PIC16LF18326-E/SL - 8-bit 32MHz XLP MCU 28KB Flash | Microchip
MPN: PIC16LF18326-E/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.1 | $2.10 |
| 10 | $1.89 | $18.90 |
| 100 | $1.62 | $162.00 |
| 500 | $1.38 | $690.00 |
| 1,000 | $1.18 | $1,180.00 |
| 3,000 | $1.02 | $3,060.00 |
PIC16LF18326-E/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, and configurable peripherals such as ADC, timers, communication interfaces, and I/O ports. The PIC16F 8-bit family uses a RISC-based Harvard architecture with 14-bit instruction words, balancing deterministic execution with low cost. Within the broader taxonomy, the PIC16LF18326 sits at microcontroller -> 8-bit MCU -> PIC16 -> PIC16F XLP, where XLP denotes Microchip's eXtreme Low Power variant with sub-uA sleep modes for energy harvesting and battery-backed products.
Key features include a 10-bit ADC with computation (ADC2), a 5-bit DAC, two comparators, a 10-bit PWM module, capture/compare/PWM (CCP), Configurable Logic Cells (CLC), Numerically Controlled Oscillator (NCO), Complementary Waveform Generator (CWG), and Peripheral Pin Select (PPS). Communication interfaces include one EUSART with LIN support, one SPI, and one I2C. The 14-pin SOIC SL package exposes 12 I/O pins via PPS remapping, easing PCB routing when peripherals are reassigned.
Architecturally the PIC16LF18326 uses Microchip's enhanced mid-range core with a vectored interrupt controller and hardware multiply assist. The XLP blocks include nanoWatt XLP sleep (typically <50 nA typical at 1.8V), Windowed Watchdog Timer (WWDT), and idle/doze operating modes that gate the CPU clock while peripherals run, allowing continuous ADC sampling at < 1 mA active.
Typical applications include battery-powered sensor nodes, wearable health patches, low-power remote controls, industrial IoT edge nodes, smart metering, and small appliance control boards where a TSSOP/SOIC footprint fits the enclosure.
Design considerations: leverage PPS to remap EUSART, SPI or I2C to any digital I/O, freeing fixed peripheral pins for analog functions. Place the 0.1 uF VDD decoupling capacitor within 5 mm of the VDD pin and a 10 uF bulk reservoir near the regulator.
This page synthesizes distributor pricing, drop-in same-package and cross-brand alternatives, and practical low-power design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for PIC16LF18326-E/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 PIC16LF18326-E/SL (same form factor and footprint) — differing in ADC, Package, DAC, MSL Level, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18326-E/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF18325-E/SL
✅ Drop-In✓ In Stock
$0.92 / Unit
View Datasheet →PIC16LF18324-E/SL
✅ Drop-In✓ In Stock
$0.6 / Unit
View Datasheet →PIC16F18326-I/SL
✅ Drop-In✓ In Stock
$0.7 / Unit
View Datasheet →PIC16LF18326-I/SL
✅ Drop-In📋 Reference alternative (not in catalog)
ATtiny1626-SNR
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF18326-E/SL Maximum Ratings & Electrical Characteristics
| Core | PIC16 8-bit enhanced mid-range RISC |
| CPU Speed | 32 MHz (8 MIPS) |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data Memory (RAM) | 2 KB |
| EEPROM | 256 B |
| I/O Pins | 12 (PPS remappable) |
| ADC | 10-bit ADC2 with averaging |
| DAC | 5-bit DAC, 1 channel |
| Comparators | 2 |
| PWM | 10-bit PWM, plus CCP and CWG |
| CLC / NCO / CWG | Configurable Logic Cell, NCO, Complementary Waveform Generator |
| Communication | 1x EUSART (LIN), 1x SPI, 1x I2C |
| Supply Voltage | 1.8 V to 3.6 V (LF, low-voltage) |
| Operating Temperature | -40C to +125C (E = Extended) |
| Package | 14-pin SOIC (SL) |
| RoHS Status | Compliant |
| MSL Level | 1 (unlimited floor life at <30C / 85% RH) |
PIC16LF18326-E/SL Pin Configuration
| Pin 1 | VDD — Positive supply (1.8V to 3.6V) |
| Pin 2 | RA5 — Digital I/O, analog input, PPS remappable |
| Pin 3 | RA4 — Digital I/O, analog input, PPS remappable |
| Pin 4 | RA3 — Digital I/O, MCLR/Vpp (input only) |
| Pin 5 | RC5 — Digital I/O, analog input, PPS remappable |
| Pin 6 | RC4 — Digital I/O, analog input, PPS remappable |
| Pin 7 | RC3 — Digital I/O, analog input, PPS remappable |
| Pin 8 | RC2 — Digital I/O, analog input, PPS remappable |
| Pin 9 | RC1 — Digital I/O, ICSPCLK programming, PPS remappable |
| Pin 10 | RC0 — Digital I/O, ICSPDAT programming, PPS remappable |
| Pin 11 | RA2 — Digital I/O, analog input, PPS remappable |
| Pin 12 | RA1 — Digital I/O, analog input, ICSPCLK alt |
| Pin 13 | RA0 — Digital I/O, analog input, ICSPDAT alt |
| Pin 14 | VSS — Ground |
Typical Applications
PIC16LF18326-E/SL is suitable for 6 applications: Battery-Powered IoT Sensor Node, Wearable Health Patch, Smart Remote Control (HMI or Consumer IR), Industrial IoT Edge Node, Smart Metering Sub-System, Small Appliance Control Board.
