PIC16F18424-E/ST - 8-bit MCU, 7KB Flash, 32MHz, TSSOP-14 | Microchip
MPN: PIC16F18424-E/ST β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.28 | $12.80 |
| 100 | $1.05 | $105.00 |
| 500 | $0.92 | $460.00 |
| 1,000 | $0.81 | $810.00 |
PIC16F18424-E/ST Overview
An 8-bit microcontroller (MCU) is a small computer-on-a-chip that combines a CPU, memory, and peripherals around an 8-bit data bus. It belongs to the broader category of microcontrollers -> embedded processors -> integrated circuits -> semiconductors. PIC microcontrollers use a modified Harvard RISC architecture that executes most instructions in a single clock cycle, which is why the PIC16F18424 can sustain 32MHz core operation while maintaining very low active and sleep currents.
Key features of this part include 4K x 14 words of Flash (7KB), 256 bytes of EEPROM, 512 bytes of SRAM, 12-bit ADCC with automatic averaging, 5-bit DAC, two capture/compare/PWM modules, CWG, 2 comparators, EUSART, SPI, I2C, and up to 12 I/O pins. The device operates from 2.5V to 5.5V across an industrial temperature range of -40C to +125C, and includes the eXtreme Low-Power (XLP) sleep currents required for battery-powered designs.
The PIC16F18424 uses Microchip's enhanced mid-range core with a 14-bit instruction word and 16-level hardware stack. Functional Safety (FuSa) variants are available in the same family for IEC 61508 SIL applications, and the on-chip CWG plus high-resolution PWM enable motor, lighting, and Class-D audio topologies without external timing logic.
Typical applications include low-power sensor nodes, IoT end nodes, LED lighting controls, battery management front-ends, consumer appliances, and automotive body electronics. The integrated CIPs allow analog signal conditioning, sensor interfacing, and actuator driving with minimal external component count.
When designing with this MCU, ensure the configuration words are set correctly for the intended oscillator mode, allocate I/O pin remapping through PPS before locking the pinout, and reserve budget for ICD/ICSP header access during development.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single source for selection, sourcing, and PCB-level integration decisions.
Drop-in alternatives for PIC16F18424-E/ST β 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 PIC16F18424-E/ST (same form factor and footprint) β differing in ADC, Comparators, Core, Functional Safety, Package.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16F18324-E/STVAO
β Drop-Inβ In Stock
$1.12 / Unit
View Datasheet βPIC16F1824-E/ST
β Drop-Inπ Reference alternative (not in catalog)
PIC16F18425-E/ST
β Drop-Inβ In Stock
$1.28 / Unit
View Datasheet βPIC16F18424-E/ST Maximum Ratings & Electrical Characteristics
| Core | PIC 8-bit RISC (Enhanced Mid-Range, 14-bit instruction word) |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| SRAM | 512 B |
| EEPROM | 256 B |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage Range | 2.5 V to 5.5 V |
| Operating Temperature Range | -40 C to +125 C (Industrial, 'E' suffix) |
| ADC | 12-bit ADC with Computation (ADCC) |
| DAC | 5-bit DAC |
| PWM | 2 x PWM (10-bit), plus Complementary Waveform Generator (CWG) |
| Comparators | 2 |
| Communication Interfaces | EUSART, SPI, I2C |
| I/O Pins | Up to 12 |
| Package | 14-pin TSSOP |
| Low-Power Technology | eXtreme Low-Power (XLP) |
| Functional Safety | FuSa-capable family variants available |
| RoHS Status | Compliant |
PIC16F18424-E/ST Pin Configuration
| Pin 1 | RA0/ANA0/C1IN0+/IOC β Bidirectional I/O; analog input; comparator input |
| Pin 2 | RA1/ANA1/C1IN1-/IOC β Bidirectional I/O; analog input; comparator input |
| Pin 3 | RA2/ANA2/DAC1OUT1/C1OUT β Bidirectional I/O; analog input; DAC output; comparator output |
| Pin 4 | RA3/VPP/MCLR β Bidirectional I/O; programming voltage; Master Clear reset |
| Pin 5 | RA4/ANA4/T0CKI/C2OUT β Bidirectional I/O; analog input; Timer0 clock; comparator output |
| Pin 6 | RA5/ANA5/C1IN2-/IOC β Bidirectional I/O; analog input; comparator input |
| Pin 7 | VSS β Ground reference |
| Pin 8 | RB4/ANB4/SDA1 β Bidirectional I/O; analog input; I2C data |
| Pin 9 | RB5/ANB5/RX1/DT1 β Bidirectional I/O; analog input; EUSART RX |
| Pin 10 | RB6/ANB6/SCK1/SCL1 β Bidirectional I/O; analog input; SPI clock / I2C clock |
| Pin 11 | RB7/ANB7/TX1/CK1 β Bidirectional I/O; analog input; EUSART TX |
| Pin 12 | VDD β Positive supply voltage (2.5V to 5.5V) |
| Pin 13 | RA6/ANA6/OSC2/CLKR β Bidirectional I/O; analog input; oscillator output |
| Pin 14 | RA7/ANA7/OSC1/CLKIN β Bidirectional I/O; analog input; oscillator input |
Typical Applications
PIC16F18424-E/ST is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, LED Lighting and Color Control, Automotive Body Electronics, Consumer Appliance Control Boards, Medical Monitoring Wearables, Industrial Sensor Transmitters.
