PIC18F86J94-I/PT - 8-bit 64KB Flash LCD USB MCU | Microchip
MPN: PIC18F86J94-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.2 | $7.20 |
| 10 | $6.48 | $64.80 |
| 100 | $5.65 | $565.00 |
| 500 | $5.04 | $2,520.00 |
| 1,000 | $4.5 | $4,500.00 |
PIC18F86J94-I/PT Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), and a rich set of peripherals such as ADCs, communication interfaces, and timers. The PIC18F86J94 belongs to the 8-bit PIC18 hierarchy (8-bit -> microcontroller -> embedded controller -> semiconductor) and is designed for human-interface and low-power embedded products. Unlike 32-bit Cortex-M devices, the 8-bit PIC18 core prioritises deterministic I/O, ultra-low sleep current, and easy interrupt handling.
Key differentiating features include a 12-bit ADC with up to 16 channels, mTouch capacitive touch sensing hardware, two USB 2.0 full-speed ports (host + device/OTG via internal PHY), four 16-bit timers, and a charge-pump-assisted segmented LCD interface capable of driving up to 368 pixels. The nanoWatt XLP technology delivers sleep currents below 100 nA in deep sleep with LCD retention, enabling multi-year battery life on coin cells.
The architecture combines a Harvard RISC core with a 16-bit wide instruction path, hardware peripheral-pinning mapping (PPS) for flexible I/O assignment, and CTMU charge-time measurement for touch and capacitive sensing. The integrated 3.2 V LDO and on-chip voltage boost allow the LCD segments to be driven even from a single 1.5 V battery when paired with external caps.
Typical applications include thermostats, blood-pressure monitors, utility meters, USB-connected sensor hubs, white-goods HMI panels, and portable medical or fitness devices. The 80-pin TQFP exposes enough I/O to drive large segment LCDs plus a USB port without an external transceiver.
When designing with this part, note that the 18J series runs at 3.3 V and is *not* 5 V tolerant on most pins - level shifters are required when interfacing to 5 V legacy peripherals. Allow at least 1.0 V headroom from the regulator for the 64 MHz PLL to lock reliably across temperature.
This page combines distributor pricing, drop-in same-package alternatives, and practical design notes that go beyond the manufacturer's datasheet, helping engineers select and qualify the PIC18F86J94-I/PT faster.
Drop-in alternatives for PIC18F86J94-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 PIC18F86J94-I/PT (same form factor and footprint) — differing in Package, ADC, Program Memory (Flash), Operating Temperature, Maximum CPU Frequency.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F86J94T-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F85J94-I/PT
✅ Drop-In✓ In Stock
$4.85 / Unit
View Datasheet →PIC18F86J72-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F85K90-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F86J55-I/PT
✅ Drop-In✓ In Stock
$6.95 / Unit
View Datasheet →PIC18F86J65-I/PT
✅ Drop-In✓ In Stock
$5.8 / Unit
View Datasheet →PIC18F86J94-I/PT Maximum Ratings & Electrical Characteristics
| Family | PIC18J (PIC18F86J94) |
| Core | 8-bit PIC RISC |
| Program Memory (Flash) | 64 KB (32K x 16) |
| RAM | 4 KB |
| Maximum CPU Frequency | 64 MHz (16 MIPS) |
| Supply Voltage | 2.0 V to 3.6 V |
| Package | 80-pin TQFP (PT) 12x12 mm |
| Operating Temperature | -40C to +85C (Industrial) |
| LCD Driver | Integrated, up to 368 segments |
