PIC16LF18324T-I/ST - 8-Bit 32MHz 7KB Flash XLP MCU | Microchip
MPN: PIC16LF18324T-I/ST ✓ 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 |
PIC16LF18324T-I/ST Overview
An 8-bit microcontroller is a programmable integrated circuit whose ALU, registers, and data bus are eight bits wide; the PIC family from Microchip Technology uses a Harvard RISC core and is one of the most widely deployed MCU architectures in industrial, automotive, and consumer embedded systems. Low-power PIC16LF variants such as the PIC16LF18324 extend battery life through the proprietary eXtreme Low Power (XLP) technology with deep-sleep currents in the nanoamp range and active currents under 1 mA at 1 MHz.
Key features include 32 MHz internal oscillator operation from a wide 1.8V to 3.6V supply range, 12 I/O pins with Peripheral Pin Select (PPS) remapping, and core independent peripherals such as Configurable Logic Cells (CLC), Complementary Waveform Generator (CWG), and Numerically Controlled Oscillator (NCO). The TSSOP-14 footprint (4.40 mm body width) supports hand-solderable prototyping while remaining compatible with high-density surface-mount assembly. Operating temperature spans the industrial -40C to +85C (I) range.
The PIC16LF18324T-I/ST uses Microchip's enhanced mid-range 16-bit instruction set with 14-bit program word width, providing deterministic interrupt response and a single-cycle hardware multiplier. Peripheral Pin Select allows digital peripheral I/O mapping to any of the available I/O pins, simplifying PCB layout and enabling drop-in reuse across PIC16LF183xx family variants.
Typical applications include IoT sensor nodes, battery-powered remote controls, low-power wireless peripherals, smart thermostats, and portable medical devices. Designers select this part when the application demands tight power budgets, on-chip configurable logic, and rich analog integration in a small TSSOP-14 footprint.
When designing with this MCU, route analog and digital ground planes separately and tie them at a single point near the MCU's GND pin; ensure decoupling capacitor traces are short and wide to maintain ADC accuracy at high clock rates.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC16LF18324T-I/ST — 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 PIC16LF18324T-I/ST (same form factor and footprint) — differing in ADC, Package, Program Memory (Flash), Operating Temperature, Data SRAM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF18323T-I/ST
✅ Drop-In✓ In Stock
$0.52 / Unit
View Datasheet →PIC16LF18324-I/P
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16F18324T-I/ST
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1825T-I/SL
✅ Drop-In✓ In Stock
$1.58 / Unit
View Datasheet →PIC16LF1824T39AT-I/ST
✅ Drop-In✓ In Stock
$1.49 / Unit
View Datasheet →ATTINY441-MMH
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF18324T-I/ST Maximum Ratings & Electrical Characteristics
| Core | PIC 8-bit enhanced mid-range |
| Program Memory (Flash) | 7 KB (4K x 14) |
| Data RAM | 512 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage Range | 1.8 V to 3.6 V |
| ADC | 10-bit |
| DAC | 5-bit |
| PWM Channels | 10-bit |
| CCP Modules | Yes |
| CLC (Configurable Logic Cells) | Yes |
| NCO (Numerically Controlled Oscillator) | Yes |
| CWG (Complementary Waveform Generator) | Yes |
| PPS (Peripheral Pin Select) | Yes |
| Communication | EUSART, SPI, I2C |
| I/O Pins | 12 |
| Operating Temperature | -40C to +85C |
| Package | 14-pin TSSOP (ST) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16LF18324T-I/ST Pin Configuration
| Pin 1 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| Pin 2 | RA5 — Digital I/O / MCLR (reset) input |
| Pin 3 | RA4 — Digital I/O with weak pull-up |
| Pin 4 | RA3 — Digital I/O / MCLR (alternate) |
| Pin 5 | RC5 — Digital I/O / PPS remappable |
| Pin 6 | RC4 — Digital I/O / PPS remappable |
| Pin 7 | RC3 — Digital I/O / PPS remappable |
| Pin 8 | RC2 — Digital I/O / PPS remappable |
| Pin 9 | RC1 — Digital I/O / SCL (I2C) |
| Pin 10 | RC0 — Digital I/O / SDA (I2C) |
| Pin 11 | RA2 — Digital I/O / analog input |
| Pin 12 | RA1 — Digital I/O / analog input |
| Pin 13 | RA0 — Digital I/O / analog input |
| Pin 14 | VSS — Ground reference |
Typical Applications
PIC16LF18324T-I/ST is suitable for 7 applications: Battery-Powered IoT Sensor Nodes, Wireless Remote Controls (Sub-GHz / 433 MHz / 315 MHz), Smart Thermostats and HVAC Controls, Portable Medical Monitoring Devices, Industrial Sensor and Process Monitors, LED Lighting and Driver Controllers, Consumer Electronics User Interface Controllers.
