PIC16F18424T-I/ST - 8-Bit 32MHz 7KB Flash MCU 14-TSSOP | Microchip
MPN: PIC16F18424T-I/ST ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.27 | $12.70 |
| 100 | $1.05 | $105.00 |
| 500 | $0.92 | $460.00 |
| 1,000 | $0.81 | $810.00 |
PIC16F18424T-I/ST Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash), data memory (RAM), and peripheral interfaces such as timers, ADC, communication ports, and GPIO into one package. The PIC16F18424 sits in the broader hierarchy of 8-bit microcontroller -> PIC16 family -> mid-range PIC architecture -> embedded computing device, optimized for low-power and general-purpose control. Its 14-pin form factor targets compact, low-pin-count designs that still demand modern analog and connectivity features.
Key features include 7 KB Flash, 512 B RAM, two PWMs, a 12-bit ADC with Computation (ADCC), a 5-bit DAC, a comparator, a Complementary Waveform Generator (CWG), and communication peripherals supporting EUSART, SPI, and I2C. The device operates from 1.8 V to 5.5 V, supports up to 32 MHz internal oscillator, and includes up to 12 I/O pins depending on package variant. On-chip peripherals execute independently of the CPU via CIPs, offloading signal generation, conversion, and timing tasks for deterministic, low-latency response.
The PIC16F18424T-I/ST uses a RISC-based mid-range core with a 14-bit instruction word and single-cycle execution for most instructions, delivering 32 MHz performance at very low power. XLP technology enables nanoWatt sleep currents in the sub-100 nA range with retention, while integrated peripherals such as ADCC, CWG, and configurable logic cells operate without waking the core. The TSSOP-14 package offers an industry-standard 0.65 mm pitch 14-pin surface-mount footprint.
Typical applications include consumer appliance control, IoT sensor nodes, battery-powered handheld instruments, LED lighting controllers, and automotive body/auxiliary modules where FuSa-ready firmware libraries assist functional-safety compliance. The combination of small package size and rich analog/digital integration suits space-constrained designs that need precise sensing and local actuation in a single chip.
When designing with this device, prioritize proper decoupling (100 nF ceramic close to VDD) and confirm the ICSP/PGD/PGC pins are routed to a programming header for in-circuit programming. Designers should also verify that the chosen 14-pin variant exposes the required peripheral pins, since smaller packages multiplex functions onto shared I/O.
This page combines verified distributor pricing, drop-in pin-compatible alternatives, and design notes not found in the manufacturer datasheet, giving procurement and engineering teams a complete decision-making view for the PIC16F18424T-I/ST in one place.
Drop-in alternatives for PIC16F18424T-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 PIC16F18424T-I/ST (same form factor and footprint) — differing in ADC, Program Memory (Flash), Operating Temperature, Package, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18424-I/ST
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18424-E/ST
✅ Drop-In✓ In Stock
$0.81 / Unit
View Datasheet →PIC16F18325-I/ST
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.16 / Unit
View Datasheet →PIC16F18324T-E/STVAO
✅ Drop-In✓ In Stock
$1.22 / Unit
View Datasheet →PIC16F1824T-I/ST
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18424T-I/ST Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit (mid-range, 14-bit instruction) |
| Family | PIC16(L)F184xx (PIC16F18424) |
| Max CPU Speed | 32 MHz |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data RAM | 512 B |
| Operating Voltage (VDD) | 1.8 V to 5.5 V |
| Package | 14-TSSOP (ST), 0.65 mm pitch |
| Supply Form | Tape & Reel (T suffix) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| ADC | 12-bit ADCC (ADC with Computation) |
| DAC | 5-bit DAC |
| PWM Channels | 2 |
| Comparators | 1 |
| CWG | Complementary Waveform Generator |
| Communication | EUSART, SPI, I2C |
| Low-Power Technology | XLP (eXtreme Low-Power) |
| Functional Safety | FuSa-ready (functional safety support) |
| RoHS Status | Compliant |
PIC16F18424T-I/ST Pin Configuration
| Pin 1 | RA5 — I/O port A bit 5 / ICSPDAT |
| Pin 2 | RA4 — I/O port A bit 4 |
| Pin 3 | RA3/MCLR — I/O port A bit 3 / Master Clear (reset) |
| Pin 4 | RA2 — I/O port A bit 2 |
| Pin 5 | RA1 — I/O port A bit 1 / ICSPCLK |
| Pin 6 | RA0 — I/O port A bit 0 |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA7 — I/O port A bit 7 |
| Pin 9 | RA6 — I/O port A bit 6 |
| Pin 10 | RC0 — I/O port C bit 0 |
| Pin 11 | RC1 — I/O port C bit 1 |
| Pin 12 | RC2 — I/O port C bit 2 |
| Pin 13 | RC3 — I/O port C bit 3 |
| Pin 14 | VDD — Positive power supply |
Typical Applications
PIC16F18424T-I/ST is suitable for 6 applications: Battery-Powered IoT Sensor Node, Consumer Appliance Control, Handheld Measurement Instrument, LED Lighting Controller, Automotive Body and Auxiliary Module, Industrial Sensor Transmitter.
