PIC16F18324-E/SL - 8-Bit XLP MCU 7KB Flash 32MHz | Microchip
MPN: PIC16F18324-E/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.34 | $1.34 |
| 10 | $1.21 | $12.10 |
| 100 | $1.05 | $105.00 |
| 500 | $0.93 | $465.00 |
| 1,000 | $0.84 | $840.00 |
| 3,000 | $0.74 | $2,220.00 |
PIC16F18324-E/SL Overview
What is a microcontroller (MCU)? An MCU is a single-chip computer containing a CPU, non-volatile program memory (Flash), volatile working memory (RAM), small EEPROM for data persistence, and integrated peripherals such as timers, ADC, communication interfaces, and I/O pins. Microcontrollers are the foundation of embedded systems, sitting below microprocessors in capability but above discrete logic in integration. They form the lowest tier of programmable silicon used in IoT endpoints, sensor nodes, and consumer appliances. PIC microcontrollers from Microchip use a RISC-based Harvard design that has shipped in billions of units since the 1970s.
Key features include a 10-bit ADC with computation (ADC2), 5-bit DAC, 2 op-amps, 2 comparators, 4 8-bit timers and 1 16-bit timer, Configurable Logic Cells (CLC), Complementary Waveform Generator (CWG), Numerically Controlled Oscillator (NCO), and Zero-Cross Detect (ZCD). Communication interfaces include I2C, SPI, and EUSART with auto-baud detect. Peripheral Pin Select (PPS) enables flexible pin mapping.
The PIC16F18324 uses an enhanced mid-range 8-bit core with a 14-bit instruction word and a hardware multiplier. The device ID indicates revision A2 silicon. XLP technology provides sleep currents in the nanoampere range with a typical IDD of 1.8 uA at 32 kHz / 1.8V in sleep, enabling years of battery life from a coin cell.
Typical applications include battery-powered IoT sensor nodes, wearables, smart home devices, low-power wireless sensor transmitters, and general-purpose embedded control in industrial and consumer products. The 14-pin SOIC footprint supports hand-soldering and is friendly to prototyping and small-batch assembly.
When designing with this device, enable the watchdog timer (WDT) for reliable field operation and use the PPS feature to remap peripherals to convenient pins. For battery-powered designs, take advantage of the DOZE, IDLE, and SLEEP modes, and use the ADC2 computation feature to offload threshold averaging from the CPU.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving a single source of truth for component selection.
Drop-in alternatives for PIC16F18324-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 PIC16F18324-E/SL (same form factor and footprint) — differing in Package, Core Architecture, ADC, I/O Pins, Operating Temperature Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18325-E/SL
✅ Drop-In✓ In Stock
$0.96 / Unit
View Datasheet →PIC16F18323-E/SL
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16F18324-E/P
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →PIC16F18324-I/SL
✅ Drop-In✓ In Stock
$0.82 / Unit
View Datasheet →PIC16F1824-E/SL
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.04 / Unit
View Datasheet →PIC16F1823-E/SL
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.55 / Unit
View Datasheet →PIC16F1825-I/SL
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.84 / Unit
View Datasheet →PIC16F18324-E/SL Maximum Ratings & Electrical Characteristics
| Product Family | PIC16F1xxx enhanced mid-range 8-bit MCU |
| Core | 8-bit PIC RISC |
| Instruction Set | 14-bit enhanced mid-range |
| Program Flash Memory | 7 KB (4K x 14 words) |
| RAM | 512 B |
| EEPROM | 256 B |
| Maximum CPU Frequency | 32MHz |
| Operating Voltage (VDD) | 2.3V to 5.5V |
| I/O Pins | 11 (with PPS remap) |
| ADC | 10-bit, with computation (ADC2) |
| DAC | 5-bit |
| Comparators | 2 |
| Op-amps | 2 |
| Timers | 4 x 8-bit, 1 x 16-bit |
| Communication | I2C, SPI, EUSART (auto-baud) |
| Special Peripherals | CLC, CWG, NCO, ZCD, DSM |
| XLP Sleep Current (typ) | 1.8 uA at 1.8V / 32 kHz |
| Package | 14-pin SOIC (SL), 3.90 mm body width |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C (extended, E suffix) |
| MSL Level | 1 (unlimited floor life) |
| RoHS Status | Compliant |
| Functional Safety | FuSa features per Microchip AN |
PIC16F18324-E/SL Pin Configuration
| Pin 1 | VDD — Positive power supply input (2.3V to 5.5V) |
| Pin 2 | RA5 — Digital I/O with PPS remap; analog input capable |
| Pin 3 | RA4 — Digital I/O with PPS remap; analog input capable |
| Pin 4 | RA3/MCLR — Digital I/O or Master Clear reset input (external pull-up required for normal operation) |
| Pin 5 | RC5 — Digital I/O with PPS remap; analog input capable |
| Pin 6 | RC4 — Digital I/O with PPS remap; analog input capable |
| Pin 7 | RC3 — Digital I/O with PPS remap; analog input capable |
| Pin 8 | RC2 — Digital I/O with PPS remap; analog input capable |
| Pin 9 | RC1 — Digital I/O with PPS remap; analog input capable |
| Pin 10 | RC0 — Digital I/O with PPS remap; analog input capable |
| Pin 11 | RA2 — Digital I/O with PPS remap; analog input capable |
| Pin 12 | RA1 — Digital I/O with PPS remap; analog input capable; ICSPCLK |
| Pin 13 | RA0 — Digital I/O with PPS remap; analog input capable; ICSPDAT |
| Pin 14 | VSS — Ground reference (0V) |
Typical Applications
PIC16F18324-E/SL is suitable for 7 applications: Battery-Powered IoT Sensor Node, Wearable Health Monitor, Smart Home Sensor / Edge Node, Automotive Body Electronics (AEC-Q100 grade), Industrial Control & Sensor Interface, Consumer Appliance Control, Low-Power Wireless Beacon / BLE Beacon.
