PIC18F86J65-I/PT - 8-bit MCU 96KB Flash 10BASE-T Ethernet TQFP-80
MPN: PIC18F86J65-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.95 | $8.95 |
| 10 | $8.1 | $81.00 |
| 100 | $7.2 | $720.00 |
| 500 | $6.45 | $3,225.00 |
| 1,000 | $5.8 | $5,800.00 |
PIC18F86J65-I/PT Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash), data memory (RAM), and peripheral set on one silicon die. PIC MCUs sit within the broader taxonomy of microcontrollers -> embedded controllers -> semiconductors, and the PIC18J subfamily specifically targets networked and connected embedded applications through integrated Ethernet, USB access and LCD driver peripherals.
Key features include a 10/100 Ethernet MAC peripheral, 41.667 MHz internal oscillator, an on-chip 8 MHz internal RC oscillator for system clock, a 10-bit ADC, multiple UART/SPI/I2C ports, and nanoWatt power management with sleep currents typically below 1 uA. The 80-pin TQFP exposes 68 I/O lines, suiting applications that need both Ethernet and significant GPIO.
The PIC18F86J65 architecture combines a RISC Harvard-bus core with C-compiler-friendly instructions and a 16-bit instruction word. On-chip peripherals include a 10BASE-T MAC, USB 2.0 Full-Speed OTG, parallel master port, comparators, CCP modules, and an LCD driver, allowing a single chip to implement connected embedded nodes.
Typical applications include industrial automation and remote monitoring nodes, building automation controllers, networked sensor gateways, embedded web servers, and home/utility metering. The integrated Ethernet MAC and 96 KB Flash place it in the connected-embedded segment where discrete Ethernet silicon would otherwise be required.
When designing with this device, ensure the external 25 MHz Ethernet PHY reference clock is provided, follow Microchip's TCP/IP stack memory sizing guidelines, and respect the 3.6 V absolute maximum supply to avoid damage during hot-plug events. Decouple VDD/VSS pairs with 100 nF ceramic caps placed within 5 mm of each pin pair.
This page synthesizes distributor pricing, drop-in PIC18F alternatives, and practical design notes that go beyond the manufacturer datasheet to help engineers select, source, and qualify the PIC18F86J65-I/PT quickly.
Drop-in alternatives for PIC18F86J65-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 PIC18F86J65-I/PT (same form factor and footprint) — differing in Package, MSL Level, ADC, I/O Pins, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F86J60-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F86J55-I/PT
✅ Drop-In✓ In Stock
$6.95 / Unit
View Datasheet →PIC18F86J15-I/PT
✅ Drop-In✓ In Stock
$5.32 / Unit
View Datasheet →PIC18F86J10-I/PT
✅ Drop-In✓ In Stock
$6.1 / Unit
View Datasheet →PIC18F86J65T-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F86J65-I/PT Maximum Ratings & Electrical Characteristics
| Core | PIC18 8-bit RISC, Harvard architecture |
| Maximum CPU Frequency | 41.667 MHz |
| Program Memory (Flash) | 96 KB (48K x 16) |
| Data RAM | 12 KB |
| Operating Voltage | 2.5 V to 3.6 V |
| I/O Pins | 68 |
| Ethernet Peripheral | 10BASE-T MAC (integrated) |
| ADC | 10-bit |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Package | 80-pin TQFP (12 x 12 mm, 0.5 mm pitch) |
| Mounting Type | Surface Mount |
| MSL Level | 3 |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Series | PIC 18J |
PIC18F86J65-I/PT Pin Configuration
| Pin 1 | RGND — Ethernet reference ground |
| Pin 2 | RBIAS — Ethernet bias resistor |
| Pin 3 | VDD — Digital supply voltage |
| Pin 4 | VSS — Digital ground |
| Pin 5 | RA0 — PORTA I/O pin |
| Pin 6 | RA1 — PORTA I/O pin |
| Pin 7 | RA2 — PORTA I/O pin |
| Pin 8 | RA3 — PORTA I/O pin |
| Pin 9 | RA4 — PORTA I/O pin |
| Pin 10 | RA5 — PORTA I/O pin |
| Pin 11 | RA6 — PORTA I/O pin |
| Pin 12 | RA7 — PORTA I/O pin |
