PIC18F24Q10-I/STX - 16KB Flash 8-bit MCU, 28-VQFN | Microchip
MPN: PIC18F24Q10-I/STX ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.65 | $2.65 |
| 10 | $2.38 | $23.80 |
| 100 | $1.92 | $192.00 |
| 500 | $1.65 | $825.00 |
| 1,000 | $1.45 | $1,450.00 |
PIC18F24Q10-I/STX Overview
A PIC microcontroller (Programmable Interface Controller) is a compact embedded processor built around a Harvard-architecture RISC core with on-chip Flash, RAM, and peripherals (ADC, PWM, timers, communication modules). PIC18 devices sit in Microchip's high-performance 8-bit tier, above baseline PIC10/12/16 parts, and below the 16-bit dsPIC33 and 32-bit PIC32 families. The PIC18-Q10 sub-family adds Core Independent Peripherals (CIPs), CLCs, and Functional Safety (FuSa) features, making it suitable for safety-critical and low-power designs.
Key specifications include 16 KB Flash (16K x 8), 2 KB SRAM, 256 bytes EEPROM, 25 digital I/O pins, a 10-bit ADC with Computation (ADCC), a 5-bit DAC, comparators, a 16-bit PWM, CCP modules, and a Windowed Watchdog Timer (WWDT). The device operates from 2.3V to 5.5V and supports XLP™ (eXtreme Low Power) sleep currents. The 28-VQFN package enables compact PCB layouts suitable for space-constrained sensor nodes.
The PIC18F24Q10 uses a Harvard RISC core with a 16-bit instruction word and 8-bit data path, providing deterministic interrupt latency and predictable execution. The integrated CIPs (CLC, NCO, DSM, ZCD) allow complex signal generation and conditioning without CPU intervention, reducing firmware complexity and power consumption.
Typical applications include IoT sensor nodes, motor control, LED lighting, home appliances, and industrial automation. The wide 5V tolerance and integrated analog make it well suited for noisy industrial environments where 3.3V-only MCUs are marginal.
When designing with this MCU, ensure the ICD programming/debug header matches the assigned pins and provide adequate decoupling (100 nF + bulk) near VDD. The internal 32 MHz HFINTOSC supports operation without an external crystal, reducing BOM cost for cost-sensitive designs.
This page synthesizes distributor pricing, drop-in package alternatives, and practical design notes not found in the bare manufacturer datasheet, including parametric comparison, AEC-Q100 guidance, and FAQ entries optimized for AI search citation.
Drop-in alternatives for PIC18F24Q10-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 PIC18F24Q10-I/STX (same form factor and footprint) — differing in ADC, Package, Operating Temperature, Program Memory (Flash), DAC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F25Q10-I/STX
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F24Q10-I/SO
✅ Drop-In✓ In Stock
$1.08 / Unit
View Datasheet →PIC18F24K42T-I/SS
✅ Drop-In✓ In Stock
$1.47 / Unit
View Datasheet →PIC18F24K40-I/ML
✅ Drop-In✓ In Stock
$1.66 / Unit
View Datasheet →PIC18F24K50-I/ML
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →PIC18F24Q10-I/STX Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC |
| Family | PIC18-Q10 (PIC18F24/25Q10) |
| Program Memory (Flash) | 16 KB (16K x 8) |
| Data SRAM | 2 KB |
| EEPROM | 256 bytes |
| Maximum CPU Frequency | 64 MHz |
| Operating Voltage | 2.3 V to 5.5 V |
| Digital I/O Pins | 25 |
| ADC | 10-bit with Computation (ADCC) |
| DAC | 5-bit |
| Comparators | Yes |
| PWM | 16-bit |
| Capture/Compare/PWM (CCP) | Yes |
| Watchdog Timer | Windowed WWDT |
| Package | 28-pin VQFN (4x4 mm) |
| Mounting Type | Surface Mount |
| Functional Safety | FuSa-ready (PIC18-Q10 family) |
| Low-Power Feature | XLP™ (eXtreme Low Power) |
| RoHS Status | Compliant |
| Operating Temperature | -40 °C to +85 °C (Industrial) |
PIC18F24Q10-I/STX Pin Configuration
| Pin 1 | RA5 — Port A bit 5 / general digital I/O |
| Pin 2 | RA4 — Port A bit 4 / general digital I/O |
| Pin 3 | RA3 — Port A bit 3 / general digital I/O |
| Pin 4 | RA2 — Port A bit 2 / general digital I/O |
| Pin 5 | RA1 — Port A bit 1 / general digital I/O |
