PIC18LF23K22T-I/MV - 8KB Flash, 25MHz 8-bit MCU | Microchip
MPN: PIC18LF23K22T-I/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.2 | $3.20 |
| 10 | $2.88 | $28.80 |
| 100 | $2.46 | $246.00 |
| 500 | $2.18 | $1,090.00 |
| 1,000 | $1.92 | $1,920.00 |
| 3,000 | $1.65 | $4,950.00 |
PIC18LF23K22T-I/MV Overview
An 8-bit microcontroller (MCU) is a programmable computing engine built around an 8-bit data path, on-chip Flash program memory, RAM, and a rich set of digital and analog peripherals, occupying a position in the hierarchy between simple fixed-function logic and full 32-bit microprocessors. Within Microchip's portfolio, the PIC18 family represents an enhanced 8-bit architecture that bridges legacy PIC16 designs and the more powerful dsPIC/PIC24 line, balancing deterministic execution with modern peripherals such as USB, I²C, SPI, ECAN, and multi-channel 10-bit ADC.
Key features of the PIC18LF23K22 include nanoWatt XLP technology for ultra-low-power sleep currents (down to ~50 nA typical in sleep), 16 enhanced I/O ports supporting peripheral pin select, two analog comparators with rail-to-rail inputs, up to 17 channels of 10-bit ADC, two capture/compare/PWM modules, an enhanced USART, two MSSP (SPI/I²C) ports, and a 16-bit timer/counter. The UQFN-28 package exposes the full peripheral set in a compact 6 × 6 mm land pattern.
Architecturally, the PIC18LF23K22T-I/MV uses an enhanced Harvard architecture with separate program and data buses, a hardware multiplier for 8 × 8 single-cycle operations, and prioritized interrupt handling. The 'LF' prefix indicates the low-voltage / wide VDD range variant; the 'T' suffix denotes Tape and Reel packaging. The 'I' industrial temperature rating and 'MV' package designator round out the part code. Its XLP nanoWatt features include ultra-low-power wake, deep sleep with RAM retention, and multiple idle modes — critical for battery-powered edge devices.
Typical applications include portable industrial sensor nodes, low-power IoT edge devices, USB/CDC human-interface peripherals, battery-backed instrumentation, automotive body controllers (sub-systems, not AEC-Q100 powertrain), and small home appliances. The wide 2.0–5.5 V VDD range lets it interface to both 3.3 V and 5 V analog front-ends without level shifting.
A key design consideration is decoupling: place one 100 nF ceramic bypass capacitor directly across VDD/VSS as close to the package as possible, plus a bulk 1 µF–10 µF tantalum or ceramic near the regulator. For low-power designs, use the deep-sleep mode with the RTCC running for timekeeping, waking only on interrupt edges. The 28-pin UQFN footprint also requires thermal pad soldering for reliable mass-production assembly.
This page synthesizes distributor pricing, same-family pin-compatible variants, and practical design notes that go beyond the manufacturer datasheet, giving engineers a single decision-ready reference.
Drop-in alternatives for PIC18LF23K22T-I/MV — 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 PIC18LF23K22T-I/MV (same form factor and footprint) — differing in Package, ADC, Operating Temperature, Core Architecture, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18LF23K22-I/MV
✅ Drop-In✓ In Stock
$1.42 / Unit
View Datasheet →PIC18F23K22-I/MV
✅ Drop-In✓ In Stock
$1.42 / Unit
View Datasheet →PIC18F24K22-I/MV
✅ Drop-In✓ In Stock
$1.96 / Unit
View Datasheet →PIC18F25K22-I/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF23K22T-I/ML
✅ Drop-In✓ In Stock
$1.92 / Unit
View Datasheet →PIC18LF23K22-E/MV
✅ Drop-In✓ In Stock
$1.65 / Unit
View Datasheet →PIC18LF23K22T-I/MV Maximum Ratings & Electrical Characteristics
| Architecture | PIC18 8-bit enhanced Harvard |
| Family | PIC18 K22 (nanoWatt XLP) |
| Program Memory (Flash) | 8 KB |
| Data RAM | 768 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Clock | 25 MHz (62.5 ns instruction cycle) |
