PIC18F86J55-I/PT - 8-Bit 48MHz 96KB Flash USB MCU | Microchip
MPN: PIC18F86J55-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.95 | $9.95 |
| 10 | $9.1 | $91.00 |
| 100 | $8.4 | $840.00 |
| 500 | $7.65 | $3,825.00 |
| 1,000 | $6.95 | $6,950.00 |
PIC18F86J55-I/PT Overview
An 8-bit microcontroller (MCU) is a programmable integrated circuit that executes instructions from internal Flash memory using an 8-bit data path. It belongs to the microcontroller family within the broader semiconductor hierarchy: microcontroller -> embedded processor -> integrated circuit -> semiconductor. The PIC18F86J55 belongs to Microchip's PIC18J sub-family, distinguished by low-voltage (2.5V/3.3V) operation, integrated USB 2.0 Full-Speed, and nanoWatt power-saving modes for battery-friendly designs.
Key features include 70 I/O pins, an internal 8 MHz RC oscillator (with PLL options up to 48 MHz), nanoWatt power-saving modes for sleep/idle operation, and an on-chip 10-bit ADC. The 80-TQFP package provides generous pin count for parallel-bus and analog-rich designs while maintaining a 12x12 mm footprint compatible with standard 80-pin TQFP land patterns. The wide pin count supports multiple peripheral pin-select functions and large display/keypad interfaces.
The PIC18F86J55 architecture is built on Microchip's enhanced RISC core with 16-bit wide instructions and Harvard bus architecture, providing high computational throughput at low clock rates. The J-series (low-voltage) design trades 5V tolerance for lower power consumption and integrated USB, making it a power-optimized variant of the classic PIC18F family. Internal memory mapping supports separate program Flash, data EEPROM, and SRAM buses for deterministic real-time response.
Typical applications include USB Human Interface Devices (HID) such as keyboards, mice, and custom peripherals; embedded sensing and instrumentation with USB connectivity; industrial control panels requiring multiple serial interfaces; and low-power remote sensor nodes with USB diagnostic ports. The on-chip nanoWatt modes suit battery-backed designs that periodically wake to communicate over USB.
When designing with this part, ensure USB signal integrity by following the PCB layout guidelines in the Microchip datasheet (90-ohm differential impedance for D+/D-, short stubs to the connector, common-mode choke for EMI-sensitive environments). Adequate decoupling - 100 nF ceramic per VDD pair plus a bulk 10 uF near the USB VBUS pin - is essential for stable USB enumeration.
This page synthesizes distributor pricing, drop-in PIC18F86J55 family alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC18F86J55-I/PT — 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 PIC18F86J55-I/PT (same form factor and footprint) — differing in Package, Operating Temperature, I/O Pins, MSL Level, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F86J50-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F66J55-I/PT
✅ Drop-In✓ In Stock
$4.31 / Unit
View Datasheet →PIC18F86J55T-I/PT
✅ Drop-In✓ In Stock
$5.95 / Unit
View Datasheet →PIC18F67J50-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F87J50-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$6.4 / Unit
View Datasheet →PIC18F86J55-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit (PIC18 enhanced RISC) |
| Family | PIC® 18J Series |
| Program Memory Type | Flash |
| Program Memory Size | 96 KB (48K x 16) |
| RAM Size | 3.936 KB (3936 bytes) |
| Data Bus Width | 16-bit (Flash), 8-bit core |