Battery-Powered IoT Sensor Node
The PIC16LF18326-E/SL fits battery-powered IoT sensor nodes thanks to its 1.8 V to 3.6 V LF voltage range and XLP sleep currents below 50 nA typical. The 10-bit ADC2 with computation oversamples the sensor signal while the CPU remains in Sleep mode, waking only via interrupt to read the result over EUSART or SPI. With 28 KB Flash it accommodates lightweight LoRaWAN, Bluetooth Low Energy HCI pass-through, or proprietary sub-GHz stacks before requiring a more powerful Cortex-M0+. Power budget: a typical CR2032 cell delivers over 10 years service life when the MCU wakes once per second for ADC conversion plus transmit.
Recommended
Wearable Health Patch
Wearables benefit from the PIC16LF18326-E/SL's compact 14-SOIC footprint and XLP idle current under 5 uA. The two on-chip comparators detect low-battery thresholds and PPG sensor signals, while the 5-bit DAC generates bias voltage for the optical front-end. Peripheral Pin Select remaps the I2C bus to any pair of digital pins, letting the PCB layout place the accelerometer next to its decoupling cap. The 2 KB RAM holds circular buffers for heart-rate variability before BLE forwarding, and 256 B EEPROM stores calibration coefficients. Sleep current at 1.8 V is below 100 nA typical, supporting multi-day wear health regimens without recharging.
Recommended
Smart Remote Control (HMI or Consumer IR)
Consumer remote controls leverage the PIC16LF18326-E/SL's PWM output, CWG (Complementary Waveform Generator) for IR carrier generation, and EUSART for factory programming. With 32 MHz HFINTOSC the device generates accurate 38 kHz / 56 kHz IR carriers without an external crystal, reducing BOM cost. The 12 PPS-remappable I/O accommodate a 4x4 keypad matrix plus LED indicators within the 14-SOIC footprint. Two AAA cells (3 V) fall within the 1.8 V to 3.6 V LF range, and XLP sleep currents keep the standby life measured in years. The CLC (Configurable Logic Cell) handles key-scanning autonomously, freeing the CPU entirely.
Recommended
Industrial IoT Edge Node
Industrial edge nodes benefit from the PIC16LF18326-E/SL's extended -40C to +125C operating range and 32 MHz throughput for on-device pre-processing of analog and digital sensors. The 10-bit ADC2 with hardware averaging and oversampling provides 12-bit equivalent accuracy without external components, while the EUSART supports LIN bus for industrial actuator networks. PPS allows the SPI bus to drive a local display or external FRAM, and the Windowed Watchdog Timer (WWDT) satisfies IEC 60730 functional-safety library requirements for household appliances - reducing certification cost when migrating from a discrete watchdog to a self-contained MCU.
Recommended
Smart Metering Sub-System
Smart electricity and water meters use the PIC16LF18326-E/SL for tamper detection, metrology front-end control, and asynchronous communication. The two on-chip comparators watch battery voltage and tamper switch closures, triggering secure EEPROM logging of the active calibration tables. The 5-bit DAC generates the temperature-compensation bias for the metering IC. With PPS, EUSART and I2C coexist on the same digital I/O pool, allowing both a local LCD driver and an optical UART port to share pins. LF operation at 1.8 V supports direct lithium-thionyl-chloride cell operation with sub-uA quiescent draw.
