PIC18F26J11T-I/SO - 8-Bit 48MHz 64KB Flash MCU 28-SOIC | Microchip
MPN: PIC18F26J11T-I/SO ✓ نشطPIC18F26J11T-I/SO نظرة عامة
What is an 8-bit microcontroller? An 8-bit MCU is a small computer-on-a-chip that processes data in 8-bit words and is the workhorse of embedded control. Within the broader taxonomy, the PIC18F26J11 belongs to: microcontroller -> 8-bit MCU -> flash MCU -> PIC18 family -> PIC18 J-series -> PIC18F26J11 subgroup. The PIC18F26J11T-I/SO combines the mature PIC18 instruction set with the low-power J-series improvements, making it well suited for cost-sensitive applications that also demand long battery life.
Key differentiating features include a Peripheral Pin Select (PPS) unit that allows remapping of digital peripherals to multiple I/O pins, an internal 31 kHz to 8 MHz oscillator with PLL for flexible clocking, multiple serial interfaces (I2C, SPI, UART), a 10-bit ADC, and up to four hardware PWM/Capture-Compare modules. The non-T (no “T”) variant PIC18F26J11-I/SO shares the same die but ships in tube or tray packing; the “T” suffix here denotes Tape & Reel packaging, electrical specs are identical.
Architecturally, the PIC18F26J11T-I/SO uses Microchip’s enhanced Harvard architecture with separate program (Flash) and data (SRAM) buses, accelerating instruction fetch and data access in parallel. The included nanoWatt XLP features - Deep Sleep, ultra-low-power wake-up, and the ability to run peripherals while the core is asleep - make this device a strong fit for energy harvesting, sensor and remote-control designs.
Typical applications include USB HID peripherals (a natural fit for the J-series), industrial sensor nodes, low-power IoT edge devices, white goods and small appliance control, and remote controls / human-interface devices. Pairing the MCU with an MCP2200 or PICkit programmer accelerates firmware development.
When designing with this part, plan the analog and digital supply decoupling carefully. Place 100 nF ceramic bypass capacitors close to VDD/VSS pairs and consider a 10 µF bulk capacitor on the main rail. Keep analog VDD traces short and, if the USB transceiver is used, ensure the D+/D- traces are 90 Ω differential and matched in length to maintain signal integrity.
This page synthesizes distributor pricing, drop-in same-brand alternatives, and practical PCB design notes not consolidated on any single manufacturer or distributor page.
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الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع PIC18F26J11T-I/SO (نفس عامل الشكل والبصمة) — يختلف في Package, ADC, Operating Temperature, Timers, I/O Pins.
PIC18F26J11-I/SO
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F26J13T-I/SO
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC18F25K22-I/SO
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F25J11-I/SP
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F24J11-I/SO
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F2550-I/SO
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F26J11T-I/SO الحدود القصوى والخصائص الكهربائية
| Core Processor | PIC |
| Core Size | 8-bit |
| Core Series | PIC18 J-series (XLP) |
| Program Memory | 64KB (32K x 16) Flash |
| RAM | 4KB |
| CPU Speed | 48 MHz (12 MIPS) |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| I/O Pins | 25 |
| العلبة | 28-pin SOIC (7.50 mm, 0.295" body width) |
| نوع التركيب | Surface Mount |
| درجة حرارة التشغيل | -40 °C to +85 °C (Industrial) |
| Connectivity | I2C, SPI, UART (EUSART), USB 2.0 Full-Speed |
| Peripherals | Brown-out Detect, PWM, WDT, Peripheral Pin Select (PPS) |
| Program Memory Type | Flash |
| مستوى MSL | 1 (unlimited) |
| Lead Free / RoHS | Lead-Free, RoHS Compliant |
تكوين أطراف PIC18F26J11T-I/SO
| دبوس 1 | MCLR — Master Clear (Reset) input, active low |
| دبوس 2 | RA0 — Digital I/O / Analog input / PPS remap |
| دبوس 3 | RA1 — Digital I/O / Analog input / PPS remap |
| دبوس 4 | RA2 — Digital I/O / Analog input / PPS remap |
| دبوس 5 | RA3 — Digital I/O / Analog input / Reference voltage |
| دبوس 6 | RA4 — Digital I/O / Timer0 clock input |