| Maximum CPU Frequency | 48 MHz |
| Supply Voltage | 4.2 V to 5.5 V (note: 2.5V/3.3V part number suffix variants exist in the family) |
| I/O Pins | 70 |
| Package | 80-pin TQFP (12x12 mm, 1 mm height) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial, -I suffix) |
| USB Interface | USB 2.0 Full-Speed (12 Mbit/s), on-chip transceiver |
| Other Serial Interfaces | MI2C, SPI (up to 10 Mbit/s), EUSART (LIN-capable) |
| ADC | 10-bit on-chip |
| Power-Saving Modes | nanoWatt (Sleep, Idle, alternate oscillator switching) |
| MSL Level | 3 (168 hours, JEDEC J-STD-020) |
| RoHS Status | Compliant |
PIC18F86J55-I/PT Pin Configuration
| Pin 1 | RH0 — Digital I/O port RH0 |
| Pin 2 | RH1 — Digital I/O port RH1 |
| Pin 3 | RH2 — Digital I/O port RH2 |
| Pin 4 | RH3 — Digital I/O port RH3 |
| Pin 5 | RH4 — Digital I/O port RH4 |
| Pin 6 | RH5 — Digital I/O port RH5 |
| Pin 7 | RH6 — Digital I/O port RH6 |
| Pin 8 | RH7 — Digital I/O port RH7 |
| Pin 9 | VSS — Ground reference |
| Pin 10 | RG0 — Digital I/O port RG0 |
| Pin 11 | RG1 — Digital I/O port RG1 |
| Pin 12 | RG2 — Digital I/O port RG2 |
| Pin 13 | RG3 — Digital I/O port RG3 |
| Pin 14 | RG4 — Digital I/O port RG4 / JTAG |
| Pin 15 | RG5 — Digital I/O port RG5 / JTAG |
| Pin 16 | RG6 — Digital I/O port RG6 |
| Pin 17 | RG7 — Digital I/O port RG7 |
| Pin 18 | VSS — Ground reference |
| Pin 19 | VDD — Digital supply (2.5V/3.3V) |
| Pin 20 | RF0 — Digital I/O port RF0 |
| Pin 21 | RF1 — Digital I/O port RF1 |
| Pin 22 | RF2 — Digital I/O port RF2 |
| Pin 23 | RF3 — Digital I/O port RF3 |
| Pin 24 | RF4 — Digital I/O port RF4 |
| Pin 25 | RF5 — Digital I/O port RF5 |
| Pin 26 | RF6 — Digital I/O port RF6 |
| Pin 27 | RF7 — Digital I/O port RF7 |
| Pin 28 | AVDD — Analog supply |
| Pin 29 | AVSS — Analog ground |
| Pin 30 | RA0 — Analog/Digital I/O RA0 / AN0 |
| Pin 31 | RA1 — Analog/Digital I/O RA1 / AN1 |
| Pin 32 | RA2 — Analog/Digital I/O RA2 / AN2 / VREF- |
| Pin 33 | RA3 — Analog/Digital I/O RA3 / AN3 / VREF+ |
| Pin 34 | RA4 — Digital I/O RA4 |
| Pin 35 | RA5 — Digital I/O RA5 |
| Pin 36 | RA6 — Digital I/O RA6 / OSC2 |
| Pin 37 | RA7 — Digital I/O RA7 / OSC1 |
| Pin 38 | VSS — Ground reference |
| Pin 39 | VDD — Digital supply (2.5V/3.3V) |
| Pin 40 | RB0 — Digital I/O port RB0 / INT0 |
| Pin 41 | RB1 — Digital I/O port RB1 / INT1 |
| Pin 42 | RB2 — Digital I/O port RB2 / INT2 |
| Pin 43 | RB3 — Digital I/O port RB3 / INT3 |
| Pin 44 | RB4 — Digital I/O port RB4 |
| Pin 45 | RB5 — Digital I/O port RB5 |
| Pin 46 | RB6 — Digital I/O port RB6 / ICSPCLK |
| Pin 47 | RB7 — Digital I/O port RB7 / ICSPDAT |
| Pin 48 | VSS — Ground reference |
| Pin 49 | VDD — Digital supply (2.5V/3.3V) |
| Pin 50 | RC0 — Digital I/O port RC0 |
| Pin 51 | RC1 — Digital I/O port RC1 / T1OSI |
| Pin 52 | RC2 — Digital I/O port RC2 / T1OSO |
| Pin 53 | VUSB — USB internal transceiver supply (3.3V LDO output) |
| Pin 54 | VDD — Digital supply (2.5V/3.3V) |
| Pin 55 | RC3 — Digital I/O port RC3 |
| Pin 56 | RC4 — Digital I/O port RC4 / USB D- |
| Pin 57 | RC5 — Digital I/O port RC5 / USB D+ |
| Pin 58 | RC6 — Digital I/O port RC6 / TX |
| Pin 59 | RC7 — Digital I/O port RC7 / RX |
| Pin 60 | VSS — Ground reference |
| Pin 61 | RD0 — Digital I/O port RD0 |
| Pin 62 | RD1 — Digital I/O port RD1 |
| Pin 63 | RD2 — Digital I/O port RD2 |
| Pin 64 | RD3 — Digital I/O port RD3 |
| Pin 65 | RD4 — Digital I/O port RD4 |
| Pin 66 | RD5 — Digital I/O port RD5 |
| Pin 67 | RD6 — Digital I/O port RD6 |
