PIC18F65K22T-I/PTRSL - 8-bit 32KB Flash MCU 64MHz | Microchip
MPN: PIC18F65K22T-I/PTRSL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $2.95 | $1,475.00 |
| 1,000 | $2.52 | $2,520.00 |
PIC18F65K22T-I/PTRSL Overview
An 8-bit microcontroller is a microprocessor core with an 8-bit data bus width, optimised for low cost, deterministic interrupt response, and simple peripheral integration. Within the broader hierarchy, the PIC18F family sits above baseline PIC10/12/16 cores and below the 16-bit PIC24/dsPIC and 32-bit PIC32 families. It belongs to the class of RISC microcontrollers (single-cycle instruction execution, 200 ns at 20 MHz) and is widely used in industrial control, consumer appliances, and battery-powered embedded systems where software simplicity and toolchain maturity matter.
Key differentiating features include nanoWatt XLP extreme-low-power technology with multiple sleep modes drawing under 100 nA, an integrated Charge Time Measurement Unit (CTMU) for capacitive touch and simple sensing, and configurable logic cells on select pins. The K22 series also adds a 12-bit A/D converter with computation, multiple Enhanced USART, MSSP (I2C/SPI) ports, and ECCP peripherals, delivering substantial analog and digital integration.
Architecturally, the part uses a 16-bit instruction word fetched from Flash and executed in a single cycle (4 clocks), giving 8 MIPS at 32 MHz and 16 MIPS at 64 MHz. The 31-level hardware stack and 32 interrupt vectors provide predictable real-time response. Internal oscillator accuracy of ±1% (with Fail-Safe Clock Monitor) eliminates the external crystal in many designs, reducing BOM cost.
Typical applications include capacitive touch user interfaces, low-power sensor nodes, white goods and appliance control panels, industrial instrumentation displays, and USB-to-UART bridges in embedded systems. Designers also choose this part for general-purpose 5V-tolerant designs that must remain compatible with legacy analog front ends.
When designing with the PIC18F65K22T-I/PTRSL, note the Industrial temperature grade (-40C to +85C) and the MSL 3 moisture sensitivity of the TQFP-64 package, requiring proper dry-pack handling during assembly. The PTRSL suffix designates a tape-and-reel package, while the operating-voltage suffix (I) denotes the industrial temperature range.
This page synthesizes distributor stock and pricing data, cross-references Microchip K22-family drop-in alternatives, and provides practical design notes not found in a single manufacturer datasheet.
Drop-in alternatives for PIC18F65K22T-I/PTRSL — 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 PIC18F65K22T-I/PTRSL (same form factor and footprint) — differing in Package, Timers, ADC, I/O Pins, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F65K22T-I/PT
✅ Drop-In✓ In Stock
$2.88 / Unit
View Datasheet →PIC18F65K22-I/PT
✅ Drop-In✓ In Stock
$3.45 / Unit
View Datasheet →PIC18F65K22-I/PTRSL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F65K22T-E/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F67K22-I/PTRSL
✅ Drop-In✓ In Stock
$5.08 / Unit
View Datasheet →PIC18F66K22-I/PT
✅ Drop-In✓ In Stock
$3.96 / Unit
View Datasheet →PIC18F65K22T-I/PTRSL Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 8-bit RISC |
| Program Memory (Flash) | 32 KB (16K x 16 words) |
| Data SRAM | 2 KB |
| Data EEPROM | 1 KB |
| Maximum CPU Speed | 64 MHz (16 MIPS) |
| Supply Voltage | 4.2 V to 5.5 V |
| I/O Pins | 54 |
| Package | TQFP-64 (10x10 mm, MS-026) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| ADC | 12-bit (multiple channels) |
| Low-Power Technology | nanoWatt XLP |
| CTMU | Yes (Charge Time Measurement Unit) |
| Communication Peripherals | Enhanced USART, MSSP (I2C/SPI), ECCP |
| Internal Oscillator | Yes (up to 64 MHz with PLL) |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
PIC18F65K22T-I/PTRSL Pin Configuration
| Pin 1 | RE3/MCLR — MCLR (master clear) input / digital I/O RE3 |
| Pin 2 | RA0 — PORTA digital I/O / analog input |
| Pin 3 | RA1 — PORTA digital I/O / analog input |
| Pin 4 | RA2 — PORTA digital I/O / analog input |
| Pin 5 | RA3 — PORTA digital I/O / analog input |
| Pin 6 | RA4 — PORTA digital I/O / analog input |
| Pin 7 | RA5 — PORTA digital I/O / analog input |
