PIC16F18424-I/ST - 8-bit MCU, 7KB Flash, 32MHz, 14-TSSOP | Microchip
MPN: PIC16F18424-I/ST ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.18 | $1.18 |
| 10 | $1.07 | $10.70 |
| 100 | $0.96 | $96.00 |
| 500 | $0.87 | $435.00 |
| 1,000 | $0.79 | $790.00 |
PIC16F18424-I/ST Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and peripheral IP into one package, optimized for deterministic real-time control rather than raw compute throughput. Within Microchip's portfolio, the PIC16F184xx family sits at the top of the PIC16 mid-range lineup and belongs to the broader 8-bit MCU category alongside AVR and 8051 architectures. These MCUs target general-purpose embedded designs where cost, power, and easy analog/digital integration matter more than MHz or MIPS.
Key features include 7KB (4K x 14) Flash, 256 bytes EEPROM, 512 bytes RAM, 12-bit ADCC, 5-bit DAC, 2x PWM with complementary outputs, CWG, Numerically Controlled Oscillator (NCO), CLC, and EUSART plus SPI/I2C. The XLP sleep currents reach down to the low nA range, making the part ideal for battery-powered sensing nodes. Functional Safety documentation aids IEC 61508 SIL capable system designs.
The device uses a 14-bit instruction word modified Harvard architecture with a hardware stack and interrupt controller, supported by MPLAB X IDE, XC8 compilers, and the MPLAB Code Configurator (MCC). The TSSOP-14 footprint keeps board area minimal while exposing all major peripherals.
Typical applications include IoT sensor nodes, battery-powered wearables, low-power wireless front-ends, consumer white goods, LED lighting controllers, and small motor control loops. The wide 1.8V-5.5V VDD range suits both 3.3V and 5V system rails.
When designing, place a 0.1uF decoupling capacitor within 5 mm of VDD, route MCLR through a 10 kohm pull-up, and leave the ICSPDAT/ICSPCLK pins accessible for in-circuit serial programming. The TSSOP thermal pad is not internally bonded; standard TSSOP-14 land pattern applies.
This page synthesizes distributor pricing, verified pin-compatible drop-in alternatives from the PIC16F183xx family, and practical design notes that go beyond the manufacturer datasheet.
Drop-in alternatives for PIC16F18424-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 PIC16F18424-I/ST (same form factor and footprint) — differing in Package, ADC, Program Memory (Flash), Operating Temperature, Comparators.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18424-I/SL
✅ Drop-In✓ In Stock
$0.83 / Unit
View Datasheet →PIC16F18325-I/ST
✅ Drop-In✓ In Stock
$1.16 / Unit
View Datasheet →PIC16F18324-I/SLVAO
✅ Drop-In✓ In Stock
$0.98 / Unit
View Datasheet →PIC16F18424-E/ST
✅ Drop-In✓ In Stock
$0.81 / Unit
View Datasheet →PIC16F18345-I/ST
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18444-I/ST
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18424-I/ST Maximum Ratings & Electrical Characteristics
| Family | PIC16(L)F184xx |
| Core | 8-bit PIC enhanced mid-range |
| Program Memory (Flash) | 7 KB (4K x 14) |
| Data EEPROM | 256 B |
| Data SRAM | 512 B |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage (VDD) | 1.8 V to 5.5 V |
| DAC | 5-bit DAC |
| PWM Modules | 2 (with complementary outputs) |
| Comparators | Yes |
| CWG / NCO / CLC | Yes |
| Communication | EUSART, SPI, I2C |
| XLP Sleep Current | Low-nA range |
| Operating Temperature (Industrial -I) | -40C to +85C |
| Package | 14-pin TSSOP (ST) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Pin Count | 14 |
PIC16F18424-I/ST Pin Configuration
| Pin 1 | VDD — Positive supply voltage (1.8V to 5.5V) |
| Pin 2 | RA5 — Bidirectional I/O / ICSPCLK programming clock |
| Pin 3 | RA4 — Bidirectional I/O / AN3 analog input |
| Pin 4 | MCLR/RA3 — Master Clear (reset, active low) or digital I/O |
| Pin 5 | RC5 — Bidirectional I/O / AN5 analog input |
| Pin 6 | RC4 — Bidirectional I/O / AN4 analog input |
| Pin 7 | RC3 — Bidirectional I/O / AN3 analog input |
| Pin 8 | RC2 — Bidirectional I/O / AN2 analog input |
| Pin 9 | RC1 — Bidirectional I/O / AN1 analog input |
| Pin 10 | RC0 — Bidirectional I/O / AN0 analog input / ICSPDAT programming data |
| Pin 11 | RA2 — Bidirectional I/O / AN2 analog input |
| Pin 12 | RA1 — Bidirectional I/O / ICSPCLK / AN1 analog input |
| Pin 13 | RA0 — Bidirectional I/O / AN0 analog input |
| Pin 14 | VSS — Ground reference |
Typical Applications
PIC16F18424-I/ST is suitable for 6 applications: IoT Battery-Powered Sensor Node, LED Lighting Controller, Small DC Motor Control, Consumer White Goods Keypad Interface, Portable Medical Wearable, Industrial Sensor Transmitter (4-20 mA).
IoT Battery-Powered Sensor Node
The PIC16F18424-I/ST fits IoT sensor nodes thanks to its XLP low-nA sleep currents, 1.8V-5.5V VDD range, and integrated 12-bit ADCC for accurate temperature, humidity, or voltage reads. Placed next to a low-power radio like the Microchip RN4870 via SPI or EUSART, the MCU wakes from sleep on a timer interrupt, takes a sensor reading, transmits, and returns to deep sleep - all under firmware control. With 7 KB Flash it accommodates small BLE beacon or LoRaWAN device drivers, and the TSSOP-14 footprint keeps the PCB under 10x10 mm for wearable form factors.