| Pin 68 | RD7 — Digital I/O port RD7 |
| Pin 69 | VSS — Ground reference |
| Pin 70 | VDD — Digital supply (2.5V/3.3V) |
| Pin 71 | RE0 — Digital I/O port RE0 |
| Pin 72 | RE1 — Digital I/O port RE1 |
| Pin 73 | RE2 — Digital I/O port RE2 |
| Pin 74 | RE3 — Digital I/O port RE3 |
| Pin 75 | RE4 — Digital I/O port RE4 |
| Pin 76 | RE5 — Digital I/O port RE5 |
| Pin 77 | RE6 — Digital I/O port RE6 |
| Pin 78 | RE7 — Digital I/O port RE7 |
| Pin 79 | MCLR — Master Clear (reset, active low) |
| Pin 80 | RJ0 — Digital I/O port RJ0 |
Typical Applications
PIC18F86J55-I/PT is suitable for 6 applications: USB Human Interface Device (HID), Industrial Control Panel with USB Diagnostics, USB Tethered Sensor / Data Logger, USB Bootloader / Programming Dongle, Embedded Audio Streaming over USB, Point-of-Sale Terminal / Kiosk Module.
USB Human Interface Device (HID)
The PIC18F86J55-I/PT is engineered for USB HID applications such as keyboards, mice, custom control surfaces, and industrial input panels. Its integrated USB 2.0 Full-Speed peripheral (12 Mbit/s) plus on-chip transceiver eliminates the need for external USB chips, while the 96 KB Flash supports USB HID report descriptors, multi-button/axis mapping tables, and CDC stacks simultaneously. The 48 MHz core provides 16 MIPS, enough for real-time key debouncing, LED animation, and composite HID/COM composite device designs without offloading logic.
Recommended
Industrial Control Panel with USB Diagnostics
The PIC18F86J55-I/PT is well suited for industrial control panels that require USB diagnostics ports alongside EUSART (LIN-capable) for legacy fieldbus and SPI (up to 10 Mbit/s) for fast sensor or display interfacing. The 70 I/O pins accommodate segmented displays, keypad matrices, indicator towers, and PWM-actuated relays. nanoWatt power-saving modes cut current during standby, while -40C to +85C industrial temperature range tolerates cabinet environments near motors and switching power supplies.
Recommended
USB Tethered Sensor / Data Logger
The PIC18F86J55-I/PT fits USB tethered data loggers that sample slow analog signals and stream them over USB CDC virtual COM port to a host PC. The 10-bit ADC combined with 70 I/O pins supports multi-channel sensor multiplexing, while 3.936 KB RAM buffers sample bursts before USB transfers. Sleep current in the microampere range allows the device to disconnect from the bus cleanly when VBUS is removed, preventing phantom power drain in field-instrument use cases.
Recommended
USB Bootloader / Programming Dongle
The PIC18F86J55-I/PT can host a USB bootloader that reprograms external devices or its own Flash, enabling field-upgradeable firmware in production units. The 96 KB Flash easily accommodates Microchip's USB bootloader plus user application, and self-programmability via ICSP allows in-field firmware refresh. The four serial ports (USB, MI2C, SPI, EUSART) let the dongle bridge legacy UART devices to USB hosts during manufacturing test or technician service updates.
Recommended
Embedded Audio Streaming over USB
The PIC18F86J55-I/PT can implement USB isochronous audio class devices for low-bandwidth audio streaming (microphone input or headphone output), useful in conferencing peripherals or intercoms. The 48 MHz core sustains 16 MIPS - enough for 8 kHz mono audio framing, basic filtering, and isochronous endpoint management. The on-chip 10-bit ADC and PWM plus SPI audio DACs support direct analog I/O. Larger designs may use the PIC18F87J50 for additional buffer memory.
