PIC18F65K22-E/PT - 64MHz 8-Bit MCU 32KB Flash 64-TQFP | Microchip
MPN: PIC18F65K22-E/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.85 | $6.85 |
| 10 | $6.17 | $61.70 |
| 100 | $5.48 | $548.00 |
| 500 | $4.93 | $2,465.00 |
| 1,000 | $4.39 | $4,390.00 |
PIC18F65K22-E/PT Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), and peripherals such as timers, A/D converters, and communication interfaces onto a single silicon die. Within Microchip's PIC family, the PIC18F sub-family is an 8-bit enhanced Harvard architecture optimized for high code density and C-compiler efficiency. The "K22" suffix denotes the nanoWatt XLP variant targeting low-power and battery-powered designs, while the "65" prefix indicates the 64-pin/80-pin large-pin-count family.
Key differentiating features include nanoWatt XLP extreme low-power technology with sub-microA sleep currents, an integrated Charge Time Measurement Unit (CTMU) that simplifies capacitive touch sensing, a 12-bit A/D converter with up to 16 input channels, multiple Enhanced USART, MSSP (SPI/I2C), and ECAN peripherals, and a wide operating temperature range from -40C to +125C for the "-E" extended temperature grade. The device also supports ICD (In-Circuit Debugger) via two interface pins.
Typical applications span industrial control panels, capacitive touch human-machine interfaces (HMIs), automotive body and chassis subsystems, low-power remote sensor nodes, and battery-powered metering. The integrated ECAN peripheral and large I/O count make it particularly attractive for CAN-based distributed control systems. Selection between the "-E" (extended -40C to +125C) and "-I" (industrial -40C to +85C) temperature grades depends on the deployment environment; pin and feature sets are otherwise identical between grades.
When designing with the PIC18F65K22-E/PT, observe the 4.2V minimum VDD requirement and place a 100 nF decoupling capacitor adjacent to each power pin. Use the CTMU for robust capacitive touch designs, and configure the internal 16 MHz HFINTOSC to reduce external BOM cost in space-constrained layouts.
This page synthesizes distributor pricing, drop-in TQFP-64 alternatives, and practical design notes not found in the manufacturer datasheet alone, providing an integrated resource for component evaluation and procurement.
Drop-in alternatives for PIC18F65K22-E/PT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC18F65K22-E/PT (same form factor and footprint) — differing in Package, Timers, Operating Temperature Range, I/O Pins, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F65K22-I/PT
✅ Drop-In✓ In Stock
$3.45 / Unit
View Datasheet →PIC18F65K22T-E/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F65K22T-I/PT
✅ Drop-In✓ In Stock
$2.88 / Unit
View Datasheet →PIC18LF65K22-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F65K22-E/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 (8-bit Harvard) |
| Program Memory (Flash) | 32 KB (16K x 16) |
| RAM | 2 KB |
| EEPROM | 1 KB |
| Maximum CPU Speed | 64 MHz (16 MIPS) |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| I/O Pins | 53 (of 64 package pins) |
| A/D Converter | 12-bit, up to 16 channels |
| Timers | 8-bit/16-bit, CCP, RTCC |
| Communication | 2x Enhanced USART, 2x MSSP (SPI/I2C), ECAN |
| Special Features | nanoWatt XLP, CTMU (Capacitive Touch), ICD |
| Operating Temperature | -40C to +125C (Extended -E grade) |
| Package | 64-TQFP (10x10 mm, MS-026) |
| Mounting Type | Surface Mount |
| MSL Level | 3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Programming Method | In-Circuit Serial Programming (ICSP) / ICD |
PIC18F65K22-E/PT Pin Configuration
| Pin 1 | NC — Not connected (per datasheet) |
