PIC16LF18324-I/JQ - 8-bit 32MHz XLP MCU, 7KB Flash UQFN-16 | Microchip
MPN: PIC16LF18324-I/JQ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.82 | $0.82 |
| 10 | $0.74 | $7.40 |
| 100 | $0.62 | $62.00 |
| 500 | $0.55 | $275.00 |
| 1,000 | $0.48 | $480.00 |
| 3,000 | $0.42 | $1,260.00 |
PIC16LF18324-I/JQ Overview
A microcontroller (MCU) is a single-chip computer integrating a CPU core, non-volatile program memory, working RAM, and a set of on-die peripherals. The 8-bit PIC16 architecture sits in the broader taxonomy of microcontrollers -> embedded processors -> semiconductors; XLP (eXtreme Low Power) is Microchip's branding for ultra-low-power MCU families engineered for sleep currents typically in the nanoampere range.
Key features include a 32 MHz internal oscillator, 12 I/O pins with Peripheral Pin Select (PPS) remapping, 10-bit ADC with computation, 2 comparators, 2 PWM modules, 9 timers, 2 EUSART, 1 I²C and 1 SPI, plus a Windowed Watchdog Timer. Operating voltage spans 1.8 V to 3.6 V, suiting battery and energy-harvesting systems.
Built on a CMOS process with nanoWatt XLP technology, the device delivers typical sleep currents below 100 nA (per datasheet) and active-mode figures in the microamp range at low clock rates. The PPS feature allows peripheral signals to be reassigned to a wide range of I/O pins, simplifying PCB routing and BOM reuse across variants.
Typical applications include IoT sensor nodes, wearable health devices, low-power wireless remotes, battery-backed instrumentation, and consumer HMI controls where small footprint and ultra-low standby current are decisive selection factors.
This page synthesizes verified distributor stock, parametric drop-in alternatives, and practical design notes for the PIC16LF18324-I/JQ, including guidance that is not present in the bare manufacturer datasheet.
Drop-in alternatives for PIC16LF18324-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 PIC16LF18324-I/JQ (same form factor and footprint) — differing in Operating Temperature, Program Memory (Flash), Data SRAM, Package, Data EEPROM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF18323-I/JQ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.05 / Unit
View Datasheet →PIC16LF18324T-I/JQ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16LF1824T-I/JQ
✅ Drop-In✓ In Stock
$0.68 / Unit
View Datasheet →PIC16LF1823-I/JQ
✅ Drop-In✓ In Stock
$0.95 / Unit
View Datasheet →PIC16LF1574-I/JQ
✅ Drop-In✓ In Stock
$0.94 / Unit
View Datasheet →PIC16LF18324-I/JQ Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC16 |
| Program Memory (Flash) | 7 KB (4K × 14 words) |
| Data SRAM | 512 B |
| Data EEPROM | 256 B |
| Maximum CPU Clock | 32 MHz |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 12 |
| ADC | 10-bit with computation |
| Comparators | 2 |
| PWM Channels | 2 |
| Timers | 9 |
| EUSART | 2 |
| I²C | 1 |
| SPI | 1 |
| Package | 16-UQFN (4 × 4 mm) with exposed pad |
| Operating Temperature | -40 °C to +85 °C (Industrial: "I") |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| MSL Level | MSL1 / MSL3 |
PIC16LF18324-I/JQ Pin Configuration
| Pin 1 | RA0 — Bidirectional I/O with PPS, analog input |
| Pin 2 | RA1 — Bidirectional I/O with PPS, analog input |
| Pin 3 | RA2 — Bidirectional I/O with PPS, analog input |
| Pin 4 | RA3 — Bidirectional I/O with PPS, analog input, MCLR |
| Pin 5 | RA4 — Bidirectional I/O with PPS, analog input |
| Pin 6 | RA5 — Bidirectional I/O with PPS, analog input |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA6 — Bidirectional I/O with PPS |
| Pin 9 | RA7 — Bidirectional I/O with PPS |
| Pin 10 | RB0 — Bidirectional I/O with PPS, analog input |
| Pin 11 | RB1 — Bidirectional I/O with PPS, analog input |
| Pin 12 | RB2 — Bidirectional I/O with PPS, analog input |
| Pin 13 | RB3 — Bidirectional I/O with PPS, analog input |
| Pin 14 | RB4 — Bidirectional I/O with PPS, analog input |
| Pin 15 | RB5 — Bidirectional I/O with PPS, analog input |
| Pin 16 | VDD — Positive supply (1.8 V to 3.6 V) |
Typical Applications
PIC16LF18324-I/JQ is suitable for 6 applications: IoT Wireless Sensor Node, Wearable Health Monitor, Battery-Backed Instrumentation, Low-Power Wireless Remote Control, Consumer HMI Control, Automotive Body Electronics (Sub-System).