| Pin 6 | RA0 — Port A bit 0 / general digital I/O |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA7 — Port A bit 7 / general digital I/O |
| Pin 9 | RA6 — Port A bit 6 / general digital I/O |
| Pin 10 | RC0 — Port C bit 0 / general digital I/O |
| Pin 11 | RC1 — Port C bit 1 / general digital I/O |
| Pin 12 | RC2 — Port C bit 2 / general digital I/O |
| Pin 13 | RC3 — Port C bit 3 / general digital I/O |
| Pin 14 | RC4 — Port C bit 4 / general digital I/O |
| Pin 15 | RC5 — Port C bit 5 / general digital I/O |
| Pin 16 | RC6 — Port C bit 6 / general digital I/O |
| Pin 17 | RC7 — Port C bit 7 / general digital I/O |
| Pin 18 | VSS — Ground (exposed pad) |
| Pin 19 | VDD — Positive supply voltage |
| Pin 20 | RB0 — Port B bit 0 / general digital I/O |
| Pin 21 | RB1 — Port B bit 1 / general digital I/O |
| Pin 22 | RB2 — Port B bit 2 / general digital I/O |
| Pin 23 | RB3 — Port B bit 3 / general digital I/O |
| Pin 24 | RB4 — Port B bit 4 / general digital I/O |
| Pin 25 | RB5 — Port B bit 5 / general digital I/O |
| Pin 26 | RB6 — Port B bit 6 / ICS PGC |
| Pin 27 | RB7 — Port B bit 7 / ICS PGD |
| Pin 28 | MCLR — Master clear / reset input |
Typical Applications
PIC18F24Q10-I/STX is suitable for 6 applications: IoT Sensor Nodes, Industrial Motor Control, LED Lighting and Dimming, Home Appliance Control, Automotive Body and Comfort Modules, Battery-Powered Wearable Devices.
IoT Sensor Nodes
The PIC18F24Q10-I/STX is well suited for battery-powered IoT sensor nodes due to its XLP low-power modes and integrated 10-bit ADCC for direct sensor digitization. The 16 KB Flash supports compact C/COL firmware stacks with drivers and small RTOS components, while 2 KB SRAM is adequate for protocol buffers (Modbus, MQTT-SN). Operating from 2.3 V to 5.5 V allows direct Li-ion or 3.3 V system rails without level shifting. The Core Independent Peripherals (CLC, NCO, DSM) enable event-driven wake-up and signal processing without CPU intervention, reducing average sleep current below typical wireless MCU baselines.
Recommended
Industrial Motor Control
The PIC18F24Q10's 16-bit PWM, fast 10-bit ADCC, and integrated comparators make it a strong fit for small BLDC and brushed-DC motor control in industrial drives. The 25 I/O pins can drive a discrete H-bridge with current sense, fault inputs, and Hall-effect feedback. The 64 MHz core delivers 16 MIPS, enabling closed-loop torque or speed control at typical 20 kHz PWM rates with comfortable compute margin. The 5V tolerance ensures reliable operation in electrically noisy industrial cabinets where 3.3V-only MCUs can suffer commutation glitches. The CIPs (CLC, NCO) support sensorless commutation timing without CPU load.
Recommended
LED Lighting and Dimming
The PIC18F24Q10 is ideal for commercial and architectural LED lighting due to its 16-bit PWM resolution (allowing >65,000 dimming steps for smooth logarithmic dimming curves), 5-bit DAC for setpoint generation, and CLCs for hardware-based color-mixing. The 5V tolerance supports direct connection to 24V LED driver rails with simple LDO regulators. The wide -40 to +85 °C operating range covers both indoor luminaires and outdoor street-lighting fixtures. The XLP sleep modes allow mains-powered fixtures to drop below 10 µA standby current, meeting ENERGY STAR standby requirements.
Recommended
Home Appliance Control
The PIC18F24Q10-I/STX suits home appliances such as washing machines, dishwashers, and HVAC blowers where 5V noise immunity, an integrated ADCC for temperature/pressure sensing, and the 16-bit PWM for motor or valve control are all required. The FuSa-ready PIC18-Q10 family simplifies functional-safety documentation for safety-related sub-systems (door locks, over-temperature cutoffs). The 25 I/O pins handle multi-zone HMI (LEDs, buttons, displays) without external I/O expanders. The Industrial temperature grade (-40 to +85 °C) covers appliance operating environments including unheated garages and basements.
