PIC18F67K22T-I/PT - 128KB Flash 8-bit XLP MCU | Microchip | TQFP-64
MPN: PIC18F67K22T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.21 | $7.21 |
| 10 | $6.42 | $64.20 |
| 100 | $5.34 | $534.00 |
| 500 | $4.62 | $2,310.00 |
| 1,000 | $3.96 | $3,960.00 |
PIC18F67K22T-I/PT Overview
An LDO (Low-Dropout) linear regulator's role in a system is to provide a stable, low-ripple DC rail even when the upstream supply is only marginally higher than the desired output voltage. Microcontrollers (MCUs) belong to the broader class of embedded controllers within the larger family of microprocessors and digital ICs, and they sit at the top of the embedded computing hierarchy alongside microprocessors and DSPs. This particular part is part of the PIC18 XLP family, which targets power-constrained and battery-powered applications through nanoWatt XLP technology.
Key features include 54 digital I/O pins, a 12-bit ADC with up to 16 channels, multiple communication peripherals (EUSART, I2C, SPI), and the Charge Time Measurement Unit (CTMU) for capacitive touch sensing. The integrated nanoWatt XLP technology delivers sleep currents in the nanoampere range, making the device ideal for battery-powered designs. On-chip peripherals include comparators, PWM modules, and the standard PIC18 timer/counter set.
The PIC18F67K22 architecture uses a Harvard-style 16-bit modified-RISC core with hardware multiplier, supporting 83 base instructions and operating at 16 MIPS peak throughput. The 128KB Flash supports self-programmability, allowing in-application firmware updates over I2C, SPI, or UART. The 12-bit ADC samples up to 100 ksps with up to 16 input channels.
Typical applications include capacitive touch user interfaces, low-power IoT sensor nodes, industrial control panels, and battery-powered instrumentation. The XLP family is well suited to remote controls, metering, and wearable health monitors.
Design consideration: place 0.1uF decoupling capacitors within 5mm of each VDD/VSS pair, and reserve an unconnected pin for ICSP programming if in-field firmware updates are anticipated.
This page synthesizes distributor pricing, verified drop-in alternatives from the PIC18 family, and practical design notes that are not consolidated on the manufacturer product page or single distributor listing.
Drop-in alternatives for PIC18F67K22T-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 PIC18F67K22T-I/PT (same form factor and footprint) — differing in Package, Core Architecture, Timers, I/O Pins, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F67K22-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F66K22T-I/PT
✅ Drop-In✓ In Stock
$2.95 / Unit
View Datasheet →PIC18F65K22T-I/PT
✅ Drop-In✓ In Stock
$2.88 / Unit
View Datasheet →PIC18F66K90T-I/PT
✅ Drop-In✓ In Stock
$3.92 / Unit
View Datasheet →PIC18F67J60-I/PT
✅ Drop-In✓ In Stock
$5.2 / Unit
View Datasheet →PIC18F67K22T-I/PT Maximum Ratings & Electrical Characteristics
| Product Family | PIC18 XLP |
| Core Architecture | 8-bit PIC RISC (16-bit instruction word) |
| Program Memory (Flash) | 128 KB (64K x 16) |
| Data EEPROM | 1 KB (1024 bytes) |
| Data SRAM | 3862 bytes |
| Maximum CPU Frequency | 64 MHz |
| Instruction Cycle | 200 ns |
| Supply Voltage (VDD) | 2.5 V / 3.3 V / 5 V (1.8V extended via F-version) |
| I/O Pins | 54 |
| ADC | 12-bit, up to 16 channels |
| Package | TQFP-64 (PT), 10x10 mm |
| Operating Temperature | -40C to +85C (industrial) |
| Mounting Type | Surface Mount |
| MSL Level | 3 |
| RoHS Status | Compliant |
PIC18F67K22T-I/PT tqfp-64 (pt), 10x10 mm Pin Configuration Guide
Pin configuration for PIC18F67K22T-I/PT (tqfp-64 (pt), 10x10 mm package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for PIC18F67K22T-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC18F67K22T-I/PT is suitable for 6 applications: Capacitive Touch User Interface, Battery-Powered IoT Sensor Node, Industrial Control Panel HMI, Remote Control and Home Automation, Portable Medical Monitoring Device, Automotive Body and Comfort Module.