| Pin 8 | RA6 — PORTA digital I/O / oscillator |
| Pin 9 | RA7 — PORTA digital I/O / oscillator |
| Pin 10 | Vss — Ground reference |
| Pin 11 | VDD — Positive supply voltage |
| Pin 12 | RB0 — PORTB digital I/O / interrupt-on-change |
| Pin 13 | RB1 — PORTB digital I/O |
| Pin 14 | RB2 — PORTB digital I/O |
| Pin 15 | RB3 — PORTB digital I/O |
| Pin 16 | RB4 — PORTB digital I/O |
| Pin 17 | RB5 — PORTB digital I/O |
| Pin 18 | RB6 — PORTB digital I/O / ICSP clock |
| Pin 19 | RB7 — PORTB digital I/O / ICSP data |
| Pin 20 | Vss — Ground reference |
| Pin 21 | VDD — Positive supply voltage |
| Pin 22 | RC0 — PORTC digital I/O |
| Pin 23 | RC1 — PORTC digital I/O |
| Pin 24 | RC2 — PORTC digital I/O |
| Pin 25 | RC3 — PORTC digital I/O |
| Pin 26 | RC4 — PORTC digital I/O |
| Pin 27 | RC5 — PORTC digital I/O |
| Pin 28 | RC6 — PORTC digital I/O / UART TX |
| Pin 29 | RC7 — PORTC digital I/O / UART RX |
| Pin 30 | Vss — Ground reference |
| Pin 31 | VDD — Positive supply voltage |
| Pin 32 | RD0 — PORTD digital I/O |
| Pin 33 | RD1 — PORTD digital I/O |
| Pin 34 | RD2 — PORTD digital I/O |
| Pin 35 | RD3 — PORTD digital I/O |
| Pin 36 | RD4 — PORTD digital I/O |
| Pin 37 | RD5 — PORTD digital I/O |
| Pin 38 | RD6 — PORTD digital I/O |
| Pin 39 | RD7 — PORTD digital I/O |
| Pin 40 | Vss — Ground reference |
| Pin 41 | VDD — Positive supply voltage |
| Pin 42 | RE0 — PORTE digital I/O |
| Pin 43 | RE1 — PORTE digital I/O |
| Pin 44 | RE2 — PORTE digital I/O |
| Pin 45 | RF0 — PORTF digital I/O |
| Pin 46 | RF1 — PORTF digital I/O |
| Pin 47 | RF2 — PORTF digital I/O |
| Pin 48 | RF3 — PORTF digital I/O |
| Pin 49 | RF4 — PORTF digital I/O |
| Pin 50 | RF5 — PORTF digital I/O |
| Pin 51 | RF6 — PORTF digital I/O |
| Pin 52 | RF7 — PORTF digital I/O |
| Pin 53 | RG0 — PORTG digital I/O |
| Pin 54 | RG1 — PORTG digital I/O |
| Pin 55 | RG2 — PORTG digital I/O |
| Pin 56 | RG3 — PORTG digital I/O |
| Pin 57 | RG4 — PORTG digital I/O |
| Pin 58 | Vss — Ground reference |
| Pin 59 | VDD — Positive supply voltage |
| Pin 60 | RH0 — PORTH digital I/O |
| Pin 61 | RH1 — PORTH digital I/O |
| Pin 62 | RH2 — PORTH digital I/O |
| Pin 63 | RH3 — PORTH digital I/O |
| Pin 64 | RH4 — PORTH digital I/O |
Typical Applications
PIC18F65K22T-I/PTRSL is suitable for 7 applications: Capacitive Touch User Interface, Industrial Sensor Node with Display, White Goods and Appliance Control, Battery-Powered Wireless Sensor Hub, USB-to-UART Bridge for Embedded Systems, Portable Medical Monitoring Devices, Automotive Body Electronics (Non-Safety).
Capacitive Touch User Interface
The PIC18F65K22T-I/PTRSL's integrated Charge Time Measurement Unit (CTMU) measures capacitance changes on electrodes with sub-picofarad resolution, enabling reliable touch button, slider, and wheel sensing without dedicated touch ICs. With 54 I/O and nanoWatt XLP deep-sleep under 100 nA, it powers wake-on-touch interfaces on mains or battery operated panels. Placed as the main MCU reading up to 16 touch channels via time-multiplexed CTMU scans, the part delivers capacitive touch at lower BOM cost than dedicated solutions. The 64 MHz core executes touch firmware with low latency while sleep current stays low.
Recommended
Industrial Sensor Node with Display
In factory automation and process-control panels, the PIC18F65K22T-I/PTRSL reads 4-20 mA or 0-10 V analog sensors through its 12-bit ADC, drives an LCD or character display, and communicates via RS-485 UART or Modbus on the MSSP. The 64-pin TQFP provides enough I/O for multiple 7-segment displays, keypads, and indicator LEDs. Industrial -40C to +85C operation suits plant-floor enclosures. The combination of 32 KB Flash, 2 KB SRAM, and CTMU enables sensor calibration, touch HMI, and remote telemetry in one chip.
Recommended
White Goods and Appliance Control
Washing machines, dishwashers, and microwave ovens use the PIC18F65K22T-I/PTRSL for motor control via ECCP PWM outputs, sensor input via ADC, and front-panel HMI via keypad and character LCD. The K22 family's nanoWatt XLP technology lets the controller stay in standby under 1 uA between user interactions, while the 5V supply tolerance simplifies interface to legacy triac-driven AC loads. The wide 54-I/O count supports encoder, buzzer, and door-switch monitoring.
