PIC18F24Q10T-I/STX - 64MHz 8-bit MCU 16KB Flash 28-VQFN | Microchip
MPN: PIC18F24Q10T-I/STX ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.05 | $2.05 |
| 10 | $1.85 | $18.50 |
| 100 | $1.66 | $166.00 |
| 500 | $1.49 | $745.00 |
| 1,000 | $1.35 | $1,350.00 |
PIC18F24Q10T-I/STX Overview
A PIC microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM/EEPROM) and configurable peripherals such as ADC, PWM, timers and communication interfaces. PIC18 is Microchip's 8-bit Harvard-architecture family tuned for low power (XLP) and rich peripheral integration; the Q10 sub-family adds intelligent analog and CIPs. Within the broader taxonomy, an MCU sits at the intersection of microprocessors and embedded controllers, enabling firmware-driven sensing, actuation and communication in products ranging from sensor nodes to appliance motor control.
Key features include 1.8 V to 5.5 V single-supply operation (5 V operation enhances noise immunity), ADC2 with Capacitive Voltage Divider support for touch sensing, configurable logic cells (CLC), zero-cross detect and a peripheral pin select (PPS) that remaps digital functions to many I/O. The 64 MHz internal oscillator and 4x PLL eliminate external crystals in many designs, while the 28-VQFN 4x4 mm footprint suits compact PCBs such as wearables, IoT nodes and sensor hubs.
Architecturally, the PIC18F24Q10 implements a modified Harvard core with a 16-bit instruction word, hardware multiplier and a vectored interrupt controller. ADC2 automates averaging, oversampling and threshold comparison, offloading signal conditioning from the CPU; CIPs like CLC, NCO and PWM operate autonomously, which reduces latency in real-time loops. Functional Safety (FuSa) documentation and diagnostics support safety-related designs per IEC 61508.
Typical applications include capacitive touch user interfaces, IoT sensor nodes, low-power remote controls, BLDC/PMSM motor control (with companion gate drivers), HVAC/building automation and small medical/wellness devices. The wide 1.8-5.5 V supply range is convenient for direct battery or USB-powered designs.
When designing, always populate the ICSPDAT/ICSPCLK pins for in-circuit serial programming and reserve a clear path to the MCLR pin for in-field firmware updates. Decouple VDD with at least 100 nF plus 1 uF ceramics close to the package, and keep ADC traces short to preserve the 10-bit noise budget.
This page synthesizes distributor pricing, drop-in alternatives and practical design notes not available in the manufacturer datasheet alone, optimized for engineers and AI-powered component search.
Drop-in alternatives for PIC18F24Q10T-I/STX — 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 PIC18F24Q10T-I/STX (same form factor and footprint) — differing in ADC, Operating Temperature, Core Architecture, Program Memory (Flash), Comparators.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F24Q10-I/STX
✅ Drop-In✓ In Stock
$1.45 / Unit
View Datasheet →PIC18F25Q10T-I/STX
✅ Drop-In✓ In Stock
$0.86 / Unit
View Datasheet →PIC18F24Q10T-I/SO
✅ Drop-In✓ In Stock
$1.45 / Unit
View Datasheet →PIC18F24K42T-I/MV
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.1 / Unit
View Datasheet →PIC18F24Q10T-I/STX
✅ Drop-In✓ In Stock
$1.35 / Unit
View Datasheet →PIC18F24Q10T-I/STX Maximum Ratings & Electrical Characteristics
| Product Family | PIC18 XLP Q-series |
| Core Architecture | 8-bit PIC18 Harvard |
| Maximum CPU Speed | 64 MHz (16 MIPS) |
| Program Memory (Flash) | 16 KB |
| Data Memory (SRAM) | 2 KB |
| EEPROM | 256 bytes |
| I/O Pins | 25 |
| ADC | 10-bit ADC with Computation (ADC2) |
| DAC | 5-bit DAC |
| Comparators | Yes |
| PWM | 16-bit PWM |
| Capture/Compare/PWM (CCP) | Yes |
| Windowed Watchdog Timer (WWDT) | Yes |
| Supply Voltage (VDD) | 1.8 V to 5.5 V |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 28-pin VQFN (4x4 mm) |
| Core Independent Peripherals (CIP) | CLC, NCO, CWG, DSM |
| Functional Safety (FuSa) | Documented |
| RoHS Status | Compliant |
PIC18F24Q10T-I/STX Pin Configuration
| Pin 1 | VDD — Positive supply voltage (1.8 V to 5.5 V) |