| Pin 2 | NC — Not connected (per datasheet) |
| Pin 3 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Pin 4 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Pin 5 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| Pin 6 | RA3/AN3/VREF+ — Port A bit 3 / Analog input 3 / VREF+ |
| Pin 7 | RA4/AN4/TOCKI — Port A bit 4 / Analog input 4 / Timer0 clock input |
| Pin 8 | RA5/AN5/SS1 — Port A bit 5 / Analog input 5 / SPI1 slave select |
| Pin 9 | RA6/OSC2/CLKO — Port A bit 6 / Oscillator output / Clock output |
| Pin 10 | RA7/OSC1/CLKI — Port A bit 7 / Oscillator input / Clock input |
| Pin 11 | VDD — Positive supply voltage (4.2V-5.5V) |
| Pin 12 | VSS — Ground reference |
| Pin 13 | RB0/AN12/INT0 — Port B bit 0 / Analog input 12 / External interrupt 0 |
| Pin 14 | RB1/AN10/INT1 — Port B bit 1 / Analog input 10 / External interrupt 1 |
| Pin 15 | RB2/AN8/INT2 — Port B bit 2 / Analog input 8 / External interrupt 2 |
| Pin 16 | RB3/AN9/CCP2 — Port B bit 3 / Analog input 9 / CCP2 module |
| Pin 17 | RB4/AN11 — Port B bit 4 / Analog input 11 |
| Pin 18 | RB5/AN13 — Port B bit 5 / Analog input 13 |
| Pin 19 | RB6/PGC — Port B bit 6 / ICSP clock (ICD) |
| Pin 20 | RB7/PGD — Port B bit 7 / ICSP data (ICD) |
| Pin 21 | RC0/SOSCO — Port C bit 0 / Secondary oscillator output |
| Pin 22 | RC1/SOSCI — Port C bit 1 / Secondary oscillator input |
| Pin 23 | RC2/CCP1 — Port C bit 2 / CCP1 module |
| Pin 24 | RC3/REFO — Port C bit 3 / Reference clock output |
| Pin 25 | RC4/SDI2 — Port C bit 4 / SPI2 data input |
| Pin 26 | RC5/SDO2 — Port C bit 5 / SPI2 data output |
| Pin 27 | RC6/TX1/CK1 — Port C bit 6 / USART1 transmit / clock |
| Pin 28 | RC7/RX1/DT1 — Port C bit 7 / USART1 receive / data |
| Pin 29 | RD0/PSP0 — Port D bit 0 / Parallel Slave Port bit 0 |
| Pin 30 | RD1/PSP1 — Port D bit 1 / Parallel Slave Port bit 1 |
| Pin 31 | RD2/PSP2 — Port D bit 2 / Parallel Slave Port bit 2 |
| Pin 32 | RD3/PSP3 — Port D bit 3 / Parallel Slave Port bit 3 |
| Pin 33 | RD4/PSP4 — Port D bit 4 / Parallel Slave Port bit 4 |
| Pin 34 | RD5/PSP5 — Port D bit 5 / Parallel Slave Port bit 5 |
| Pin 35 | RD6/PSP6 — Port D bit 6 / Parallel Slave Port bit 6 |
| Pin 36 | RD7/PSP7 — Port D bit 7 / Parallel Slave Port bit 7 |
| Pin 37 | VSS — Ground reference |
| Pin 38 | VDD — Positive supply voltage (4.2V-5.5V) |
| Pin 39 | RE0/AN5 — Port E bit 0 / Analog input 5 |
| Pin 40 | RE1/AN6 — Port E bit 1 / Analog input 6 |
| Pin 41 | RE2/AN7 — Port E bit 2 / Analog input 7 |
| Pin 42 | RE3/AN15 — Port E bit 3 / Analog input 15 |
| Pin 43 | RF0/AN16 — Port F bit 0 / Analog input 16 |
| Pin 44 | RF1/AN17 — Port F bit 1 / Analog input 17 |
| Pin 45 | RF2 — Port F bit 2 |
| Pin 46 | RF3 — Port F bit 3 |
| Pin 47 | RF4 — Port F bit 4 |
| Pin 48 | RF5 — Port F bit 5 |
| Pin 49 | RF6 — Port F bit 6 |
| Pin 50 | RF7 — Port F bit 7 |
| Pin 51 | RG0 — Port G bit 0 |
| Pin 52 | RG1 — Port G bit 1 |
| Pin 53 | RG2 — Port G bit 2 |
| Pin 54 | RG3 — Port G bit 3 |
| Pin 55 | RG4 — Port G bit 4 |
| Pin 56 | MCLR/RE5 — Master clear reset input / Port E bit 5 |
| Pin 57 | AVDD — Analog positive supply |
| Pin 58 | AVSS — Analog ground |
| Pin 59 | NC — Not connected (per datasheet) |
| Pin 60 | NC — Not connected (per datasheet) |
| Pin 61 | NC — Not connected (per datasheet) |
| Pin 62 | NC — Not connected (per datasheet) |
| Pin 63 | NC — Not connected (per datasheet) |
| Pin 64 | NC — Not connected (per datasheet) |
Typical Applications
PIC18F65K22-E/PT is suitable for 6 applications: Capacitive Touch HMI Panels, Industrial CAN Bus Sensor Hubs, Automotive Body Control Modules, Battery-Powered Remote Sensor Nodes, Programmable Logic Controllers (PLCs), Medical Monitoring Equipment.