| Throughput | 8 MIPS |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| I/O Pins | 16 (with Peripheral Pin Select) |
| ADC | 10-bit, up to 17 channels |
| Analog Comparators | 2 (rail-to-rail input) |
| Timers | 1 × 8-bit, 3 × 16-bit |
| CCP/ECCP Modules | 2 |
| Enhanced USART | 1 (LIN-capable) |
| MSSP (SPI / I²C) | 2 |
| Operating Temperature | −40 °C to +85 °C (Industrial) |
| Package | UQFN-28 (MV), 6 × 6 mm |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant (lead-free) |
| Packaging | Tape & Reel (T suffix) |
PIC18LF23K22T-I/MV Pin Configuration
| Pin 1 | RA2/AN2/C1IN+/C2IN+/VREF-/CVREF- — Digital I/O / analog input / comparator input / DAC negative reference |
| Pin 2 | RA3/AN3/C1IN0-/C2IN0- — Digital I/O / analog input / comparator input |
| Pin 3 | RA4/T0CKI/C1OUT — Digital I/O / Timer0 clock input / Comparator 1 output |
| Pin 4 | RA5/AN4/C2OUT — Digital I/O / analog input / Comparator 2 output |
| Pin 5 | RA6/OSC2/CLKO — Digital I/O / crystal oscillator output / clock output |
| Pin 6 | RA7/OSC1/CLKI — Digital I/O / crystal oscillator input / clock input |
| Pin 7 | VDD — Positive supply voltage (2.0 V to 5.5 V) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RB0/INT0/FLT0 — Digital I/O / external interrupt 0 / PWM fault input |
| Pin 10 | RB1/INT1 — Digital I/O / external interrupt 1 |
| Pin 11 | RB2/INT2 — Digital I/O / external interrupt 2 |
| Pin 12 | RB3/INT3/CCP2 — Digital I/O / external interrupt 3 / Capture/Compare/PWM 2 |
| Pin 13 | RB4/KBI0 — Digital I/O / keyboard interrupt 0 |
| Pin 14 | RB5/KBI1 — Digital I/O / keyboard interrupt 1 |
| Pin 15 | RB6/KBI2/PGC — Digital I/O / keyboard interrupt 2 / ICSP clock |
| Pin 16 | RB7/KBI3/PGD — Digital I/O / keyboard interrupt 3 / ICSP data |
| Pin 17 | RC0/SOSCO — Digital I/O / secondary oscillator output (RTCC) |
| Pin 18 | RC1/SOSCI — Digital I/O / secondary oscillator input (RTCC) |
| Pin 19 | RC2/CCP1 — Digital I/O / Capture/Compare/PWM 1 |
| Pin 20 | RC3/SCL1/SCK1 — Digital I/O / I²C clock / SPI clock (MSSP1) |
| Pin 21 | RC4/SDA1/SDI1 — Digital I/O / I²C data / SPI data in (MSSP1) |
| Pin 22 | RC5/SDO1 — Digital I/O / SPI data out (MSSP1) |
| Pin 23 | RC6/TX1/CK1 — Digital I/O / EUSART TX / EUSART clock |
| Pin 24 | RC7/RX1/DT1 — Digital I/O / EUSART RX / EUSART data |
| Pin 25 | RE3/MCLR/VPP — Digital input / Master Clear reset (active-low) / programming voltage |
| Pin 26 | RA0/AN0/C1IN+/ULPWU — Digital I/O / analog input / comparator / ultra-low-power wake-up |
| Pin 27 | RA1/AN1/C2IN+/ULPWU — Digital I/O / analog input / comparator / ultra-low-power wake-up |
| Pin 28 | VSS (thermal pad) — Ground (exposed thermal pad — must be soldered to PCB ground) |
Typical Applications
PIC18LF23K22T-I/MV is suitable for 7 applications: Battery-Powered IoT Sensor Node, Industrial Control / Human-Machine Interface, USB/CDC Peripheral Interface (no native USB), Low-Power Data Acquisition Module, Smart Home Sensor Hub, Automotive Body Sub-System (non-safety), Small Appliance Control Board.
Battery-Powered IoT Sensor Node
The PIC18LF23K22T-I/MV is well matched to battery-powered IoT sensor nodes thanks to its nanoWatt XLP deep-sleep current under 100 nA typical and 2.0–5.5 V VDD that accepts single-cell Li-ion (3.0–4.2 V) or 2×AA (3.0 V) chemistries directly. The 17-channel 10-bit ADC reads multiple thermocouple, photodiode, or strain-gauge signals without external converters, while peripheral pin select routes I²C/SPI sensors to any of the 16 I/O pins — easing PCB layout. A typical application wakes the MCU every 60 seconds, samples one or two analog sensors, transmits over a connected radio module (e.g., RN2483), and returns to deep sleep, drawing an average current below 20 µA — enabling 5+ years on a single 2.4 Ah Li-coin cell.