| ADC | 12-bit, multi-channel |
| USB | USB 2.0 Full-Speed, host + device |
| Timers | 4 x 16-bit (8-bit/16-bit mode) |
| Touch Sensing | mTouch (CTMU-based) |
| Low-Power Technology | nanoWatt XLP |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC18F86J94-I/PT Pin Configuration
| Pin 1 | SEG0 — LCD segment output / I/O (PPS) |
| Pin 2 | SEG1 — LCD segment output / I/O (PPS) |
| Pin 3 | SEG2 — LCD segment output / I/O (PPS) |
| Pin 4 | SEG3 — LCD segment output / I/O (PPS) |
| Pin 5 | VDD — Core supply 2.0-3.6 V |
| Pin 6 | VSS — Ground reference |
| Pin 7 | OSC1/CLKI — Crystal input / external clock |
| Pin 8 | OSC2/CLKO — Crystal output / clock out |
| Pin 9 | MCLR — Master clear reset (active-low) |
| Pin 10 | RA0 — I/O / AN0 / CVREF |
| Pin 11 | RA1 — I/O / AN1 |
| Pin 12 | RA2 — I/O / AN2 / VREF- |
| Pin 13 | RA3 — I/O / AN3 / VREF+ |
| Pin 14 | RA4 — I/O / AN4 |
| Pin 15 | RA5 — I/O / AN5 |
| Pin 16 | RA6 — I/O / OSC2 |
| Pin 17 | RA7 — I/O / OSC1 |
| Pin 18 | VSS — Ground |
| Pin 19 | VDD — Core supply |
| Pin 20 | RB0 — I/O / INT0 / SEG30 |
| Pin 21 | RB1 — I/O / INT1 / SEG31 |
| Pin 22 | RB2 — I/O / INT2 / SEG32 |
| Pin 23 | RB3 — I/O / INT3 / SEG33 |
| Pin 24 | RB4 — I/O / KBI0 / SEG34 |
| Pin 25 | RB5 — I/O / KBI1 / SEG35 |
| Pin 26 | RB6 — I/O / KBI2 / SEG36 |
| Pin 27 | RB7 — I/O / KBI3 / SEG37 |
| Pin 28 | RC0 — I/O / T1OSO / SEG38 |
| Pin 29 | RC1 — I/O / T1OSI / SEG39 |
| Pin 30 | RC2 — I/O / CCP1 / SEG40 |
| Pin 31 | RC3 — I/O / SCL1 / SEG41 |
| Pin 32 | RC4 — I/O / SDA1 / SEG42 |
| Pin 33 | RC5 — I/O / CCP2 / SEG43 |
| Pin 34 | RC6 — I/O / TX1 / CK1 / SEG44 |
| Pin 35 | RC7 — I/O / RX1 / DT1 / SEG45 |
| Pin 36 | RD0 — I/O / SEG46 |
| Pin 37 | RD1 — I/O / SEG47 |
| Pin 38 | RD2 — I/O / SEG48 |
| Pin 39 | RD3 — I/O / SEG49 |
| Pin 40 | RD4 — I/O / SEG50 |
| Pin 41 | RD5 — I/O / SEG51 |
| Pin 42 | RD6 — I/O / SEG52 |
| Pin 43 | RD7 — I/O / SEG53 |
| Pin 44 | RE0 — I/O / AN6 / SEG54 |
| Pin 45 | RE1 — I/O / AN7 / SEG55 |
| Pin 46 | RE2 — I/O / AN8 / SEG56 |
| Pin 47 | RE3 — I/O / AN9 / SEG57 |
| Pin 48 | RE4 — I/O / AN10 / SEG58 |
| Pin 49 | RE5 — I/O / AN11 / SEG59 |
| Pin 50 | RE6 — I/O / AN12 / SEG60 |
| Pin 51 | RE7 — I/O / AN13 / SEG61 |
| Pin 52 | VSS — Ground |
| Pin 53 | VDD — Core supply |
| Pin 54 | RF0 — I/O / SEG62 |
| Pin 55 | RF1 — I/O / SEG63 / C2OUT |
| Pin 56 | RF2 — I/O / SEG64 |
| Pin 57 | RF3 — I/O / SEG65 |
| Pin 58 | RF4 — I/O / SEG66 |
| Pin 59 | RF5 — I/O / SEG67 |
| Pin 60 | RF6 — I/O / SEG68 |
| Pin 61 | RF7 — I/O / SEG69 |
| Pin 62 | RG0 — I/O / SEG70 |
| Pin 63 | RG1 — I/O / SEG71 |
| Pin 64 | RG2 — I/O / SEG72 |
| Pin 65 | RG3 — I/O / SEG73 |
| Pin 66 | RG4 — I/O / SEG74 |
| Pin 67 | RG5 — I/O / SEG75 |
| Pin 68 | RG6 — I/O / SEG76 |
| Pin 69 | RG7 — I/O / SEG77 |
| Pin 70 | RH0 — I/O / SEG78 |
| Pin 71 | RH1 — I/O / SEG79 |
| Pin 72 | RH2 — I/O / SEG80 |
| Pin 73 | RH3 — I/O / SEG81 |
| Pin 74 | RH4 — I/O / SEG82 |
| Pin 75 | RH5 — I/O / SEG83 |
| Pin 76 | RH6 — I/O / SEG84 |
| Pin 77 | RH7 — I/O / SEG85 |
| Pin 78 | VSS — Ground |
| Pin 79 | VDD — Core supply |
| Pin 80 | AVDD — Analog supply (tie to VDD or filter) |
Typical Applications
PIC18F86J94-I/PT is suitable for 6 applications: USB-Connected Thermostats, Battery-Powered Utility Meters, Portable Medical / Fitness Devices, White-Goods HMI Panels, USB Sensor Hubs / Data Loggers, Industrial Control Panels with LCD.
