PIC16F18326T-I/JQ - 8-bit 32MHz 28KB Flash XLP MCU | Microchip
MPN: PIC16F18326T-I/JQ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.95 | $1.95 |
| 10 | $1.78 | $17.80 |
| 100 | $1.52 | $152.00 |
| 500 | $1.34 | $670.00 |
| 1,000 | $1.18 | $1,180.00 |
PIC16F18326T-I/JQ Overview
A microcontroller (MCU) is a single-chip computer containing a CPU, memory (Flash/SRAM/EEPROM), and programmable peripherals such as timers, ADCs, and communication interfaces. MCUs sit within the embedded computing hierarchy: microcontroller -> embedded processor -> semiconductor IC. PIC16F18326 adds value by integrating XLP idle/sleep modes, Peripheral Pin Select (PPS), and CIP blocks (CLC, NCO, CWG, CCP, PWM) that offload tasks from the CPU, reducing firmware complexity and active power.
Key features include a 10-bit ADC with up to 11 channels, a 5-bit DAC, two comparators, a 10-bit PWM with complementary waveform generation, and communication peripherals (EUSART, SPI, I2C). PPS remaps digital peripheral pins to I/O without rewiring the PCB. XLP technology delivers nanoWatt sleep currents in the order of tens of nA with retention, suiting energy-harvesting and battery-powered products. CIP blocks such as the Configurable Logic Cell (CLC), Numerically Controlled Oscillator (NCO), and Complementary Waveform Generator (CWG) execute hardware-level tasks, leaving the CPU idle and minimizing firmware footprint.
The 16-pin UQFN (4x4 mm) footprint offers a compact, thermally enhanced layout with an exposed pad that must be soldered for proper dissipation and ground integrity. The "T" suffix denotes Tape & Reel packaging, the "I" denotes the industrial -40C to +85C temperature grade, and "/JQ" specifies the UQFN-16 (4x4) package. The device is qualified to Microchip's Functional Safety (FuSa) standard and supports Class B safety library integration, easing IEC 60730 / UL 1998 compliance for household and appliance applications.
Typical applications include IoT sensor nodes, low-power wireless controllers, home automation, HVAC thermostats, small appliance controls, LED lighting drivers, and battery-powered instruments where code density, peripheral count, and sleep current matter. The combination of 28 KB Flash and 2 KB SRAM should be evaluated against compiled code size; the FuSa + CIP + XLP feature set positions it for safety-critical embedded products.
When designing with this part, dedicate the UQFN exposed pad to a continuous ground pour, place a 100 nF + 1 uF decoupling pair within 2 mm of VDD, and use the PPS routing tool in MPLAB X to assign peripheral pins before laying out the PCB. PPS mappings must be unlocked in firmware before digital peripherals drive their assigned I/O lines.
This page synthesizes distributor pricing, drop-in alternative pinout data, and practical design notes not always covered in the manufacturer datasheet.
Drop-in alternatives for PIC16F18326T-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 PIC16F18326T-I/JQ (same form factor and footprint) — differing in ADC, CPU Speed, DAC, Operating Temperature, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18325T-I/JQ
✅ Drop-In✓ In Stock
$0.79 / Unit
View Datasheet →PIC16F18326T-E/JQ
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18325T-E/JQ
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18324T-I/JQ
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18323T-I/JQ
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18326T-I/JQ Maximum Ratings & Electrical Characteristics
| Product Family | PIC16F183xx |
| Core Architecture | 8-bit PIC RISC |
| CPU Speed | 32 MHz |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data SRAM | 2 KB |
| Data EEPROM | 256 bytes |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| Operating Temperature | -40 C to +85 C (industrial) |
| Package | 16-pin UQFN (4x4 mm) with exposed pad |
| ADC | 10-bit, up to 11 channels |
| DAC | 5-bit |
| Comparators | 2 |
| PWM | 10-bit, with Complementary Waveform Generator (CWG) |
| Communication | EUSART, SPI, I2C |
| Peripheral Pin Select (PPS) | Yes |
| Core Independent Peripherals (CIP) | CLC, NCO, CWG, CCP, PWM |
| XLP (eXtreme Low Power) | Yes - nanoWatt sleep modes |
| Functional Safety (FuSa) | Yes - Class B library support |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16F18326T-I/JQ Pin Configuration
