PIC16LF18323-I/SL - 8-Bit 32MHz MCU, 3.5KB Flash, XLP | Microchip
MPN: PIC16LF18323-I/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.28 | $12.80 |
| 100 | $1.12 | $112.00 |
| 500 | $0.98 | $490.00 |
| 1,000 | $0.86 | $860.00 |
| 3,000 | $0.74 | $2,220.00 |
PIC16LF18323-I/SL Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile data memory (RAM), EEPROM for parameter storage, and a rich set of peripherals on one die. The PIC16F family uses a RISC-based 8-bit core optimised for deterministic instruction execution and low interrupt latency, making PIC MCUs a dominant solution in battery-powered consumer products, sensor front-ends, and automotive body controllers. Within the broader taxonomy, an MCU belongs to: microcontroller → embedded processor → semiconductor IC.
Key features of the PIC16LF18323 include a 32 MHz internal oscillator, 256 bytes of SRAM, 256 bytes of EEPROM, up to 12 I/O pins, a 10-bit ADC with computation, two PWM modules, a 24-bit signal measurement timer, and Peripheral Pin Select (PPS) for flexible signal routing. The CIP (Core Independent Peripheral) functions such as CWG, NCO, and SMT allow hardware-driven tasks without CPU intervention, freeing the core for application logic and further reducing average power.
Typical applications include IoT sensor nodes, wearables, remote controls, battery-powered instrumentation, smart home edge devices, and low-cost LED lighting controllers. The wide 1.8 V to 3.6 V supply range lets a single CR2032 or 2x AA alkaline source power the part directly without an additional regulator, simplifying the schematic.
When designing with this MCU, place a 100 nF bypass capacitor within 2 mm of the VDD pin and a 10 µF bulk capacitor near the IC to support ADC accuracy and clean power-up. Unused I/O pins should be configured as outputs low to minimise quiescent current, and PPS assignments should be locked in code to avoid accidental remapping at runtime.
Drop-in alternatives for PIC16LF18323-I/SL — 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 PIC16LF18323-I/SL (same form factor and footprint) — differing in Package, ADC, DAC, Core Independent Peripherals, I/O Pins.
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PIC16LF18323-I/P
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View Datasheet →PIC16LF18323-I/SL Maximum Ratings & Electrical Characteristics
| Core | PIC16 8-bit RISC |
| Program Memory | 3.5 KB (2K x 14) Flash |
| Data Memory (SRAM) | 256 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | Up to 12 |
| ADC | 10-bit, up to 11 channels |
| PWM Channels | 2 (10-bit) |
| Timers | 5 (8/16-bit, SMT 24-bit) |
| Package | 14-SOIC (3.9 mm body) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Low-Power Feature | XLP nanoWatt (sleep current < 100 nA) |
| Peripheral Pin Select (PPS) | Yes |
| Mounting Style | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant |
PIC16LF18323-I/SL Pin Configuration
| Pin 1 | RA5 — Bidirectional I/O with PPS, also ICSPCLK |
| Pin 2 | RA4 — Bidirectional I/O with PPS, also ICSPDAT |
| Pin 3 | RA3 — Bidirectional I/O with PPS, MCLR/Vpp |
| Pin 4 | RA2 — Bidirectional I/O with PPS, analog input |
| Pin 5 | RA1 — Bidirectional I/O with PPS, analog input |
| Pin 6 | RA0 — Bidirectional I/O with PPS, analog input |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA7 — Bidirectional I/O with PPS, oscillator |
| Pin 9 | RA6 — Bidirectional I/O with PPS, oscillator |
| Pin 10 | RC0 — Bidirectional I/O with PPS |
| Pin 11 | RC1 — Bidirectional I/O with PPS |
| Pin 12 | RC2 — Bidirectional I/O with PPS |
| Pin 13 | RC3 — Bidirectional I/O with PPS |
| Pin 14 | VDD — Positive supply 1.8 V to 3.6 V |
Typical Applications
PIC16LF18323-I/SL is suitable for 6 applications: Battery-Powered Wireless Sensor Nodes, Wearable Health Devices, Remote Controls and Consumer IR, Industrial Sensor Front-Ends, Smart Home Edge Devices, Low-Cost LED Lighting and Indicators.
Battery-Powered Wireless Sensor Nodes
The PIC16LF18323-I/SL's 1.8 V to 3.6 V native supply and nanoWatt XLP sleep current under 100 nA make it a strong fit for battery-driven wireless sensor nodes. Why this MCU fits: it can run directly from a CR2032 coin cell without an external LDO, eliminating quiescent draw from a regulator. The 24-bit Signal Measurement Timer (SMT) captures precise pulse counts from sensors, and the 10-bit ADC with computation (ADC2) averages readings in hardware, letting the CPU remain asleep. With PPS, the UART pins can be routed to any convenient I/O so the RF module can sit next to the antenna. The 3.5 KB Flash is enough for a small duty-cycled application that wakes every few seconds to take a reading and transmit, then returns to Sleep.
Recommended
Wearable Health Devices
Wearables such as fitness bands, smart watches, and medical patches require microamp-level sleep currents and tight PCB area. Why this MCU fits: the 14-SOIC package gives 12 usable I/O, enough to drive an OLED, an accelerometer, and a haptic motor, while the PPS block reassigns peripherals at runtime. The 32 MHz core handles sensor-fusion math, and the 10-bit ADC samples heart-rate and SpO2 photodiode signals directly. Average current in a typical 1 percent duty-cycle wearable stays below 10 µA, extending a CR2032 life past one year.