| Pin 13 | VSS — Digital ground |
| Pin 14 | VDD — Digital supply voltage |
| Pin 15 | OSC1 — Crystal oscillator input |
| Pin 16 | OSC2 — Crystal oscillator output |
| Pin 17 | RC0 — PORTC I/O pin |
| Pin 18 | RC1 — PORTC I/O pin |
| Pin 19 | RC2 — PORTC I/O pin |
| Pin 20 | RC3 — PORTC I/O pin |
| Pin 21 | RC4 — PORTC I/O pin |
| Pin 22 | RC5 — PORTC I/O pin |
| Pin 23 | RC6 — PORTC I/O pin |
| Pin 24 | RC7 — PORTC I/O pin |
| Pin 25 | VSS — Digital ground |
| Pin 26 | VDD — Digital supply voltage |
| Pin 27 | RB0 — PORTB I/O pin |
| Pin 28 | RB1 — PORTB I/O pin |
| Pin 29 | RB2 — PORTB I/O pin |
| Pin 30 | RB3 — PORTB I/O pin |
| Pin 31 | RB4 — PORTB I/O pin |
| Pin 32 | RB5 — PORTB I/O pin |
| Pin 33 | RB6 — PORTB I/O pin / ICD clock |
| Pin 34 | RB7 — PORTB I/O pin / ICD data |
| Pin 35 | VSS — Digital ground |
| Pin 36 | VDD — Digital supply voltage |
| Pin 37 | RD0 — PORTD I/O pin |
| Pin 38 | RD1 — PORTD I/O pin |
| Pin 39 | RD2 — PORTD I/O pin |
| Pin 40 | RD3 — PORTD I/O pin |
| Pin 41 | RD4 — PORTD I/O pin |
| Pin 42 | RD5 — PORTD I/O pin |
| Pin 43 | RD6 — PORTD I/O pin |
| Pin 44 | RD7 — PORTD I/O pin |
| Pin 45 | VSS — Digital ground |
| Pin 46 | VDD — Digital supply voltage |
| Pin 47 | RE0 — PORTE I/O pin |
| Pin 48 | RE1 — PORTE I/O pin |
| Pin 49 | RE2 — PORTE I/O pin |
| Pin 50 | RE3 — PORTE I/O pin |
| Pin 51 | RE4 — PORTE I/O pin |
| Pin 52 | RE5 — PORTE I/O pin |
| Pin 53 | RE6 — PORTE I/O pin |
| Pin 54 | RE7 — PORTE I/O pin |
| Pin 55 | VSS — Digital ground |
| Pin 56 | VDD — Digital supply voltage |
| Pin 57 | RF0 — PORTF I/O pin |
| Pin 58 | RF1 — PORTF I/O pin |
| Pin 59 | RF2 — PORTF I/O pin |
| Pin 60 | RF3 — PORTF I/O pin |
| Pin 61 | RF4 — PORTF I/O pin |
| Pin 62 | RF5 — PORTF I/O pin |
| Pin 63 | RF6 — PORTF I/O pin |
| Pin 64 | RF7 — PORTF I/O pin |
| Pin 65 | VSS — Digital ground |
| Pin 66 | VDD — Digital supply voltage |
| Pin 67 | RG0 — PORTG I/O pin |
| Pin 68 | RG1 — PORTG I/O pin |
| Pin 69 | RG2 — PORTG I/O pin |
| Pin 70 | RG3 — PORTG I/O pin |
| Pin 71 | RG4 — PORTG I/O pin |
| Pin 72 | MCLR — Master clear reset |
| Pin 73 | VSS — Digital ground |
| Pin 74 | VDD — Digital supply voltage |
| Pin 75 | RH0 — PORTH I/O pin |
| Pin 76 | RH1 — PORTH I/O pin |
| Pin 77 | RH2 — PORTH I/O pin |
| Pin 78 | RH3 — PORTH I/O pin |
| Pin 79 | RH4 — PORTH I/O pin |
| Pin 80 | RH5 — PORTH I/O pin |
Typical Applications
PIC18F86J65-I/PT is suitable for 6 applications: Industrial Automation & Remote Monitoring Nodes, Building Automation Controllers, Networked Sensor Gateways, Embedded Web Servers, Home and Utility Metering, Connected Medical Monitoring Devices.
Industrial Automation & Remote Monitoring Nodes
The PIC18F86J65-I/PT is well-suited to industrial automation nodes because its integrated 10BASE-T Ethernet MAC and 96 KB Flash can host the Microchip TCP/IP stack (about 20-30 KB Flash) plus a Modbus TCP application. The 41.667 MHz core delivers 10 MIPS, sufficient for real-time polling loops. Operates from 2.5-3.6 V at -40 C to +85 C, fitting industrial cabinet environments. The 68 GPIO drive sensor front-ends and relay outputs directly, while the 12 KB RAM hosts multiple TCP socket buffers for sustained telemetry traffic.
Recommended
Building Automation Controllers
For HVAC and lighting controllers needing both Ethernet and USB service ports, the PIC18F86J65-I/PT combines an integrated MAC with USB 2.0 Full-Speed OTG on a single die. The 80-pin TQFP exposes enough GPIO to drive triac optocouplers and 0-10 V dimming channels. 96 KB Flash supports BACnet/IP or LonWorks gateways; 12 KB RAM is sufficient for small BACnet tables. The industrial temperature grade ensures reliable operation in plant rooms where ambient can spike above 70 C. Watch the 3.6 V supply ceiling when hot-plugging USB.
