| Parameter Name | Value |
| Program Memory Type | Flash |
| Program Memory (KB) | 64 |
| CPU Speed (MIPS) | 16 |
| RAM Bytes | 3,936 |
| Data EEPROM (bytes) | 1024 |
| Digital Communication Peripherals | 1-A/E/USART, 1-MSSP(SPI/I2C) |
| Capture/Compare/PWM Peripherals | 1 CCP, 1 ECCP |
| Timers | 1 x 8-bit, 3 x 16-bit |
| ADC | 13 ch, 10-bit |
| Comparators | 2 |
| Temperature Range (C) | -40 to 125 |
| Operating Voltage Range (V) | 1.8 to 3.6 |
| Pin Count | 40 |
| XLP | Yes |
| Part Number | Leads | Package Type | Temp Range | Packing |
| PIC18F46K20-E/ML | 44 | QFN | -40C to +125C | TUBE |
| PIC18F46K20-E/P | 40 | PDIP | -40C to +125C | TUBE |
| PIC18F46K20-E/PT | 44 | TQFP | -40C to +125C | TRAY |
| PIC18F46K20-I/ML | 44 | QFN | -40C to +85C | TUBE |
| PIC18F46K20-I/P | 40 | PDIP | -40C to +85C | TUBE |
| PIC18F46K20-I/PT | 44 | TQFP | -40C to +85C | TRAY |
| PIC18F46K20T-E/PT | 44 | TQFP | -40C to +125C | T/R |
| PIC18F46K20T-I/ML | 44 | QFN | -40C to +85C | T/R |
| PIC18F46K20T-I/P | 40 | PDIP | -40C to +85C | T/R |
| PIC18F46K20T-I/PT | 44 | TQFP | -40C to +85C | T/R |
| Data Sheets | |
| PIC18F2XK20/4XK20 28/40/44-Pin Flash MCU w/ 10-Bit A/D & nanoWatt Tech (Chinese) | Last Updated: 9/9/2008 |
| PIC18F2XK20/4XK20 28/40/44-Pin Flash MCU with 10-Bit A/D and nanoWatt Technology | Last Updated: 4/22/2009 |
| Errata | |
| PIC18F26K20/46K20 Rev. A4 Through A5 Silicon/Data Sheet Errata | Last Updated: 5/21/2008 |
| PIC18F26K20/46K20 Rev. B2/B3 Silicon/Data Sheet Errata | Last Updated: 8/3/2009 |
| Programming Specifications | |
| PIC18F2XK20/4XK20 Flash Memory Programming Specification | Last Updated: 8/25/2009 |
| Application Notes | |
| AN1066 - MiWi Wireless Networking Protocol Stack | Last Updated: 11/25/2008 |
| AN1095 - AN1095, Emulating Data EEPROM for PIC18 and PIC24 MCUs and dsPIC DSCs | Last Updated: 8/5/2008 |
| AN1204 - Microchip MiWi P2P Wireless Protocol | Last Updated: 11/25/2008 |
| AN1204 - Microchip MiWi P2P Wireless Protocol (Chinese) | Last Updated: 3/3/2009 |
| AN1229 - Class B Safety Software Library for PIC MCUs and dsPIC DSCs | Last Updated: 9/22/2008 |
| AN1229 - Class B Safety Software Library for PIC MCUs and dsPIC DSCs (Chinese) | Last Updated: 1/5/2009 |
| AN1267 - nanoWatt & nanoWatt XLP(TM) Technologies: An Introduction to Microchip's Low Power devices | Last Updated: 4/23/2009 |
| Brochures | |
| 8-bit PIC® Microcontroller Solutions | Last Updated: 2/17/2009 |
| aspxProductLineCard | |
| 8-bit Microcontroller Product Selector Guide | Last Updated: 8/5/2009 |
| Product Line Documents | |
| Last Updated: 9/9/2009 |
| Sell Sheets | |
| Choose PIC MCUs | Last Updated: 4/27/2009 |
| HI-TECH C Compilers by Microchip Technology | Last Updated: 4/8/2009 |
| nanoWatt XLP eXtreme Low Power MCUs Product Overview | Last Updated: 5/11/2009 |
| PIC18F Development Tools Product Overview | Last Updated: 12/19/2006 |
| Tips and Tricks | |
| PIC Microcontroller Compiled Tips 'n Tricks Guide | Last Updated: 4/22/2009 |
| PIC® MCU Tips 'n Tricks Featuring nanoWatt XLP Technology | Last Updated: 4/22/2009 |