Recommended
Industrial Control / Human-Machine Interface
The PIC18LF23K22T-I/MV serves as the central controller in industrial HMIs (keypads, status indicators, simple operator panels) thanks to its 25 MHz throughput, 2 CCP modules for PWM backlight or buzzer drive, and enhanced USART for RS-232/RS-485 communication to a host PLC. Its 2.0–5.5 V VDD tolerates noisy 24 V-to-5 V industrial rails post-regulation. Two analog comparators handle fast over-current or zero-cross detection without CPU intervention, while 16 digital I/O drive LED matrices, keypads, and optocouplers. Industrial temperature grade (−40 to +85 °C) and 8 KB Flash comfortably host the keypad scanner, debouncing logic, and MODBUS-RTU slave firmware with room for field-update over UART bootloader.
Recommended
USB/CDC Peripheral Interface (no native USB)
Although the PIC18LF23K22T-I/MV does not include a native USB peripheral, it can still drive a USB-CDC bridge design via an external UART-to-USB converter such as the MCP2200 or MCP2221A, exposing a virtual COM port over USB to a host PC. The MCU's enhanced USART runs up to 5 Mbps and easily handles 12 Mbps USB-CDC throughput via the bridge. This topology is common in low-cost laboratory instruments, sensor dongles, and firmware-load adapters where the application only needs UART-LE USB, not full-speed USB protocol stack. The 8 KB Flash hosts the command parser and protocol logic; 16 I/O drive status LEDs and user buttons on the device.
Recommended
Low-Power Data Acquisition Module
The PIC18LF23K22T-I/MV's 10-bit ADC with up to 17 channels plus internal 1.024 V FVR reference provides a compact front-end for multi-channel data acquisition modules (vibration, pressure, temperature logging). The 256-byte EEPROM stores calibration coefficients directly in-circuit, while the 8 KB Flash runs a circular-logging firmware with UART telemetry output. nanoWatt XLP deep sleep between samples cuts average current below 1 µA in 1-Hz logging mode, ideal for remote, solar-powered environmental monitors. The 25 MHz CPU handles 17-channel sequential ADC scans at >100 kS/s aggregate, and the enhanced USART streams logs at 115200 baud to a host radio or SD-card logger.
Recommended
Smart Home Sensor Hub
The PIC18LF23K22T-I/MV is a strong fit for compact smart-home sensor hubs that aggregate occupancy, light, and temperature readings and forward them over a Wi-Fi/BLE co-processor via SPI or UART. The 16 I/O drive multiple sensors directly, while two MSSP ports simultaneously run SPI to a wireless co-processor and I²C to a sensor IC — both without bus contention. The 2.0–5.5 V VDD accepts a 3.3 V regulator output cleanly, while nanoWatt XLP idle modes keep standby power below 50 µA between BLE/Zigbee advertisements, ideal for battery or energy-harvested wireless sensor designs.
Recommended
Automotive Body Sub-System (non-safety)
For non-safety automotive body sub-systems — seat controllers, HVAC keypads, lighting trim, accessory drivers — the PIC18LF23K22T-I/MV serves as a low-cost peripheral node. Its wide 2.0–5.5 V VDD tolerates 12 V battery transients post-regulation, and the enhanced USART supports LIN 1.3 bus masters commonly used for body-electronics communication. Two CCP modules drive PWM-controlled lighting and motor loads, while 16 I/O scan keypads or LED matrices. Note this is the Industrial-grade (−40 to +85 °C) variant; for AEC-Q100 qualification choose the PIC18F25K22-I/MV extension family or step up to the PIC18F46K22 AEC-Q100 part for safety-relevant applications.
Recommended
Small Appliance Control Board
The PIC18LF23K22T-I/MV provides a compact, low-cost control core for small appliances such as coffee machines, blenders, washing-machine sub-boards, and air-purifier controllers. Its 25 MHz throughput runs PID loops at >1 kHz for temperature or motor-speed regulation, while two analog comparators perform zero-cross detection on AC mains signals post-isolator. Two CCP modules generate precise PWM for triac/SCR phase-angle dimming or brushed-DC motor drives. The 2.0–5.5 V VDD accepts a 5 V regulated rail directly, and the industrial temperature grade handles the warm operating envelope of appliance enclosures. The 8 KB Flash stores the menu logic, sensor calibration, and fault-detection firmware with room for in-field firmware updates.
