The PIC18F2XK20/4XK20 family offers the advantages of all PIC18 microcontrollers – namely, high computational performance at an economical price – with the addition of high-endurance, Flash program memory. On top of these features, the PIC18F2XK20/4XK20 family introduces design enhancements that make these microcontrollers a logical choice for many highperformance, power sensitive applications.

High Performance RISC CPU:

   C Compiler Optimized Architecture:

   Optional extended instruction set designed tooptimize re-entrant code

   Up to 1024 bytes Data EEPROM

   Up to 64 Kbytes Linear program memoryaddressing

   Up to 3936 bytes Linear data memory addressing

   Up to 16 MIPS operation

   16-bit wide instructions, 8-bit wide data path

   Priority levels for interrupts

   31-level, software accessible hardware stack

   8 x 8 single-cycle hardware multiplier

Flexible Oscillator Structure:

   Precision 16 MHz internal oscillator block:

   Factory calibrated to ± 1%

   Software selectable frequencies range of31 kHz to 16 MHz

   64 MHz performance available using PLL

  no external components required

   Four crystal modes up to 64 MHz

   Two external clock modes up to 64 MHz

   4X Phase Lock Loop (PLL)

   Secondary oscillator using Timer1 @ 32 kHz

   Fail-Safe Clock Monitor:

   Allows for safe shutdown if peripheral clockstops

   Two-Speed Oscillator Start-up

Special Microcontroller Features:

   Operating Voltage Range: 1.8V to 3.6V

   Self-Programmable under Software Control

   Programmable 16-Level High/Low-Voltage

Detection (HLVD) module:

   Interrupt on High/Low-Voltage Detection

   Programmable Brown-out Reset (BOR):

   With software enable option

   Extended Watchdog Timer (WDT):

   Programmable period from 4 ms to 131s

   Single-Supply 3V In-Circuit SerialProgramming™ (ICSP™) via two pins

   In-Circuit Debug (ICD) via Two Pins

Extreme Low-Power Managementwith nanoWatt XLP™:

   Sleep mode: 100 nA

   Watchdog Timer: 500 nA

   Timer1 Oscillator: 500 nA @ 32 kHz

Analog Features:

   Analog-to-Digital Converter (ADC) module :

   10-bit resolution, 13 External Channels

   Auto-acquisition capability

   Conversion available during Sleep

   1.2V Fixed Voltage Reference (FVR) channel

   Independent input multiplexing

   Analog Comparator module:

   Two rail-to-rail analog comparators

   Independent input multiplexing

   Voltage Reference (CVREF) module

   Programmable (% VDD), 16 steps

   Two 16-level voltage ranges using VREF pins

Peripheral Highlights:

   Up to 35 I/O pins plus 1 input-only pin:

   High-Current Sink/Source 25 mA/25 mA

   Three programmable external interrupts

   Four programmable interrupt-on-change

   Eight programmable weak pull-ups

   Programmable slew rate

   Capture/Compare/PWM (CCP) module

   Enhanced CCP (ECCP) module:

   One, two or four PWM outputs

   Selectable polarity

   Programmable dead time

   Auto-Shutdown and Auto-Restart

   Master Synchronous Serial Port (MSSP) module

   3-wire SPI (supports all 4 modes)

   I2C™ Master and Slave modes with address

mask

Enhanced Universal Synchronous AsynchronousReceiver Transmitter (EUSART) module:

   Supports RS-485, RS-232 and LIN

   RS-232 operation using internal oscillator

   Auto-Wake-up on Break

   Auto-Baud Detect