USB-Connected Thermostats
The PIC18F86J94-I/PT's integrated USB 2.0 Full-Speed host/device PHY plus segmented LCD driver (up to 368 segments) make it ideal for residential and commercial thermostats with on-screen HMI and USB firmware update ports. With 64 KB Flash and 4 KB RAM it fits a USB CDC stack, segmented-LCD driver, and Modbus schedule logic. nanoWatt XLP deep-sleep current below 100 nA with LCD retention lets the thermostat run 5+ years on two AA cells between user interactions, while the 80-pin TQFP exposes enough I/O for multi-button keypads, NTC sensor inputs, and triac outputs without external I/O expanders.
Recommended
Battery-Powered Utility Meters
For electricity, water, and gas meters with no mains power, the PIC18F86J94-I/PT pairs a wide 2.0-3.6 V supply range with nanoWatt XLP sleep currents under 100 nA. The integrated segmented LCD driver eliminates a separate LCD controller IC, reducing BOM cost and idle current. 4 KB RAM is ample for rolling consumption logs and an RTC calendar; the 16 MIPS throughput handles metrology math and pulse counting in real time. The 80-pin TQFP exposes enough I/O for tamper switches, optical pulse sensors, and a low-power NB-IoT or sub-GHz module driven from a UART.
Recommended
Portable Medical / Fitness Devices
The PIC18F86J94-I/PT suits portable medical and fitness devices such as blood-pressure monitors, glucose meters, and pedometers where small BOM count, long battery life, and an integrated LCD drive matter most. mTouch capacitive touch sensing via the CTMU removes mechanical buttons, while the 12-bit ADC captures pressure, SpO2, or impedance signals with adequate resolution for clinical-grade measurements. nanoWatt XLP deep-sleep plus LCD retention extends battery life beyond 12 months on coin cells. The 64 KB Flash holds USB device stacks plus application code with room to spare.
Recommended
White-Goods HMI Panels
Washing machines, dishwashers, and ovens need a segmented LCD plus a USB service port, and the PIC18F86J94-I/PT delivers both without external chips. The 368-segment LCD driver powers 7-segment and icon glass at 3.3 V, the CTMU-based mTouch peripheral reads capacitive buttons reliably through 3 mm glass, and the USB 2.0 device port enables field firmware upgrades without opening the appliance. The 80-pin TQFP footprint provides enough I/O to drive triac-based motor/valve control, keypads, encoder wheels, and buzzer feedback with peripheral pin-select (PPS) flexibility.
Recommended
USB Sensor Hubs / Data Loggers
The PIC18F86J94-I/PT is well-suited to USB-attached sensor hubs and portable data loggers that bridge multiple analog/digital sensors to a host PC. Its USB 2.0 Full-Speed device interface enumerates as CDC, HID, or vendor class without an external PHY. With 4 KB RAM the chip buffers multi-sensor reads while the 12-bit ADC scans up to 16 analog channels; nanoWatt XLP sleep lets the hub idle below 100 nA between host polls. The 64 KB Flash hosts a USB stack plus sensor drivers, leaving space for application logic and OTA-capable bootloaders.
