PIC18F65K22T-I/PT - 32KB Flash 8-bit MCU | Microchip | 64-TQFP
MPN: PIC18F65K22T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.86 | $4.86 |
| 10 | $4.32 | $43.20 |
| 100 | $3.71 | $371.00 |
| 500 | $3.25 | $1,625.00 |
| 1,000 | $2.88 | $2,880.00 |
PIC18F65K22T-I/PT Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, optimized for deterministic real-time control in cost-sensitive embedded applications. Within the broader taxonomy, the PIC18F65K22 belongs to the 8-bit MCU family -> microcontroller -> embedded processor -> semiconductor. It executes a RISC instruction set, meaning most instructions complete in one clock cycle, and uses a Harvard architecture with separate program and data buses. The 'K22' device family is Microchip's enhanced mid-range nanoWatt XLP line, balancing 3V-5V operation with extreme low sleep current.
Key features that distinguish this part include 64MHz operation with 16 MIPS throughput, 16-channel 12-bit ADC, 8 CCP/ECCP modules supporting PWM, dual I2C and dual SPI ports, two EUSART interfaces including LIN support, CTMU for touch sensing, and an operating voltage range of 1.8V to 5.5V (typical 2.5V/3.3V/5V). The 64-pin TQFP exposes up to 53 digital I/O pins, providing generous headroom for parallel interfaces, displays, and motor-control loops.
The PIC18F65K22's high pin count and rich peripheral mix make it well suited for applications such as HVAC controllers, white-goods user interfaces, automotive body and cluster modules, capacitive touch panels, industrial sensor hubs, and small graphical LCD or TFT displays. Its nanoWatt XLP idle currents below 1uA allow battery-powered designs to maintain RTC and external interrupts for years on a single cell. Real-time determinism and an automotive-qualified temperature option also suit LIN nodes and CAN-adjacent I/O expanders.
Drop-in alternatives for PIC18F65K22T-I/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 PIC18F65K22T-I/PT (same form factor and footprint) — differing in Package, Core Architecture, Timers, ADC, I/O Pins.
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/PTVAO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F65K22T-I/MRRSL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F65J10-I/PT
✅ Drop-In✓ In Stock
$4.4 / Unit
View Datasheet →PIC18F65J50T-I/PT
✅ Drop-In✓ In Stock
$3.3 / Unit
View Datasheet →PIC18F65K22T-I/PT Maximum Ratings & Electrical Characteristics
| Core Processor | PIC18 |
| Core Architecture | 8-bit RISC (Harvard) |
| Max CPU Clock | 64 MHz |
| Instruction Throughput | 16 MIPS (4 cycles/instruction) |
| Program Memory (Flash) | 32 KB (16K x 16) |
| Data SRAM | 2 KB |
| Data EEPROM | 1 KB |
| Operating Voltage Range | 1.8 V to 5.5 V (2.5 V / 3.3 V / 5 V typical) |
| Operating Temperature Range | -40 C to +85 C (Industrial, 'I' suffix) |
| Package | 64-pin TQFP (PT), 10 x 10 mm, tape & reel |
| I/O Pins | Up to 53 digital I/O |
| ADC | 12-bit, up to 16 channels |
| Timers | Up to 10 (8-bit/16-bit mixed) |
| PWM Channels | Up to 8 (via CCP/ECCP) |
| Communication | 2x I2C, 2x SPI, 2x EUSART (LIN), PSP |
| Low-Power Technology | nanoWatt XLP |
| Touch Interface | CTMU (Charge Time Measurement Unit) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC18F65K22T-I/PT Pin Configuration
| Pin 1 | RE3/MCLR/VPP — Digital input RE3 / Master Clear (reset) / Programming voltage |
| Pin 2 | RA0/AN0/C1IN+/ULPWU — PORTA bit 0 / Analog input 0 / Comparator 1 non-inverting / ultra-low-power wake-up |
| Pin 3 | RA1/AN1/C2IN+/C1IN-/CTDIN — PORTA bit 1 / Analog input 1 / Comparator inputs / CTMU digital input |
| Pin 4 | RA2/AN2/C2IN-/VREF- — PORTA bit 2 / Analog input 2 / Comparator / negative voltage reference |
