PIC18F27J53-I/SP Microchip Technology, PIC18F27J53-I/SP Datasheet - Page 360

• Manufacturer Part Number: PIC18F27J53-I/SP
• Description: IC PIC MCU 128KB FLASH 28SPDIP
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F27J53-I/SP

• Program Memory Type: FLASH
• Program Memory Size: 128KB (64K x 16)
• Package / Case: *
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: I²C, LIN, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Ram Size: 3.8K x 8
• Voltage - Supply (vcc/vdd): 2.15 V ~ 3.6 V
• Data Converters: A/D 10x10b/12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 3.8 KB
• Interface Type: I2C, SPI, USART
• Maximum Clock Frequency: 48 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 8
• Operating Supply Voltage: 2.15 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 40 C
• Controller Family/series: PIC18
• Cpu Speed: 48MHz
• Embedded Interface Type: I2C, SPI, USART
• Digital Ic Case Style: DIP
• Supply Voltage Range: 1.8V To 5.5V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC18(L)F2X/4XK22
24.2
For PIC18(L)F2X/4XK22 devices, the WDT is driven by
the LFINTOSC source. When the WDT is enabled, the
clock source is also enabled. The nominal WDT period
is 4 ms and has the same stability as the LFINTOSC
oscillator.
The 4 ms period of the WDT is multiplied by a 16-bit
postscaler. Any output of the WDT postscaler is
selected by a multiplexer, controlled by bits in Configu-
ration Register 2H. Available periods range from 4 ms
to 131.072 seconds (2.18 minutes). The WDT and
postscaler are cleared when any of the following events
occur: a SLEEP or CLRWDT instruction is executed, the
IRCF bits of the OSCCON register are changed or a
clock failure has occurred.
FIGURE 24-1:
DS41412D-page 360
Change on IRCF bits
Note 1: The CLRWDT and SLEEP instructions
LFINTOSC Source
All Device Resets
2: Changing the setting of the IRCF bits of
3: When a CLRWDT instruction is executed,
WDTPS<3:0>
Watchdog Timer (WDT)
clear the WDT and postscaler counts
when executed.
the OSCCON register clears the WDT
and postscaler counts.
the postscaler count will be cleared.
SWDTEN
CLRWDT
WDTEN
Sleep
WDT BLOCK DIAGRAM
Enable WDT
WDT Counter
128
4
Preliminary
Programmable Postscaler
1:1 to 1:32,768
Reset
 2010 Microchip Technology Inc.
WDT
Reset
Wake-up
from Power
Managed Modes