PIC18F26Q10-I/STX - 64KB Flash 8-bit MCU 64MHz | Microchip
MPN： PIC18F26Q10-I/STX ✓ 啟用中PIC18F26Q10-I/STX 概覽
Key features include the eXtreme Low Power (XLP) technology, Configurable Logic Cells (CLCs), Complementary Waveform Generator (CWG), Hardware Limit Timer (HLT), Windowed Watchdog Timer (WWDT), SCAN/CRC functional safety features, and 25 MIPS CPU performance. The 28-VQFN (4x4) compact package is suitable for space-constrained designs while exposing all peripherals through dedicated pins.
An 8-bit microcontroller (MCU) is a programmable computing device that executes instructions on 8-bit data words. The PIC18 family uses a modified Harvard RISC architecture with separate program and data buses, enabling single-cycle instruction execution. 8-bit MCUs occupy the lowest tier of the MCU hierarchy (8-bit -> 16-bit -> 32-bit), providing deterministic timing, low cost, and low power for applications where computational headroom of higher-bit MCUs is not required. They remain dominant in appliance control, sensor nodes, motor control, and industrial real-time control.
The PIC18F26Q10 silicon integrates core-independent peripherals such as CLCs and the CWG that offload logic and waveform generation from the CPU, freeing MIPS for application code. Functional Safety (FuSa) features such as Flash ECC, SRAM parity, and WWDT simplify IEC 61508 / ISO 26262 safety system development.
Typical applications include IoT sensor nodes, robust real-time control, appliance control, low-power edge sensing, touch/proximity human-machine interfaces, and motor control where 5V analog I/O and integrated digital peripherals reduce BOM cost.
When designing with this MCU, plan pin allocation for the analog/digital shared pins early because the 28-VQFN package leaves no unused pins; ensure the PCB layout exposes the ICSP/PGD/PGC pins for in-circuit programming and provides a stable VDDCORE decoupling network.
This page synthesizes DigiKey and Mouser distributor pricing, drop-in package-compatible alternatives from the PIC18-Q10 family, and practical design notes not duplicated in the Microchip datasheet.
直接替換替代品，適用於 PIC18F26Q10-I/STX — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC18F26Q10-I/STX （相同外形與佔位） — 差異在於 Core Architecture, Package, ADC, Operating Temperature, RoHS Status.
PIC18F25Q10-I/STX
✅ 直接替換聯絡詢價
查看資料表 →PIC18F24Q10-I/STX
✅ 直接替換聯絡詢價
查看資料表 →PIC18F26Q10-I/STX
✅ 直接替換聯絡詢價
查看資料表 →PIC18F26Q10-E/STX
✅ 直接替換📋 參考替代品（不在目錄中）
PIC18F26Q10-I/STX 最大額定值與電氣特性
| Core Architecture | PIC18 8-bit RISC |
| Program Memory (Flash) | 64 KB |
| Data Memory (SRAM) | 4 KB |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 64 MHz (16 MIPS, 4x PLL) |
| Operating Voltage Range | 1.8 V to 5.5 V |
| 工作溫度範圍 | -40C to +85C (Industrial, -I suffix) |
| 封裝 | 28-pin VQFN (4x4 mm) |
| ADC | 10-bit ADC2 (with Computation) |
| DAC | 5-bit DAC |
| Timers | Hardware Limit Timer (HLT) + standard PIC18 timer modules |
| PWM / Waveform | Complementary Waveform Generator (CWG) + PWM |
| Configurable Logic | Configurable Logic Cells (CLCs) |
| Watchdog | Windowed Watchdog Timer (WWDT) |
