PIC18F66J55T-I/PT - 8-bit USB MCU, 96KB Flash, 48MHz | Microchip
Артикул: PIC18F66J55T-I/PT ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $9.12 | $9,12 |
| 10 | $8.21 | $82,10 |
| 100 | $7.34 | $734,00 |
| 500 | $6.58 | $3.290,00 |
| 1.000 | $5.92 | $5.920,00 |
PIC18F66J55T-I/PT Обзор
What is a PIC18 microcontroller? A PIC18 is Microchip's 8-bit advanced Harvard-architecture RISC MCU family, sitting in the broader taxonomy of microcontrollers -> 8-bit microcontrollers -> CMOS flash MCUs -> embedded controllers. The 'J' suffix denotes the 2.0V-3.6V/4.2V-5.5V wide-range low-power family with internal voltage regulator and nanoWatt sleep modes. The PIC18F66J55 specifically targets designs that need USB connectivity, ample code space, and rich peripheral integration without an external voltage regulator.
Key features include 96 KB (48K x 16) Flash program memory, 3936 bytes of RAM, 54 digital I/O pins, an integrated Full-Speed (12 Mbit/s) USB 2.0 device/host/OTG transceiver, two EUSART (LIN-capable) ports, a Master I2C port, and an SPI port capable of up to 10 Mbit/s. The device integrates a 10-bit ADC (up to 16 channels), multiple timers, and nanoWatt technology with Idle, Sleep, and deep-sleep modes for battery-friendly designs.
Technically, the PIC18F66J55 uses an enhanced Harvard architecture with 16-bit instructions and 8-bit data path, a 32-level hardware stack, and an 8x8 hardware multiply engine. The on-chip 2.5V core regulator simplifies 5V single-rail designs, eliminating external LDO requirements in most cases. CIP (Core Independent Peripherals) such as CWG, MSSP, and configurable logic cells offload tasks from the CPU, increasing deterministic response for USB, motor control, and sensor interfaces.
Typical applications include Full-Speed USB peripherals (HID, CDC, vendor-class devices), embedded human-interface boards with capacitive touch sensing, industrial sensor hubs with LIN/UART bridging, low-power data loggers, and consumer audio/control panels. The 64-pin TQFP footprint is friendly for hand-soldered prototypes and standard reflow production lines.
When designing with the PIC18F66J55, ensure VUSB 3.3V is properly decoupled for the internal transceiver and respect the absolute maximum VDD of 5.5V. The /MCLR reset line must be pulled up through a resistor for reliable operation. MPLAB X IDE with XC8 compiler is the recommended toolchain for firmware development and debugging via ICSP.
This page synthesizes distributor pricing, drop-in alternative analysis, and practical design notes not consolidated on the manufacturer datasheet or single distributor page.
Аналоги без доработки для PIC18F66J55T-I/PT — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с PIC18F66J55T-I/PT (тот же форм-фактор и посадочное место) — отличается по Operating Temperature, Package, ADC, I/O Pins, Program Memory (Flash).
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
PIC18F66J55-I/PT
✅ Прямая замена✓ В наличии
$4.31 / шт.
Открыть даташит →PIC18F66J50T-I/PT
✅ Прямая замена✓ В наличии
$5.1 / шт.
Открыть даташит →PIC18F65J50T-I/PT
✅ Прямая замена✓ В наличии
$3.3 / шт.
