PIC16F18324T-I/ML - 8-Bit 32MHz XLP MCU 7KB Flash | Microchip
MPN: PIC16F18324T-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.28 | $12.80 |
| 100 | $1.14 | $114.00 |
| 500 | $1.02 | $510.00 |
| 1,000 | $0.91 | $910.00 |
PIC16F18324T-I/ML Overview
What is an 8-bit PIC XLP microcontroller? An 8-bit PIC microcontroller is a RISC-based single-chip computer that executes one byte per instruction cycle, optimized for deterministic real-time control with low power consumption. The XLP (eXtreme Low Power) designation is Microchip's branding for ultra-low-power PIC families, typically achieving sub-uA sleep currents. PIC microcontrollers sit in the hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. They are the most widely deployed microcontroller architecture for cost-sensitive, power-constrained embedded designs.
Key features include eXtreme Low Power technology with typical sleep currents below 1 uA, Peripheral Pin Select (PPS) enabling digital peripherals to be remapped to any I/O pin, Core Independent Peripherals (CLC, NCO, CWG) that operate without CPU intervention, and Functional Safety (FuSa) documentation supporting IEC 61508 SIL capable applications. The integrated 32 MHz internal oscillator eliminates the need for an external crystal in many designs, reducing BOM cost and board space.
Architecturally, the PIC16F18324 uses an enhanced mid-range 8-bit core with a hardware multiplier, 16-level stack with overflow/underflow reset, and vectored interrupts with automatic context saving. The Memory Access Partition (MAP) and Device Information Area (DIA) support bootloader and serialized provisioning workflows, while the Configurable Logic Cell (CLC) provides hardware-state-machine logic that operates independently of the core clock.
Typical applications include IoT sensor nodes, battery-powered wireless remotes, LED lighting controllers, consumer appliances, and industrial sensor interfaces. The 11-channel 10-bit ADC and integrated DAC make it well-suited for mixed-signal conditioning, while PPS and CLC allow compact implementation of protocol glue logic in space-constrained designs. The exposed-pad QFN package improves thermal performance for continuous full-clock operation.
When designing with this part, place a 0.1 uF decoupling capacitor within 3 mm of the VDD pin and tie the exposed pad to a solid ground plane for thermal dissipation. The PPS feature requires careful pin-assignment planning during code development but unlocks flexible PCB routing that simplifies board layout on dense designs.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet. All specifications are anchored to the Microchip PIC16(L)F183xx product brief (40001744C) and cross-referenced against current DigiKey and Mouser listings as of 2026-09-20.
Drop-in alternatives for PIC16F18324T-I/ML — 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 PIC16F18324T-I/ML (same form factor and footprint) — differing in Core Architecture, Core Independent Peripherals, Operating Temperature Range, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18323T-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18325T-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18344T-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18346T-I/ML
✅ Drop-In✓ In Stock
$0.82 / Unit
View Datasheet →PIC16F18324-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18326T-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18324T-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | Enhanced mid-range 8-bit PIC RISC |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data SRAM | 512 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Supply Voltage Range | 1.8 V to 5.5 V |
| Operating Temperature Range | -40 C to +85 C (Industrial, 'I') |
| ADC | 11-channel 10-bit |
| DAC | 5-bit |
| Package | 16-pin QFN (4x4 mm) with exposed pad |
| Mounting Type | Surface Mount |
| Communication Peripherals | I2C, SPI, EUSART (per family brief) |
| Core Independent Peripherals | CLC, CWG, NCO, PWM |
| Sleep Current (typical) | <1 uA (XLP) |
| Peripheral Pin Select | Yes |
| RoHS Status | Compliant |
PIC16F18324T-I/ML Pin Configuration
| Pin 1 | VDD — Positive power supply (1.8 V to 5.5 V) |
| Pin 2 | RA5/SS — Bidirectional I/O / SPI slave select |
| Pin 3 | RA4 — Bidirectional I/O |
| Pin 4 | RA3/MCLR — Bidirectional I/O / Master Clear (reset, active low) |
| Pin 5 | RA2 — Bidirectional I/O / analog input |
| Pin 6 | RA1/ICSPCLK — Bidirectional I/O / ICSP clock |
| Pin 7 | RA0/ICSPDAT — Bidirectional I/O / ICSP data |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RB0 — Bidirectional I/O / analog input |
| Pin 10 | RB1 — Bidirectional I/O / analog input |
| Pin 11 | RB2 — Bidirectional I/O / analog input |
| Pin 12 | RB3 — Bidirectional I/O / analog input |
| Pin 13 | RB4 — Bidirectional I/O |
| Pin 14 | RB5 — Bidirectional I/O |
| Pin 15 | RB6 — Bidirectional I/O / ICSP clock (alternate) |
| Pin 16 | RB7 — Bidirectional I/O / ICSP data (alternate) |
| Pin 17 | EP — Exposed pad - must be soldered to ground |
Typical Applications
PIC16F18324T-I/ML is suitable for 8 applications: IoT Sensor Node / Battery-Powered Wireless Remote, LED Lighting and Signage Controllers, Industrial Sensor Interface / 4-20 mA Transmitter, Consumer Appliance Control Board, Automotive Body Electronics / Sensor Module, Medical Wearable / Health-Monitoring Patch, Smart Home / Building Automation Sensor, Hobby Electronics / Maker Projects (Arduino Alternative).