| دبوس 7 | RA5 — Digital I/O / PPS remap |
| دبوس 8 | VSS — Ground reference |
| دبوس 9 | RA7 — Digital I/O / Oscillator input |
| دبوس 10 | RA6 — Digital I/O / Oscillator output |
| دبوس 11 | RC0 — Digital I/O / PPS remap |
| دبوس 12 | RC1 — Digital I/O / PPS remap |
| دبوس 13 | RC2 — Digital I/O / PPS remap |
| دبوس 14 | RC3 — Digital I/O / PPS remap / USB D- (variant-dependent) |
| دبوس 15 | RC4 — Digital I/O / PPS remap / USB D+ (variant-dependent) |
| دبوس 16 | RC5 — Digital I/O / PPS remap |
| دبوس 17 | RC6 — Digital I/O / PPS remap / TX on EUSART |
| دبوس 18 | RC7 — Digital I/O / PPS remap / RX on EUSART |
| دبوس 19 | VSS — Ground reference (digital) |
| دبوس 20 | VDD — Positive supply 4.2V-5.5V (digital) |
| دبوس 21 | RB0 — Digital I/O / Interrupt-on-change / PPS remap |
| دبوس 22 | RB1 — Digital I/O / Interrupt-on-change / PPS remap |
| دبوس 23 | RB2 — Digital I/O / Interrupt-on-change / PPS remap |
| دبوس 24 | RB3 — Digital I/O / Interrupt-on-change / PPS remap |
| دبوس 25 | RB4 — Digital I/O / Interrupt-on-change / PPS remap |
| دبوس 26 | RB5 — Digital I/O / Interrupt-on-change / PPS remap |
| دبوس 27 | RB6 — Digital I/O / ICSP clock / PPS remap |
| دبوس 28 | RB7 — Digital I/O / ICSP data / PPS remap |
التطبيقات النموذجية
PIC18F26J11T-I/SO مناسب لـ 6 التطبيقs: USB HID Peripherals, Battery-Powered Sensor Nodes, Industrial Control & Automation, Consumer Remote Controls, White Goods & Home Appliances, Test & Measurement Handhelds.
USB HID Peripherals
The PIC18F26J11T-I/SO integrates a USB 2.0 Full-Speed transceiver with internal D+ pull-up, eliminating an external USB transceiver and reducing BOM by ~USD 1 per board. Combined with 64KB Flash and 4KB RAM, the device can run Microchip's USB Framework (MCHPFSUSB) and a HID class driver directly, supporting keyboards, mice, game controllers and custom HID devices. The 28-SOIC footprint provides enough I/O for LEDs, buttons and feature expansion. NanoWatt XLP Deep Sleep draws sub-µA standby current, helping battery-powered HID peripherals meet idle-current targets like EU Lot 6 energy limits.
موصى به
Battery-Powered Sensor Nodes
The PIC18F26J11T-I/SO suits wireless sensor nodes where multi-year battery life is required. Its Deep Sleep mode drops current below 100 nA with the RTCC running, while Peripheral Pin Select lets designers remap UART/SPI/I2C to free pins for an RF module. The 48 MHz core wakes in microseconds and executes sensor read/sleep cycles efficiently. With 4KB SRAM the device buffers measurement packets before RF transmission. The 28-SOIC package is easy to hand-prototype on breakout boards for field testing.
موصى به
Industrial Control & Automation
In industrial control panels the PIC18F26J11T-I/SO delivers deterministic 8-bit control with the rugged 28-SOIC package rated for -40°C to +85°C. The Peripheral Pin Select remaps digital interfaces for UART/SPI/I2C sensor chains, and the 10-bit ADC scans analog feedback channels. The 12 MIPS throughput handles PID loops, while the 4KB SRAM keeps local state buffers without burdening the host PLC. Brown-out reset and WDT increase industrial reliability.
موصى به
Consumer Remote Controls
Infrared and BLE remote controls benefit from the PIC18F26J11T-I/SO’s nanoWatt Deep Sleep (sub-µA) and Peripheral Pin Select routing flexibility. With 4KB RAM the firmware can manage multi-protocol IR codes (RC5, NEC, SIRC), and 64KB Flash holds large IR code libraries. The 28-SOIC variant also simplifies PCB layout for handheld enclosures. Industrial temp range supports automotive cabin and outdoor remote use.
موصى به
White Goods & Home Appliances
Washing machines, dryers, microwave ovens and small kitchen appliances commonly use PIC18 J-series MCUs for user-interface and motor/valve control. The PIC18F26J11T-I/SO provides 25 I/O for keypads, 7-segment LED displays, relays and triac-fired heater elements. The 48 MHz core executes supervisory logic with deterministic timing, while 64KB Flash holds UI localization strings. AEC-Q100 is not required for indoor appliance use, making the industrial -40°C to +85°C grade sufficient.
