PIC16F18426T-I/JQ - 28KB Flash 8-bit MCU, 32MHz, XLP | Microchip
MPN: PIC16F18426T-I/JQ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.62 | $1.62 |
| 10 | $1.46 | $14.60 |
| 100 | $1.28 | $128.00 |
| 500 | $1.12 | $560.00 |
| 1,000 | $0.99 | $990.00 |
PIC16F18426T-I/JQ Overview
An 8-bit microcontroller (MCU) is a compact processor that integrates a CPU, RAM, Flash program memory, peripherals, and I/O on a single silicon die. PIC microcontrollers use Microchip's enhanced mid-range RISC architecture, which executes one instruction per clock cycle (except branches), giving the PIC16F18426 effective throughput up to 32 MIPS. As a member of the voltage-regulator hierarchy, the MCU family sits above discrete logic and below SoC-class processors, and is widely deployed where low cost, deterministic behavior, and low power are required.
Key features of the PIC16F18426 include a 12-bit ADC with computation (ADCC), a 5-bit DAC, two PWM modules, a comparator, a Complementary Waveform Generator (CWG), and communication peripherals including EUSART, SPI, and I2C. The device operates from 1.8V to 5.5V and supports XLP sleep currents down to the low nanoampere range. Functional Safety (FuSa) features assist designers building IEC 61508 or similar safety-related systems. On-board peripherals operate autonomously via the CIP architecture, reducing CPU overhead for tasks such as signal generation and motor control.
The PIC16F18426 uses Microchip's enhanced mid-range core with a hardware multiplier and C compiler-friendly instruction set, supported by the MPLAB X IDE and XC8 toolchain. Internal oscillator accuracy is calibrated across voltage and temperature, and the device offers multiple clock sources from 32kHz to 32MHz, including a 32kHz Low-Power Internal Oscillator (LFINTOSC). Memory protection, code encryption, and a unique device ID are also included for IP security.
Typical applications include IoT sensor nodes, home appliances, lighting controls, low-power wireless HMI front-ends, battery-powered handheld instruments, and small motor-control subsystems. Designers value this part for its compact UQFN footprint, robust analog integration, and the maturity of Microchip's PIC ecosystem. When designing with this device, ensure the UQFN-16 (JQ) thermal pad is soldered to a sufficient ground copper pour for heat dissipation, and follow Microchip AN2586 layout guidelines to minimize EMI on ADC and PWM traces.
Drop-in alternatives for PIC16F18426T-I/JQ — 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 PIC16F18426T-I/JQ (same form factor and footprint) — differing in Package, ADC, Core Architecture, MSL Level, PWM Channels.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18426-I/JQ
✅ Drop-In✓ In Stock
$1.28 / Unit
View Datasheet →PIC16F18425T-I/JQ
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18424T-I/JQ
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →PIC16F18424-I/JQ
✅ Drop-In✓ In Stock
$1.2 / Unit
View Datasheet →PIC16F18425-I/JQ
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F18426T-I/JQ Maximum Ratings & Electrical Characteristics
| Core Architecture | Enhanced Mid-Range 8-bit PIC RISC |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data SRAM | 2 KB |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V |
| ADC | 12-bit ADCC |
| DAC | 5-bit DAC |
| PWM Channels | 2 x PWM |
| Comparators | Yes |
| CWG (Complementary Waveform Generator) | Yes |
| Communication Peripherals | EUSART, SPI, I2C |
| XLP (eXtreme Low Power) | Yes |
| Functional Safety (FuSa) | Yes |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Package | 16-UQFN (4x4 mm) - JQ |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16F18426T-I/JQ Pin Configuration
| Pin 1 | RA5 — GPIO / ADC input |
| Pin 2 | RA4 — GPIO / ADC input |
| Pin 3 | RA3 — GPIO / MCLR |
| Pin 4 | RA2 — GPIO / DAC output / ADC |
| Pin 5 | RA1 — GPIO / ICSPCLK |
| Pin 6 | RA0 — GPIO / ICSPDAT |
| Pin 7 | VSS — Ground |
| Pin 8 | RA7 — GPIO / OSC1 |
| Pin 9 | RA6 — GPIO / OSC2 |
| Pin 10 | RC5 — GPIO / PWM / EUSART |
| Pin 11 | RC4 — GPIO / PWM / EUSART |
| Pin 12 | RC3 — GPIO / SCL / SPI |
| Pin 13 | RC2 — GPIO / SDA / SPI |
| Pin 14 | RC1 — GPIO / SCL / SPI |
| Pin 15 | RC0 — GPIO / SDA / SPI |
| Pin 16 | VDD — Positive supply voltage |
Typical Applications
PIC16F18426T-I/JQ is suitable for 7 applications: IoT Sensor Nodes, Home Appliance Control, LED Lighting & Drivers, Battery-Powered Handheld Instruments, Industrial Sensor Hubs, Small Motor Control (Fan/Pump), Automotive Body Electronics (AEC-Q100 Equivalent Class).