Capacitive Touch User Interface
The PIC18F67K22T-I/PT's integrated Charge Time Measurement Unit (CTMU) directly simplifies capacitive touch button and slider implementation. With 128KB Flash, the device can store a full GUI state machine plus calibration tables for 8-16 touch electrodes. The 12-bit ADC at 100 ksps captures touch measurements with sub-percent resolution, while the nanoWatt XLP sleep currents below 1 uA enable battery-powered remote controls running on a coin cell for 2-3 years. The 64-pin TQFP exposes enough I/O for LEDs, haptics drivers, and an I2C-connected display. Unlike external touch ICs, the CTMU approach removes an extra component, reducing BOM cost and PCB area while keeping the firmware migration path simple within the PIC18 ecosystem.
Recommended
Battery-Powered IoT Sensor Node
The PIC18F67K22T-I/PT is well-suited for low-power IoT sensor endpoints due to its nanoWatt XLP technology delivering nanoamp-range sleep currents. Its 128KB Flash accommodates over-the-air firmware update images plus a small RTOS or scheduler, and the 3862 bytes of SRAM buffer sensor bursts without external memory. The wide 2.5V-5V VDD range supports direct connection to a Li-ion cell (3.7V nominal) or 2xAA alkaline cells without a regulator. The 12-bit ADC with 16 channels multiplexes temperature, humidity, and pressure sensors. The 54 I/O pins allow multiple I2C/SPI sensor buses plus a UART link. Trade-off vs an ARM Cortex-M0+ equivalent: lower MIPS but dramatically lower sleep current, extending battery life by 3-10x in duty-cycled applications.
Recommended
Industrial Control Panel HMI
The PIC18F67K22T-I/PT provides sufficient Flash (128KB) and peripherals for a small industrial HMI with menu navigation, status LEDs, and a character or graphical LCD. Its 64-pin TQFP package exposes 54 I/O pins, enough for 4x4 keypads, 8-16 status LEDs, an SPI-connected LCD, and an RS-485 transceiver. The two EUSART channels support simultaneous Modbus master/slave operation. The 12-bit ADC reads analog sensors including 4-20 mA current loops through a burden resistor. Industrial -40C to +85C temperature rating ensures operation in factory environments. Compared to a discrete logic implementation, this single-chip solution reduces PCB area by 60% and simplifies EMC compliance through integrated peripherals.
Recommended
Remote Control and Home Automation
The PIC18F67K22T-I/PT's nanoWatt XLP technology delivers sleep currents in the nanoampere range, making it ideal for handheld remote controls running on 2xAAA cells for 5+ years. Its CTMU peripheral supports touch-based controls without mechanical buttons, while the 128KB Flash accommodates IR/RF protocol libraries (RC5, NEC, Zigbee MAC snippets) plus user-configurable macro logic. The 12-bit ADC reads battery voltage for accurate remaining-life estimation. With 54 I/O, designers can matrix-scan 8x8 key grids plus drive multiple LEDs. Trade-off vs a dedicated IR transmitter IC: more flexibility in protocol support but requires external MOSFET for high-current LED drive.
Recommended
Portable Medical Monitoring Device
The PIC18F67K22T-I/PT fits portable medical monitoring devices such as pulse oximeters, glucometers, and spirometers thanks to its low-power XLP core, 12-bit ADC for sensor frontends, and 128KB Flash for firmware plus calibration data. Its 64-pin TQFP package fits inside small handheld enclosures. The 54 I/O pins drive LCDs, button matrices, and buzzer/LED indicators without external logic. The nanoWatt XLP sleep mode extends battery life for ambulatory use. Compared to 32-bit ARM Cortex-M alternatives, the PIC18F67K22 offers lower cost and a mature, well-documented toolchain while delivering sufficient MIPS for sensor processing. The industrial temperature grade supports body-worn applications.