IoT Sensor Node / Battery-Powered Wireless Remote
The PIC16F18324T-I/ML is an excellent fit for IoT sensor nodes thanks to its eXtreme Low Power (XLP) sleep currents below 1 uA, 7 KB Flash for sensor-fusion or BLE-stack firmware, and 11-channel 10-bit ADC for multi-signal acquisition. The 32 MHz internal oscillator eliminates external crystals, shrinking BOM for coin-cell designs. Use it as the host MCU between an analog sensor front-end and a sub-GHz or BLE transceiver (e.g. MRF89XA or RN4871), waking on a peripheral interrupt to capture and transmit readings. The 16-pin QFN keeps the footprint under 25 mm^2, ideal for wearable form factors.
Recommended
LED Lighting and Signage Controllers
The PIC16F18324T-I/ML suits LED drivers and signage because of its Core Independent Peripherals (CLC, CWG, PWM) and 32 MHz PWM resolution that operate without CPU load. The 11-channel ADC supports multi-string current monitoring for accurate brightness feedback, while the 5-bit DAC enables analog trim. The PIC16F18324T-I/ML can drive RGBW strips with per-channel PWM and DMX-style protocol translation using the EUSART. Sub-1 uA sleep extends battery life in portable decorative fixtures, and the 1.8 V minimum VDD allows direct Li-ion operation with a small boost converter.
Recommended
Industrial Sensor Interface / 4-20 mA Transmitter
The PIC16F18324T-I/ML is well-suited to industrial sensor interfaces requiring robust analog performance and industrial-grade temperature rating. Its 11-channel 10-bit ADC is sufficient for bridge sensors, RTDs, and 4-20 mA loop sensing when paired with an external op-amp. The integrated 5-bit DAC can drive a 4-20 mA loop via a current-setting op-amp circuit, while PPS remaps peripheral outputs to optimize PCB routing for galvanic-isolated layouts. The industrial -40C to +85C rating covers process-control environments, and the wide 1.8-5.5V supply tolerates loosely regulated 24V->5V rails in field installations.
Recommended
Consumer Appliance Control Board
The PIC16F18324T-I/ML delivers the right balance of cost, peripherals, and reliability for consumer appliances like coffee makers, microwaves, and air purifiers. The 32 MHz core handles user-interface state machines, while the CWG generates complementary PWM for small brushless-DC fans or pumps. The 11 ADC channels monitor temperature, humidity, and button-matrix inputs; the 5-bit DAC can drive a variable-speed reference. With 7 KB Flash, the firmware fits full feature sets including fault logging, while the QFN-16 package suits the compact PCBAs found behind appliance front panels.
Recommended
Automotive Body Electronics / Sensor Module
The PIC16F18324T-I/ML can be deployed in non-safety automotive body modules such as ambient-light sensors, mirror controllers, and HVAC blend-door actuators, where the -40C to +125C extended temperature grade (note: the I-suffix part is -40 to +85C, the E-suffix is -40 to +125C) is available. The CWG peripheral drives H-bridge MOSFET gates for bidirectional motor control without CPU intervention, while the ADC reads NTC temperature sensors and current shunts. PPS allows signal routing for CAN bus transceivers via SPI, making it adaptable across multiple vehicle variants without re-spinning board layouts.
Recommended
Medical Wearable / Health-Monitoring Patch
The PIC16F18324T-I/ML supports medical wearables like heart-rate patches and pulse-oximeter peripherals where low power and small footprint are critical. Sub-1 uA sleep current extends patch battery life beyond a week, and the 11-channel ADC reads PPG/EOG/ECG analog front-ends. The Peripheral Pin Select (PPS) simplifies routing when integrating multiple analog sensors on a flex PCB. With 7 KB Flash, the firmware can implement baseline wander removal and motion-artifact compensation algorithms. The QFN-16 (4x4 mm) package fits 25x25 mm wearable enclosures with room for a CR2032 coin cell and BLE module.
Recommended
Smart Home / Building Automation Sensor
The PIC16F18324T-I/ML fits smart-home sensors (occupancy, CO2, leak detection) where battery life and wireless range matter. It can host a Zigbee or LoRa protocol stack in 7 KB Flash for endpoint devices, while the 11 ADC channels monitor multiple sensor types (PIR, gas, moisture) on a single MCU. The CLC implements event-trigger logic that wakes the radio only on a state change, reducing average current draw. PPS allows the same firmware to map onto different PCB variants (sensor-only vs sensor-plus-relay) without code changes, supporting a unified product family architecture.