Battery-Powered IoT Sensor Node
The PIC16F18424T-I/ST is well suited for wireless IoT sensor nodes because its XLP technology delivers nanoWatt sleep currents below 100 nA and Core Independent Peripherals (CIPs) execute sensor reads without waking the CPU. The 12-bit ADCC provides 12 channels of precision analog measurement for temperature, humidity, and battery monitoring, while the TSSOP-14 form factor fits space-constrained coin-cell housings. Powered from a 3 V CR2032, the MCU can run years of service life by sleeping between sensor reads and transmitting bursts via SPI to an attached radio such as the MRF24J40. Compared with discrete low-power timers, integrating ADCC + CWG + EUSART on one chip reduces external components and BOM cost.
Recommended
Consumer Appliance Control
In consumer appliance control panels the PIC16F18424T-I/ST drives LED indicators, reads capacitive touch buttons via the mTouch peripheral, and times motor actuation through its 2 PWM channels and CWG. The 14-pin TSSOP footprint leaves enough I/O for a UART link to a main appliance controller plus a triac drive for AC loads, while 7 KB Flash accommodates state-machine firmware with fault handling. With FuSa support libraries, designs targeting IEC 60730 household appliance safety class B can reuse Microchip's pre-certified firmware building blocks to reduce certification effort. The 1.8-5.5 V VDD range allows direct connection to rectified 5 V rails without separate regulation.
Recommended
Handheld Measurement Instrument
The PIC16F18424T-I/ST is a strong choice for handheld digital multimeters and portable measurement tools because its 12-bit ADCC offers accurate sensor digitization, the integrated 5-bit DAC supports auto-zeroing and reference generation, and the CWG generates precision drive waveforms for excitation. The TSSOP-14 package mounts on a compact main board beside an LCD, and 512 B RAM is enough for real-time RMS calculations and calibration tables. Its low sleep current enables weeks of standby on two AA cells, while functional safety libraries simplify designs targeting handheld instrument compliance. SPI/I2C connectivity makes it easy to add an external flash for data logging.
Recommended
LED Lighting Controller
For LED lighting controllers the PIC16F18424T-I/ST delivers smooth dimming via its two PWMs and CWG, while the 12-bit ADCC reads ambient light sensors and potentiometer inputs. The TSSOP-14 footprint fits inside small GU10 or MR16 bulb driver boards, and the 7 KB Flash accommodates dimming curves, color-mixing algorithms, and DALI or 0-10 V dimming protocol stacks. Compared with fixed-function LED driver ICs, this MCU adds programmability for tunable-white and circadian-rhythm features. XLP sleep modes keep standby power below EU ecodesign limits.
Recommended
Automotive Body and Auxiliary Module
The PIC16F18424T-I/ST supports automotive body and auxiliary control functions such as interior lighting, seat-position memory, mirror adjust, and HVAC blend-door actuators where its EUSART, SPI/I2C, PWM, and 12-bit ADCC meet the I/O and signal-quality needs in one chip. With FuSa firmware libraries available from Microchip, the device eases compliance with ISO 26262 ASIL-aware system-level design for non-safety-critical body ECUs, while its TSSOP-14 footprint fits compact wiring-harness modules. The -40 C to +85 C industrial temperature range covers most cabin and door-module locations; for under-hood use select the -E extended temperature variants.