IoT Sensor Nodes
The PIC16F18426T-I/JQ is ideal for battery-powered IoT sensor nodes thanks to its XLP (eXtreme Low Power) technology with nanoamp-range sleep currents and 1.8V to 5.5V operating range. The 12-bit ADCC provides direct sensor signal conditioning for temperature, humidity, and pressure transducers without external amplifiers, reducing BOM cost. The 28KB Flash accommodates over-the-air (OTA) firmware update stubs and protocol stacks for BLE/Zigbee/LoRa host controllers. The 32MHz core (32 MIPS) handles on-node edge filtering before transmit, while the 16-UQFN (4x4 mm) package fits inside miniature wearables and smart-home sensor pods.
Recommended
Home Appliance Control
The PIC16F18426T-I/JQ drives user interfaces and small motor loads in washing machines, dishwashers, and microwave ovens. Its two PWM channels and Complementary Waveform Generator (CWG) directly control brushless DC and stepper motor drivers without external logic. The integrated 5-bit DAC sets reference voltages for analog front-ends, while EUSART and SPI connect to LED display drivers and keypads. Functional Safety (FuSa) features support IEC 60730 class B compliance required by major appliance manufacturers. The 16-UQFN package and industrial -40C to +85C rating tolerate the thermal environment behind a washing-machine control panel.
Recommended
LED Lighting & Drivers
The PIC16F18426T-I/JQ excels in intelligent LED lighting with its 12-bit ADCC for ambient light sensing and two PWM channels for tunable white and RGB color mixing. The CWG generates high-resolution dimming waveforms down to sub-1% duty cycles required for premium architectural lighting. EUSART and I2C enable DALI, 0-10V, and DMX512 protocol bridging. XLP sleep currents under 100nA permit always-on standby for wireless control readiness. The 16-UQFN footprint and 1.8V-5.5V range suit driver PCB layouts alongside high-voltage LED strings.
Recommended
Battery-Powered Handheld Instruments
Handheld multimeters, portable gas detectors, and medical measurement devices benefit from the PIC16F18426T-I/JQ's XLP technology, which extends battery life to multi-year runtimes on a single coin cell. The 12-bit ADCC with computation hardware performs RMS, averaging, and threshold detection without CPU intervention, freeing the core for display updates via SPI. The 2KB SRAM buffers sensor logs between deep sleeps, while the 28KB Flash stores calibration coefficients and menu strings. The compact 16-UQFN package and industrial temperature range support sealed, ruggedized enclosures used in field service.
Recommended
Industrial Sensor Hubs
Factory automation PLCs and remote I/O modules use the PIC16F18426T-I/JQ for distributed sensor conditioning over RS-485 networks. The integrated EUSART with LIN master capability and 12-bit ADCC support 4-20mA loop and RTD thermocouple inputs on a single chip. Functional Safety (FuSa) diagnostics, including windowed watchdog and oscillator fail-safe, meet IEC 61508 SIL-2 requirements. Two PWMs drive proportional valves, while SPI connects to isolated gate drivers for high-side switches. The 16-UQFN footprint and -40C to +85C rating survive factory floor conditions including vibration and humidity.
Recommended
Small Motor Control (Fan/Pump)
The PIC16F18426T-I/JQ drives low-power brushless DC fans and pumps with its CWG and dual PWMs, generating complementary drive signals for half-bridge FET drivers. The 5-bit DAC sets speed-reference voltages, while the integrated comparator implements back-EMF zero-cross detection for low-speed commutation. Functional Safety diagnostics detect stall and overcurrent conditions, shutting down outputs safely. The 28KB Flash accommodates sensorless FOC or trapezoidal commutation algorithms, while the 16-UQFN package fits inside the motor housing for integrated electronics.