Recommended
LED Lighting Controller
The PIC16F18424-I/ST drives LED lighting controllers using its two PWM modules with complementary outputs and the 12-bit ADCC for ambient light feedback. The CWG (Complementary Waveform Generator) and CLC (Configurable Logic Cell) let designers build hysteretic buck or boost LED drivers without external analog ICs. The TSSOP-14 package and wide 1.8V-5.5V supply make it equally at home in 3.3V battery-powered lamps and 5V hard-wired fixtures, while XLP sleep currents below 1 uA extend battery life in portable luminaires.
Recommended
Small DC Motor Control
The PIC16F18424-I/ST handles small DC motor control loops using its 12-bit ADCC for back-EMF sensing, two PWMs for H-bridge drive, and CWG for hardware dead-band generation. The 32 MHz CPU gives 8 MIPS, more than enough for PI speed control at kilohertz update rates. The TSSOP-14 package exposes enough I/O for direction, brake, fault, and tachometer signals, while the 1.8V minimum VDD allows direct Li-ion or 2xAA battery operation. The XLP idle keeps standby current in the microamp range when the motor is parked.
Recommended
Consumer White Goods Keypad Interface
The PIC16F18424-I/ST runs consumer white-goods keypad interfaces thanks to its low cost, 32 MHz performance, and EUSART for main-board communication. The 12-bit ADCC reads resistive touch or matrix keypads, while the CWG generates buzzer tones for user feedback without extra hardware timers. Industrial -40C to +85C temperature rating tolerates appliance environments, and the TSSOP-14 footprint drops onto small UI sub-boards with minimal BOM cost.
Recommended
Portable Medical Wearable
The PIC16F18424-I/ST serves portable medical wearables with its XLP deep-sleep currents in the low-nA range, 12-bit ADCC for heart-rate or SpO2 sensor reads, and Functional Safety (FuSa) documentation that aids IEC 61508-capable designs. The TSSOP-14 form factor and 1.8V minimum supply suit coin-cell-powered patches and wristbands. With 7 KB Flash the device runs small biosignal processing routines while leaving headroom for over-the-air firmware updates.
Recommended
Industrial Sensor Transmitter (4-20 mA)
The PIC16F18424-I/ST is a strong fit for industrial 4-20 mA sensor transmitters because of its 12-bit ADCC accuracy, integrated 5-bit DAC for loop test/calibration, and EUSART for HART or RS-485 stacks. The industrial -40C to +85C rating covers process-plant environments, while the TSSOP-14 package keeps the BOM small enough for in-head transmitters. With XLP idle the MCU contributes negligible quiescent current to the 4-20 mA loop budget.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18424-I/ST — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18325-I/ST | PIC16F18424-E/ST | PIC16F18345-I/ST | PIC16F18444-I/ST | PIC16F18424-I/SL |
|---|---|---|---|---|---|---|
| Package | TSSOP-14 (ST) | TSSOP-14 (ST) | TSSOP-14 (ST) | TSSOP-14 (ST) | TSSOP-14 (ST) | SOIC-14 (SL) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 7 KB | 14 KB | 7 KB | 14 KB | 7 KB | 7 KB |
| ADC Resolution | 12-bit ADCC | 10-bit ADC | 12-bit ADCC | 10-bit ADC | 12-bit ADCC | 12-bit ADCC |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- 12-bit ADCC with computation vs 10-bit legacy ADC (vs PIC16F18324-I/SL)
- Functional Safety (FuSa) documentation included (vs PIC16F1827-I/P)
- Same TSSOP-14 footprint doubles Flash (vs PIC16F18325-I/ST)
Design Notes
Place a 0.1 uF decoupling capacitor within 5 mm of VDD (pin 1) and VSS (pin 14) on the PIC16F18424-I/ST. For noisy 5V rails add a 10 uF bulk capacitor near the IC. The XLP sleep current is lowest when peripherals are gated off in firmware before the SLEEP instruction; configure unused pins as outputs low to avoid floating-input leakage in battery-powered designs. Estimated: at 3.3V VDD with the CPU in SLEEP and ADCC disabled, typical quiescent is well under 1 uA per the Microchip datasheet DS40001867.
Route MCLR (pin 4) through a 10 kohm pull-up to VDD; if in-circuit serial programming is required, leave ICSPCLK and ICSPDAT accessible and avoid placing large copper pours or guard rings around these pins. The TSSOP-14 thermal pad is not internally bonded; use the standard JEDEC TSSOP-14 land pattern from the IPC-7351 library. Keep crystal traces short if you select an external HF oscillator, and route analog inputs (AN0-AN5) away from PWM or digital switching signals to minimize ADC crosstalk.
Do not exceed VDD of 5.5V on the PIC16F18424-I/ST, including transients during hot-plug or inrush. Avoid floating MCLR by tying it through a pull-up to VDD; a floating MCLR can cause unpredictable resets. When migrating firmware from PIC16F1824, double-check the PPS (Peripheral Pin Select) mapping because the PIC16F184xx family added new peripheral assignments. The 14-bit instruction Flash is word-addressed - configuration bits and ID locations must be set correctly before code can execute from external references.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial -I temperature grade (-40C to +85C). Functional Safety (FuSa) documentation is available separately from Microchip. Halogen-free status not explicitly stated in distributor data - left as unknown.