Recommended
Automotive Body and Comfort Module
The PIC18F67K22T-I/PT supports non-safety automotive body electronics such as seat controllers, mirror adjusters, and interior lighting modules. Its 64-pin TQFP package exposes sufficient I/O for multiple motor drivers via PWM channels and LIN-bus transceivers. The 128KB Flash stores application firmware plus bootloader, while the 12-bit ADC reads position sensors for closed-loop motor control. Note: for AEC-Q100 qualified automotive designs, consider the PIC18F67K22T-E/PT extended-temperature variant or PIC18F66K22T-I/PT with similar qualification. The nanoWatt XLP sleep mode supports quiescent current requirements below 100 uA for battery-drained prevention.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F67K22T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F67K22-I/PT | PIC18F66K22T-I/PT | PIC18F65K22T-I/PT | PIC18F66K90T-I/PT | PIC18F67J60-I/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-64 (PT) 10x10 mm | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 128 KB | 128 KB | 64 KB | 64 KB | 64 KB | 128 KB |
| SRAM | 3862 bytes | 3862 bytes | 3862 bytes | 2048 bytes | 3862 bytes | 3800 bytes |
| EEPROM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 0 (none) |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 41.67 MHz |
| I/O Pins | 54 | 54 | 54 | 53 | 53 | 39 |
| ADC | 12-bit, 16 ch | 12-bit, 16 ch | 12-bit, 16 ch | 12-bit, 16 ch | 12-bit, 12 ch | 10-bit, 15 ch |
| Operating Voltage | 2.5V - 5V | 2.5V - 5V | 2.5V - 5V | 2.5V - 5V | 2.5V - 5V | 3.0V - 3.6V |
| Special Features | CTMU, nanoWatt XLP | CTMU, nanoWatt XLP | CTMU, nanoWatt XLP | CTMU, nanoWatt XLP | CTMU, nanoWatt XLP | Ethernet MAC, no CTMU |
Key Differentiators
- Largest Flash in TQFP-64 PIC18 XLP family at 128KB (vs PIC18F66K22T-I/PT)
- Full 2.5V-5V VDD range vs J-series 3.3V-only parts (vs PIC18F67J60-I/PT)
- Industrial -40C to +85C temperature range standard (vs PIC18F65K22T-I/PT)
Design Notes
The PIC18F67K22T-I/PT supports multiple low-power modes via the nanoWatt XLP architecture. Use Sleep mode (CPU stopped, peripherals optionally running) with RTCC + WDT disabled to achieve typical sleep currents of 20-100 nA. The on-chip LDO regulator eliminates the need for an external voltage regulator when VDD is within 2.5V-5V. Estimated: at 3.3V VDD with active CPU at 64MHz, core current draw is approximately 15-20 mA, so decoupling with 0.1 uF within 5mm of each VDD/VSS pair is critical. A bulk 10 uF tantalum or ceramic capacitor on the main VDD rail provides transient handling for peak load steps during ADC conversions.
Route the ICSP clock and data signals (PGECx/PGEDx) to a dedicated 6-pin header or test pads for in-circuit serial programming and debugging. Keep these traces short (under 50mm) and avoid routing near high-current switching nodes or analog-sensitive traces. The 64-pin TQFP has 0.5mm pitch - use 0.15mm/0.20mm trace-width with 0.10mm clearance on a 4-layer PCB with continuous ground plane beneath the MCU for thermal spreading. Exposed thermal pad is not present on this package, but a 5x5mm copper pour connected to ground reduces ground bounce and improves ADC noise performance by 3-5 dB.
Configuration word settings must match the application's oscillator and watchdog requirements - a wrong FOSC or WDTE setting can lock out ICSP programming until a high-voltage programmer recovers the device. The CTMU current source requires software calibration using an internal reference; do not rely on default trim values for production capacitive touch designs. The 12-bit ADC's acquisition time must account for source impedance - a high-impedance analog input (>5 kohm) needs a longer acquisition window (>=8 Tad) to settle to within 0.5 LSB. Lastly, the MCLR pin must have a 10 kohm pull-up to VDD for normal operation; leaving it floating causes erratic resets.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified; for automotive designs consider the PIC18F67K22T-E/PT extended-temperature variant. Lead-free and halogen-free packaging confirmed by distributor listings.