| Pin 2 | RA5 — Bidirectional I/O with ADC and PPS |
| Pin 3 | RA4 — Bidirectional I/O with ADC and PPS |
| Pin 4 | RA3 — Bidirectional I/O with ADC and PPS |
| Pin 5 | RC5 — Bidirectional I/O with PPS |
| Pin 6 | RC4 — Bidirectional I/O with PPS |
| Pin 7 | RC3 — Bidirectional I/O / SCL with PPS |
| Pin 8 | RC6 — Bidirectional I/O / TX with PPS |
| Pin 9 | RC7 — Bidirectional I/O / RX with PPS |
| Pin 10 | RB7 — Bidirectional I/O / ICSPDAT |
| Pin 11 | RB6 — Bidirectional I/O / ICSPCLK |
| Pin 12 | RB5 — Bidirectional I/O with ADC and PPS |
| Pin 13 | RB4 — Bidirectional I/O with ADC and PPS |
| Pin 14 | VSS — Ground reference |
| Pin 15 | RA2 — Bidirectional I/O with ADC and PPS |
| Pin 16 | RA1 — Bidirectional I/O with ADC and PPS |
| Pin 17 | RA0 — Bidirectional I/O with ADC and PPS |
| Pin 18 | RC0 — Bidirectional I/O with PPS |
| Pin 19 | RC1 — Bidirectional I/O with PPS |
| Pin 20 | RC2 — Bidirectional I/O / SDA with PPS |
| Pin 21 | RB3 — Bidirectional I/O with ADC and PPS |
| Pin 22 | RB2 — Bidirectional I/O with ADC and PPS |
| Pin 23 | RB1 — Bidirectional I/O with ADC and PPS |
| Pin 24 | RB0 — Bidirectional I/O / interrupt with PPS |
| Pin 25 | RA7 — Bidirectional I/O / CLKIN with PPS |
| Pin 26 | RA6 — Bidirectional I/O / CLKOUT with PPS |
| Pin 27 | ICSPCLK — In-circuit serial programming clock (shared with RB6) |
| Pin 28 | ICSPDAT — In-circuit serial programming data (shared with RB7) |
Typical Applications
PIC18F24Q10T-I/STX is suitable for 7 applications: Capacitive Touch User Interface, IoT Sensor Node, Low-Power Remote Control, BLDC / PMSM Motor Control, HVAC / Building Automation, Small Medical / Wellness Device, Industrial Sensor Hub / Edge Node.
Capacitive Touch User Interface
The PIC18F24Q10T-I/STX is ideal for capacitive-touch keypads, sliders and trackpads thanks to its 10-bit ADC2 with built-in Capacitive Voltage Divider (CVD) automation. CVD offloads the charge/measurement cycles from firmware, so the CPU only handles thresholding, while the 16 MIPS core drives debouncing and gesture recognition in real time. With up to 25 I/O, a single chip can scan 8-12 electrodes and a few RGB LEDs. The 1.8-5.5 V supply lets designers power directly from a single-cell Li-ion or 5 V USB rail, and the 28-VQFN 4x4 mm footprint suits small front-panel PCBs.
Recommended
IoT Sensor Node
For battery-powered IoT sensor nodes, the PIC18F24Q10T-I/STX combines eXtreme Low Power (XLP) sleep modes below 50 nA with a 64 MHz core that wakes on peripheral triggers such as ADC2, comparator or RTCC alarm. The peripheral pin select (PPS) lets designers route I2C, SPI and UART to almost any I/O, simplifying PCB routing in tight enclosures. ADC2 oversampling and hardware averaging reduce sensor noise without CPU overhead, while 16 KB Flash accommodates TLS-style stacks or LoRaWAN/Sigfox MAC libraries. The 28-VQFN 4x4 mm footprint fits coin-cell sensor tags.
Recommended
Low-Power Remote Control
The PIC18F24Q10T-I/STX is well-suited for handheld IR/RF remote controls because of its sub-uA sleep current, fast wake-up from CLC/NCO triggers and on-chip comparators that demodulate IR envelopes directly. With 16-bit PWM and 5-bit DAC, the same MCU can generate IR carrier or RF modulation while reading a capacitive-touch keypad. The 5 V tolerant I/O accommodates legacy IR-LED drive circuits and 3.3 V RF ICs simultaneously. The 28-VQFN 4x4 mm package enables very thin remote enclosures, and the 16 KB Flash holds multiple protocol databases.
Recommended
BLDC / PMSM Motor Control
For sensorless BLDC or PMSM motor control, the PIC18F24Q10T-I/STX provides 16-bit PWM, configurable logic cells (CLC), complementary waveform generator (CWG) and zero-cross detect that together implement field-oriented control without external logic. ADC2 with hardware oversampling captures BEMF voltages cleanly at low RPM, and the 64 MHz core executes vector rotation math in real time. With 16 KB Flash and 25 I/O, the MCU drives a 3-phase gate driver like the MCP8021 or MCP8026 from the same PCB. The wide 1.8-5.5 V supply simplifies start from depleted battery packs.
