PIC18F26J11-I/SO - 64KB Flash 8-bit MCU USB | Microchip
MPN: PIC18F26J11-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.97 | $2.97 |
| 10 | $2.82 | $28.20 |
| 100 | $2.55 | $255.00 |
| 500 | $2.31 | $1,155.00 |
| 1,000 | $2.18 | $2,180.00 |
PIC18F26J11-I/SO Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data memory, and on-chip peripherals such as ADC, timers, communication interfaces, and I/O pins. The PIC18F26J11 belongs to the 8-bit MCU hypernymy: 8-bit microcontroller -> microcontroller -> embedded processor -> semiconductor IC. It targets battery-powered and USB-connected devices where low standby current and flexible peripheral mapping reduce external component count and BOM cost.
Key features include 64 KB (32K x 16) self-programmable Flash, 4 KB RAM, 12 MIPS throughput at 48 MHz, on-chip Full-Speed USB 2.0 device/host/OTG, two USART, two MSSP (SPI/I2C), 10-bit ADC up to 10 channels, 2.0-3.6V single-supply operation, and deep-sleep current measured in nanoamps. PPS allows remapping of digital peripherals to any I/O pin, simplifying PCB routing in mixed-interface designs.
The architecture pairs a modified Harvard RISC core with a hardware multiply engine, a 10-channel 10-bit ADC with internal bandgap reference, four 16-bit timers, and dual analog comparators. The 28-pin SOIC exposes two capture/compare/PWM modules and the full USB transceiver block, allowing direct bus-powered or self-powered USB designs without external PHY ICs.
Typical applications include USB HID/CDC peripherals, low-power sensor nodes, industrial control panels, consumer appliances with USB firmware update, USB-to-UART bridge dongles, and battery-backed instrumentation. The deep-sleep mode with sub-microamp current makes it well suited to always-on duty-cycled IoT edge nodes.
When designing with this part, route the D+/D- USB pair as a 90-ohm differential with a 1.5 k pull-up on D- for Full-Speed device mode, and decouple VDD/VUSB with 100 nF plus 4.7 uF bulk capacitors within 5 mm of the pins. The PPS registers must be locked after configuration to prevent accidental remapping in the field.
Drop-in alternatives for PIC18F26J11-I/SO — 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 PIC18F26J11-I/SO (same form factor and footprint) — differing in Operating Temperature, Package, ADC, Timers, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F26J11T-I/SO
✅ Drop-In✓ In Stock
$3.18 / Unit
View Datasheet →PIC18F25J11-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F24J11-I/SO
✅ Drop-In✓ In Stock
$1.49 / Unit
View Datasheet →PIC18F25K80-I/SO
✅ Drop-In✓ In Stock
$2.71 / Unit
View Datasheet →PIC18F25K50-I/SO
✅ Drop-In✓ In Stock
$2.95 / Unit
View Datasheet →PIC18F2685-I/SO
✅ Drop-In✓ In Stock
$6.9 / Unit
View Datasheet →PIC18F26J11-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 8-bit RISC (modified Harvard) |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data RAM | 4 KB |
| Maximum CPU Frequency | 48 MHz (12 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| USB Interface | USB 2.0 Full-Speed Device/Host/OTG |
| ADC | 10-bit, up to 10 channels |
| Communication Peripherals | 2x USART, 2x MSSP (SPI/I2C) |
| Timers | 4x 16-bit Timer modules |
| Capture/Compare/PWM | 2x ECCP + 2x CCP |
| Analog Comparators | 2 |
| I/O Pins | 22 (on 28-pin SOIC) |
| Peripheral Pin Select (PPS) | Yes |
| Deep Sleep Current | nanoWatt XLP, sub-microamp standby |
| Package | 28-pin SOIC (300 mil, SO) |