| Pin 1 | VDD — Positive supply voltage |
| Pin 2 | RA5 — GPIO / analog input / PPS-remappable peripheral |
| Pin 3 | RA4 — GPIO / analog input / PPS-remappable peripheral |
| Pin 4 | RA3 — GPIO / MCLR (reset) per configuration |
| Pin 5 | RA2 — GPIO / analog input / PPS-remappable peripheral |
| Pin 6 | RA1 — GPIO / analog input / ICSPCLK |
| Pin 7 | RA0 — GPIO / analog input / ICSPDAT |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RC7 — GPIO / PPS-remappable peripheral |
| Pin 10 | RC6 — GPIO / PPS-remappable peripheral |
| Pin 11 | RC5 — GPIO / PPS-remappable peripheral |
| Pin 12 | RC4 — GPIO / PPS-remappable peripheral |
| Pin 13 | RC3 — GPIO / analog input / PPS-remappable peripheral |
| Pin 14 | RC2 — GPIO / analog input / PPS-remappable peripheral |
| Pin 15 | RC1 — GPIO / analog input / PPS-remappable peripheral |
| Pin 16 | RC0 — GPIO / analog input / PPS-remappable peripheral |
| Pin EP | EP — Exposed thermal pad - solder to ground pour |
Typical Applications
PIC16F18326T-I/JQ is suitable for 6 applications: Battery-Powered IoT Sensor Node, Home Appliance Control Board, LED Lighting Driver and Dimmer, HVAC Thermostat Controller, Small Motor Control (Fan, Pump, Valve), Portable Medical / Wellness Device.
Battery-Powered IoT Sensor Node
The PIC16F18326T-I/JQ suits IoT sensor nodes because its XLP nanoWatt sleep mode drops current to tens of nA with full RAM retention, while the 32 MHz core wakes quickly to process sensor data. The 10-bit ADC with 11 channels supports multiple analog sensors (temperature, light, battery voltage) on a single MCU. Its PPS remaps I2C/SPI/UART to any GPIO, simplifying PCB routing alongside a sub-GHz or BLE radio module. The 16-UQFN (4x4 mm) footprint fits inside coin-cell enclosures, and the 28 KB Flash is sufficient for sensor-fusion firmware plus a small protocol stack.
Recommended
Home Appliance Control Board
The PIC16F18326T-I/JQ targets home appliances thanks to its Functional Safety (FuSa) Class B library support, easing IEC 60730 / UL 1998 compliance for washing machines, dishwashers, and coffee makers. The Complementary Waveform Generator (CWG) and 10-bit PWM modules drive triac-based AC loads and brushed DC motors with dead-band control. Its 5-bit DAC and two comparators enable closed-loop sensor readout without external op-amps, lowering BOM cost. The wide 2.3V to 5.5V supply range supports both 3.3V logic and 5V relay driver rails on the same board.
Recommended
LED Lighting Driver and Dimmer
The PIC16F18326T-I/JQ fits LED lighting controllers because the 10-bit PWM with CWG delivers flicker-free dimming from 0 to 100% with hardware dead-time control. The 32 MHz execution allows DALI, 0-10V, or wireless dimming protocol stacks to run alongside PWM generation without CPU stall. Its 2.3V to 5.5V operating range supports both 3.3V digital logic and direct connection to rectified mains-derived rails after regulation. The compact 16-UQFN (4x4 mm) package fits inside bulb form factors and inline dimmer modules.
Recommended
HVAC Thermostat Controller
The PIC16F18326T-I/JQ is well-suited to HVAC thermostats because its 10-bit ADC digitizes multiple temperature sensors (NTC, analog outputs) and its Core Independent Peripherals (CLC, NCO) implement filter and timing logic in hardware, freeing the CPU for user interface and connectivity tasks. Sleep currents in the nanoAmpere range extend battery life on common-wire thermostats. The EUSART and I2C peripherals interface to Wi-Fi or BLE modules for remote control, while the 5-bit DAC supports analog setpoint output to legacy HVAC systems. The -40C to +85C industrial temperature range covers HVAC environments.
Recommended
Small Motor Control (Fan, Pump, Valve)
The PIC16F18326T-I/JQ handles small brushed DC and BLDC motor control thanks to the 10-bit PWM with Complementary Waveform Generator, which delivers programmable dead-time and fault input. The 32 MHz MIPS core executes closed-loop PID control within microseconds. Two on-chip comparators provide hardware overcurrent detection without external op-amps. The 28 KB Flash fits BLDC sensorless startup and commutation tables, while the 2 KB SRAM is sufficient for control-loop variables and telemetry buffers.
