PIC18F86J94-I/PT - 8-bit 64KB Flash LCD USB MCU | Microchip
MPN: PIC18F86J94-I/PT ✓ Hoạt độngPIC18F86J94-I/PT Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC18F86J94-I/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18F86J94-I/PT (cùng hình factor và footprint) — khác nhau ở Package, ADC, Program Memory (Flash), Operating Temperature, Maximum CPU Frequency.
PIC18F86J94T-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F85J94-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F86J72-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F85K90-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F86J55-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F86J65-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F86J94-I/PT Tỷ lệ tối đa & tính chất điện
| 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) |
| Điện áp cung cấp | 2.0 V to 3.6 V |
| Hộp | 80-pin TQFP (PT) 12x12 mm |
| Nhiệt độ hoạt động | -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 |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18F86J94-I/PT
| Chân 1 | SEG0 — LCD segment output / I/O (PPS) |
| Chân 2 | SEG1 — LCD segment output / I/O (PPS) |
| Chân 3 | SEG2 — LCD segment output / I/O (PPS) |
| Chân 4 | SEG3 — LCD segment output / I/O (PPS) |
| Chân 5 | VDD — Core supply 2.0-3.6 V |
| Chân 6 | VSS — Ground reference |
| Chân 7 | OSC1/CLKI — Crystal input / external clock |
| Chân 8 | OSC2/CLKO — Crystal output / clock out |
| Chân 9 | MCLR — Master clear reset (active-low) |
| Chân 10 | RA0 — I/O / AN0 / CVREF |
| Chân 11 | RA1 — I/O / AN1 |
| Chân 12 | RA2 — I/O / AN2 / VREF- |
| Chân 13 | RA3 — I/O / AN3 / VREF+ |
| Chân 14 | RA4 — I/O / AN4 |
| Chân 15 | RA5 — I/O / AN5 |
| Chân 16 | RA6 — I/O / OSC2 |
| Chân 17 | RA7 — I/O / OSC1 |
| Chân 18 | VSS — Ground |
| Chân 19 | VDD — Core supply |
| Chân 20 | RB0 — I/O / INT0 / SEG30 |
| Chân 21 | RB1 — I/O / INT1 / SEG31 |
| Chân 22 | RB2 — I/O / INT2 / SEG32 |
| Chân 23 | RB3 — I/O / INT3 / SEG33 |
| Chân 24 | RB4 — I/O / KBI0 / SEG34 |
| Chân 25 | RB5 — I/O / KBI1 / SEG35 |
| Chân 26 | RB6 — I/O / KBI2 / SEG36 |
| Chân 27 | RB7 — I/O / KBI3 / SEG37 |
| Chân 28 | RC0 — I/O / T1OSO / SEG38 |
| Chân 29 | RC1 — I/O / T1OSI / SEG39 |
| Chân 30 | RC2 — I/O / CCP1 / SEG40 |
| Chân 31 | RC3 — I/O / SCL1 / SEG41 |
| Chân 32 | RC4 — I/O / SDA1 / SEG42 |
| Chân 33 | RC5 — I/O / CCP2 / SEG43 |
| Chân 34 | RC6 — I/O / TX1 / CK1 / SEG44 |
| Chân 35 | RC7 — I/O / RX1 / DT1 / SEG45 |
| Chân 36 | RD0 — I/O / SEG46 |
| Chân 37 | RD1 — I/O / SEG47 |
| Chân 38 | RD2 — I/O / SEG48 |
| Chân 39 | RD3 — I/O / SEG49 |
| Chân 40 | RD4 — I/O / SEG50 |
| Chân 41 | RD5 — I/O / SEG51 |
| Chân 42 | RD6 — I/O / SEG52 |
| Chân 43 | RD7 — I/O / SEG53 |
| Chân 44 | RE0 — I/O / AN6 / SEG54 |
| Chân 45 | RE1 — I/O / AN7 / SEG55 |
| Chân 46 | RE2 — I/O / AN8 / SEG56 |
| Chân 47 | RE3 — I/O / AN9 / SEG57 |
| Chân 48 | RE4 — I/O / AN10 / SEG58 |
| Chân 49 | RE5 — I/O / AN11 / SEG59 |
| Chân 50 | RE6 — I/O / AN12 / SEG60 |
| Chân 51 | RE7 — I/O / AN13 / SEG61 |
| Chân 52 | VSS — Ground |
| Chân 53 | VDD — Core supply |
| Chân 54 | RF0 — I/O / SEG62 |
| Chân 55 | RF1 — I/O / SEG63 / C2OUT |
| Chân 56 | RF2 — I/O / SEG64 |
| Chân 57 | RF3 — I/O / SEG65 |
| Chân 58 | RF4 — I/O / SEG66 |
| Chân 59 | RF5 — I/O / SEG67 |
| Chân 60 | RF6 — I/O / SEG68 |
| Chân 61 | RF7 — I/O / SEG69 |
| Chân 62 | RG0 — I/O / SEG70 |
| Chân 63 | RG1 — I/O / SEG71 |
| Chân 64 | RG2 — I/O / SEG72 |
| Chân 65 | RG3 — I/O / SEG73 |
| Chân 66 | RG4 — I/O / SEG74 |
| Chân 67 | RG5 — I/O / SEG75 |
| Chân 68 | RG6 — I/O / SEG76 |
| Chân 69 | RG7 — I/O / SEG77 |
| Chân 70 | RH0 — I/O / SEG78 |
| Chân 71 | RH1 — I/O / SEG79 |
| Chân 72 | RH2 — I/O / SEG80 |
| Chân 73 | RH3 — I/O / SEG81 |
| Chân 74 | RH4 — I/O / SEG82 |
| Chân 75 | RH5 — I/O / SEG83 |
| Chân 76 | RH6 — I/O / SEG84 |
| Chân 77 | RH7 — I/O / SEG85 |
| Chân 78 | VSS — Ground |
| Chân 79 | VDD — Core supply |
| Chân 80 | AVDD — Analog supply (tie to VDD or filter) |
Ứng dụng tiêu biểu
PIC18F86J94-I/PT phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F86J94-I/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Integrated USB 2.0 Full-Speed Host + Device/OTG (vsPIC18F86J72-I/PT)
- 368-segment LCD driver at 2.0-3.6 V (vsPIC18F85K90-I/PT)
- nanoWatt XLP deep-sleep under 100 nA with LCD retention (vsPIC18F86J65-I/PT)
Ghi chú thiết kế
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.
Thông tin tuân thủ
RoHS/REACH compliant per Microchip product page. Industrial-grade -40C to +85C. Not AEC-Q100 qualified (use automotive PIC18F variants where required).