| Pin 5 | RA3/AN3/C1IN+/VREF+ — PORTA bit 3 / Analog input 3 / Comparator / positive voltage reference |
| Pin 6 | RA4/T0CKI/C1OUT — PORTA bit 4 / Timer0 clock input / Comparator 1 output |
| Pin 7 | RA5/AN4/C2OUT — PORTA bit 5 / Analog input 4 / Comparator 2 output |
| Pin 8 | RE0/RD — PORTE bit 0 / Parallel Slave Port read |
| Pin 9 | RE1/WR — PORTE bit 1 / Parallel Slave Port write |
| Pin 10 | RE2/CS — PORTE bit 2 / Parallel Slave Port chip select |
| Pin 11 | VDD — Positive supply (1.8V to 5.5V) |
| Pin 12 | VSS — Ground reference |
| Pin 13 | OSC1/CLKI/RA7 — Crystal oscillator input / external clock / PORTA bit 7 |
| Pin 14 | OSC2/CLKO/RA6 — Crystal oscillator output / clock output / PORTA bit 6 |
| Pin 15 | RC0/SOSCO — PORTC bit 0 / secondary oscillator output (32kHz) |
| Pin 16 | RC1/SOSCI — PORTC bit 1 / secondary oscillator input (32kHz) |
| Pin 17 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| Pin 18 | RC3/SCL/SCK — PORTC bit 3 / I2C clock / SPI clock |
| Pin 19 | RC4/SDA/SDI — PORTC bit 4 / I2C data / SPI data in |
| Pin 20 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pin 21 | RC6/TX1/CK1 — PORTC bit 6 / EUSART1 TX / clock |
| Pin 22 | RC7/RX1/DT1 — PORTC bit 7 / EUSART1 RX / data |
| Pin 23 | RD0/PSP0/C1INA — PORTD bit 0 / PSP data 0 |
| Pin 24 | RD1/PSP1/C2INA — PORTD bit 1 / PSP data 1 |
| Pin 25 | RD2/PSP2 — PORTD bit 2 / PSP data 2 |
| Pin 26 | RD3/PSP3 — PORTD bit 3 / PSP data 3 |
| Pin 27 | RD4/PSP4/ECCP1/P1A — PORTD bit 4 / PSP data 4 / Enhanced CCP1 / PWM output A |
| Pin 28 | RD5/PSP5/P1B — PORTD bit 5 / PSP data 5 / PWM output B |
| Pin 29 | RD6/PSP6/P1C — PORTD bit 6 / PSP data 6 / PWM output C |
| Pin 30 | RD7/PSP7/P1D — PORTD bit 7 / PSP data 7 / PWM output D |
| Pin 31 | VSS — Ground reference |
| Pin 32 | VDD — Positive supply (1.8V to 5.5V) |
| Pin 33 | RB0/AN12/INT0/FLT0 — PORTB bit 0 / Analog input 12 / External interrupt 0 / PWM fault |
| Pin 34 | RB1/AN10/INT1 — PORTB bit 1 / Analog input 10 / External interrupt 1 |
| Pin 35 | RB2/AN8/INT2/CANTX — PORTB bit 2 / Analog input 8 / External interrupt 2 / ECAN TX (K22 family) |
| Pin 36 | RB3/AN9/CANRX — PORTB bit 3 / Analog input 9 / ECAN RX (K22 family) |
| Pin 37 | RB4/AN11 — PORTB bit 4 / Analog input 11 |
| Pin 38 | RB5/AN13 — PORTB bit 5 / Analog input 13 |
| Pin 39 | RB6/PGC — PORTB bit 6 / In-Circuit Debugger clock |
| Pin 40 | RB7/PGD — PORTB bit 7 / In-Circuit Debugger data |
| Pin 41 | RF0 — PORTF bit 0 |
| Pin 42 | RF1 — PORTF bit 1 |
| Pin 43 | RF2 — PORTF bit 2 |
| Pin 44 | RF3 — PORTF bit 3 |
| Pin 45 | RF4 — PORTF bit 4 |
| Pin 46 | RF5 — PORTF bit 5 |
| Pin 47 | RF6 — PORTF bit 6 |
| Pin 48 | RF7 — PORTF bit 7 |
| Pin 49 | RG0/ECCP3/P3A — PORTG bit 0 / Enhanced CCP3 / PWM output A |
| Pin 50 | RG1/TX2/CK2 — PORTG bit 1 / EUSART2 TX / clock |
| Pin 51 | RG2/RX2/DT2 — PORTG bit 2 / EUSART2 RX / data |
| Pin 52 | RG3/CCP4 — PORTG bit 3 / Capture/Compare/PWM 4 |
| Pin 53 | RG4/CCP5 — PORTG bit 4 / Capture/Compare/PWM 5 |
| Pin 54 | RG5 — PORTG bit 5 |
| Pin 55 | VSS — Ground reference |
| Pin 56 | VDD — Positive supply (1.8V to 5.5V) |
| Pin 57 | RH0/A16 — PORTH bit 0 / external memory address 16 |
| Pin 58 | RH1/A17 — PORTH bit 1 / external memory address 17 |
| Pin 59 | RH2/A18 — PORTH bit 2 / external memory address 18 |
| Pin 60 | RH3/A19 — PORTH bit 3 / external memory address 19 |
| Pin 61 | RH4 — PORTH bit 4 |
| Pin 62 | RH5 — PORTH bit 5 |
| Pin 63 | RH6 — PORTH bit 6 |
| Pin 64 | RH7 — PORTH bit 7 |
Typical Applications
PIC18F65K22T-I/PT is suitable for 7 applications: HVAC Climate Controllers, White-Goods Capacitive-Touch UI, Automotive Body and Cluster Modules, Industrial Sensor Hubs and IO-Link, Portable Battery-Powered Instruments, User-Interface and Display Controllers, Motor Control and PWM Drivers.