موصى به
Test & Measurement Handhelds
The PIC18F26J11T-I/SO fits portable digital multimeters and bench instruments where 64KB Flash stores calibration tables, measurement firmware and the user menu, while 4KB SRAM logs measurement sequences. Peripheral Pin Select lets engineers reuse pins for SPI LCD, ADC front-ends and serial interfaces without re-laying the PCB. The 48 MHz core runs math-heavy RMS/THD calculations, and the industrial temp grade helps in fluctuating environments. Battery life benefits from the J-series nanoWatt XLP current profile.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC18F26J11T-I/SO — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PIC18F26J11-I/SO | PIC18F26J13T-I/SO | PIC18F25K22-I/SO | PIC18F25J11-I/SP | PIC18F24J11-I/SO | PIC18F2550-I/SO |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC | 28-SOIC | 28-SOIC | 28-SOIC | 28-SOIC | 28-SOIC | 28-SOIC |
| Program Memory (Flash) | 64KB | 64KB | 64KB | 32KB | 32KB | 16KB | 32KB |
| RAM | 4KB | 4KB | 3.6KB | 1.5KB | 4KB | 3.8KB | 2KB |
| Core / Speed | PIC18 8-bit @ 48MHz (12 MIPS) | PIC18 @ 48MHz (12 MIPS) | PIC18 @ 48MHz (12 MIPS) | PIC18 K-series @ 64MHz (16 MIPS) | PIC18 J @ 48MHz (12 MIPS) | PIC18 J @ 48MHz (12 MIPS) | PIC18 @ 48MHz (12 MIPS) |
| Operating Voltage | 4.2V - 5.5V | 4.2V - 5.5V | 4.2V - 5.5V | 1.8V - 5.5V | 4.2V - 5.5V | 4.2V - 5.5V | 4.2V - 5.5V |
| I/O Pins | 25 | 25 | 25 | 25 | 25 | 25 | 23 |
| USB | USB 2.0 Full-Speed integrated | USB 2.0 Full-Speed | USB 2.0 Full-Speed | No USB | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed (legacy) |
| Deep Sleep / nanoWatt XLP | Yes (J-series XLP) | Yes | Yes | Limited (no Deep Sleep) | Yes | Yes | No |
| Lifecycle Status | Active | Active | Active | Active | Active | Active | Active (legacy) |
أبرز الفروقات
- Active product with integrated USB 2.0 Full-Speed transceiver and nanoWatt XLP Deep Sleep (مقابلPIC18F2550-I/SO)
- 64KB Flash + 4KB RAM in the lowest-cost 28-SOIC PIC18 J-series tier (مقابلPIC18F25K22-I/SO)
- Complete J-series feature set including PPS for flexible peripheral routing (مقابلPIC18F25J11-I/SP)
ملاحظات التصميم
The PIC18F26J11T-I/SO requires 4.2V-5.5V supply. Use 100 nF ceramic bypass capacitors as close as possible to each VDD/VSS pin pair (pin 8 GND, pin 20 VDD, plus AVDD if used). For USB-powered designs place a 10 µF bulk capacitor on the VBUS rail. Microchip's datasheet recommends keeping analog VDD separate from digital VDD when ADC accuracy matters; a ferrite bead between digital and analog supplies reduces switching noise injection by 10-20 dB.
Route the ICSP clock (RB6, pin 27) and ICSP data (RB7, pin 28) traces away from switching power and high-current AC traces; keep them under ~50 mm to avoid programming noise glitches. MCLR (pin 1) must have a 10 kΩ pull-up to VDD plus a 100 nF capacitor to ground for clean reset behavior during in-circuit programming. Without these components the part may fail to enter ICSP mode on freshly assembled boards.
Estimated power dissipation: VDD=5V, all 25 I/O driving 5mA outputs = ~250mW. The 28-SOIC package has a θJA of approximately 50-60 °C/W on a standard 2-layer FR4 board. At 25°C ambient, junction rise is ~15°C (well under the 125°C limit). For high-current GPIO designs drop VDD to 3.3V via the PIC18LF26J11 variant (2.0V-3.6V) or limit total I/O source/sink current to 200 mA per the datasheet absolute maximum.
USB D+ and D- traces must be 90 Ω differential with length matching within 1 mm; keep the pair routed over a continuous ground plane to maintain impedance. Place the 15 kΩ pull-down on D- and the internal pull-up (or external 1.5 kΩ on D+) as near the MCU pins as possible. Crosstalk of more than 50 mV on adjacent high-speed signals can cause eye-pattern failures at USB Full-Speed (12 Mbps).
Do not confuse PIC18F26J11 (4.2V-5.5V) with PIC18LF26J11 (2.0V-3.6V); the part marking is similar and incorrect selection at 3.3V will cause EEPROM corruption and brown-out resets. Always verify the operating voltage from the manufacturer datasheet before ordering. The PIC18F26J11T-I/SO ships without USB bootloader; you must program it via ICSP using a PICkit or ICD programmer.
معلومات الامتثال
RoHS / REACH compliant per Microchip product page. Not AEC-Q100 qualified; for automotive USB HID select PIC18F26J11-I/SO with industrial temp grade -40°C to +85°C.