Открыть даташит →PIC18F66J55T-I/PT Максимальные параметры и электрические характеристики
| Core Architecture | PIC18 8-bit RISC, enhanced Harvard |
| Program Memory (Flash) | 96 KB (48K x 16 words) |
| Data RAM | 3936 bytes (3.8 KB) |
| Maximum CPU Speed | 48 MHz (12 MIPS) |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| I/O Pins | 54 digital I/O |
| USB Interface | USB 2.0 Full-Speed (12 Mbit/s), device/host/OTG |
| Serial Interfaces | 2x EUSART (LIN-capable), 1x I2C (Master), 1x SPI (up to 10 Mbit/s) |
| ADC | 10-bit, up to 16 channels |
| Timers | Multiple 8/16-bit timers with capture/compare |
| Корпус | TQFP-64 (PT), 10x10 mm |
| Тип монтажа | Surface Mount |
| Рабочая температура | -40C to +85C (Industrial) |
| Статус RoHS | Compliant |
Конфигурация выводов PIC18F66J55T-I/PT
| Контакт 1 | RC0/T1OSO/T1CKI — I/O port C0 / Timer1 oscillator output |
| Контакт 2 | RC1/T1OSI/CCP2 — I/O port C1 / Timer1 oscillator input / CCP2 |
| Контакт 3 | RC2/CCP1 — I/O port C2 / CCP1 |
| Контакт 4 | RC3 — I/O port C3 |
| Контакт 5 | RC4 — I/O port C4 |
| Контакт 6 | RC5 — I/O port C5 |
| Контакт 7 | RC6/TX1/CK1 — EUSART1 TX / clock |
| Контакт 8 | RC7/RX1/DT1 — EUSART1 RX / data |
| Контакт 9 | RE0/RD — I/O port E0 / parallel slave port read |
| Контакт 10 | RE1/WR — I/O port E1 / parallel slave port write |
| Контакт 11 | RE2/CS — I/O port E2 / chip select |
| Контакт 12 | VDD — Positive supply voltage |
| Контакт 13 | VSS — Ground reference |
| Контакт 14 | RB0/INT0 — I/O port B0 / external interrupt 0 |
| Контакт 15 | RB1/INT1 — I/O port B1 / external interrupt 1 |
| Контакт 16 | RB2/INT2 — I/O port B2 / external interrupt 2 |
| Контакт 17 | RB3/INT3 — I/O port B3 / external interrupt 3 |
| Контакт 18 | RB4 — I/O port B4 |
| Контакт 19 | RB5 — I/O port B5 |
| Контакт 20 | RB6/PGC — I/O port B6 / ICSP clock |
| Контакт 21 | RB7/PGD — I/O port B7 / ICSP data |
| Контакт 22 | VUSB — USB transceiver supply (3.3V internal regulator output) |
| Контакт 23 | D+/D- — Differential USB data lines |
| Контакт 24 | VDD — Positive supply voltage |
| Контакт 25 | VSS — Ground reference |
| Контакт 26 | RA0/AN0 — I/O port A0 / analog input 0 |
| Контакт 27 | RA1/AN1 — I/O port A1 / analog input 1 |
| Контакт 28 | RA2/AN2 — I/O port A2 / analog input 2 |
| Контакт 29 | RA3/AN3 — I/O port A3 / analog input 3 |
| Контакт 30 | RA4/AN4 — I/O port A4 / analog input 4 |
| Контакт 31 | RA5/AN5 — I/O port A5 / analog input 5 |
| Контакт 32 | RA6/OSC2 — I/O port A6 / crystal oscillator output |
| Контакт 33 | RA7/OSC1 — I/O port A7 / crystal oscillator input |
| Контакт 34 | VDD — Positive supply voltage |
| Контакт 35 | VSS — Ground reference |
| Контакт 36 | RD0 — I/O port D0 |
| Контакт 37 | RD1 — I/O port D1 |
| Контакт 38 | RD2 — I/O port D2 |
| Контакт 39 | RD3 — I/O port D3 |
| Контакт 40 | RD4 — I/O port D4 |
| Контакт 41 | RD5 — I/O port D5 |
| Контакт 42 | RD6 — I/O port D6 |
| Контакт 43 | RD7 — I/O port D7 |
| Контакт 44 | VSS — Ground reference |
| Контакт 45 | RF0 — I/O port F0 |
| Контакт 46 | RF1 — I/O port F1 |
| Контакт 47 | RF2 — I/O port F2 |
| Контакт 48 | RF3 — I/O port F3 |
| Контакт 49 | RF4 — I/O port F4 |
| Контакт 50 | RF5 — I/O port F5 |
| Контакт 51 | RF6 — I/O port F6 |
| Контакт 52 | RF7 — I/O port F7 |
| Контакт 53 | RG0 — I/O port G0 |
| Контакт 54 | RG1 — I/O port G1 |