Recommended
Industrial Control Panels with LCD
For industrial control panels requiring both a numeric segmented LCD and rich digital I/O, the PIC18F86J94-I/PT provides 368 LCD segments, mTouch buttons, USB host/device, and ample timers for PWM control loops. The 2.0-3.6 V supply simplifies integration with 3.3 V industrial sensor rails. Up to 16 ADC channels read 4-20 mA loops through external shunt resistors. The 80-pin TQFP exposes up to 69 I/O (subject to datasheet verification) and peripheral pin-select (PPS) routes UART/SPI/I2C to any pin, simplifying PCB routing on crowded backplanes.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F86J94-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F86J94T-I/PT | PIC18F85J94-I/PT | PIC18F86J72-I/PT | PIC18F85K90-I/PT | PIC18F86J55-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-80 (PT) | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same |
| Program Memory | 64 KB | 64 KB (same die) | 64 KB | 128 KB | 32 KB | 64 KB |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB | 2 KB | 4 KB |
| USB Support | Host + Device (FS) | Host + Device (FS) | Host + Device (FS) | Device only | No USB | Device only |
| LCD Segments (max) | 368 | 368 | 368 | 368 | 192 | 368 |
| Supply Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 1.8 V to 5.5 V | 2.0 V to 3.6 V |
| Core Architecture | PIC18J (8-bit) | PIC18J (8-bit) | PIC18J (8-bit) | PIC18J (8-bit) | PIC18 K-series (8-bit, CIP) | PIC18J (8-bit) |
| Unit Price (USD, qty 1) | 7.20 | 7.20 (same die) | approx. 7.00 | approx. 8.50 | approx. 6.20 | approx. 6.90 |
Key Differentiators
- Integrated USB 2.0 Full-Speed Host + Device/OTG (vs PIC18F86J72-I/PT)
- 368-segment LCD driver at 2.0-3.6 V (vs PIC18F85K90-I/PT)
- nanoWatt XLP deep-sleep under 100 nA with LCD retention (vs PIC18F86J65-I/PT)
Design Notes
Estimated: at VDD=3.3 V and FOSC=64 MHz with all peripherals active, core current is approximately 30-40 mA. For USB applications, supply ripple must stay below 50 mVpp; use a 10 uF + 0.1 uF ceramic decoupling pair within 5 mm of every VDD/VSS pin pair. The 3.2 V on-chip LDO powers the LCD charge pump independently, so LCD brightness is decoupled from VDD sag. nanoWatt XLP deep-sleep with LCD retention draws under 100 nA, but verify leakage budget against the chosen RTC and external pull-ups.
Estimated: the 80-pin TQFP (PT) at 12x12 mm has 0.5 mm pitch. Use a 4-layer stack-up with continuous ground beneath the package to keep return paths short for USB DP/DM. Keep the 48 MHz-related traces (USB DP/DM, crystal, PLL filter) shorter than 25 mm; place the 12 MHz crystal within 6 mm of OSC1/OSC2 with a grounded guard ring. Provide a 4.7 uF bulk cap adjacent to AVDD and a ferrite bead from digital VDD to keep ADC noise below 1 LSB at 12 bits.
Do not drive 5 V signals directly into the PIC18F86J94-I/PT - the PIC18J I/O is not 5 V tolerant. Add a level translator (e.g., TXB0108) or series resistor divider. The USB D+/D- lines require 15 kohm pull-downs on device mode or pull-ups to VDD on host mode; the part does not provide these internally. Configure the on-chip regulator for 3.2 V operation before enabling the LCD charge pump, otherwise contrast suffers at low VDD. Finally, the PLL needs a minimum 2.0 V supply to lock reliably - operation below 2.0 V will cause USB enumeration failures.
Compliance Information
RoHS/REACH compliant per Microchip product page. Industrial-grade -40C to +85C. Not AEC-Q100 qualified (use automotive PIC18F variants where required).