Recommended
HVAC / Building Automation
In HVAC controllers and building-automation nodes, the PIC18F24Q10T-I/STX integrates 5 V analog I/O with 10-bit ADC2 for thermistor, humidity and pressure sensors, eliminating signal-conditioning ICs. CLC and NCO support standalone modulation for triac-fired heater elements or damper actuators. UART/SPI/I2C plus PPS connect to BACnet/Modbus transceivers, while WWDT and FuSa documentation assist safety-related designs per IEC 61508. The 28-VQFN 4x4 mm footprint fits smart-thermostat main boards and VAV box controllers.
Recommended
Small Medical / Wellness Device
The PIC18F24Q10T-I/STX is appropriate for battery-powered medical and wellness devices such as pulse oximeters, smart thermometers and pill dispensers. Its low-noise 10-bit ADC2 captures bioelectric signals with 5 V rails, while CLC implements comparator-based heart-rate detection without CPU wake-up. Core Independent Peripherals execute safety interlocks in hardware, and the 256-byte EEPROM stores calibration and audit logs reliably. The compact 28-VQFN package and Microchip's longevity program support long product life cycles common in regulated medical markets.
Recommended
Industrial Sensor Hub / Edge Node
For industrial 4-20 mA or 0-10 V sensor hubs, the PIC18F24Q10T-I/STX combines 5 V analog tolerance with ADC2 oversampling for 12-bit effective resolution, plus 5-bit DAC for analog loop power. CLC implements HART-style modulation while UART bridges to wireless gateways. PPS lets engineers route UART and SPI to convenient PCB locations, and the 28-VQFN 4x4 mm package fits into DIN-rail or panel-mount enclosures. CIPs enable deterministic response times below 10 us for closed-loop control loops on small actuators.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F24Q10T-I/STX — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F24Q10-I/STX | PIC18F25Q10T-I/STX | PIC18F24K42T-I/MV |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-VQFN (4x4 mm) | 28-VQFN (4x4 mm) | 28-VQFN (4x4 mm) | 28-VQFN (4x4 mm MV) |
| Maximum CPU Speed | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 64 MIPS |
| Flash Memory | 16 KB | 16 KB | 32 KB | 16 KB |
| SRAM | 2 KB | 2 KB | 2.5 KB | 2 KB |
| I/O Pins | 25 | 25 | 25 | 25 |
| ADC | 10-bit ADC2 with CVD | 10-bit ADC2 with CVD | 10-bit ADC2 with CVD | 12-bit ADC2 with CVD |
| 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 |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Capacitive Voltage Divider (CVD) integrated into ADC2 (vs PIC18F24K42T-I/MV)
- Functional Safety (FuSa) documentation (vs PIC18F24K42T-I/MV)
- Single 5 V supply with 1.8 V operation (vs PIC18F25Q10T-I/STX)
Design Notes
Place a 100 nF X7R ceramic in parallel with a 1 uF X5R ceramic on each VDD/AVDD pin, located within 5 mm of the package. The PIC18F24Q10T-I/STX ADC2 can be sensitive to VDD ripple above 50 mV; for 5 V industrial designs add a ferrite bead between VDD and AVDD to clean digital switching noise from the analog rail. Use bulk capacitance sized to supply peak ADC burst currents of approximately 2 mA.
Keep the ICSPDAT (RB7) and ICSPCLK (RB6) traces short (<25 mm) and route away from switching nodes such as PWM outputs. Reserve the MCLR pin path with a 10 kohm pull-up to VDD and a 100 nF cap to ground to avoid in-circuit programming failures. For capacitive-touch layouts, guard all touch electrodes with a grounded trace pattern and avoid crossing adjacent touch signals. The exposed pad on the 28-VQFN should be soldered to a copper pour connected to VSS for thermal dissipation and ground return.
Do not skip configuration of the peripheral pin select (PPS) registers - the default PPS mapping after reset locks most digital peripherals to fixed pins. Always clear the appropriate LOCK bit sequence before changing PPS assignments. The ADC2 channel selection requires the corresponding TRIS bit set to input; otherwise the ADC reads stuck-high. For in-field firmware updates via ICSP, ensure the LVP bit (CONFIG5L) is set if low-voltage programming is desired, otherwise high-voltage (12 V) MCLR mode is required.
Estimated: at maximum 64 MHz and 5.5 V, the PIC18F24Q10T-I/STX draws approximately 12 mA active and below 1 uA in XLP sleep. The 28-VQFN (4x4) thermal resistance is approximately 50 C/W on a 1 oz 4-layer JEDEC test board, so worst-case temperature rise at 66 mW is only 3 C above ambient - no heatsink is required. However, in sealed IP67 enclosures with no airflow, derate ambient by 10 C to maintain margin.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial temperature grade -40C to +85C. Functional Safety documentation available per IEC 61508. AEC-Q100 not applicable - this is an industrial-grade MCU.