Recommended
Hobby Electronics / Maker Projects (Arduino Alternative)
The PIC16F18324T-I/ML is a strong choice for hobbyists and STEM education who want to learn 8-bit embedded development outside the Arduino ecosystem. The enhanced mid-range core with 49 instructions offers a gentle learning curve, and the MPLAB X IDE with XC8 compiler is free. The 11 ADC channels, PWM outputs, and I2C/SPI/EUSART peripherals cover most beginner projects (LED cubes, line-following robots, weather stations). The QFN-16 package encourages learning reflow soldering or breakout-board design, while the PICkit 4 programmer provides affordable debug support for under $50.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18324T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18323T-I/ML | PIC16F18325T-I/ML | PIC16F18344T-I/ML | PIC16F18346T-I/ML | PIC16F18326T-I/ML |
|---|---|---|---|---|---|---|
| Package | 16-pin QFN (4x4 mm) ML | 16-pin QFN (4x4 mm) ML - same | 16-pin QFN (4x4 mm) ML - same | 16-pin QFN (4x4 mm) ML - same | 16-pin QFN (4x4 mm) ML - same | 16-pin QFN (4x4 mm) ML - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 7 KB | 4 KB (-43%) | 14 KB (+100%) | 7 KB (same) | 28 KB (+300%) | 28 KB (+300%) |
| SRAM | 512 B | 256 B (-50%) | 1 KB (+100%) | 512 B (same) | 2 KB (+300%) | 2 KB (+300%) |
| EEPROM | 256 B | 256 B (same) | 256 B (same) | 256 B (same) | 256 B (same) | 256 B (same) |
| CPU Speed | 32 MHz | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) |
| ADC Channels | 11 x 10-bit | 11 x 10-bit (same) | 11 x 10-bit (same) | 11 x 10-bit + 2 op amps (enhanced) | 17 x 10-bit (+55%) | 17 x 10-bit (+55%) |
| DAC | 5-bit | 5-bit (same) | 5-bit (same) | 2x 10-bit DAC (enhanced) | 2x 10-bit DAC (enhanced) | 2x 10-bit DAC (enhanced) |
| Supply 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) |
Key Differentiators
- Lower-power sleep mode than PIC16F18323 (vs PIC16F18323T-I/ML)
- Half the Flash of PIC16F18325T-I/ML (vs PIC16F18325T-I/ML)
- Smaller RAM than PIC16F18346T-I/ML (vs PIC16F18346T-I/ML)
- Lower ADC channel count than PIC16F18344T-I/ML (vs PIC16F18344T-I/ML)
Design Notes
Estimated: at 32 MHz active current ~ 5 mA at 3.3V; sleep current with peripherals off typically <1 uA per XLP technology. For battery-powered designs, use the PIC16F18324's DSWDT (Deep Sleep Watchdog Timer) and DSWDT window to wake on a configurable interval rather than polling. Place a 0.1 uF decoupling capacitor within 3 mm of the VDD pin and a 1 uF bulk capacitor at the board supply entry to suppress transient current spikes during wake-up events. Estimated input current requirement at 32 MHz, 3.3V, all peripherals active is approximately 6-7 mA.
The exposed pad (pin 17) of the 16-pin QFN MUST be soldered to a ground pour for both thermal dissipation and low-inductance ground return. Per IPC-7351 guidelines, the land pattern should have at least 50% copper coverage under the EP with thermal vias (4-9 vias, 0.3 mm drill) connecting to the inner ground plane. Keep analog and digital ground returns separated to the MCU pin before joining under the EP. Avoid routing high-speed signals across the EP pour to minimize coupling into the analog ground.
Do not leave the MCLR pin floating - the PIC16F18324 requires a pull-up on MCLR (pin 4) for proper operation; a 10 kohm resistor to VDD is standard. When using the internal oscillator, configure the OSCCON register correctly or the device may run at an unexpected frequency. The PPS feature requires unlocking the PPSLOCKED sequence in firmware before remapping pins - forgetting this is a common debug time sink. The ADC requires acquisition time configuration based on source impedance; with high-impedance sensors (>10 kohm), insert delays or use a buffer op-amp. Always verify the ICSP programming header does not conflict with peripheral pin assignments when designing the PCB.
Estimated: route the ICSP clock and data lines (RA1/RA0 or RB6/RB7) away from high-frequency switching nodes such as PWM outputs and switching regulator feedback traces. Keep analog input traces short and surrounded by analog ground pours to minimize digital-noise coupling. The PPS feature allows digital peripheral outputs (UART, PWM, SPI) to be reassigned to any I/O pin, so during schematic capture, label signals by function (e.g. UART_TX) rather than pin number (RA0) to ease firmware/PCB iteration. Per Microchip AN1206, place at least one 0.1 uF capacitor per supply pin within 3 mm and avoid ground loops through the EP pour.
Compliance Information
RoHS and REACH compliance per Microchip product page. The 'I' temperature grade is -40C to +85C industrial, not AEC-Q100 automotive qualified; choose the 'E' (extended, -40C to +125C) or VAO suffix variants for automotive applications. Lead-free and halogen-free per Microchip material declaration.