Recommended
Industrial Sensor Transmitter
The PIC16F18424T-I/ST fits 4-20 mA industrial sensor transmitters that digitize a bridge or thermistor with the 12-bit ADCC, linearize the result, and output a current-loop signal using the integrated DAC plus an external op-amp. The TSSOP-14 package fits inside a small head-mount enclosure, and 512 B RAM plus 7 KB Flash handle linearization tables and HART or IO-Link communication stacks. XLP sleep modes between conversions reduce loop power, while SPI/I2C enable an external EEPROM for calibration data and a UART for diagnostics. Compared with all-in-one sensor transmitter ASICs, this MCU offers programming flexibility for custom sensor curves.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18424T-I/ST — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18424-I/ST | PIC16F18424-E/ST | PIC16F18325-I/ST | PIC16F18324T-E/STVAO | PIC16F1824T-I/ST |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-TSSOP (ST) | 14-TSSOP (ST) - same | 14-TSSOP (ST) - same | 14-TSSOP (ST) - same | 14-TSSOP (ST) - same | 14-TSSOP (ST) - same |
| Core / Max Clock | 8-bit PIC / 32 MHz | 8-bit PIC / 32 MHz | 8-bit PIC / 32 MHz | 8-bit PIC / 32 MHz | 8-bit PIC / 32 MHz | 8-bit PIC / 32 MHz |
| Flash | 7 KB | 7 KB | 7 KB | 14 KB | 7 KB | 7 KB |
| RAM | 512 B | 512 B | 512 B | 1 KB | 512 B | 256 B |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Temperature Range | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C |
| ADC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 10-bit ADC | 10-bit ADC | 10-bit ADC |
| Functional Safety (FuSa) | Yes | Yes | Yes | No | No | No |
Key Differentiators
- Functional Safety (FuSa) firmware library support (vs PIC16F1824T-I/ST)
- Upgraded 12-bit ADCC vs older 10-bit ADC (vs PIC16F1824T-I/ST)
- Larger RAM (512 B vs 256 B) (vs PIC16F1824T-I/ST)
Design Notes
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 14) and a bulk capacitor (>= 1 uF) on the same supply trace to suppress switching transients during PWM edge transitions. For battery-powered designs using the XLP sleep modes, route the MCLR pull-up to VDD through a 10 kohm resistor and ensure the ICSPDAT/ICSPCLK lines are not pulled low during deep sleep, which could wake the device unintentionally.
The TSSOP-14 package has a 0.65 mm pitch that requires careful PCB layout: use 0.30 mm wide traces between pads and follow IPC-7351 land-pattern guidelines for TSSOP-14 with 0.45 mm wide pads and 0.30 mm wide solder mask openings. Keep analog signals (ADCC inputs) routed away from PWM and digital switching traces to minimize coupling; place a guard ring around sensitive analog pins tied to a quiet ground.
Do not leave the MCLR pin floating - it must be tied to VDD through a 10 kohm resistor (or to the output of a supervisor) to ensure reliable reset behavior at power-up. When migrating from PIC16F1824 firmware to PIC16F18424, the ADC registers differ (12-bit ADCC vs 10-bit ADC), so configuration bit changes are required. Avoid exceeding 5.5 V on any I/O pin even briefly, as the absolute maximum ratings do not allow transient overshoot without risking latch-up.
When using the EUSART at high baud rates (>= 115200), add a 100 ohm series resistor on the TX line to dampen reflections if the trace exceeds 50 mm or connects through a connector. For SPI buses running above 4 MHz, keep traces short and length-matched between SCK, MOSI, and MISO; place a 10 kohm pull-up on CS to prevent accidental selection during MCU reset.
Compliance Information
RoHS and REACH compliant per Microchip product page. Standard industrial grade; AEC-Q100 automotive grade requires selecting VAO suffix variants such as PIC16F18324T-E/STVAO from the same family.
