PIC18F24K22-I/SSVAO - 16KB Flash 8-bit MCU, SSOP-28 | Microchip
MPN: PIC18F24K22-I/SSVAO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.07 | $30.70 |
| 100 | $2.74 | $274.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.18 | $2,180.00 |
PIC18F24K22-I/SSVAO Overview
A microcontroller (MCU) is a single integrated circuit that combines a CPU, non-volatile program memory (typically Flash), working RAM, and a configurable set of peripheral blocks (ADC, timers, communication controllers, GPIO). PIC18F-family devices use a 16-bit instruction set with an 8-bit data path (modified Harvard architecture), positioning them between baseline PIC10/12/16 parts and the 16-bit dsPIC/PIC24 families in the Microchip 8-to-32 bit scalability story. They are typically deployed in cost-sensitive embedded designs where deterministic interrupt latency, low sleep current, and small footprint matter more than raw compute throughput.
Key features of this part include a 64 MHz maximum clock (16 MIPS instruction throughput), an industrial -40C to +85C temperature range tied to the /I suffix, Brown-Out Reset (BOR), Power-On Reset (POR), dual comparators, nine timers, a Watchdog Timer, and on-chip debug via the MPLAB Snap / ICD interfaces. The XLP nanoWatt technology brings sleep currents below typical MCU class averages, suiting battery-powered designs.
The PIC18F24K22 silicon uses a CMOS process with a wide 2.7 V to 5.5 V supply range that allows direct operation from a single Li-ion cell, two AA cells, or a regulated 3.3 V / 5 V rail. The 19-channel 10-bit converter and dual comparators make it suitable for sensor-fusion front ends, while the dual USART, dual SPI, and dual I2C interfaces support multi-bus industrial nodes.
Typical applications include automotive body and sensor nodes (VAO suffix designates Automotive grade), industrial control, low-power sensor interfaces, LIN slave nodes, and consumer appliances. The wide operating voltage and XLP modes extend use to metering and portable instrumentation.
Designers should budget decoupling capacitance (a 100 nF plus bulk) close to VDD/VSS pins, follow Microchip's SSOP-28 land recommendations, and use the MPLAB X IDE with the XC8 compiler for the lowest-power sleep-mode firmware.
This page consolidates pricing, drop-in alternatives, and engineering design notes curated from the Microchip datasheet and authorized distributor pages, complementing the manufacturer documentation with selection-ready guidance.
Drop-in alternatives for PIC18F24K22-I/SSVAO — 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 PIC18F24K22-I/SSVAO (same form factor and footprint) — differing in Package, Timers, ADC, Program Memory (Flash), Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F24K22-I/SS
✅ Drop-In✓ In Stock
$1.32 / Unit
View Datasheet →PIC18F24K22T-I/SSVAO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F24K42-I/SSVAO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F26K22-I/SSVAO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F26K83-I/SSVAO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F24K22-E/SSVAO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F24K22-I/SSVAO Maximum Ratings & Electrical Characteristics
| Product Family | PIC18F K-series (PIC18(L)F2xK22) |
| Core | 8-bit PIC18 RISC (modified Harvard) |
| Maximum CPU Frequency | 64 MHz |
| Instruction Throughput | 16 MIPS |
| Program Flash Memory | 16 KB (8K x 16) |
| Data SRAM | 768 bytes |
| Data EEPROM | 256 bytes |
| Supply Voltage Range | 2.7 V to 5.5 V |
| ADC | 19 channels x 10-bit |
| DAC | 2 channels (10-bit) |
| Comparators | 2 |
| Timers | 9 |
| Communication Interfaces | 2x I2C, 2x SPI, 2x USART, LIN |
| Package | 28-pin SSOP (5.30 mm body) |
| Operating Temperature | -40C to +85C (industrial, /I suffix) |
| Qualification Suffix | VAO (Automotive grade) |
| Low-Power Technology | nanoWatt XLP |
| Watchdog Timer | Yes (WDT) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC18F24K22-I/SSVAO Pin Configuration
| Pin 1 | RA3/AN3 — GPIO RA3 / analog input AN3 |
| Pin 2 | RA4 — GPIO RA4 |
| Pin 3 | RA5/AN4 — GPIO RA5 / analog input AN4 |
| Pin 4 | RA6 — GPIO RA6 |
| Pin 5 | RA7 — GPIO RA7 |
| Pin 6 | VSS — Ground reference |
| Pin 7 | VDD — Positive supply voltage |
| Pin 8 | RB0/INT0 — GPIO RB0 / external interrupt 0 |
| Pin 9 | RB1 — GPIO RB1 |
| Pin 10 | RB2 — GPIO RB2 |
| Pin 11 | RB3 — GPIO RB3 |
| Pin 12 | RB4 — GPIO RB4 |
| Pin 13 | RB5 — GPIO RB5 |
| Pin 14 | RB6/PGC — GPIO RB6 / ICSP clock |
| Pin 15 | RB7/PGD — GPIO RB7 / ICSP data |
| Pin 16 | RC0 — GPIO RC0 |
| Pin 17 | RC1 — GPIO RC1 |
| Pin 18 | RC2 — GPIO RC2 |
| Pin 19 | RC3 — GPIO RC3 |
| Pin 20 | RC4 — GPIO RC4 |
| Pin 21 | RC5 — GPIO RC5 |
| Pin 22 | RC6 — GPIO RC6 |
| Pin 23 | RC7 — GPIO RC7 |
| Pin 24 | VSS — Ground reference |
| Pin 25 | VDD — Positive supply voltage |
| Pin 26 | RA0/AN0 — GPIO RA0 / analog input AN0 |
| Pin 27 | RA1/AN1 — GPIO RA1 / analog input AN1 |
| Pin 28 | RA2/AN2 — GPIO RA2 / analog input AN2 |
Typical Applications
PIC18F24K22-I/SSVAO is suitable for 6 applications: Automotive LIN Sensor Nodes, Industrial Sensor Interface Modules, Battery-Powered Portable Instrumentation, Consumer Appliance Control Boards, Low-Power IoT Edge Nodes, HVAC and Building Automation.