IoT Wireless Sensor Node
The PIC16LF18324-I/JQ fits battery-powered IoT sensor nodes thanks to its nanoWatt XLP sleep current below 100 nA (per Microchip XLP family data) and 32 MHz active performance. Its 10-bit ADC² with averaging and oversampling reduces firmware filtering load for analog sensors like temperature, humidity, or gas detectors. The 12 GPIO pins via Peripheral Pin Select let designers route SPI to a sub-GHz radio and I²C to a sensor without PCB rework. At 7 KB Flash and 256 B EEPROM the part supports BLE/Zigbee-ready stacks plus persistent configuration storage across battery swap events.
Recommended
Wearable Health Monitor
Wearables demand coin-cell operation and small footprint, both delivered by the PIC16LF18324-I/JQ. The 1.8 V to 3.6 V operating range supports direct connection to a CR2032 cell with no boost converter. The 16-UQFN 4 × 4 mm package fits wristband PCBs, while 9 timers provide fine-grained PWM for haptic feedback and EUSART for BLE module handshaking. XLP sleep currents below 100 nA extend battery life into multi-month territory for always-on wearables. Designers can use ADC² to oversample heart-rate or SpO2 photodiode signals, reducing external analog components.
Recommended
Battery-Backed Instrumentation
Industrial and medical instruments that retain settings during power loss benefit from the PIC16LF18324-I/JQ's 256 B EEPROM. The 10-bit ADC² provides calibrated voltage, current, and temperature sensing with hardware averaging, simplifying firmware. PPS allows flexible routing of UART debug lines away from analog inputs to reduce crosstalk. Operating temperature from -40 °C to +85 °C suits factory-floor and outdoor enclosures. Designers typically pair this MCU with a serial EEPROM or FRAM if non-volatile log storage exceeds 256 B, but the on-chip EEPROM covers most user-calibration and unit-ID storage needs.
Recommended
Low-Power Wireless Remote Control
Remote controls are duty-cycled devices that spend 99% of their life in deep sleep, making the PIC16LF18324-I/JQ ideal. The internal 32 MHz HFINTOSC eliminates a crystal, reducing BOM cost for handheld transmitters. Two PWM channels can drive IR LEDs with carrier modulation, while the comparator triggers wake-up on capacitive-touch events via the dedicated touch hardware. With nanoWatt XLP sleep currents below 100 nA, an alkaline-powered remote can run years on a single pair of AAA cells. The 12 I/O pins are ample for keypads up to 4 × 4 via charlieplexing.
Recommended
Consumer HMI Control
Small home appliances and consumer devices with segment-LCD or LED-7-segment HMIs leverage the PIC16LF18324-I/JQ's PWM, EUSART, and ADC² resources. The 32 MHz CPU executes lighting patterns and motor-control loops with deterministic timing, and PPS reassigns SPI to either an EEPROM or a display driver without board respins. Operating voltage down to 1.8 V supports direct lithium-ion battery monitoring. The 256 B EEPROM stores user preferences across power cycles, while the 10-bit ADC reads potentiometers, photodiodes, or thermistors with hardware averaging for stable readings.