Recommended
Recommended Products Summary
Engineering reference data for PIC18LF23K22T-I/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18LF23K22-I/MV | PIC18F23K22-I/MV | PIC18F24K22-I/MV | PIC18F25K22-I/MV | PIC18LF23K22T-I/ML | PIC18LF23K22-E/MV |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | UQFN-28 (MV) 6×6 mm | UQFN-28 (MV) 6×6 mm - same | UQFN-28 (MV) 6×6 mm - same | UQFN-28 (MV) 6×6 mm - same | UQFN-28 (MV) 6×6 mm - same | QFN-28 (ML) 6×6 mm - same footprint, taller body | UQFN-28 (MV) 6×6 mm - same |
| Program Flash | 8 KB | 8 KB | 8 KB | 16 KB (+100%) | 32 KB (+300%) | 8 KB | 8 KB |
| Data RAM | 768 bytes | 768 bytes | 768 bytes | 768 bytes | 1536 bytes (+100%) | 768 bytes | 768 bytes |
| Data EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Max Clock Speed | 25 MHz (8 MIPS) | 25 MHz (8 MIPS) | 25 MHz (8 MIPS) | 25 MHz (8 MIPS) | 25 MHz (8 MIPS) | 25 MHz (8 MIPS) | 25 MHz (8 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 5.5 V | 2.0 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 5.5 V | 2.0 V to 5.5 V |
| Operating Temperature | −40 °C to +85 °C (Industrial) | −40 °C to +85 °C (Industrial) | −40 °C to +85 °C (Industrial) | −40 °C to +85 °C (Industrial) | −40 °C to +85 °C (Industrial) | −40 °C to +85 °C (Industrial) | −40 °C to +125 °C (Extended) |
| I/O Pins | 16 | 16 | 16 | 16 | 16 | 16 | 16 |
| ADC Channels (10-bit) | 17 channels | 17 channels | 17 channels | 17 channels | 17 channels | 17 channels | 17 channels |
Key Differentiators
- Lowest-voltage K22 family variant (2.0 V min) (vs PIC18F23K22-I/MV)
- Ultra-low deep-sleep current for battery designs (vs PIC18F25K22-I/MV)
- Compact UQFN-28 footprint (0.6 mm body thickness) (vs PIC18LF23K22T-I/ML)
- Industrial −40 to +85 °C temperature grade standard (vs PIC18LF23K22-E/MV)
Design Notes
Decoupling: Place one 100 nF low-ESR ceramic capacitor as close as possible between each VDD/VSS pair (pin 7/8), plus a bulk 1 µF to 10 µF tantalum or ceramic near the regulator output. For nanoWatt XLP designs, this network is critical — switching spikes on VDD directly modulate the internal bandgap reference and increase deep-sleep current. Place the bulk capacitor within 5 mm of the IC; the 100 nF cap must be within 2 mm with wide traces to VSS thermal pad (pin 28). Estimated: at 25 MHz operation with 8 KB Flash active, peak supply current is ~10 mA — the bulk cap must source this transient without significant droop.
The UQFN-28 thermal pad (pin 28) MUST be soldered to a PCB ground pour for both electrical and thermal performance. Use at least 8 thermal vias in the exposed pad (0.3 mm drill, 0.5 mm pitch) connecting the top copper pour to a full ground plane on the next inner layer. Failure to solder the thermal pad results in poor electrical grounding and elevated junction temperature at moderate loads. Keep all signal traces at least 0.2 mm from the package edges to avoid solder-bridging during reflow.
Crystal placement (RA6/RA7, pins 5–6) requires short traces to the crystal and load capacitors — keep total trace length under 5 mm each side to minimize parasitic capacitance. Place the load capacitors (typically 15–22 pF for an 8–25 MHz crystal) within 2 mm of the crystal pads with a ground guard ring. For low-EMI applications, route the ICSP clock (RB6/RCV6 = PGC, pin 15) and ICSP data (RB7 = PGD, pin 16) away from analog-sensitive traces such as AN0/AN1 (pins 26–27) and away from the comparator inputs.
Configuration word settings: leaving the LVP (Low-Voltage Programming) bit enabled when using a 5 V supply with PGECX/PGEDX in-circuit programming can cause inadvertent entry into programming mode if the ICSP pins float. Either disable LVP for cleaner operation, or pull the PGC pin to VDD through a 10 kΩ resistor to prevent false triggering. Also: the MCLR pin (pin 25) is a digital input only when not used for reset — do NOT connect it directly to VDD without a series resistor for in-circuit debug.
For noise-sensitive analog measurements, place a small RC low-pass filter (typically 100 Ω + 100 nF, fc ~16 kHz) on each ANx input to the ADC. This prevents digital switching noise on adjacent I/O pins from coupling into the ADC sample. The 17-channel ADC uses a sample-and-hold capacitor of ~10 pF — source impedance should be below 5 kΩ for full 10-bit accuracy at high conversion rates. The internal 1.024 V FVR reference can be routed to the ADC positive reference for ratiometric measurements without external reference parts.
Compliance Information
RoHS compliant per Microchip product page. Lead-free (Pb-free) UQFN-28 MV package, MSL-1 rating. Not AEC-Q100 qualified — for automotive safety-relevant applications, consider the PIC18F46K22 AEC-Q100 part instead. Halogen-free per Microchip declaration.