Recommended
Point-of-Sale Terminal / Kiosk Module
The PIC18F86J55-I/PT can drive point-of-sale terminals and kiosks that need USB device connectivity (for payment terminals or barcode scanners), EUSART for legacy serial peripherals (cash drawers, receipt printers), and enough I/O for keypad and display. The wide 70 I/O pin count supports keypad scanning, LCD/LED drive, and indicator control without external I/O expanders. The 96 KB Flash stores USB stacks, device drivers, and application state machines typical of embedded POS modules.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F86J55-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F86J50-I/PT | PIC18F86J55T-I/PT | PIC18F87J50-I/PT | PIC18F67J50-I/PT | PIC18F66J55-I/PT |
|---|---|---|---|---|---|---|
| Package | 80-TQFP (12x12 mm) | 80-TQFP (12x12 mm) - same | 80-TQFP (12x12 mm) - same | 80-TQFP (12x12 mm) - same | 64-TQFP - smaller footprint | 64-TQFP - smaller footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Architecture | 8-bit PIC18 enhanced RISC | 8-bit PIC18 enhanced RISC | 8-bit PIC18 enhanced RISC | 8-bit PIC18 enhanced RISC | 8-bit PIC18 enhanced RISC | 8-bit PIC18 enhanced RISC |
| Program Memory (Flash) | 96 KB | 64 KB | 96 KB (same) | 128 KB | 128 KB | 96 KB (same) |
| RAM Size | 3.936 KB | 3.936 KB | 3.936 KB (same) | 3.936 KB | 3.936 KB | 3.936 KB (same) |
| Maximum Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| USB Interface | USB 2.0 Full-Speed (12 Mbit/s) | USB 2.0 Full-Speed (12 Mbit/s) | USB 2.0 Full-Speed (12 Mbit/s) | USB 2.0 Full-Speed (12 Mbit/s) | USB 2.0 Full-Speed (12 Mbit/s) | USB 2.0 Full-Speed (12 Mbit/s) |
| I/O Pin Count | 70 | 70 | 70 | 70 | 51 | 51 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
Key Differentiators
- Largest Flash in the PIC18 J55 USB family (vs PIC18F86J50-I/PT)
- 70 I/O pins in 80-pin TQFP (vs PIC18F66J55-I/PT)
- Industrial temperature range (-40C to +85C) (vs PIC18F85K22T-I/PT (K22 family))
Design Notes
The USB D+ and D- differential pair must be routed with 90-ohm differential impedance to maintain USB 2.0 Full-Speed signal integrity. Keep the differential trace length under 50 mm, use a continuous ground reference plane underneath, and place the common-mode choke near the USB connector side. Series ferrite beads or a CM choke are recommended in EMI-sensitive environments (medical, automotive) to suppress common-mode emissions on the data pair.
Decouple each VDD/AVDD pair with a 100 nF ceramic capacitor placed within 2 mm of the pin, plus a shared 10 uF bulk capacitor near the USB VBUS pin. The PIC18F86J55 internal 3.3V LDO (VUSB pin 53) requires a 220 nF bypass cap for stable USB transceiver operation. Inadequate decoupling on VUSB is a leading cause of USB enumeration failures - measure VUSB with an oscilloscope during enumeration to verify the 3.3V rail is ripple-free.
The PIC18F86J55-I/PT operates at 2.5V/3.3V (not 5V); applying 5V to VDD will damage the device. Always verify the variant suffix (J5x vs FJ5x) and target supply rail. Also note that the I/O pins are NOT 5V tolerant - use external level shifters when interfacing to 5V peripherals such as legacy sensors or LCDs. Finally, configure the Configuration bits (CONFIG1L) for the correct oscillator mode before code execution begins to avoid clock-related startup failures.
Compliance Information
RoHS compliant per Microchip product page. AEC-Q100 not qualified - check PIC18F automotive variants for qualified parts. Halogen-free status not explicitly stated in the verified web data.