Capacitive Touch HMI Panels
The PIC18F65K22-E/PT's integrated Charge Time Measurement Unit (CTMU) and large 53-I/O count make it ideal for capacitive touch HMI panels used in industrial control equipment. With 12-bit A/D resolution across up to 16 channels, the MCU simultaneously scans touch buttons, sliders, and proximity sensors while driving LCD segments or TFT displays via SPI. The nanoWatt XLP low-power modes allow battery-backed HMI designs with sub-microamp sleep currents, extending coin-cell runtime to multi-year levels when the panel is idle. Unlike external capacitive touch controllers, the on-chip CTMU eliminates per-button BOM cost and reduces PCB area, fitting cost-sensitive home appliance and access control designs.
Recommended
Industrial CAN Bus Sensor Hubs
The PIC18F65K22-E/PT's integrated ECAN peripheral supports CAN 2.0B at up to 1 Mbit/s, making it a natural fit for industrial sensor hubs that aggregate field sensor data and broadcast over CANopen or DeviceNet networks. The MCU's 12-bit A/D with up to 16 input channels digitizes multiple analog sensor outputs (temperature, pressure, flow) while ECAN handles deterministic bus arbitration. The -40C to +125C extended temperature grade (E suffix) supports outdoor cabinet and factory-floor mounting without additional thermal conditioning. Compared with adding an external CAN controller IC, the on-chip ECAN saves board area and BOM cost in retrofit and OEM designs.
Recommended
Automotive Body Control Modules
The PIC18F65K22-E/PT operates from -40C to +125C and integrates ECAN, multiple timers, and 53 I/O pins, suiting it to automotive body control modules that manage lighting, door locks, mirrors, and wiper subsystems. With 32 KB Flash and 2 KB SRAM, the MCU runs autoSAR-lite or vendor RTOS firmware stacks for body-electronics coordination. ECAN interfaces to vehicle CAN bus for diagnostics and gateway functions, while the high I/O count drives multiple high-side switches directly via MOSFET pre-drivers. Unlike AEC-Q100-qualified parts, this -E temp grade device is widely deployed in non-safety-critical body control and aftermarket automotive designs.
Recommended
Battery-Powered Remote Sensor Nodes
The PIC18F65K22-E/PT's nanoWatt XLP technology with sub-microamp sleep currents extends battery life in remote sensor nodes deployed in wireless HVAC, agriculture, or smart-city monitoring. Sleep currents below 1 microampere (typical at 3V with RTCC running) allow a 2.4V lithium AA pack to power the node for multi-year deployments without maintenance. The MCU wakes periodically to digitize sensor data via the 12-bit A/D, transmits via Enhanced USART-connected radio module, and returns to sleep. The 32 KB Flash is ample for sensor-fusion algorithms and over-the-air update staging buffers.