| Operating Temperature | -40 C to +85 C (Industrial, -I) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| MSL Level | 1 |
PIC18F26J11-I/SO Pin Configuration
| Pin 1 | RA3/AN3/C1IN+/C2IN+/VREF+ — Port A bit 3 / ADC input / comparator input / ADC positive reference |
| Pin 2 | RA4/AN4/C1OUT/T0CKI — Port A bit 4 / ADC input / comparator 1 output / Timer0 clock input |
| Pin 3 | RA5/AN5/C2OUT — Port A bit 5 / ADC input / comparator 2 output |
| Pin 4 | RA6 — Port A bit 6 (general digital I/O) |
| Pin 5 | RA7 — Port A bit 7 (general digital I/O) |
| Pin 6 | VSS — Ground reference |
| Pin 7 | VDD — Positive supply voltage 2.0-3.6 V |
| Pin 8 | RB0/INT0/FLT0 — Port B bit 0 / external interrupt 0 / PWM fault input |
| Pin 9 | RB1/INT1 — Port B bit 1 / external interrupt 1 |
| Pin 10 | RB2/INT2 — Port B bit 2 / external interrupt 2 |
| Pin 11 | RB3 — Port B bit 3 (general digital I/O) |
| Pin 12 | RB4 — Port B bit 4 (general digital I/O) |
| Pin 13 | RB5 — Port B bit 5 (general digital I/O) |
| Pin 14 | RB6/PGC — Port B bit 6 / ICSP clock |
| Pin 15 | RB7/PGD — Port B bit 7 / ICSP data |
| Pin 16 | VSS — Ground reference |
| Pin 17 | VDD — Positive supply voltage 2.0-3.6 V |
| Pin 18 | VUSB — USB 3.3 V transceiver supply |
| Pin 19 | RC0 — Port C bit 0 (general digital I/O) |
| Pin 20 | RC1 — Port C bit 1 (general digital I/O) |
| Pin 21 | RC2 — Port C bit 2 (general digital I/O) |
| Pin 22 | RC3 — Port C bit 3 (general digital I/O) |
| Pin 23 | D- — USB Full-Speed data minus |
| Pin 24 | D+ — USB Full-Speed data plus |
| Pin 25 | RC4 — Port C bit 4 (general digital I/O) |
| Pin 26 | RC5 — Port C bit 5 (general digital I/O) |
| Pin 27 | RC6 — Port C bit 6 (general digital I/O) |
| Pin 28 | RC7 — Port C bit 7 (general digital I/O) |
Typical Applications
PIC18F26J11-I/SO is suitable for 6 applications: USB HID/CDC Peripheral Device, Low-Power Sensor Node, Industrial Control Panel Interface, USB-to-UART Bridge Dongle, Consumer Appliance with USB Firmware Update, Battery-Backed Instrumentation.
USB HID/CDC Peripheral Device
The PIC18F26J11-I/SO's integrated USB 2.0 Full-Speed transceiver and 64 KB Flash make it well suited for USB HID keyboards, CDC virtual COM ports, and custom vendor-class peripherals. Its 12 MIPS throughput at 48 MHz handles the USB 1 ms polling frame plus protocol stack with margin, while PPS allows flexible pin assignment for the D+/D- pair and indicator LEDs. NanoWatt XLP deep-sleep mode (< 1 uA) enables bus-powered designs where suspend current must stay under 2.5 mA per USB spec.
Recommended
Low-Power Sensor Node
The PIC18F26J11-I/SO excels in battery-backed sensor nodes thanks to nanoWatt XLP technology with sub-microamp deep-sleep current and 64 KB Flash for sensor-fusion code. Its 2.0-3.6 V supply range accepts a single Li-ion or two AA cells, while the 10-bit ADC with internal bandgap reference digitizes thermistor, battery voltage, and analog sensor channels. PPS lets designers route I2C sensor buses, UART debug output, and interrupt-driven wake-up lines to any spare GPIO without PCB rework.
Recommended
Industrial Control Panel Interface
The PIC18F26J11-I/SO fits industrial control panel HMIs and keypad/display interfaces with its 22 GPIO, two USART, and 4 KB RAM for menu state machines. The 28-SOIC package is easy to hand-solder for prototyping and survives -40 C to +85 C industrial temperature. PPS allows the SPI LCD bus, I2C keypad scanner, and UART to the main controller to be remapped without swapping PCB layers, reducing layout iterations.