Recommended
Networked Sensor Gateways
The PIC18F86J65-I/PT serves as a sensor-to-cloud gateway by aggregating analog sensor data via the 10-bit ADC and forwarding it over Ethernet using MQTT or HTTP. Its 41.667 MHz core provides deterministic 10 MIPS for sampling and encryption tasks, while 12 KB RAM can hold a TLS connection buffer and packet queues. The integrated USB OTG also enables local configuration via mass-storage or CDC. Place 100 nF ceramic caps within 5 mm of each VDD/VSS pair and respect 3.6 V absolute maximum supply.
Recommended
Embedded Web Servers
With 96 KB Flash and 12 KB RAM, the PIC18F86J65-I/PT can host an embedded HTTP server with custom HTML, CGI handlers, and a small REST API. The 10BASE-T MAC and Microchip's free TCP/IP stack handle HTTP/1.1 plus a Modbus TCP endpoint concurrently. The 80-pin TQFP exposes 68 GPIO for driving status LEDs, buttons, and external sensors. Industrial-grade -40 C to +85 C supports outdoor enclosures. Avoid placing the MCU more than 25 mm from the RJ45 jack to keep MII traces short.
Recommended
Home and Utility Metering
Utility metering applications benefit from the PIC18F86J65-I/PT's integrated Ethernet for AMR/AMI backhaul, 10-bit ADC for analog meter signal conditioning, and the 80-pin TQFP that fits in compact meter enclosures. The 96 KB Flash supports DLMS/COSEM or custom metering protocols while 12 KB RAM hosts communication buffers and rolling averages. The -40 C to +85 C industrial grade handles outdoor meter cabinets. Provide a 25 MHz PHY reference clock and proper ground plane partitioning between analog and digital sections.
Recommended
Connected Medical Monitoring Devices
For connected medical peripherals requiring Ethernet connectivity (telemedicine carts, bedside monitors), the PIC18F86J65-I/PT delivers deterministic 10 MIPS, 96 KB Flash for protocol stacks, and 12 KB RAM for buffering waveform samples. The integrated USB OTG enables local diagnostic interfaces. Industrial-grade operation supports the thermal envelope of medical equipment rooms. Note: this is the standard PIC18 part, not a medical-qualified variant; design with IEC 60601 isolation barriers when used in patient-connected applications.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F86J65-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F86J60-I/PT | PIC18F86J55-I/PT | PIC18F86J15-I/PT | PIC18F86J10-I/PT | PIC18F86J65T-I/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-80 (12x12 mm) | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 96 KB | 96 KB - same | 96 KB - same | 96 KB - same | 64 KB (-33%) | 96 KB - same |
| RAM | 12 KB | 12 KB - same | 12 KB - same | 12 KB - same | 12 KB - same | 12 KB - same |
| Ethernet MAC | 10BASE-T integrated | 10BASE-T integrated | Not present | Not present | Not present | 10BASE-T integrated |
| USB Peripheral | USB 2.0 Full-Speed OTG | Not present | Not present | Not present | Not present | USB 2.0 Full-Speed OTG |
| Maximum Frequency | 41.667 MHz (10 MIPS) | 41.667 MHz (10 MIPS) | 41.667 MHz (10 MIPS) | 41.667 MHz (10 MIPS) | 41.667 MHz (10 MIPS) | 41.667 MHz (10 MIPS) |
| Operating Voltage | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V |
| Temperature Grade | 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 |
Key Differentiators
- Integrated 10BASE-T Ethernet MAC on-chip (vs PIC18F86J55-I/PT)
- Combined Ethernet + USB on single die (vs PIC18F86J60-I/PT)
- Full 96 KB Flash budget for TCP/IP + application (vs PIC18F86J10-I/PT)
Design Notes
Decouple each VDD/VSS pair with a 100 nF ceramic capacitor placed within 5 mm of the pin pair, plus a bulk 10 uF tantalum or ceramic near the supply entry point. The PIC18F86J65's 2.5-3.6 V supply range is narrow; ensure your LDO has adequate headroom and that hot-plug events (USB VBUS transients) do not exceed 3.6 V. Use a TVS diode such as SMAJ3.3CA on VBUS if USB is used.
The integrated 10BASE-T MAC requires an external PHY chip (e.g., DP83848 or LAN8720A) and a 25 MHz reference clock. Many engineers forget the MII trace length matching (within 50 mm and matched within 25 mm), causing CRC errors at high traffic. Keep MII traces short, length-matched, and routed over a continuous ground plane.
Route the 80-pin TQFP escape using 0.5 mm-pitch vias in a dog-bone pattern with 0.2 mm via diameter. Place 100 nF caps on the bottom layer directly under the IC, fan-out on top layer. Keep analog AVdd pins (if any on your variant) separated from digital VDD traces with a ferrite bead to avoid ADC noise coupling from switching I/O lines.
The 25 MHz PHY reference clock must be clean; route it on the top layer with ground shielding on both sides. The 41.667 MHz CPU clock generates harmonics up to 167 MHz; avoid running long parallel traces near MII data lines to prevent crosstalk. Use a 4-layer PCB with dedicated ground and power planes for reliable Ethernet throughput.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; for automotive applications use PIC18F variants with -E or -V suffixes that are AEC-Q100 qualified.