Recommended
Battery-Powered Wireless Sensor Hub
Remote sensor transmitters using the PIC18F65K22T-I/PTRSL benefit from nanoWatt XLP sleep currents below 100 nA, enabling multi-year battery life on a single CR2032 cell. The 64 MHz core wakes on RTCC alarm, takes ADC measurements, and transmits via UART-linked radio module. CTMU enables low-power capacitive water-level or proximity sensing. Industrial temperature grade supports outdoor enclosures.
Recommended
USB-to-UART Bridge for Embedded Systems
The PIC18F65K22T-I/PTRSL serves as a CDC-class USB-to-UART bridge for legacy RS-232 equipment, eliminating external USB-UART ICs. Its MSSP and Enhanced USART handle high-speed serial conversion, while 2 KB of SRAM buffers full-duplex traffic. Placed between a host USB port and a target board's UART pins, the part enumerates as a virtual COM port. The 5V-tolerant I/O simplifies direct connection to industrial sensors.
Recommended
Portable Medical Monitoring Devices
Patient-side monitors in clinics and home healthcare use the PIC18F65K22T-I/PTRSL for low-power data acquisition with the 12-bit ADC, RTC timestamped logging, and LCD display driving. The CTMU can measure bio-impedance or skin-contact capacitance for wearable sensors. Industrial temperature rating supports healthcare equipment that must operate in variable indoor environments. Field updates via self-programming Flash extend product lifecycle without service recalls.
Recommended
Automotive Body Electronics (Non-Safety)
The PIC18F65K22T-I/PTRSL is used in non-safety body control modules such as HVAC panels, seat controllers, and interior lighting where the -E (Extended) variant covers -40C to +125C. Its 5V supply tolerance matches the automotive 12V battery rail after regulation, and the CTMU handles capacitive proximity switches. Drop-in compatibility with PIC18F65K22T-E/PT allows the same PCB to be built in industrial or automotive variants, reducing platform complexity.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F65K22T-I/PTRSL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F65K22T-I/PT | PIC18F65K22-I/PT | PIC18F65K22-I/PTRSL | PIC18F65K22T-E/PT | PIC18F67K22-I/PTRSL | PIC18F66K22-I/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (10x10 mm) | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 128 KB | 64 KB |
| SRAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 4 KB | 4 KB |
| Max CPU Speed | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C |
| Supply Voltage | 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 | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V |
| I/O Pins | 54 | 54 | 54 | 54 | 54 | 54 | 54 |
| CTMU | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Unit Price (qty-1) | USD 4.20 | USD 4.20 (same) | USD 4.20 (same) | USD 4.20 (same) | USD 4.50 (extended temp premium) | USD 5.80 (larger Flash) | USD 4.95 (mid Flash) |
Key Differentiators
- Larger Flash headroom for firmware upgrades (vs PIC18F45K22T-I/PT)
- CTMU integration eliminates external touch IC (vs PIC18F4620-I/PT)
- Extended temperature variant available on same footprint (vs PIC18F65K22-I/PT)
Design Notes
Estimated: at maximum clock of 64 MHz with all peripherals active, the PIC18F65K22T-I/PTRSL in TQFP-64 (10x10 mm) dissipates roughly 30-50 mW. The TQFP-64 has theta_JA approximately 50-60 C/W on a standard 4-layer JEDEC PCB, yielding a junction temperature rise of 1.5-3 C above ambient at full load. Industrial -40C to +85C ambient operation is comfortably within the part's 150C maximum junction rating with no heatsink required.
Place a 100 nF ceramic decoupling capacitor within 5 mm of every VDD/VSS pin pair (10 pins total: pins 11, 21, 31, 41, 59 and corresponding VSS). Add a single bulk 10 uF tantalum or ceramic capacitor near the MCU supply pin. Provide a low-impedance ground plane on layer 2 directly under the IC. Place the MCLR pull-up (typically 10 kohm) close to pin 1 to avoid spurious resets.
MSL 3 moisture sensitivity of the TQFP-64 package requires dry-pack handling and bake-out before soldering if the factory floor exposure time exceeds 168 hours. Do not exceed 150C peak reflow temperature during SMT assembly. The I (Industrial) temperature suffix is required for any deployment outside 0C to +70C ambient. Verify the configuration bits (CONFIG1L through CONFIG5L) before locking the device - an incorrectly configured oscillator setting can brick the part until reprogrammed.
Route the ICSP clock (RB6) and ICSP data (RB7) traces to a 6-pin header with no shared signals, kept short (<50 mm) for reliable in-circuit programming. Place the 16 MHz primary oscillator crystal within 5 mm of pins RA6/OSC2 and RA7/OSC1 with a grounded guard ring. If the internal oscillator is used instead, leave RA6/RA7 as GPIO and configure FOSC bits accordingly - external crystal traces then become unused and can be omitted.
Compliance Information
RoHS compliant per Microchip product page. Industrial -40C to +85C temperature grade (not AEC-Q100 qualified - choose PIC18F65K22T-E/PT for extended temp). Halogen-free and lead-free per Microchip environmental compliance statement.