Battery-Powered IoT Sensor Nodes
The PIC16LF18324T-I/ST is well suited to IoT sensor nodes where battery life is critical. Its XLP technology delivers sleep currents in the tens of nanoamperes, allowing years of operation from a coin cell. The 10-bit ADC, comparators, and configurable logic cells (CLC) handle sensor conditioning without external components. With 7 KB Flash present, firmware can implement BLE beaconing intervals, sensor fusion, and adaptive sleep. PPS allows flexible PCB layout for compact sensor modules.
Recommended
Wireless Remote Controls (Sub-GHz / 433 MHz / 315 MHz)
The PIC16LF18324T-I/ST drives sub-GHz remote controls efficiently when paired with an RF transmitter such as the PIC16LF1824T39AT-I/ST or MICRF114. Its PWM and CWG peripherals can generate FSK/ASK modulation without software overhead. With 32 MHz operation present, the MCU handles secure rolling-code algorithms and button scanning in the same firmware. The TSSOP-14 footprint suits slim handheld enclosures with minimal PCB area.
Recommended
Smart Thermostats and HVAC Controls
The PIC16LF18324T-I/ST powers smart thermostats and HVAC controls by reading temperature, humidity, and occupancy sensors through its 10-bit ADC. The on-chip DAC drives triac phase control for relays. CLC and NCO provide zero-cross detection without external comparators. With 7 KB Flash present, firmware handles PID control loops, scheduling, and low-power LCD drive sequences. Operating temperature range of -40C to +85C supports plenum installations.
Recommended
Portable Medical Monitoring Devices
The PIC16LF18324T-I/ST fits portable medical devices such as pulse oximeters, glucometers, and pill reminders. Its XLP technology with nanoamp sleep currents allows months of standby operation from a coin cell. The ADC and DAC handle bio-signal conditioning, while the SPI/I2C interfaces connect to BLE modules or EEPROM for data logging. With 256 bytes EEPROM present, patient identifiers and calibration data persist across power cycles.
Recommended
Industrial Sensor and Process Monitors
The PIC16LF18324T-I/ST operates in industrial sensor and process monitor modules where 4-20 mA loop-powered or 24 V bus-powered designs are common. Its 1.8 V to 3.6 V operation handles battery and regulated supplies. The EUSART interfaces to RS-485 transceivers such as the MCP2551, while the 10-bit ADC reads 4-20 mA current loop receivers. CLC handles Manchester encoding without CPU load for HART-like protocols.
Recommended
LED Lighting and Driver Controllers
The PIC16LF18324T-I/ST drives LED lighting controllers with smooth dimming and color mixing. Its 10-bit PWM and CWG generate high-resolution dimming signals while the 10-bit ADC monitors LED current feedback. With 32 MHz operation present, the MCU executes DMX-512 reception or DALI protocol stacks in firmware. The TSSOP-14 footprint fits compact driver PCBs alongside MOSFET half-bridges.
