PIC18F24K22T-I/MV - 16KB Flash 8-bit MCU 28-UQFN | Microchip
MPN: PIC18F24K22T-I/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.1 | $3.10 |
| 10 | $2.85 | $28.50 |
| 100 | $2.55 | $255.00 |
| 500 | $2.2 | $1,100.00 |
| 1,000 | $1.95 | $1,950.00 |
PIC18F24K22T-I/MV Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data RAM, and integrated peripherals such as timers, ADC/DAC, communication interfaces, and GPIO. PIC18 MCUs use a modified Harvard RISC architecture that delivers 1 instruction per clock cycle (vs 12 for legacy PIC16), giving higher throughput at lower clock rates. They sit within the broader semiconductor hierarchy: MCU -> embedded processor -> semiconductor device, and are widely used where deterministic real-time control, low power, and small package size are required.
Key features of the PIC18F24K22T-I/MV include nanoWatt XLP technology with multiple low-power sleep modes (down to ~20 nA typical), 25 general-purpose I/O pins, an internal 16 MHz oscillator with PLL support, and 2 capture/compare/PWM modules with enhanced resolution. The 256-byte data EEPROM supports 1M erase/write cycles, and the Flash supports 10K erase/write cycles. Programmable BOR, POR, and WDT simplify firmware safety.
Technically, the part runs from 2.3V to 5.5V across -40C to +125C (E temperature grade) or -40C to +85C (I grade) and is implemented in CMOS process technology. The 28-UQFN package with 4x4 mm footprint is ideal for space-constrained designs and supports surface-mount reflow soldering with MSL3 moisture sensitivity. Self-programmability under software control supports in-application firmware updates without external programmers.
Typical applications include low-power IoT sensor nodes, battery-powered instrumentation, automotive body controllers, consumer appliance control panels, and USB/HID edge nodes when paired with an external transceiver. The wide voltage range and rich peripheral mix make it a strong fit for industrial sensor interfaces and motor-control front ends.
When designing with this MCU, plan for ICSP programming on pins RB6/ICSP-CLK and RB7/ICSP-DAT, ensure adequate bulk decoupling (10 uF + 100 nF near VDD), and reserve an unused I/O for MCLR pull-up. The UQFN package requires thermal pad soldering per JEDEC J-STD-020 reflow profiles.
This page consolidates distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC18F24K22T-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 PIC18F24K22T-I/MV (same form factor and footprint) — differing in Package, ADC, Maximum CPU Speed, Operating Temperature, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F24K22-I/MV
✅ Drop-In✓ In Stock
$1.96 / Unit
View Datasheet →PIC18F24K22-E/MV
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →PIC18F23K22T-I/MV
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →PIC18F25K22T-I/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F24K22T-I/MV Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 (8-bit RISC, modified Harvard) |
| Program Memory (Flash) | 16 KB (8K x 16) |
| Data SRAM | 768 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Frequency | 64 MHz |
| Instruction Throughput | 1 instruction / 4 clock cycles (PIC18 pipeline) |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| I/O Pins | 25 |
| ADC | 10-bit, up to 17 channels |
| Comparators | 2 |
| CCP/ECCP Modules | 2 CCP, 1 ECCP |
| Enhanced USART | 2 |
| MSSP (SPI/I2C) | 2 |
| Timers (8/16-bit) | 4 (T0L, T1, T2, T3) |
| Operating Temperature | -40 C to +85 C (Industrial, I grade) |
| Package | 28-UQFN (4x4 mm) |
| Mounting Type | Surface Mount |
| MSL Level | MSL3 |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC18F24K22T-I/MV Pin Configuration
| Pin 1 | MCLR/RE3 — Master Clear reset input / I/O port E3 |
| Pin 2 | RA0 — Port A bit 0 / AN0 |
| Pin 3 | RA1 — Port A bit 1 / AN1 |
| Pin 4 | RA2 — Port A bit 2 / AN2 |
| Pin 5 | RA3 — Port A bit 3 / AN3 / VREF+ |
| Pin 6 | RA4 — Port A bit 4 / AN4 / T0CKI |
| Pin 7 | RA5 — Port A bit 5 / AN5 / VREF-/SS |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RA7/OSC1 — Port A bit 7 / crystal oscillator input |