| Контакт 55 | RG2 — I/O port G2 |
| Контакт 56 | RG3 — I/O port G3 |
| Контакт 57 | RG4 — I/O port G4 |
| Контакт 58 | AVDD — Analog positive supply voltage |
| Контакт 59 | AVSS — Analog ground reference |
| Контакт 60 | RH0 — I/O port H0 |
| Контакт 61 | RH1 — I/O port H1 |
| Контакт 62 | RH2 — I/O port H2 |
| Контакт 63 | RH3 — I/O port H3 |
| Контакт 64 | MCLR — Master clear (reset) input |
Типичное применение
PIC18F66J55T-I/PT подходит для 6 применениеs: USB HID Peripherals (Keyboards / Mice / Custom HID), USB CDC Virtual COM Port Bridges, Industrial Sensor Hubs with LIN/UART Bridging, Capacitive Touch User Interfaces, Low-Power Data Loggers with USB Upload, Consumer Audio/Visual Control Panels.
USB HID Peripherals (Keyboards / Mice / Custom HID)
The PIC18F66J55T-I/PT is ideally suited for USB HID class devices because it integrates a Full-Speed USB 2.0 transceiver with on-chip pull-up resistors and a 48 MHz clock that meets the USB 12 Mbit/s timing spec with zero external components. With 96 KB Flash and 3.8 KB RAM, it comfortably hosts HID report descriptors, multi-endpoint buffers, and application logic for keyboards, mice, game controllers, and vendor-specific HID devices. Its 54 I/O pins support matrix-scanning key arrays, RGB LED PWM channels, and capacitive touch sensing. According to the Microchip USB stack guidelines, this part supports Microchip's free MLA USB framework, eliminating the need for a commercial RTOS.
Рекомендуется
USB CDC Virtual COM Port Bridges
For USB-to-UART bridge designs, the PIC18F66J55T-I/PT provides Full-Speed USB plus two hardware EUSART channels, enabling simultaneous USB CDC and UART routing. The 96 KB Flash accommodates the CDC class driver, bootloader, and command parser; the 3936-byte RAM is sufficient for line-codec buffers and CDC notification endpoints. With its 5V-tolerant I/O, the MCU can interface directly to RS-232 or RS-485 transceivers without level shifting. Compared to discrete USB-to-UART bridge ICs, this part adds free GPIO and an extra UART for sensor aggregation.
Рекомендуется
Industrial Sensor Hubs with LIN/UART Bridging
The PIC18F66J55T-I/PT's two LIN-capable EUSART channels make it a strong fit for industrial sensor hubs that bridge LIN bus nodes to a USB-connected host or a higher-level controller. The 10-bit ADC with up to 16 channels supports analog sensor arrays (temperature, pressure, current) alongside the digital interfaces, and the 54 I/O drive sensor enables logic, relay coils, and indicator LEDs without extra drivers. The industrial -40C to +85C temperature rating covers factory-floor deployments, while the nanoWatt sleep modes reduce quiescent draw below 100 nA for battery-backed sensor nodes.
Рекомендуется
Capacitive Touch User Interfaces
With 54 I/O and CTMU (Charge Time Measurement Unit) hardware, the PIC18F66J55T-I/PT supports mTouch capacitive touch sensing on up to 32 channels without an external touch controller. The 96 KB Flash allows sophisticated gesture recognition, debounce algorithms, and user feedback state machines; the 3.8 KB RAM holds scan buffers and filter history. Its Full-Speed USB simplifies connection to a host PC for tuning or HID reporting. Compared to discrete touch ICs, this single-chip solution reduces BOM, PCB area, and firmware complexity for appliances, lighting controls, and consumer electronics.
