PIC18F-LF1XK50 Datasheet, PDF (10/420 Pages) Microchip Technology – 20-Pin USB Flash Microcontrollers

PIC18F1XK50/PIC18LF1XK50
1.2 Other Special Features
• Memory Endurance: The Flash cells for both
program memory and data EEPROM are rated to
last for many thousands of erase/write cycles – up to
1K for program memory and 100K for EEPROM.
Data retention without refresh is conservatively
estimated to be greater than 40 years.
• Self-programmability: These devices can write
to their own program memory spaces under
internal software control. Using a bootloader
routine located in the code protected Boot Block,
it is possible to create an application that can
update itself in the field.
• Extended Instruction Set: The PIC18F/
LF1XK50 family introduces an optional extension
to the PIC18 instruction set, which adds 8 new
instructions and an Indexed Addressing mode.
This extension has been specifically designed to
optimize re-entrant application code originally
developed in high-level languages, such as C.
• Enhanced CCP module: In PWM mode, this
module provides 1, 2 or 4 modulated outputs for
controlling half-bridge and full-bridge drivers.
Other features include:
- Auto-Shutdown, for disabling PWM outputs
on interrupt or other select conditions
- Auto-Restart, to reactivate outputs once the
condition has cleared
- Output steering to selectively enable one or
more of 4 outputs to provide the PWM signal.
• Enhanced Addressable USART: This serial
communication module is capable of standard
RS-232 operation and provides support for the LIN
bus protocol. Other enhancements include
automatic baud rate detection and a 16-bit Baud
Rate Generator for improved resolution.
• 10-bit A/D Converter: This module incorporates
programmable acquisition time, allowing for a
channel to be selected and a conversion to be
initiated without waiting for a sampling period and
thus, reduce code overhead.
• Extended Watchdog Timer (WDT): This
enhanced version incorporates a 16-bit
postscaler, allowing an extended time-out range
that is stable across operating voltage and
temperature. See Section 27.0 “Electrical
Specifications” for time-out periods.
1.3 Details on Individual Family
Members
Devices in the PIC18F/LF1XK50 family are available in
20-pin packages. Block diagrams for the two groups
are shown in Figure 1-1.
The devices are differentiated from each other in the
following ways:
1. Flash program memory:
• 8 Kbytes for PIC18F13K50/PIC18LF13K50
• 16 Kbytes for PIC18F14K50/PIC18LF14K50
2. On-chip 3.2V LDO regulator for PIC18F13K50
and PIC18F14K50.
All other features for devices in this family are identical.
These are summarized in Table 1-1.
The pinouts for all devices are listed in Table 1 and I/O
description are in Table 1-2.
DS41350E-page 10
Preliminary
 2010 Microchip Technology Inc.