Recommended
Automotive Body Electronics (AEC-Q100 Equivalent Class)
While the PIC16F18426T-I/JQ is industrial grade (-40C to +85C, "I" suffix), the same silicon drives automotive body modules such as seat controllers, mirror adjusters, and HVAC flaps where full AEC-Q100 qualification is not mandatory. LIN bus support via EUSART, plus the 12-bit ADCC for potentiometer position sensing, suits distributed body-control networks. The Functional Safety (FuSa) diagnostics help meet ISO 26262 ASIL-A targets. The 16-UQFN package and integrated core-independent peripherals minimize external components, lowering per-node cost in zonal architectures.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18426T-I/JQ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18426-I/JQ | PIC16F18425T-I/JQ | PIC16F18424T-I/JQ | PIC16F18424-I/JQ | PIC16F18425-I/JQ |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 16-UQFN (JQ, 4x4 mm) | 16-UQFN (JQ, 4x4 mm) - same | 16-UQFN (JQ, 4x4 mm) - same | 16-UQFN (JQ, 4x4 mm) - same | 16-UQFN (JQ, 4x4 mm) - same | 16-UQFN (JQ, 4x4 mm) - same |
| Program Memory (Flash) | 28 KB | 28 KB (same) | 14 KB (-50%) | 7 KB (-75%) | 7 KB (-75%) | 14 KB (-50%) |
| RAM | 2 KB | 2 KB (same) | 1 KB (-50%) | 512 B (-75%) | 512 B (-75%) | 1 KB (-50%) |
| Maximum Frequency | 32 MHz | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V (same) | 1.8 V to 5.5 V (same) | 1.8 V to 5.5 V (same) | 1.8 V to 5.5 V (same) | 1.8 V to 5.5 V (same) |
| ADC | 12-bit ADCC | 12-bit ADCC (same) | 12-bit ADCC (same) | 12-bit ADCC (same) | 12-bit ADCC (same) | 12-bit ADCC (same) |
| Functional Safety (FuSa) | Yes | Yes (same) | Yes (same) | Yes (same) | Yes (same) | Yes (same) |
| Packaging | Tape & Reel | Tube | Tape & Reel | Tape & Reel | Tube | Tube |
| Operating Temperature | -40 C to +85 C (I grade) | -40 C to +85 C (same) | -40 C to +85 C (same) | -40 C to +85 C (same) | -40 C to +85 C (same) | -40 C to +85 C (same) |
Key Differentiators
- Largest Flash in 16-pin UQFN footprint (vs PIC16F18425T-I/JQ)
- Industrial temperature grade in Tape & Reel (vs PIC16F18426-I/JQ)
- Functional Safety (FuSa) hardware diagnostics (vs PIC16F18346)
Design Notes
Solder the exposed thermal pad (EP) of the 16-UQFN (JQ) package to a continuous ground copper pour of at least 10x10 mm on the top layer, with thermal vias (0.3mm drill, 0.5mm pitch) stitching the EP to inner ground planes. Without EP soldering, the 16-UQFN package can run 10-15 C hotter under sustained PWM load, reducing MTBF. Follow Microchip AN2586 for UQFN PCB layout guidelines, especially the no-track-under-pad rule for the EP region.
Do not leave the MCLR pin (RA3 on this device) floating. Always tie MCLR through a 10k pull-up to VDD, optionally with a 100nF cap to ground for noise immunity. Floating MCLR is the most common cause of erratic resets in PIC16F18426 designs. For ICSP programming, add a 4.7k pull-down on RA0/RA1 (PGD/PGC) so the device does not enter unintended modes during power-up brownouts.
Place a 100nF decoupling capacitor within 3 mm of the VDD pin and a bulk 10uF capacitor near the EP ground pour to meet PIC16F184xx VDD ripple requirements. XLP sleep currents below 100 nA depend on clean power rails; switching noise above 50 mVpp can increase Iq by 10-100x. Avoid routing high-frequency PWM traces near the VDD pin or ferrite bead to suppress conducted EMI from the ADC reference.
Compliance Information
Industrial grade (-40C to +85C) per Microchip product page. Not AEC-Q100 qualified; automotive designs should select PIC16F18426-E/xxx automotive variants. RoHS and lead-free compliance confirmed by Microchip packaging datasheet.