Recommended
Remote Controls and Consumer IR
TV remote controls and small consumer appliances benefit from the PIC16LF18323's CWG (Complementary Waveform Generator) and NCO (Numerically Controlled Oscillator) for generating accurate IR carrier waveforms in hardware. Why this MCU fits: a 38 kHz IR carrier is generated without CPU intervention, so the firmware can stay in Sleep between key presses. The XLP sleep current under 100 nA means a typical TV remote battery lasts years. The 3.5 KB Flash holds NEC, RC5/RC6, and SIRC protocol decoders comfortably.
Recommended
Industrial Sensor Front-Ends
Industrial 4-20 mA loop sensors, PLC digital inputs, and factory automation edge nodes often operate from 24 V rails but still need a local 3.3 V MCU. Why this MCU fits: the PIC16LF18323's 1.8 V to 3.6 V range lets designers use a small buck or LDO with low quiescent current, while the 10-bit ADC with computation oversamples the input signal for noise rejection. The CIP peripherals (CLC, CWG, NCO) offload logic and PWM generation from the CPU, enabling deterministic response times for safety-critical loops. The 14-SOIC is hand-solderable, which helps field-replaceable modules.
Recommended
Smart Home Edge Devices
Smart-home devices such as door/window sensors, leak detectors, and occupancy nodes need to run for years on a coin cell while periodically reporting over BLE, Sub-GHz, or Wi-Fi. Why this MCU fits: the PIC16LF18323's nanoWatt XLP sleep current under 100 nA combined with a 32 MHz wake-up time under 5 µs lets the design duty-cycle aggressively. PPS reassigns the UART/SPI pins to route the radio's signals without redesigning the PCB. The 3.5 KB Flash and 256 B EEPROM hold a small Zigbee or proprietary protocol stack plus persistent configuration data, and the 14-SOIC package keeps the BOM small.
Recommended
Low-Cost LED Lighting and Indicators
Architectural LED strips, signage dimmers, and indicator lights need PWM brightness control plus reliable low-cost MCU control. Why this MCU fits: the two 10-bit PWM channels drive white or RGB LEDs with smooth dimming, while the CWG and NCO can produce dithered high-resolution PWM for colour mixing. The XLP sleep current lets battery-powered accent LEDs last years. The 14-SOIC is small enough to fit inside inline LED controllers, and 3.5 KB Flash stores simple animation patterns, fade curves, and DMX-like protocols.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18323-I/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF18323-I/P | PIC16LF18323-E/SL | PIC16LF1823-I/SL | PIC16LF1824-I/SL | PIC16LF1704-I/SL |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-SOIC (SL) | 14-PDIP (P) | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same |
| Core / Max Clock | PIC16 8-bit / 32 MHz | PIC16 8-bit / 32 MHz | PIC16 8-bit / 32 MHz | PIC16 8-bit / 32 MHz | PIC16 8-bit / 32 MHz | PIC16 8-bit / 32 MHz |
| Flash | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 7 KB | 4 KB |
| SRAM | 256 B | 256 B | 256 B | 128 B | 256 B | 256 B |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Operating Voltage | 1.8 V - 3.6 V | 1.8 V - 3.6 V | 1.8 V - 3.6 V | 1.8 V - 3.6 V | 1.8 V - 3.6 V | 1.8 V - 3.6 V |
| Peripheral Pin Select (PPS) | Yes | Yes | Yes | No | Yes | Yes |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Extended -40C to +125C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C |
Key Differentiators
- Lowest-cost 8-bit MCU with PPS in 14-SOIC (vs PIC16LF1823-I/SL)
- More Flash than legacy PIC16LF1823 family (vs PIC16LF1824-I/SL)
- Industrial vs Extended temperature options (vs PIC16LF18323-E/SL)
Design Notes
Place a 100 nF ceramic bypass capacitor within 2 mm of the VDD pin and a 10 µF bulk capacitor near the IC to stabilise the rail during ADC conversions and sleep-wake transitions. For best nanoWatt XLP performance, drive unused I/O pins as outputs low and disable unused peripherals in firmware via PMD registers. Estimated: at a 1 percent duty cycle with 5 ms active and 495 ms Sleep, the average current is approximately (5 ms x 25 µA/MHz x 8 MHz) / 500 ms + 100 nA ≈ 2 µA average, giving a CR2032 cell a multi-year theoretical life.
Keep the ICSP programming lines (RA4/RA5) accessible in the PCB layout so production programming and debugging remain possible after assembly. Route the analog ADC inputs away from switching nodes and PWM signals to reduce crosstalk into the ADC. Use a ground pour on the bottom layer directly under the SOIC pads to provide thermal relief and a low-impedance return path for digital switching currents.
PPSLOCK must be set after configuring Peripheral Pin Select assignments, otherwise runtime code can inadvertently re-route a peripheral and break the firmware. Do not exceed 3.6 V on VDD - the LF variant is not 5 V tolerant. When migrating from PIC16F to PIC16LF, double-check that any 5 V peripherals in the design are level-shifted down or removed. The MCLR pin (RA3) must be pulled high through a 10 kΩ resistor for normal operation; leaving it open can cause erratic resets.
The internal 32 MHz oscillator has a calibrated accuracy of approximately ±2 percent across temperature, which is fine for UART baud rates up to 9600 with default OSCTUNE. For 115200 baud or high-speed SPI, consider enabling the FPLL (if available on the chosen variant) or an external crystal. PPS pin assignments to high-impedance analogue inputs should be avoided because the digital buffer leakage can corrupt the ADC sample.
Compliance Information
RoHS and REACH compliant per Microchip product declaration. AEC-Q100 grade not applicable to this industrial-grade part; automotive users should review PIC16F variants instead. Tube packaging default, MSL1 rated per JEDEC J-STD-020.