Recommended
Consumer Electronics User Interface Controllers
The PIC16LF18324T-I/ST powers consumer user-interface controllers such as touch buttons, capacitive sliders, and rotary encoder inputs in appliances. The CLC and NCO peripherals debounce inputs and generate chirp tones without CPU intervention. With Peripheral Pin Select present, the same PCB layout supports multiple UI configurations via firmware alone. Low BOM cost and eXtreme Low Power technology suit battery-backed devices.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18324T-I/ST — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF18323T-I/ST | PIC16LF18324-I/P | PIC16F18324T-I/ST | PIC16LF1825T-I/SL |
|---|---|---|---|---|---|
| Package | 14-pin TSSOP (ST) | 14-pin TSSOP - same | 14-pin PDIP - different but compatible | 14-pin TSSOP - same | 14-pin SOIC - close |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 7 KB | 3.5 KB | 7 KB | 7 KB | 8 KB |
| RAM | 512 B | 256 B | 512 B | 512 B | 1 KB |
| EEPROM | 256 B | 128 B | 256 B | 256 B | 256 B |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| XLP Sleep Current | nA range | nA range | nA range | nA range | higher than LF18xx |
| I/O Pins | 12 | 12 | 12 | 12 | 12 |
| PPS (Peripheral Pin Select) | Yes | Yes | Yes | Yes | Yes |
| Approximate Unit Price (qty 100) | $1.14 | $1.05 (est.) | $1.30 (est.) | $1.18 (est.) | $1.10 (est.) |
Key Differentiators
- Lowest operating voltage in PIC16LF18xx family (vs PIC16F18324T-I/ST)
- Highest memory density in TSSOP-14 footprint (vs PIC16LF18323T-I/ST)
- Nanoamp XLP sleep current vs older PIC16LF182x (vs PIC16LF1825T-I/SL)
- Integrated CLC, NCO, and CWG peripherals (vs ATTINY441-MMH)
Design Notes
Estimated: at 3.3 V VDD, 32 MHz operation, the PIC16LF18324 draws approximately 5 mA active. Use the IDLE and DOZE modes to reduce active current to about 1 mA, and switch to Sleep with peripherals running for sub-100 uA standby. For coin-cell applications, the datasheet recommends Power-Saving Sleep Mode (PMD bits set), which preserves RAM and enables wake-up from IOC interrupts.
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 1) with a wide ground trace. For ADC accuracy at high clock speeds, use a 10 uF bulk capacitor on VDD and a separate analog supply trace (AVDD) when the ADC is active. Avoid routing digital signals under the analog input pins (RA0-RA2) to minimize coupling.
Use Peripheral Pin Select (PPS) to remap digital peripherals to any of the 12 I/O pins, simplifying PCB routing when module layouts change. The TSSOP-14 footprint exposes GND on pin 14, so connect the ground plane directly under the package. The MCLR pin (RA5 or RA3) requires a 10 kohm pull-up to VDD if reset is needed; omit the pull-up only when the internal MCLR is enabled via configuration bits.
Configuration bits must be set correctly for the oscillator source and watchdog timer. A common pitfall is leaving the WDT enabled unintentionally, which forces a reset every few seconds. Another pitfall is enabling analog inputs without configuring the ANSEL register, which blocks digital reads. Always read-modify-write the PORT and LAT registers separately, not combined, to avoid read-modify-write hazards.
For EUSART, SPI, or I2C signals routed off-board, add 4.7 kohm pull-ups on I2C lines (RC0/RC1) to ensure clean edges. Use series resistors (22-33 ohm) on SPI clock and data lines to dampen reflections when the bus length exceeds 50 mm. Configure PPS output mapping for the active peripheral before enabling the peripheral to avoid glitches on the I/O pins.
Compliance Information
RoHS and REACH compliant per Microchip product environmental documentation. Standard grade; AEC-Q100 qualified versions (PIC16F18324 automotive grade) are available in different packages per Microchip product selector.