Рекомендуется
Low-Power Data Loggers with USB Upload
The PIC18F66J55T-I/PT's nanoWatt technology (Idle, Sleep, deep-sleep modes) plus Full-Speed USB suits battery-powered data loggers that record to internal Flash or external EEPROM and upload via USB when docked. The 96 KB Flash doubles as program and log storage, while the 3936-byte RAM buffers sample frames between writes. The 5V VDD range simplifies charging and Li-ion regulation. With wake-on-timer and wake-on-USART features, the device achieves multi-year battery life in periodic-sampling applications like environmental monitors or asset trackers.
Рекомендуется
Consumer Audio/Visual Control Panels
The PIC18F66J55T-I/PT serves consumer A/V control panels (volume knobs, EQ displays, smart-home hubs) where USB connectivity, ample I/O for rotary encoders and RGB LEDs, and enough Flash for menu-driven UI are required. The 10-bit ADC reads potentiometers and analog sensors; the MSSP peripheral drives SPI displays. Compared to a separate MCU plus USB bridge, the integrated design reduces board cost and shortens firmware development time using Microchip's free MLA framework. The TQFP-64 footprint is well-suited to small-form-factor handheld controllers.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC18F66J55T-I/PT — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | PIC18F66J55-I/PT | PIC18F66J50T-I/PT | PIC18F65J50T-I/PT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (PT) | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same |
| Program Flash | 96 KB | 96 KB | 64 KB (-33%) | 32 KB (-67%) |
| RAM | 3936 bytes | 3936 bytes | 3936 bytes | 3936 bytes |
| Maximum Clock | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| USB 2.0 Full-Speed | Yes (integrated) | Yes | Yes | Yes |
| I/O Pins | 54 | 54 | 54 | 44 |
| Supply Voltage | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Ключевые отличия
- Highest-density USB MCU in the PIC18F66J55 TQFP-64 footprint (против PIC18F65J50T-I/PT)
- Full 96 KB Flash matches PIC18F66J55-I/PT (против PIC18F66J50T-I/PT)
- Same die as PIC18F66J55-I/PT (tray vs T&R only) (против PIC18F66J55-I/PT)
Заметки по проектированию
Decouple each VDD/VSS pair with 100 nF ceramic placed within 5 mm of the pin. For USB operation, add a 4.7 uF bulk capacitor on VUSB (pin 22) to stabilize the internal 3.3V LDO that powers the USB transceiver. The internal voltage regulator draws the entire core from VDD, so VDD noise above 50 mV ripple can couple into USB signaling - keep digital switching traces away from VDD traces.
Route the 90-ohm differential D+/D- USB pair with matched length within 150 mil and continuous ground reference plane beneath. Place the USB connector close to the MCU to minimize stub length. Use a 2-layer minimum stack-up with solid ground pour; 4-layer with dedicated VDD plane is preferred for EMI. According to the USB 2.0 specification, the D+/D- characteristic impedance should be 90 ohms differential.
Do not exceed VDD = 5.5V absolute maximum, or the internal 3.3V regulator will latch up. Always pull MCLR (pin 64) high through a 10 kohm resistor for reliable reset. Disable the internal USB pull-up resistor via firmware before entering deep sleep to avoid back-powering through the USB cable. Ensure ICSP pins RB6/RB7 are not driven by external circuitry during programming, or use isolation resistors.
The 48 MHz internal oscillator provides adequate accuracy for USB Full-Speed 12 Mbit/s signaling without an external crystal. If using an external crystal for tighter timing, place the crystal within 5 mm of OSC1/OSC2 (pins 32/33) and guard the traces with a grounded ring. According to the datasheet, EC mode with 48 MHz external clock is recommended for synchronized multi-MCU USB applications.
Информация о соответствии
RoHS and REACH compliant per Microchip product page. Industrial temperature grade -40C to +85C. Not AEC-Q100 qualified - choose PIC18F46J50-I/PT or PIC18F65K80T-I/PT for automotive applications.