| Pin 10 | RA6/OSC2 — Port A bit 6 / crystal oscillator output |
| Pin 11 | RC0 — Port C bit 0 |
| Pin 12 | RC1 — Port C bit 1 |
| Pin 13 | RC2 — Port C bit 2 / CCP1 |
| Pin 14 | RC3 — Port C bit 3 / SCL |
| Pin 15 | RC4 — Port C bit 4 / SDA |
| Pin 16 | RC5 — Port C bit 5 / SDO |
| Pin 17 | RC6 — Port C bit 6 / TX/CK |
| Pin 18 | RC7 — Port C bit 7 / RX/DT |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply voltage |
| Pin 21 | RB0 — Port B bit 0 / INT0 / AN12 |
| Pin 22 | RB1 — Port B bit 1 / INT1 / AN10 |
| Pin 23 | RB2 — Port B bit 2 / INT2 / AN8 |
| Pin 24 | RB3 — Port B bit 3 / INT3 / AN9 / CCP2 |
| Pin 25 | RB4 — Port B bit 4 / AN11 |
| Pin 26 | RB5 — Port B bit 5 / AN13 |
| Pin 27 | RB6/PGC — Port B bit 6 / ICSP programming clock |
| Pin 28 | RB7/PGD — Port B bit 7 / ICSP programming data |
Typical Applications
PIC18F24K22T-I/MV is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Industrial Sensor Interface & Process Control, Automotive Body and Comfort Electronics, Consumer Appliance Control Panels, USB HID and Edge Connectivity Devices, Portable Medical and Wellness Devices.
Battery-Powered IoT Sensor Nodes
The PIC18F24K22T-I/MV's nanoWatt XLP technology delivers sleep currents down to ~20 nA, making it ideal for coin-cell or 2xAA battery-powered sensor nodes that wake periodically to read sensors and transmit via SPI/I2C. Its 2.3-5.5 V VDD range accommodates depleted battery stacks down to ~2 V without boost regulators, preserving the 16 MIPS peak performance for measurement bursts. The 16 KB Flash holds typical LoRaWAN or BLE-stack firmware with room for application code, while the 256-byte EEPROM logs calibration data across 1M write cycles. With 25 GPIO and 17 ADC channels, the MCU can interface directly with multi-sensor boards including temperature, humidity, and motion IMUs.
Recommended
Industrial Sensor Interface & Process Control
In PLC remote-I/O modules and 4-20 mA loop interfaces, the PIC18F24K22T-I/MV provides 17 channels of 10-bit ADC and two comparators that handle signal conditioning and threshold detection for thermocouples, RTDs, and bridge sensors. Its 2 EUSART ports support RS-485 half-duplex with auto-direction control via the comparators, while dual MSSP peripherals drive SPI ADC front-ends or I2C sensor clusters. The 64 MHz clock and 16 MIPS throughput execute PID control loops with sub-millisecond latency, and the industrial -40C to +85C rating suits factory-floor environments. Hardware ECCP modules generate precise PWM outputs for valve and actuator drivers.
Recommended
Automotive Body and Comfort Electronics
For non-safety automotive subsystems such as window lift controllers, seat heaters, mirror adjusters, and interior lighting, the PIC18F24K22T-I/MV delivers the right mix of peripherals at industrial cost. The 25 GPIO can drive LED matrices, H-bridges, and BLDC motors via the ECCP/PWM modules with dead-band control. Two comparators implement hardware overcurrent protection, while EUSART and LIN-compatible UART support LIN 2.x slave communication for body-control networks. The wide 2.3-5.5 V supply tolerates automotive cranking transients when paired with an external TVS and reset supervisor. AEC-Q100 grade variants exist for higher-reliability requirements.
Recommended
Consumer Appliance Control Panels
The PIC18F24K22T-I/MV's small 4x4 mm 28-UQFN footprint fits the slim housings of modern washing machines, microwaves, and induction cooktops. Its 25 GPIO directly drive 7-segment LED displays, capacitive touch keypads via the mTouch peripheral, and buzzer/relay outputs. The 16 KB Flash hosts state-machine firmware with EEPROM-backed user settings (wash cycles, presets) that survive power cycles across 1M write cycles. The 16 MIPS throughput handles real-time UI updates while simultaneously servicing sensor inputs via the 10-bit ADC, all from a single 3.3 V or 5 V rail. Industrial temperature grade ensures reliable operation in kitchen environments.