Recommended
Automotive Body Electronics (Sub-System)
Body-electronics sub-modules that don't require full automotive grade can use the PIC16LF18324-I/JQ on 12 V rails stepped down to 3.3 V. The 32 MHz performance handles LIN slave stacks and LED matrix animations. With 9 timers, multiple PWM channels drive LED drivers and motor pre-drivers without external timer ICs. PPS simplifies routing between UART, SPI, and PWM outputs, reducing PCB layer count. For modules that do require AEC-Q100, designers migrate to PIC16F18324-E/JQ (extended temp) on the same footprint. Operating temperature -40 °C to +85 °C covers cabin and most under-bonnet sub-modules when derated.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18324-I/JQ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF18323-I/JQ | PIC16LF18324T-I/JQ | PIC16LF1824T-I/JQ | PIC16LF1823-I/JQ | PIC16LF1574-I/JQ |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 16-UQFN (4x4) | 16-UQFN (4x4) - same | 16-UQFN (4x4) - same | 16-UQFN (4x4) - same | 16-UQFN (4x4) - same | 16-UQFN (4x4) - same |
| Flash Memory | 7 KB | 3.5 KB (-50%) | 7 KB (same) | 7 KB (same) | 8 KB (+14%) | 7 KB (same) |
| Data SRAM | 512 B | 512 B (same) | 512 B (same) | 256 B (-50%) | 256 B (-50%) | 256 B (-50%) |
| EEPROM | 256 B | 256 B (same) | 256 B (same) | 256 B (same) | 256 B (same) | 256 B (same) |
| Max CPU Clock | 32 MHz | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) |
| I/O Count | 12 | 12 (same) | 12 (same) | 12 (same) | 12 (same) | 12 (same) |
| ADC | 10-bit with computation | 10-bit with computation (same) | 10-bit with computation (same) | 10-bit (no ADC²) | 10-bit (no ADC²) | 10-bit (no ADC²) |
Key Differentiators
- Highest Flash density in 16-UQFN XLP family at 7 KB (vs PIC16LF18323-I/JQ)
- ADC² with hardware averaging for sensor signal chains (vs PIC16LF1824T-I/JQ)
- Modern PPS with full peripheral remapping (vs PIC16LF1574-I/JQ)
Design Notes
Estimated: at VDD = 3.3 V and CPU = 32 MHz (active), the typical active current is approximately 3 mA per Microchip XLP family datasheet characteristics; at deep sleep it falls below 100 nA. Designers targeting multi-year coin-cell life must minimize active-mode duty cycle, gate unused peripherals with PMD bits, and select the lowest LFINTOSC frequency that meets response-time requirements. Always place a 0.1 µF ceramic bypass capacitor within 5 mm of the VDD pin and a 10 µF bulk capacitor at the regulator output to suppress voltage spikes during transmit bursts.
The 16-UQFN (4 × 4 mm) package has an exposed thermal pad that MUST be soldered to a 1 × 1 mm (minimum) copper island on the top layer, stitched with at least 4 thermal vias (0.3 mm drill) to the bottom ground plane. Without proper pad soldering, mechanical reliability under thermal cycling is significantly reduced, and ground-bond inductance degrades ADC accuracy. Keep digital traces away from analog ADC inputs by at least 2 mm or guard them with a ground trace to reduce capacitive coupling.
Use the PPS feature to assign high-frequency peripherals (SPI, EUSART clocks) to adjacent pin pairs to shorten trace lengths. Place the 32.768 kHz crystal (if used) within 5 mm of the SOSCO/SOSCI pins and guard it with a grounded ring. The MCLR pin requires a 10 kΩ pull-up to VDD and a 100 nF capacitor to ground for in-circuit serial programming (ICSP); routing these too far can cause programming failures in production.
Do not exceed VDD = 3.6 V absolute maximum or the on-chip EEPROM endurance specification (typically 100k write cycles per byte) may degrade. Do not enable ADC² without first enabling the FVR (Fixed Voltage Reference) module or the ADC reference will float. Avoid driving high-current loads (>10 mA) directly from GPIO pins; use a MOSFET driver or buffer. PPS lock bits must be cleared before reprogramming peripherals, otherwise PPS remapping silently fails.
Compliance Information
RoHS and REACH compliance per Microchip product page; industrial temperature -40 °C to +85 °C. Not AEC-Q100 qualified - choose PIC16F18324-E/JQ for automotive-grade drop-in.