Automotive LIN Sensor Nodes
The PIC18F24K22-I/SSVAO is well suited to automotive LIN 1.x/2.0 slave nodes for body and chassis sensors. Its integrated LIN-capable USART, dual I2C/SPI channels for local peripherals, and 19-channel 10-bit ADC let a single device digitize a multi-sensor cluster (e.g., seat-occupancy or HVAC blend door) and stream the data back over the LIN bus. The VAO automotive qualification suffix and 2.7 V to 5.5 V operating range tolerate 12 V automotive rail transients through an upstream regulator. Designers should pair the part with a Microchip LIN transceiver such as the ATA6626 and a watchdog-configured firmware loop to meet OEM network-management requirements.
Recommended
Industrial Sensor Interface Modules
In the factory-equipped industrial automation segment, the PIC18F24K22-I/SSVAO powers 4 mA-to-20 mA analog front ends, RTD conditioning boards, and IO-Link-like sensor hubs. The 19 ADC channels handle multi-zone analog scanning, dual comparators serve threshold-trigger wake-up, and the nanoWatt XLP sleep modes drop consumption during idle windows to under typical MCU class averages. The 64 MHz CPU delivers 16 MIPS, sufficient for digital filtering of the sampled signal without an external DSP. Designers commonly add a 4-20 mA DAC chip and a digital potentiometer to form a complete two-wire sensor head, with the SSOP-28 footprint keeping the BOM footprint small.
Recommended
Battery-Powered Portable Instrumentation
Portable hand-held meters and remote data loggers leverage the PIC18F24K22-I/SSVAO's nanoWatt XLP low-power modes and wide 2.7 V to 5.5 V supply range to run directly from a 3.6 V Li-SOCl2 primary cell or two AA alkaline cells. Sleep currents in the nanoampere class extend shelf life past the battery self-discharge horizon, while the 64 MHz active throughput is sufficient for periodic sensor acquisition and BLE-style UART data forwarding. The 19 ADC channels multiplex multiple sensor inputs (temperature, pressure, voltage) behind a single MCU. Designers typically add an MCP1643 boost converter for cell-level efficiency and an MCP9700 thermal diode for cold-junction compensation.
Recommended
Consumer Appliance Control Boards
Washing machines, dishwashers, coffee makers, and air purifiers benefit from the PIC18F24K22-I/SSVAO's mix of 9 timers (PWM-friendly), dual comparators for zero-cross detection, and dual I2C/SPI for display plus user-interface expansion. The 64 MHz core easily drives graphical user interface tasks, while the 256-byte EEPROM stores user preferences and counters that survive power cycles. Designers can target a single MCU for both control loop and human-machine interface, reducing BOM. Although this part is automotive-graded, the same die family is widely used in appliance main boards through the PIC18F24K22-I/SS industrial variant. Ensure IEC 60730 / UL 60730 class B software self-test libraries are integrated for safety-critical appliances.
Recommended
Low-Power IoT Edge Nodes
IoT edge nodes that aggregate sensor data and forward it over sub-GHz, BLE, or Wi-Fi companion radios fit the PIC18F24K22-I/SSVAO profile. The MCU serves as a power-efficient host for a sensor hub, while a separate IC handles the radio link; the PIC18 sits in deep sleep until an event timer, comparator trigger, or ADC threshold wakes it. The 19 ADC channels aggregate multiple analog sensors (light, temperature, gas, sound) into a single digital stream, while dual I2C/SPI connect to a digital sensor cluster. The VAO automotive qualification also suits IoT nodes deployed in harsh environment vehicles, trailers, or outdoor enclosures where temperature swings exceed consumer-grade limits.