Recommended
Programmable Logic Controllers (PLCs)
Compact PLC designs use the PIC18F65K22-E/PT as the central processing unit with its 53 I/O pins handling multiple digital inputs (sensors, limit switches) and outputs (relays, contactors) without external I/O expanders. The 12-bit A/D monitors analog process variables (temperature, pressure, level) while ECAN or RS-485 Enhanced USART ports connect to HMI panels or supervisory SCADA. With 16 MIPS throughput, the MCU executes ladder-logic interpreters and PID control loops at cycle times suitable for mid-speed process control. The wide 4.2V-5.5V supply range supports 24V industrial bus rails with local regulation.
Recommended
Medical Monitoring Equipment
The PIC18F65K22-E/PT's deterministic 16 MIPS execution, integrated 12-bit A/D, and wide temperature range suit it to non-invasive medical monitoring peripherals such as pulse oximeters, blood pressure monitors, and patient thermometers. The MCU drives small graphic LCDs or OLEDs via SPI to display vital signs while running filtering algorithms in real time. The Enhanced USART links to wireless modules (Bluetooth, Wi-Fi companion chips) for telemetry to mobile caregiver apps. The CTMU can also implement low-cost capacitive fluid-level sensing for infusion pump reservoirs, demonstrating flexibility in regulated medical device designs.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F65K22-E/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F65K22-I/PT | PIC18F65K22T-E/PT | PIC18F65K22T-I/PT | PIC18LF65K22-I/PT |
|---|---|---|---|---|---|
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Operating Temperature | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Supply Voltage (VDD) | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 1.8 V to 3.6 V |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| Maximum CPU Speed | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) |
| Packaging Format | Tray (E/PT suffix) | Tray | Tape & Reel | Tape & Reel | Tray |
Key Differentiators
- Extended temperature grade for harsh environments (vs PIC18F65K22-I/PT)
- Standard 5V VDD operation (vs PIC18LF65K22-I/PT)
- Tray packaging format suitable for low-volume and prototype builds (vs PIC18F65K22T-E/PT)
Design Notes
The PIC18F65K22-E/PT requires a 4.2V-5.5V VDD supply. Place a 100 nF decoupling capacitor adjacent to each VDD/VSS pin pair (pin 11/12, pin 38/37, pin 57/58) and a bulk 10 uF tantalum or aluminum-polymer capacitor near the MCU power input. For noise-sensitive analog measurements, add a ferrite bead in series with AVDD and bypass it with a separate 100 nF + 10 uF RC network to prevent digital switching noise from coupling into the 12-bit A/D reference.
At 64 MHz CPU speed with all peripherals active, the PIC18F65K22-E/PT typically dissipates 60-90 mW. The 64-TQFP package thermal resistance (theta_JA) is approximately 50 C/W on a 4-layer JEDEC test PCB. In a -40C to +125C environment, ensure the junction temperature stays below the absolute maximum of 150C; design for at least 25C thermal margin by improving PCB copper area under the exposed pad (where present) or by reducing CPU clock when ambient exceeds 85C.
Route the ICPGD/ICPGD (RB6/RB7, pins 19/20) traces directly to a 6-pin ICSP header with no series resistors or capacitors in the path; in-circuit debug (ICD) requires clean access to these pins. Place the ICSP header at the board edge for easy probe access during production programming. Keep the ECAN TX/RX traces (RC6/RC7) matched in length and routed with a 50 ohm characteristic impedance if CAN bus speed exceeds 500 kbit/s.
Do not exceed the absolute maximum VDD of 5.5V (use PIC18LF65K22 instead for 3.3V rails). Ensure the MCLR pin (pin 56) has a 10 kohm pull-up to VDD and a 100 nF capacitor to ground for proper reset; floating MCLR causes intermittent brown-out failures. When migrating from PIC18F65K22-I/PT, verify the application operating temperature does not exceed +85C, or specify the -E grade explicitly.
Compliance Information
RoHS compliant per Microchip product page; the -E temperature grade supports automotive non-safety applications but is NOT AEC-Q100 qualified - choose AEC-Q100 qualified PIC18F variants for safety-critical automotive subsystems.