HVAC Climate Controllers
Why the PIC18F65K22T-I/PT fits: With 53 I/O pins, dual I2C/SPI, 8 PWM channels, and a 16-channel 12-bit ADC, this MCU can directly interface temperature/humidity sensors, triac-fired fan and valve drivers, character-LCD or TFT displays, and real-time clock ICs without external logic. How it's used: Typically placed as the central controller on a climate-control board, running a multi-channel PID loop at 64MHz (16 MIPS) for fan-coil or compressor control. Performance consideration: At 3.3V supply and 64MHz, the MCU consumes roughly 9 mA active (typical), but nanoWatt XLP idle (<1 uA) allows it to remain in standby between user interactions, making it ideal for energy-rated HVAC products where quiescent power contributes to standby loss budgets.
Recommended
White-Goods Capacitive-Touch UI
Why the PIC18F65K22T-I/PT fits: The on-chip CTMU provides constant-current capacitive measurement for up to 16 touch buttons or a slider with no external touch controller IC, while nanoWatt XLP enables sealed glass front panels that must run for years on a battery-backed supply. How it's used: A 64-TQFP MCU drives the touch scan, multiplexes an LED indicator array, and controls relay/MOSFET outputs for pumps, valves, or heater elements. Performance consideration: CTMU scans complete in microseconds and combine with sleep modes to keep average current low; at 5V supply the MCU draws about 11 mA active but only nanoamps in deep sleep with RTCC active, making it suitable for always-on touch interfaces in washing machines, dishwashers, and induction cooktops.
Recommended
Automotive Body and Cluster Modules
Why the PIC18F65K22T-I/PT fits: The 'K22 family operates across 1.8-5.5V and tolerates automotive battery transients up to 5.5V steady-state; dual EUSART with LIN 2.1 support handles LIN body-bus nodes; the industrial temperature grade (-40C to +85C) covers cabin environments while the VAO suffix offers factory automotive traceability. How it's used: Designed into body-control modules driving lighting, mirrors, wipers, and cluster indicators via MOSFET half-bridges and PWM dimming. Performance consideration: 8 PWM channels can drive LED matrix backlights and motors concurrently; 16 ADC channels read analog switches, thermistors, and battery voltage; the migration path from PIC18F65K22 to PIC18F65K22T-I/PTVAO preserves the PCB design while adding automotive-traceability documentation required by OEM customers.
Recommended
Industrial Sensor Hubs and IO-Link
Why the PIC18F65K22T-I/PT fits: 32KB Flash and 2KB SRAM can host a Modbus RTU or IO-Link device stack, the dual UARTs serve as a service interface plus the fieldbus, and 16 ADC channels aggregate multiple 4-20mA sensor inputs. How it's used: Acts as the sensor front-end processor, digitizing analog inputs, performing local linearization, and reporting results over RS-485 or IO-Link. Performance consideration: Industrial sensors require robust ESD and EMI immunity; the PIC18F65K22T-I/PT's 5V-tolerant I/O with Schmitt triggers and its -40C to +85C industrial range allow direct connection to 24V-powered sensor networks when paired with external TVS protection. NanoWatt XLP is not the focus here (mains-powered design) but is useful for the EEPROM-backed event log retention across power-cycle events.
Recommended
Portable Battery-Powered Instruments
Why the PIC18F65K22T-I/PT fits: nanoWatt XLP delivers sleep currents below 1 uA with full RAM retention and RTCC running on the 32kHz secondary oscillator, enabling multi-year battery life from a single CR2032 coin cell. How it's used: Serves as the central processor in handheld multimeters, dataloggers, or remote environmental monitors; samples sensors on a periodic wake-up, stores results in EEPROM, and sleeps the rest of the time. Performance consideration: 64MHz burst processing handles on-demand measurement cycles (FFT, statistics) in milliseconds, but the average system current is dominated by sleep; the 1.8-5.5V supply range matches 2xAA alkaline (3V), 2x NiMH (2.4V), and CR123A (3V) primary batteries without a boost converter.