Battery-Powered IoT Sensor Nodes
The PIC16F18424-E/ST fits battery-powered IoT sensor nodes because its eXtreme Low-Power (XLP) technology delivers sub-microamp sleep currents while the 12-bit ADCC with computation can autonomously oversample and threshold-detect sensor inputs without waking the CPU. The integrated temperature sensor and 5-bit DAC simplify calibration routines, and the 32MHz core provides enough MIPS for AES-128 encryption on transmitted packets. EUSART plus I2C and SPI peripherals support simultaneous connection to a wireless transceiver and an environmental sensor array, while the 256-byte EEPROM stores configuration and calibration constants across battery swaps. The TSSOP-14 footprint fits coin-cell form factors and the 2.5V minimum supply supports direct LiSOCl2 or LiMnO2 cell operation.
Recommended
LED Lighting and Color Control
The PIC16F18424-E/ST is well matched to LED lighting and color-control applications thanks to its Complementary Waveform Generator (CWG), which produces dead-band-controlled complementary PWM outputs for half-bridge LED drivers without external timing logic. The 12-bit ADCC and two comparators allow closed-loop current sensing on the LED string, while the 5-bit DAC provides bias reference for photodiode ambient-light sensing. The 32MHz core sustains smooth DMX512, DALI, or proprietary lighting protocol decoding while the CWG handles dimming PWMs at up to 20kHz with zero CPU overhead. EUSART and I2C support connection to wireless lighting modules and digital temperature sensors for thermal foldback protection.
Recommended
Automotive Body Electronics
The PIC16F18424-E/ST suits automotive body-electronics modules such as door lock controllers, ambient lighting, seat-position sensing, and HVAC damper drivers, where its -40C to +125C industrial temperature range and 5.5V supply tolerance directly interface with 12V battery rails via external transients. The CWG generates complementary PWMs for small DC motor drivers, while the 12-bit ADCC digitizes potentiometer wiper positions and thermistor networks with hardware-averaging to reduce CPU load. The EUSART supports LIN slave communication via external transceiver, and the 512-byte SRAM handles LIN protocol state machines comfortably. For full AEC-Q100 qualified parts, consider the PIC16F184xx family variants with the -VAO suffix.
Recommended
Consumer Appliance Control Boards
The PIC16F18424-E/ST is a strong fit for consumer appliance control boards such as coffee makers, blenders, washing-machine user interfaces, and small kitchen robots, where the integrated 12-bit ADCC reads multiple sensor inputs (temperature, humidity, motor current) with zero CPU overhead. The CWG and two PWMs drive brushed DC motors, solenoids, and TRIAC-based AC loads while the comparator implements zero-cross detection for line-frequency synchronization. The 256-byte EEPROM stores user preferences and calibration across power cycles, and the 7KB Flash accommodates state-machine firmware plus bootloader for field updates. The TSSOP-14 footprint is hand-solderable for low-volume SKUs.
