHz
• No. Of Timers: 4
• Interface: I2C, SPI, USART
• Package: 28SOIC W
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 40 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 23
• Interface Type: I2C/SPI/USART
• On-chip Adc: 5-chx10-bit
• Number Of Timers: 4
• Embedded Interface Type: I2C, SPI, USART
• Rohs Compliant: Yes
• Processor Series: PIC18C
• Core: PIC
• Data Ram Size: 1536 B
• Maximum Clock Frequency: 40 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: ICE2000, DM163022, DV164136
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT28SO-1 - SOCKET TRANSITION 28SOIC 300MILI3DB18C452 - BOARD DAUGHTER ICEPIC3309-1073 - ADAPTER 28-SOIC TO 28-SOIC309-1024 - ADAPTER 28-SOIC TO 28-DIP309-1023 - ADAPTER 28-SOIC TO 28-DIP
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

PIC18CXX2
18.2.2
The WDT has a postscaler that can extend the WDT
Reset period. The postscaler is selected at the time of
device programming, by the value written to the
CONFIG2H configuration register.
FIGURE 18-1:
TABLE 18-2:
DS39026C-page 184
CONFIG2H
RCON
WDTCON
Legend: Shaded cells are not used by the Watchdog Timer.
Name
WDT POSTSCALER
Note:
Configuration bit
WDTEN
SUMMARY OF WATCHDOG TIMER REGISTERS
IPEN
Bit 7
WDPS2:WDPS0 are bits in register CONFIG2H.
—
—
WATCHDOG TIMER BLOCK DIAGRAM
WDT Timer
LWRT
Bit 6
—
—
SWDTEN bit
Bit 5
—
—
—
Bit 4
—
RI
—
WDTPS2
8 - to - 1 MUX
Postscaler
Bit 3
Time-out
TO
—
WDT
8
WDTPS2
Bit 2
PD
—
2000 Microchip Technology Inc.
WDTPS2:WDTPS0
WDTPS0
Bit 1
POR
—
SWDTEN
WDTEN
Bit 0
BOR