Battery-Powered IoT Sensor Node
The PIC16F18324-E/SL is purpose-built for battery-powered IoT sensor nodes through Microchip's XLP (eXtreme Low Power) technology. Its 1.8 uA typical sleep current at 1.8V / 32 kHz and nanoWatt XLP deep-sleep mode below 100 nA enable years of operation from a single CR2032 coin cell. The 7 KB Flash holds small protocol stacks (sub-GHz RF drivers, BLE beacon advertising) while the ADC2 computation engine performs threshold averaging in hardware, freeing the CPU from continuous wake-ups and extending battery life dramatically.
Recommended
Wearable Health Monitor
Wearable health monitors demand both low power and analog sensor integration. The PIC16F18324-E/SL combines two on-chip op-amps for signal conditioning, a 10-bit ADC2 with computation for heart-rate or pulse-oximetry sampling, and a 5-bit DAC for bias generation - all in a tiny 14-pin SOIC package. The XLP sleep modes let the wearable idle at under 2 uA between sensor reads, while Peripheral Pin Select (PPS) frees the PCB designer to route analog and digital signals on adjacent layers without pin remapping gymnastics.
Recommended
Smart Home Sensor / Edge Node
In smart home deployments, the PIC16F18324-E/SL serves as a low-cost edge node reading environmental sensors (motion, light, humidity, gas) and forwarding data over UART to a Zigbee or BLE host. Its 32MHz core provides ample MIPS for sensor fusion, while the Configurable Logic Cells (CLC) implement glue logic that normally requires a separate AND/OR gate IC - reducing BOM cost and PCB area. The 256 B EEPROM stores calibration data and last-known states through power cycles for grid-down memory retention.
Recommended
Automotive Body Electronics (AEC-Q100 grade)
For non-safety automotive body modules - seat controllers, mirror adjusters, ambient lighting, interior sensors - the PIC16F18324 family offers AEC-Q100 Grade 1 qualified variants marked with the -VAO suffix. The extended -40C to +125C operating range of the E temperature grade handles under-dash thermal stress, and the PWM-driven Complementary Waveform Generator (CWG) drives LEDs or small motors with dead-band control. The on-chip comparators and op-amps interface directly to current-sense resistors and thermistors without external signal conditioning.
Recommended
Industrial Control & Sensor Interface
In industrial 4-20mA loop-powered transmitters and isolated sensor interfaces, the PIC16F18324-E/SL provides on-chip op-amps that condition bridge sensors directly, a hardware 10-bit ADC2 that oversamples to improve effective resolution, and two comparators that implement window-detect thresholds without CPU overhead. The Numerically Controlled Oscillator (NCO) generates precision PWM outputs up to 100 kHz for valve or heater control, while the Zero-Cross Detect (ZCD) hardware supports TRIAC-based AC dimming without software timing jitter.
Recommended
Consumer Appliance Control
Small consumer appliances (coffee makers, air purifiers, electric toothbrushes, kitchen scales) benefit from the PIC16F18324-E/SL's combination of a 14-pin SOIC footprint suitable for hand-soldering repairs, on-chip op-amps for weight or pressure sensing, hardware CLC for custom logic, and PWM for motor or buzzer control. The 5-bit DAC drives LED backlight brightness, while the auto-baud EUSART interfaces with Bluetooth or Wi-Fi modules using no external baud-rate crystal - reducing BOM cost for high-volume consumer products.