Recommended
Medical Monitoring Wearables
The PIC16F18424-E/ST supports medical-grade wearable monitors (heart-rate, SpO2, temperature patches) thanks to its XLP sleep current below 1uA and the 12-bit ADCC that oversamples bioelectric signals with hardware averaging, reducing CPU wake events and preserving battery life. The 5-bit DAC generates bias voltages for optical SpO2 sensor LEDs, while the two comparators detect battery-low and signal-saturation thresholds. EUSART and I2C connect to BLE radios and external analog front-ends; the 512-byte SRAM buffers sensor frames between transmission bursts. The TSSOP-14 compact form factor enables wrist-band and patch designs with 1-2 week battery life.
Recommended
Industrial Sensor Transmitters
The PIC16F18424-E/ST is well matched to 4-20mA and IO-Link industrial sensor transmitters, where its 12-bit ADCC digitizes bridge, RTD, and thermocouple signals with hardware oversampling and the 5-bit DAC provides excitation bias for ratiometric measurements. The CWG and PWMs drive H-bridge actuators in valve-positioner applications, while EUSART or I2C talk to external IO-Link PHYs or wireless gateways. The -40C to +125C industrial temperature range, 5.5V supply tolerance, and integrated EEPROM for calibration constants make it ideal for harsh factory-floor installations with 10+ year service intervals.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18424-E/ST β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18424-E/SL | PIC16F18324-E/ST | PIC16F1824-E/ST | PIC16F18425-E/ST |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-pin TSSOP | 14-pin SOIC | 14-pin TSSOP | 14-pin TSSOP | 14-pin TSSOP |
| Flash Memory | 7 KB | 7 KB | 7 KB | 4 KB (-43%) | 14 KB (+100%) |
| ADC Resolution | 12-bit ADCC | 12-bit ADCC | 10-bit ADC (-17%) | 10-bit ADC (-17%) | 12-bit ADCC |
| Complementary Waveform Generator | Yes | Yes | No | No | Yes |
| DAC | 5-bit DAC | 5-bit DAC | No | No | 5-bit DAC |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Temperature Grade | -40C to +125C (Industrial) | -40C to +125C (Industrial) | -40C to +125C (Industrial) | -40C to +125C (Industrial) | -40C to +125C (Industrial) |
| Approx. Unit Price (qty 1000) | $0.81 | $0.85 | $0.78 | $0.72 | $0.95 |
Key Differentiators
- 12-bit ADCC with hardware oversampling and computation (vs PIC16F18324-E/ST)
- Complementary Waveform Generator (CWG) integrated (vs PIC16F18324-E/ST)
- 5-bit DAC plus 12-bit ADCC and two comparators (vs PIC16F1824-E/ST)
Design Notes
The PIC16F18424-E/ST supports 2.5V to 5.5V operation, allowing direct connection to 3.3V or 5V rails without level shifters. Place a 100nF decoupling capacitor as close as possible to the VDD pin (pin 12) and a bulk capacitor of at least 1uF at the MCU power rail. For battery-powered designs, use the eXtreme Low-Power (XLP) sleep modes and wake the device via ADC threshold interrupt, comparator, or RTCC to keep average current below 10uA in most sensor applications.
When laying out the TSSOP-14 footprint, follow Microchip's land pattern recommendations in the package specification document; the 0.65mm pitch pads require 0.30mm wide traces between pads to maintain solder mask dams. Route the ICSP/ICD signals (ICSPCLK/ICSPDAT on RB6/RB7) to a 2x3 or 1x6 header for in-circuit programming and debugging - reserve 5mm of board space near the MCU for the connector. Keep the MCLR/VPP line short and place the 10kohm pull-up and 100nF decoupling capacitor within 5mm of pin 4 to ensure reliable reset behavior.
Do not leave the MCLR pin floating - a floating MCLR can cause intermittent resets in noisy environments; always include the recommended 10kohm pull-up to VDD. Configure unused I/O pins as outputs low (never leave them as inputs floating) to avoid excess current draw from the input buffer. When migrating from PIC16F1824 firmware, verify PPS assignments because the 18424 peripheral mapping differs from older generations. Always read the configuration word bits in code to confirm oscillator and watchdog settings after reset.
Compliance Information
RoHS and REACH compliant per Microchip product page. Standard -E suffix is industrial grade (-40C to +125C) but not AEC-Q100 qualified; for AEC-Q100 automotive use, source PIC16F184xx variants with -VAO suffix.