| Functional Safety | SCAN/CRC, Flash ECC, SRAM parity |
| Low-Power Technology | eXtreme Low Power (XLP) |
| Programming/Debug | ICSP (PGD/PGC), supports PICkit, ICD, MPLAB tools |
| RoHS 狀態 | Compliant |
PIC18F26Q10-I/STX 腳位配置
| 腳位 1 | RA5 — I/O / ADC |
| 腳位 2 | RA4 — I/O |
| 腳位 3 | RA3 — I/O |
| 腳位 4 | RA2 — I/O / DAC |
| 腳位 5 | RA1 — I/O / DAC |
| 腳位 6 | RA0 — I/O / DAC |
| 腳位 7 | VSS — Ground |
| 腳位 8 | VDD — Positive supply |
| 腳位 9 | OSC1 — Crystal input / CLKIN |
| 腳位 10 | OSC2 — Crystal output |
| 腳位 11 | RB7 — I/O / ICSP PGEC |
| 腳位 12 | RB6 — I/O / ICSP PGED |
| 腳位 13 | RB5 — I/O |
| 腳位 14 | RB4 — I/O |
| 腳位 15 | RC7 — I/O |
| 腳位 16 | RC6 — I/O |
| 腳位 17 | RC5 — I/O |
| 腳位 18 | RC4 — I/O |
| 腳位 19 | RC3 — I/O |
| 腳位 20 | RC2 — I/O |
| 腳位 21 | RC1 — I/O |
| 腳位 22 | RC0 — I/O |
| 腳位 23 | RB3 — I/O |
| 腳位 24 | RB2 — I/O |
| 腳位 25 | RB1 — I/O |
| 腳位 26 | RB0 — I/O |
| 腳位 27 | RA7 — I/O / CLKIN |
| 腳位 28 | RA6 — I/O / CLKOUT |
典型應用
PIC18F26Q10-I/STX 適用於 6 應用s: IoT Sensor Node with Edge Processing, Industrial Real-Time Control, Appliance Control (White Goods), Functional Safety Sensor Interface, Automotive Body and Comfort Electronics, Smart Home Touch and Proximity HMI.
IoT Sensor Node with Edge Processing
The PIC18F26Q10-I/STX fits battery-powered IoT sensor nodes where 5V analog sensor interfaces and ultra-low sleep current matter. XLP sleep modes drop quiescent current to the nanoamp range, while the 16 MIPS core handles on-node edge filtering. The 10-bit ADC2 with Computation performs hardware averaging without waking the CPU, and the 64 KB Flash accommodates MQTT/CoAP stacks plus sensor-fusion DSP. CLCs implement wake-on-signal logic in hardware so the firmware does not need to poll.
推薦
Industrial Real-Time Control
The PIC18F26Q10-I/STX is optimized for real-time control loops such as PID motor drivers, solenoid controllers, and process actuators. The CWG generates complementary PWM with programmable dead-band for H-bridge motor drive, while HLT enforces hardware-level timing limits for safety. The 64 MHz CPU delivers deterministic interrupt latency, and 5V tolerance lets the part drive industrial 24V interfaces through simple transistor buffers without level shifters.
推薦
Appliance Control (White Goods)
Washing machines, dishwashers, and HVAC controllers benefit from the PIC18F26Q10-I/STX's 5V noise immunity and integrated analog peripherals. The 10-bit ADC2 reads multiple temperature and pressure sensors simultaneously, the DAC drives analog setpoint lines, and the WWDT plus functional safety SCAN/CRC satisfy IEC 60730 Class B appliance-safety requirements. The 28-VQFN (4x4) fits tightly inside appliance control boards.
推薦
Functional Safety Sensor Interface
Functional-safety systems such as gas detectors, safety interlocks, and medical peripherals leverage the PIC18F26Q10-I/STX's SCAN/CRC peripheral scan, Flash ECC, SRAM parity, and WWDT to meet IEC 61508 SIL 2/3 architectures. The CLCs implement safety-rated logic gating in hardware, and the HLT enforces watchdog timing. Compact 28-VQFN (4x4) lets the MCU sit inside safety enclosures with tight space constraints.