Recommended
USB HID and Edge Connectivity Devices
When paired with the external MCP2200 or PIC18F14K50 USB bridge, the PIC18F24K22T-I/MV implements custom HID devices such as barcode scanners, keypads, and configuration tools. The 16 MIPS throughput and 2 EUSART ports enable concurrent USB-via-UART bridging, while 16 KB Flash holds HID descriptor tables and command parsers. The two MSSP peripherals support I2C/SPI master functions for external flash or EEPROM expansion when logs exceed internal EEPROM endurance. The 2.3-5.5 V range supports both USB-bus-powered 5 V operation and battery-backed portable use.
Recommended
Portable Medical and Wellness Devices
The PIC18F24K22T-I/MV's nanoWatt XLP sleep currents (~20 nA typical) extend battery life in portable pulse oximeters, blood-pressure monitors, and personal health wearables. Its 10-bit ADC at up to 17 channels captures photoplethysmography (PPG) signals and battery voltage with sufficient resolution, while dual comparators detect signal thresholds for heart-rate calculation. The 64 MHz core executes DSP-style filtering algorithms for SpO2 calculation in real time. On-chip EEPROM stores patient profiles and calibration data with 1M-cycle endurance, and the industrial temperature range accommodates skin-contact and ambient variations.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F24K22T-I/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F24K22-I/MV | PIC18F24K22-E/MV | PIC18F23K22T-I/MV | PIC18F25K22T-I/MV |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-UQFN (4x4 mm) | 28-UQFN (4x4 mm) - same | 28-UQFN (4x4 mm) - same | 28-UQFN (4x4 mm) - same | 28-UQFN (4x4 mm) - same |
| Flash Memory | 16 KB | 16 KB | 16 KB | 8 KB (-50%) | 32 KB (+100%) |
| SRAM | 768 bytes | 768 bytes | 768 bytes | 512 bytes (-33%) | 1536 bytes (+100%) |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Max CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Operating Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| Temperature Grade | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Packaging Format | Tape & Reel (T-suffix) | Tray (no T-suffix) | Tube/Tray (E-suffix) | Tape & Reel | Tape & Reel |
Key Differentiators
- Industrial-grade 28-UQFN in Tape & Reel format (vs PIC18F24K22T-I/ML (28-QFN 6x6 mm))
- 16 KB Flash with 768 bytes SRAM balance (vs PIC18F23K22T-I/MV)
- nanoWatt XLP extreme low-power sleep (vs dsPIC33FJ16GS502-E/MX (16-bit DSC))
Design Notes
Place a 10 uF bulk capacitor plus a 100 nF ceramic decoupling cap adjacent to the VDD pin (pin 20). Connect VSS (pins 8 and 19) to a low-impedance ground plane with multiple vias. The PIC18F24K22T-I/MV's nanoWatt XLP sleep modes draw ~20 nA typical with RTCC running, so for coin-cell designs switch to Sleep during idle periods and wake via WDT or INT0 interrupt.
The 28-UQFN package exposes a thermal pad on its underside that MUST be soldered to a corresponding copper land on the PCB for mechanical reliability and thermal dissipation. Follow Microchip AN2073 and JEDEC J-STD-020 MSL3 handling: bake at 125 C for 24 hours before assembly if the humidity indicator card is pink. Maintain at least 0.20 mm clearance between the thermal pad and signal traces to prevent solder wicking.
Do not leave MCLR floating - either tie directly to VDD through a 10 kohm pull-up or drive with an open-drain supervisor. For ICSP, pins RB6/PGC and RB7/PGD are required; do not repurpose them for high-current loads. The ADC reference voltage (VREF+ on RA3) must be bypassed with 100 nF and limited source impedance below 3 kohm for full 10-bit accuracy. If unused, configure all pins as outputs low or inputs with internal weak pull-ups to minimize I_leak.
Compliance Information
RoHS and REACH compliant per Microchip product declaration. Industrial-grade (I-suffix) is not AEC-Q100 qualified; for automotive, refer to PIC18F24K22T-I/MVVAO variant which is AEC-Q100 qualified. Halogen-free per Microchip package materials disclosure.