Recommended
User-Interface and Display Controllers
Why the PIC18F65K22T-I/PT fits: With 53 I/O pins, the MCU can directly drive character LCDs, small TFTs with parallel interface, and keypads, while the PSP parallel slave port offloads graphics data from a host processor. How it's used: Frequently deployed as a graphics co-processor or standalone UI engine in vending machines, kiosks, and home appliances, offloading key-scanning, display refresh, and indicator control from the application processor. Performance consideration: 16 MIPS is sufficient to refresh a 128x64 graphical LCD at 30Hz while servicing a 4x4 key matrix and the SPI/I2C host link; the PSP port enables DMA-style screen updates without CPU overhead, freeing instruction cycles for application logic.
Recommended
Motor Control and PWM Drivers
Why the PIC18F65K22T-I/PT fits: 8 PWM channels via 4 CCP and 4 ECCP modules support multi-phase brushless DC, stepper, or brushed-motor commutation at up to 64MHz core speed for fast control loops. How it's used: Acts as the low-level motor controller in small appliances, HVAC damper actuators, and pump controllers, accepting setpoint commands via I2C/SPI and driving gate drivers via PWM outputs with hardware dead-band control. Performance consideration: ECCP modules support complementary outputs with programmable dead-time, eliminating the need for external gate-driver dead-band logic; 10 timers provide input-capture for encoder feedback and tachometer sensing at speeds up to several hundred kHz.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F65K22T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F65K22-I/PT | PIC18F65K22T-E/PT | PIC18F65K22T-I/PTVAO | PIC18F65J10-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-TQFP (PT), 10x10 mm | 64-TQFP (PT) - same | 64-TQFP (PT) - same | 64-TQFP (PT) - same | 64-TQFP (PT) - same |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| Max CPU Frequency | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 40 MHz (10 MIPS) |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 2.0 V to 3.6 V (3.3V only) |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +125 C (Extended) | -40 C to +85 C + Automotive traceability | -40 C to +85 C |
| Low-Power Technology | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | None (J-series) |
| Packaging Form | Tape & Reel | Tray | Tape & Reel | Tape & Reel | Tray |
Key Differentiators
- Highest MIPS in the PIC18F65K22 family with full nanoWatt XLP and 1.8V-5.5V support (vs PIC18F65J10-I/PT)
- Drop-in extended temperature range option with same silicon (vs PIC18F65K22T-E/PT)
- Factory-tracked automotive traceability on the same die (vs PIC18F65K22T-I/PTVAO)
Design Notes
Estimated: At 64MHz active from 5V supply, the PIC18F65K22T-I/PT draws roughly 9-11 mA. With nanoWatt XLP, sleep current drops to under 1 uA with RTCC running on the 32kHz secondary oscillator. For battery-powered designs, place a 100 nF decoupling capacitor as close as possible to each VDD/VSS pair (the 64-TQFP exposes three pairs on pins 11/12, 31/32, and 55/56) and add a 10 uF bulk capacitor near the IC. Inductive loads on I/O pins require flyback diodes or TVS protection since the absolute maximum ratings per pin are only 25 mA sink/source.
The 64-TQFP package has a theta-JA around 50 C/W on a standard 4-layer JEDEC test board, so continuous 64MHz operation at 5V produces a junction temperature rise of roughly 5-6 C above ambient - well within the industrial -40 C to +85 C operating range. For the extended-temperature E-suffix variant at +125 C ambient, ensure the application still leaves margin under worst-case I/O loading. Place thermal vias under the exposed pad of the TQFP if present (note: 64-TQFP without EP has no thermal pad, only lead-frame dissipation).
Keep the ICSP programming lines (RB6/PGC and RB7/PGD) accessible with a 2x3 0.1-inch header so the device can be re-flashed after board assembly. Place the primary decoupling capacitor within 3 mm of the VDD pin pair; keep the crystal oscillator traces short (under 10 mm) and surround them with a ground pour for EMI suppression. The MCLR/VPP pin requires a 10 kohm pull-up to VDD and a 100 nF capacitor to ground for proper reset behavior - omitting these is a common cause of brown-out reset malfunctions in noisy industrial environments.
When using the I2C bus at 400 kHz or 1 MHz, place 4.7 kohm (or stronger) pull-up resistors on SCL and SDA lines since the PIC18's I2C pads use open-drain drivers. For SPI at 10 MHz and above, route MOSI/MISO/SCK as matched-length traces and avoid running them parallel to high-current switching nodes for more than a few millimeters. The EUSART LIN bus requires a separate LIN transceiver IC (such as ATA663231 or MCP2003) because the PIC18 I/O are 5V CMOS and cannot drive the 12V LIN bus directly.
Compliance Information
Standard PIC18F65K22T-I/PT is industrial-grade (AEC-Q100 not applicable). For AEC-Q100-tracked automotive builds, choose PIC18F65K22T-I/PTVAO suffix variant.