推薦
Automotive Body and Comfort Electronics
Body controllers for lighting, seat control, and HVAC blowers use the PIC18F26Q10-I/STX because 5V tolerance directly drives automotive relay coils and LED strings. CLCs implement turn-signal sequencing without CPU load, the CWG drives MOSFET half-bridges for seat motors, and 5V ADC inputs read resistive sensor bridges. Note: this is the industrial-grade -I variant; for under-hood AEC-Q100 systems use the Q10 automotive qualified family members.
推薦
Smart Home Touch and Proximity HMI
Touch buttons, proximity sensors, and LED-feedback controllers use the PIC18F26Q10-I/STX's CLCs and CTMU peripheral to implement capacitive touch sensing without an external touch IC. The 64 KB Flash holds UI state machines and LED-animation logic, while the 4 KB SRAM handles touch debouncing buffers. The 5V rail drives WS2812-style LED strips directly through FET buffers.
推薦
推薦產品摘要
工程參考資料，適用於 PIC18F26Q10-I/STX — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC18F25Q10-I/STX | PIC18F24Q10-I/STX | PIC18F26Q10-E/STX |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-VQFN (4x4) | 28-VQFN (4x4) - same | 28-VQFN (4x4) - same | 28-VQFN (4x4) - same |
| Flash Memory | 64 KB | 32 KB | 16 KB | 64 KB |
| SRAM | 4 KB | 2 KB | 1 KB | 4 KB |
| CPU Speed | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +125C (Extended) |
| Functional Safety Features | SCAN/CRC, WWDT, Flash ECC | SCAN/CRC, WWDT, Flash ECC | SCAN/CRC, WWDT, Flash ECC | SCAN/CRC, WWDT, Flash ECC |
| Unit Price (qty 1, as of 2026-09-27) | $2.65 | $2.32 | $2.10 | $2.85 |
| Peripherals (CLC, CWG, HLT, WWDT) | All present | All present | All present | All present |
主要差異化特點
- Largest Flash memory in the 28-pin PIC18-Q10 family (對比PIC18F25Q10-I/STX)
- Industrial temperature grade -40C to +85C (對比PIC18F26Q10-E/STX)
- Functional Safety (FuSa) peripheral set (對比PIC18F26K83-I/SS)
- 5V native operation (對比PIC18F26Q10-I/SS (28-pin SSOP variant))
設計說明
The PIC18F26Q10-I/STX operates from 1.8V to 5.5V. Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 8) and a bulk 10 uF capacitor on the same supply rail. For battery-powered designs, leverage XLP sleep modes; the datasheet specifies nanoamp-level quiescent current in Sleep with peripherals disabled. Add a 100 kohm pull-up on MCLR if not driven by the programmer to prevent spurious resets.
The 28-VQFN (4x4) package has an exposed thermal pad (EP) underneath that must be soldered to the PCB ground plane for mechanical strength and thermal dissipation. Vias in the EP land pattern reduce thermal resistance. Route ICSP signals PGD (RB6) and PGC (RB7) with short, parallel traces and a ground guard to keep programming reliable in noisy environments.
Do not skip configuring the CONFIG words in code; the default oscillator and watchdog settings may not match your application. The analog/digital shared pins (PORTA) must have their ANSEL bits cleared to use them as digital GPIO. The 28-VQFN package leaves no unused pins, so plan the pin map before PCB layout to avoid redesign. When migrating from PIC18F26K83 code, double-check peripheral library revisions because register names changed between K83 and Q10 families.
When using the 10-bit ADC2 with Computation, place the analog input traces away from switching signals such as PWM outputs on the CWG. Use the dedicated AVSS/AVDD rails if the device exposes them; otherwise decouple VDD with a ferrite bead plus 100 nF + 10 uF. The internal voltage reference (FVR) is shared with the DAC, so enabling the DAC affects ADC FVR buffer performance.
合規資訊
RoHS compliant and lead-free per Microchip product page. Industrial temperature grade (-I) is -40C to +85C; not AEC-Q100 qualified. Use AEC-Q100 qualified Q10 family members for automotive applications.