Recommended
Automotive Body and Comfort Modules
While the PIC18F24Q10-I/STX is not AEC-Q100 qualified at the part level, it is widely used in non-safety automotive body applications such as seat controllers, mirror adjusters, ambient lighting, and HVAC flaps where cost is a primary concern. The 5V tolerance tolerates 12V battery transients after bulk filtering. The 16-bit PWM drives small DC motors or LED strings with smooth resolution. For AEC-Q100 grade-0/1 requirements, designers should select the PIC18F-K42 automotive variants, which share the same 28-pin footprint and a similar peripheral set.
Recommended
Battery-Powered Wearable Devices
The PIC18F24Q10's XLP (eXtreme Low Power) sleep modes and integrated ADCC make it suitable for wearable fitness bands, medical patches, and remote controls where sleep current dominates battery life. The compact 28-VQFN (4x4 mm) package fits small form factors. The 5-bit DAC drives small analog front-ends (e.g., galvanic skin response). The CLCs implement hardware debouncing and one-shot pulse generation, allowing the CPU to stay asleep longer. Designers should budget under 50 µA/MHz active current and sub-1 µA sleep current for year-long coin-cell operation.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F24Q10-I/STX — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F25Q10-I/STX | PIC18F24Q10-I/SO | PIC18F24K42T-I/SS | PIC18F24K40-I/ML | PIC18F24K50-I/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin VQFN (4x4 mm) | 28-pin VQFN (4x4 mm) - same | 28-pin SOIC (SO) - different package, same pinout | 28-pin SSOP (SS) - different package, same pinout | 28-pin QFN (ML) - same QFN family | 28-pin QFN (ML) - same QFN family |
| Program Memory (Flash) | 16 KB | 32 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Data SRAM | 2 KB | 2 KB | 2 KB | 2 KB | 1 KB | 2 KB |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 48 MHz |
| Operating Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| I/O Pins | 25 | 25 | 25 | 25 | 25 | 25 |
| ADC | 10-bit ADCC | 10-bit ADCC | 10-bit ADCC | 12-bit ADCC | 10-bit ADC | 10-bit ADC |
| USB Peripheral | No | No | No | No | No | Yes (USB 2.0 FS) |
| Functional Safety (FuSa) | Yes (PIC18-Q10) | Yes | Yes | Limited | No | No |
Key Differentiators
- Functional Safety (FuSa) support built into PIC18-Q10 family (vs PIC18F24K40-I/ML)
- 10-bit ADCC with computation offloads DSP from CPU (vs PIC18F24K40-I/ML)
- 5-bit DAC and 5-bit slope compensation (vs PIC18F24K42T-I/SS)
- Core Independent Peripherals (CIPs) include CLC, NCO, DSM (vs PIC18F24K50-I/ML)
Design Notes
Place a 100 nF ceramic decoupling capacitor as close as possible to each VDD pin (pin 19 and exposed pad) of the PIC18F24Q10-I/STX. Add a 10 µF bulk tantalum or ceramic capacitor near the MCU to supply transient current during ADC conversions and PWM edge transitions. The MCU's 5V tolerance is a major advantage, but decoupling quality still determines effective noise margin in industrial environments.
Route the MCLR pin (pin 28) with a short trace to a 10 kΩ pull-up resistor and a 100 nF capacitor to ground for proper reset behavior. Place the ICSPCLK/ICSPDAT pins (RB6/RB7) in a small debug header footprint so the PICkit 4 or ICD 4 can attach without board rework. Keep the 28-VQFN exposed pad soldered to a continuous ground plane to meet thermal dissipation requirements.
Do not enable the internal weak pull-ups on pins that drive high-current loads - the typical 20 µA pull-up is too weak for many sensor interfaces. When using the 10-bit ADCC, always connect unused analog channels as digital outputs or to AVSS rather than leaving them floating, because floating channels can inject charge into adjacent ADC channels and degrade conversion accuracy.
When routing SPI or I2C buses at speeds above 4 MHz, keep traces short and add 33 Ω series resistors near the MCU to dampen ringing. For PWM-controlled LED strings or motor drivers, place a 1 nF X7R bypass capacitor between the gate driver supply and ground within 5 mm of the driver IC. The PIC18-Q10 CLCs can debounce noisy inputs in hardware, eliminating firmware latency.
Estimated: At maximum CPU activity (64 MHz, all peripherals enabled), the PIC18F24Q10 in the 28-VQFN (4x4 mm) package typically dissipates about 30 mW, giving a junction temperature rise of roughly 10 °C above ambient on a 1-oz copper PCB with standard thermal vias. The 28-VQFN thermal pad is electrically tied to VSS - it must be soldered to a continuous ground plane for both electrical reference and thermal dissipation.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC18F-K42 automotive variants for AEC-Q100 grade requirements. Lead-free matte-tin plating per JEDEC J-STD-020 reflow profiles.