Recommended
Portable Medical / Wellness Device
The PIC16F18326T-I/JQ applies to portable medical and wellness devices because XLP low-power modes extend battery life on wearables measuring heart rate, SpO2, or activity. Its 10-bit ADC captures photodiode or bio-impedance signals with on-chip averaging, while the 5-bit DAC biases sensor excitation. PPS allows the same firmware to be reused across PCB revisions with different sensor pinouts. The exposed pad UQFN-16 package supports compact wearable form factors, and the wide VDD range accommodates Li-ion and coin-cell chemistries.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18326T-I/JQ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18325T-I/JQ | PIC16F18326T-E/JQ | PIC16F18325T-E/JQ | PIC16F18324T-I/JQ | PIC16F18323T-I/JQ |
|---|---|---|---|---|---|---|
| Package | 16-UQFN (4x4) | 16-UQFN (4x4) - same | 16-UQFN (4x4) - same | 16-UQFN (4x4) - same | 16-UQFN (4x4) - same | 16-UQFN (4x4) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 28 KB | 14 KB | 28 KB | 14 KB | 16 KB | 8 KB |
| SRAM | 2 KB | 1 KB | 2 KB | 1 KB | 1 KB | 512 B |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Automotive -40C to +125C | Automotive -40C to +125C | Industrial -40C to +85C | Industrial -40C to +85C |
| AEC-Q100 Qualified | No | No | Yes | Yes | No | No |
| PPS / CIP / XLP | Yes / Yes / Yes | Yes / Yes / Yes | Yes / Yes / Yes | Yes / Yes / Yes | Yes / Yes / Yes | Yes / Yes / Yes |
| Functional Safety (FuSa) | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Highest-density memory in the PIC16F183xx 16-UQFN family (vs PIC16F18325T-I/JQ)
- Industrial grade with same feature set as automotive equivalent (vs PIC16F18326T-E/JQ)
- Functional Safety (FuSa) library compatibility (vs PIC16F18323T-I/JQ)
Design Notes
The 16-UQFN package has an exposed thermal pad that MUST be soldered to a continuous ground pour on the top or bottom PCB layer. Use at least 4 thermal vias (0.3 mm drill, 0.2 mm annular ring) under the EP to stitch the ground planes. Place a 100 nF X7R decoupling capacitor within 2 mm of the VDD pin and a bulk 1 uF to 10 uF within 5 mm. Estimated: with 1 oz copper pour covering at least 50% of the EP area, theta_JA drops into the 35-45 C/W range, which is adequate for the 32 MHz XLP sleep-dominated duty cycles typical of battery-powered designs.
Estimated: at VDD = 5V, 32 MHz active, the PIC16F18326 draws ~3.5 mA typical. In sleep with WDT and RTC running, XLP mode drops current into the tens of nanoamps per the datasheet. For coin-cell designs, gate peripheral power aggressively: disable unused ADC, comparators, and FVR before sleep; use CLC + NCO for background timing to keep the CPU off. The PPS configuration words must be unlocked before any peripheral drives an I/O; otherwise the pin remains in reset state.
Do NOT leave MCLR floating - tie it to VDD through a 10 kohm resistor (or directly for noise-immune designs), or configure as RA3 via CONFIG3. Programming pins PGD/PGC (RA0/RA1) must be accessible for in-circuit serial programming (ICSP); route them to a 2x3 or 1x6 header. A common failure mode is forgetting the VCAP capacitor on the internal voltage regulator pin when migrating from 20+ pin parts - this device requires only VDD/VSS/EP, but routing the EP ground plane is critical.
Route PPS-mapped signals (SPI, I2C, UART) away from switching nodes and keep traces under 25 mm where possible. Use a guard trace tied to GND around the 32 kHz crystal (if used) to prevent coupling into adjacent ADC channels. The 10-bit ADC achieves ~1 LSB accuracy only when the analog supply is bypassed with a separate ferrite bead from VDD, and when digital I/O does not toggle within 100 ns of ADC sampling.
Compliance Information
RoHS compliant per Radwell part listing. Industrial grade - not AEC-Q100; choose PIC16F18326T-E/JQ for automotive. FuSa Class B library is supported per Microchip product page.