Recommended
USB-to-UART Bridge Dongle
The PIC18F26J11-I/SO is ideal for USB-to-UART bridge dongles because its on-chip USB transceiver pairs with two USART channels for transparent serial bridging. The 64 KB Flash accommodates USB stack, CDC class driver, and user I/O handling with code headroom for proprietary protocols. The 28-SOIC is small enough for dongle form factors, while 3.3 V single-supply operation simplifies LDO selection downstream of the USB 5 V bus.
Recommended
Consumer Appliance with USB Firmware Update
The PIC18F26J11-I/SO serves consumer appliances that need in-field firmware updates via USB, leveraging its self-programmable Flash and dual memory regions. The integrated USB supports host mode for flash-drive bootloaders or device mode for PC-driven updates without external programmers. The wide 2.0-3.6 V supply range accepts regulated 3.3 V from common appliance SMPS designs, while PPS simplifies routing when the USB connector is far from the main PCB.
Recommended
Battery-Backed Instrumentation
The PIC18F26J11-I/SO is well matched to battery-backed instruments like portable data loggers and handheld meters, combining 64 KB Flash for sample storage buffers and nanoWatt XLP for long shelf life. The 10-bit ADC with internal reference digitizes sensor signals without external reference ICs, while two analog comparators provide low-battery and signal-threshold detection. The -40 C to +85 C industrial temperature rating supports outdoor and laboratory environments.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F26J11-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F26J11T-I/SO | PIC18F25J11-I/SO | PIC18F24J11-I/SO | PIC18F25K80-I/SO | PIC18F25K50-I/SO | PIC18F2685-I/SO |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Flash Memory | 64 KB | 64 KB | 32 KB | 32 KB | 32 KB | 32 KB | 96 KB |
| RAM | 4 KB | 4 KB | 3.8 KB | 3.8 KB | 3.6 KB | 2.4 KB | 3.3 KB |
| Max CPU Speed | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 64 MHz (16 MIPS) | 48 MHz (12 MIPS) | 40 MHz (10 MIPS) |
| USB | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed | None (no USB) | USB 2.0 Full-Speed | None (no USB) |
| Peripheral Pin Select (PPS) | Yes | Yes | Yes | Yes | Yes | Yes | No (legacy core) |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
Key Differentiators
- Largest Flash in J-series 28-SOIC family (vs PIC18F25J11-I/SO)
- On-chip USB with PPS flexibility (vs PIC18F2685-I/SO)
- XLP nanoWatt deep-sleep (vs PIC18F2685-I/SO)
Design Notes
Place a 100 nF decoupling capacitor within 5 mm of each VDD/VSS pin pair, and a 4.7 uF bulk capacitor near the VUSB pin for USB transceiver stability. The USB 3.3 V rail on VUSB must be sourced from either the internal 3.3 V regulator or an external LDO when USB is enabled. Use a star-ground topology separating the USB D+/D- return path from noisy digital return currents to meet USB 2.0 signal-integrity masks.
Route the D+ and D- USB traces as a 90-ohm differential pair with matching length, keeping them short and isolated from switching traces. The VUSB decoupling cap should be within 3 mm of pin 18. Place the ICSP pins (RB6/RB7) on a 0.1 inch header footprint for debug access without disturbing the main PCB layout. PPS mapping must be finalized before code freeze to avoid late-stage PCB respins.
Do not exceed 3.6 V on any VDD pin; the 18J series is NOT 5V tolerant on I/O. The D+ and D- pins must NOT be pulled high externally except via the internal 1.5 k pull-up enabled in firmware, otherwise the USB host may misdetect the device speed. The PPS registers must be unlocked, written, and re-locked at startup; leaving them unlocked risks accidental remapping by runaway code.
Compliance Information
RoHS compliant per Microchip product page and FindMyChip listing. Not AEC-Q100 qualified - select automotive-grade PIC18 variants for vehicle applications. Halogen-free per Microchip environmental compliance data.