Recommended
Low-Power Wireless Beacon / BLE Beacon
BLE beacons and LoRaWAN endpoints need MCUs that spend most of their time asleep and wake only to transmit short packets. The PIC16F18324-E/SL's XLP sleep current below 2 uA combined with sub-us wake time from the RTCC makes it ideal for battery-powered beacons transmitting every 1-10 seconds. The EUSART with auto-baud detects the host module's baud rate without manual configuration, while the 14-pin SOIC package fits inside coin-cell holders for ultra-thin form factors.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18324-E/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18325-E/SL | PIC16F18323-E/SL | PIC16F18324-E/P | PIC16F18324-I/SL | PIC16F1824-E/SL |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-pin SOIC (SL) | 14-pin SOIC (SL) - same | 14-pin SOIC (SL) - same | 14-pin PDIP (P) - thru-hole | 14-pin SOIC (SL) - same | 14-pin SOIC (SL) - same |
| Flash Memory | 7 KB | 14 KB | 4 KB | 7 KB (same) | 7 KB (same) | 7 KB |
| RAM | 512 B | 1 KB | 256 B | 512 B (same) | 512 B (same) | 384 B |
| EEPROM | 256 B | 256 B | 128 B | 256 B (same) | 256 B (same) | 256 B |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V | 1.8V to 5.5V (wider) |
| Temperature Grade | Extended (-40C to +125C) | Extended (-40C to +125C) | Extended (-40C to +125C) | Extended (-40C to +125C) | Industrial (-40C to +85C) | Extended (-40C to +125C) |
| On-chip Op-amps | 2 | 2 | 2 | 2 | 2 | 0 (none) |
| ADC2 / CLC / NCO / CWG | Yes | Yes | Yes | Yes | Yes | No (older peripheral set) |
Key Differentiators
- On-chip op-amps and 5-bit DAC eliminate external signal conditioning (vs PIC16F18323-E/SL)
- ADC2 hardware computation engine offloads averaging from CPU (vs PIC16F1824-E/SL)
- Configurable Logic Cells (CLC) implement glue logic in hardware (vs PIC16F1825-I/SL)
- Numerically Controlled Oscillator (NCO) generates precision PWM to 100 kHz (vs PIC16F1827-I/SO)
- PPS (Peripheral Pin Select) enables flexible PCB routing (vs PIC16F1823-E/SL)
Design Notes
The PIC16F18324-E/SL's XLP sleep current of 1.8 uA at 1.8V / 32 kHz enables coin-cell battery life of 3-5 years for typical sensor-node duty cycles (1 wake per second). Use the nanoWatt XLP mode (PE bits in CONFIG2) for lowest sleep current (<100 nA typical), and remember to disable the ADC, comparator, and FVR peripherals before sleep to avoid parasitic current draw. For battery voltage monitoring, use the BOR module rather than a separate voltage reference to save current.
Place the 0.1 uF VDD decoupling capacitor within 3 mm of the VDD pin (pin 1) and a 10 uF bulk capacitor at the board's power entry point. Keep the crystal/oscillator traces short (under 5 mm) and guard the analog pins (RA0-RA5, RC0-RC5) from digital switching signals with a ground guard ring or by routing analog signals on an inner layer. For PPS remapping, document the assignments in the firmware header so firmware changes remain traceable to PCB pinout.
Do not connect MCLR (pin 4) directly to VDD without a pull-up resistor and 10 nF capacitor - the in-circuit serial programmer requires this RC network for reliable programming. Avoid using the ICSPDAT/ICSPCLK pins (RA0, RA1) as outputs driving high-current loads during programming, which can interfere with ICSP. Enable the watchdog timer (WDT) with a 1-second timeout for reliable field operation, and use the CONFIG1/2 word settings in the IDE rather than relying on default fuses.
Route the ICSP signals (ICSPCLK on RA1, ICSPDAT on RA0) directly to a 6-pin header on the board edge for easy programming and debugging. If the board uses SOIC-14, allow access to both sides of the chip or use a Tag-Connect or pogo-pin programming footprint to avoid manual clip connection in the field. For PPS-heavy designs, document the pin mapping in a configuration table so firmware engineers can change peripheral assignments without re-spinning the PCB.
When using the on-chip op-amps for sensor signal conditioning, route the op-amp outputs away from high-frequency digital traces (PWM, SPI clock) to avoid coupling into the analog chain. The 10-bit ADC2 achieves best results with an acquisition time of at least 4 us and a 100 nF hold capacitor on the analog input pin. For ratiometric measurements (bridge sensors, thermistors), use the on-chip FVR (Fixed Voltage Reference) as the ADC reference to cancel VDD variation.
Compliance Information
RoHS and REACH compliant per Microchip product page. AEC-Q100 Grade 1 qualified variants available with -VAO suffix for automotive applications. The E temperature grade is extended industrial (-40C to +125C), not specifically AEC-Q100.