Recommended
Small Appliance Control Board
Small appliances (coffee machines, blenders, air purifiers) rely on the PIC16LF18326-E/SL for motor control via the CWG and CCP/PWM modules, plus user-interface I/O on the 12 PPS-remappable pins. The 32 MHz CPU provides ample MIPS for sensor-fusion algorithms and PID loops driving BLDC or brushed DC motors. The 10-bit ADC2 measures NTC thermistors, current-sense amplifiers and rotary encoders simultaneously, while the 5-bit DAC biases analog front-ends. With the LF voltage range, a 3.3 V LDO-less design is feasible when powered directly from a 3.0 V buck regulator, reducing BOM cost in cost-sensitive consumer products.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18326-E/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18326-E/SL | PIC16LF18325-E/SL | PIC16LF18324-E/SL | PIC16F18326-I/SL | PIC16LF18326-I/SL | ATtiny1626-SNR |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology (former Atmel) |
| Package | 14-SOIC (SL) | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SN) - same footprint, AVR core |
| Core | PIC16 8-bit enhanced mid-range | PIC16 8-bit enhanced mid-range | PIC16 8-bit enhanced mid-range | PIC16 8-bit enhanced mid-range | PIC16 8-bit enhanced mid-range | PIC16 8-bit enhanced mid-range | AVR 8-bit |
| CPU Speed | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 20 MHz (20 MIPS) |
| Flash | 28 KB | 28 KB | 14 KB | 7 KB | 28 KB | 28 KB | 16 KB |
| RAM | 2 KB | 2 KB | 2 KB | 1 KB | 2 KB | 2 KB | 2 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B (emulated) |
| Operating Voltage | 1.8 V to 3.6 V | 2.3 V to 5.5 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 | 1.8 V to 5.5 V |
| Operating Temperature | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +105C |
| Unit Price (qty 1) | $2.10 | $2.30 | $1.85 | $1.65 | $2.30 | $2.10 | $1.95 |
Key Differentiators
- Industry-leading XLP sleep current below 50 nA typical (vs ATtiny1626-SNR)
- Functional safety (FuSa) capable sibling available in same package (vs PIC16LF18325-E/SL)
- Peripheral Pin Select on all digital I/O (vs PIC16LF1704-E/SL)
Design Notes
Estimated: at VDD=3.3 V with HFINTOSC=32 MHz active mode, IDD is approximately 5 mA per the Microchip PIC16(L)F18326/18346 datasheet. In Sleep mode at 1.8 V, IDD drops to typically below 50 nA. To leverage XLP, disable unused peripherals (ADC, DAC, comparators) in firmware using the PMD registers before entering Sleep. Use the Windowed Watchdog Timer (WWDT) with the LFINTOSC for autonomous wake-up cycles.
Place a 100 nF (0.1 uF) decoupling capacitor within 5 mm of the VDD pin (pin 1) and a 10 uF bulk reservoir near the regulator. The 14-SOIC (SL) package has 12 I/O pins that share the same analog and digital domain; place the analog traces on a separate island from the HFINTOSC traces to reduce noise coupling. The datasheet recommends a ground ring under the SOIC footprint connected to VSS pin 14.
Do not exceed VDD=3.6 V on the LF variant or risk damage. The LF speed grade tops out at 32 MHz only when VDD is 2.5 V or above; below that, the maximum is 16 MHz. PPS remapping requires writing the PPS lock registers in the correct unlock sequence - firmware without unlock will silently fail peripheral remap. The internal HFINTOSC is factory calibrated but drifts up to +/- 2% over temperature; use FVR (Fixed Voltage Reference) for ADC accuracy.
When routing the SPI bus above 8 MHz, use a 50 ohm controlled-impedance trace and add a 33 ohm series resistor near the master pin to dampen reflections. The I2C bus supports standard (100 kHz), fast (400 kHz) and fast-plus (1 MHz) modes; add 4.7 kohm pull-ups for fast-mode operation. PPS allows EUSART, SPI and I2C to share any digital I/O pin, but only one peripheral may be active per pin at any time.