Recommended
HVAC and Building Automation
HVAC controllers, smart thermostats, and building automation nodes use the PIC18F24K22-I/SSVAO for multi-channel analog scanning (temperature, humidity, CO2, occupancy) plus actuator drive via PWM timers. The dual USART supports BACnet MS-TP or Modbus RTU over RS-485 transceivers, while dual I2C drives local sensors and displays. The nanoWatt XLP sleep modes suit battery-backed thermostats that spend most of their life idle, waking on a periodic RTC tick or user button press. The industrial temperature grade and automotive-graded VAO qualification cover unconditioned mechanical rooms and rooftop units where temperature extremes are common.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F24K22-I/SSVAO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F24K22-I/SS | PIC18F24K22T-I/SSVAO | PIC18F24K42-I/SSVAO | PIC18F26K22-I/SSVAO |
|---|---|---|---|---|---|
| Package | SSOP-28 | SSOP-28 (same) | SSOP-28 (same) | SSOP-28 (same) | SSOP-28 (same) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 16 KB | 16 KB (same) | 16 KB (same) | 16 KB to 64 KB (variant dependent) | 64 KB |
| Data SRAM | 768 bytes | 768 bytes (same) | 768 bytes (same) | up to 4 KB (variant dependent) | 3.8 KB |
| Data EEPROM | 256 bytes | 256 bytes (same) | 256 bytes (same) | up to 1 KB | 1 KB |
| Maximum CPU Frequency | 64 MHz | 64 MHz (same) | 64 MHz (same) | 64 MHz (same) | 64 MHz (same) |
| ADC Channels | 19 channels x 10-bit | 19 channels x 10-bit (same) | 19 channels x 10-bit (same) | up to 24 channels x 12-bit | 17 channels x 10-bit |
| Operating Temperature | -40C to +85C | -40C to +85C (same) | -40C to +85C (same) | -40C to +85C | -40C to +85C |
| Automotive Grade (VAO) | Yes (VAO) | No (industrial only) | Yes (VAO) | Yes (VAO) | Yes (VAO) |
Key Differentiators
- Automotive-grade qualification via VAO suffix (vs PIC18F24K22-I/SS)
- Compact 28-SSOP footprint with full peripheral set (vs PIC18F24K42-I/SSVAO)
- nanoWatt XLP ultra-low-power sleep modes (vs PIC18F26K22-I/SSVAO)
Design Notes
Place a 100 nF ceramic decoupling capacitor as close as possible to each VDD/VSS pin pair, plus a bulk capacitor (e.g., 10 uF tantalum or ceramic) on the main VDD rail. Per Microchip PIC18F K-series hardware guidelines, decoupling placement should be within 2-3 mm of the IC pins to suppress transient currents from the internal core and ADC. For SSOP-28, pay special attention to pins 7/24 and 25/26 which are paired supply pins.
Follow Microchip's SSOP-28 land pattern recommendations: 0.40 mm pad width and 0.65 mm pitch with proper thermal relief spokes connecting the thermal pad. For automotive applications with VAO qualification, ensure the PCB fabrication process and solder profile meet IPC J-STD-020 MSL handling requirements, and run a reflow profile consistent with the JEDEC J-STD-020 MSL rating on the device label.
Do not exceed the maximum CPU frequency versus supply voltage relationship: at 2.7 V to 3.0 V, the part supports lower clock speeds than at 4.5 V to 5.5 V. Always configure the OSCCON/PLL blocks after verifying the VDD range. Failure to observe this can lock up the part. For LIN bus applications, ensure the USART baud-rate error is below 2 percent and the LIN transceiver recessive voltage is within the USART input threshold window. Note: do not rely on internal weak pull-ups for I2C bus lines; external 4.7 kohm pull-ups are recommended per Microchip hardware guidelines.
For designs that route the analog ADC inputs near PWM outputs or high-current switching nodes, separate the analog ground (AGND) and digital ground (DGND) planes and join them at a single point under or near the MCU. The PIC18F24K22 has separate VDD/VSS pairs for the ADC; connect all VDD pins to the same supply and each pin to its own local decoupling capacitor. Without proper grounding, AC noise from the digital core can couple into ADC samples and reduce effective SNR.
Compliance Information
RoHS compliance per Microchip product page. AEC-Q100 automotive qualification indicated by VAO suffix per Microchip's part-numbering convention; verify exact grade and PPAP level directly with Microchip engineering for safety-critical automotive applications.
