PIC18LF26J53T-I/ML - 64KB Flash USB MCU, 28-QFN | Microchip
Артикул: PIC18LF26J53T-I/ML ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $3.1 | $3,10 |
| 10 | $2.79 | $27,90 |
| 100 | $2.45 | $245,00 |
| 500 | $2.18 | $1.090,00 |
| 1.000 | $1.95 | $1.950,00 |
PIC18LF26J53T-I/ML Обзор
What is a PIC18 microcontroller? PIC18 microcontrollers are 8-bit RISC microcontrollers from Microchip built on a Harvard architecture with a modified instruction set. They integrate Flash program memory, RAM, EEPROM, peripheral modules, and in many variants a USB transceiver, all on a single die. In the system hierarchy, a PIC18 sits below 16-bit dsPIC and 32-bit SAM/ARM Cortex-M parts but offers excellent code density, mature tooling, and integrated peripherals at very low cost.
Key features of the PIC18LF26J53 include a 12-bit A/D converter with up to 10 channels, multiple serial interfaces (I2C/SPI/UART), an Enhanced USART, a 10-bit DAC reference, internal 31 kHz and 8 MHz oscillators, and up to 22 I/O pins. The integrated USB 2.0 full-speed transceiver with on-chip pull-ups simplifies USB device designs by eliminating external transceivers and reducing BOM cost. The 12 MIPS execution rate supports real-time control loops and USB enumeration without bottlenecks.
The architecture combines a 16-bit instruction word with an 8-bit data path, an 8x8 hardware multiplier, a 4-deep FIFO for the A/D converter, and a priority interrupt controller. The internal voltage regulator of the J53 family can be configured for 2.5 V or 3.3 V core operation, and the wide I/O tolerance allows direct interface to 5 V peripherals in mixed-voltage systems when the regulator is properly bypassed.
Typical applications include USB peripherals (HID, CDC, MSD), battery-powered sensor hubs, home automation controllers, low-cost data loggers, and small industrial HMI panels where the USB interface is the primary desktop-side connection and on-board peripherals drive actuators and displays. The 28-QFN footprint is also footprint-compatible with several other PIC18F2xJ53 variants, enabling easy migration across the family.
When designing with this part, ensure the VUSB pin is connected to the USB VBUS through the internal pull-up configuration (per datasheet section 2.0 'Typical Application Connection'), and place the decoupling capacitor on VCAP/VDDCORE within 5 mm of the pin. A pull-up on MCLR is required if the device is used in production; tying MCLR directly to VDD prevents reliable reset behavior.
Аналоги без доработки для PIC18LF26J53T-I/ML — 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 PIC18LF26J53T-I/ML (тот же форм-фактор и посадочное место) — отличается по ADC, Package, Core Architecture, Operating Temperature, I/O Pins.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
PIC18LF26J53-I/ML
✅ Прямая замена✓ В наличии
$2.35 / шт.
Открыть даташит →PIC18F26J53-I/ML
✅ Прямая замена✓ В наличии
$2.45 / шт.
Открыть даташит →PIC18F26J53T-I/ML
✅ Прямая замена✓ В наличии
$2.61 / шт.
Открыть даташит →PIC18LF26J53T-I/ML Максимальные параметры и электрические характеристики
| Core Architecture | 8-bit PIC (Harvard, RISC) |
| Family | PIC18F/LFxxJ53 |
| Program Memory (Flash) | 64 KB |
| Data RAM | 4 KB |
| Operating Voltage | 2.0 V to 2.75 V (LF range) |
| Maximum CPU Speed | 12 MIPS (48 MHz Fosc) |
| ADC | 10-channel, 12-bit |
| USB | USB 2.0 Full-Speed transceiver, internal pull-ups |
| Digital I/O Pins | 22 I/O |
| Timers | 4 (Timer0/1/2/3) |
| Serial Interfaces | I2C, SPI, Enhanced USART |
| Рабочая температура | -40 C to +85 C (Industrial) |
| Корпус | 28-pin QFN (ML), 6x6 mm |
| Тип монтажа | Surface Mount |
| Статус RoHS | Compliant |
Конфигурация выводов PIC18LF26J53T-I/ML
| Контакт 1 | RB4 — Digital I/O / interrupt-on-change |
| Контакт 2 | RB3 — Digital I/O |
| Контакт 3 | RB2 — Digital I/O |
| Контакт 4 | RB1 — Digital I/O / SCL2 |
| Контакт 5 | RB0 — Digital I/O / INT0 |
| Контакт 6 | VUSB — USB internal 3.3V regulator output (bypass with 100nF) |
| Контакт 7 | D- — USB D- line |
| Контакт 8 | D+ — USB D+ line |
| Контакт 9 | RC6 — Digital I/O / TX1 |
| Контакт 10 | RC7 — Digital I/O / RX1 |
| Контакт 11 | RC5 — Digital I/O / SDO |
| Контакт 12 | RC4 — Digital I/O / SDA1 |
| Контакт 13 | RC3 — Digital I/O / SCL1 |
| Контакт 14 | RC2 — Digital I/O / SDA2 |
| Контакт 15 | RC1 — Digital I/O / CCP2 |
| Контакт 16 | RC0 — Digital I/O |
| Контакт 17 | OSC2 — Crystal oscillator output |
| Контакт 18 | OSC1 — Crystal oscillator input / CLKIN |
| Контакт 19 | VDD — Positive supply voltage (2.0-2.75V) |
| Контакт 20 | VSS — Ground reference |
| Контакт 21 | RB7 — Digital I/O |
| Контакт 22 | RB6 — Digital I/O / ICSPCLK |
| Контакт 23 | RB5 — Digital I/O / ICSPDAT |
| Контакт 24 | RA7 — Digital I/O |
| Контакт 25 | RA6 — Digital I/O / OSC2 |
| Контакт 26 | RA5 — Digital I/O |
| Контакт 27 | RA3 — Digital I/O / AN3 |
| Контакт 28 | VCAP — Internal voltage regulator bypass (connect 1uF-10uF) |
Типичное применение
PIC18LF26J53T-I/ML подходит для 7 применениеs: USB HID Peripheral (Keyboard/Mouse/Custom HID), USB CDC Virtual COM Port (Data Acquisition), USB Mass Storage / Bootloader Loader Device, Battery-Powered Sensor Hub, Home Automation Bridge / Edge Controller, Industrial HMI / Operator Panel, Educational / Maker USB Development Board.
USB HID Peripheral (Keyboard/Mouse/Custom HID)
The PIC18LF26J53T-I/ML is purpose-built for USB Human Interface Device (HID) class peripherals such as keyboards, mice, touch controllers, and custom input devices. Its integrated USB 2.0 Full-Speed transceiver with on-chip pull-up resistor eliminates the external USB PHY and pull-up resistor that older MCUs required, reducing BOM cost and PCB area. With 64 KB Flash it comfortably hosts the Microchip MLA HID bootloader plus application code and HID Report descriptors. The 4 KB RAM handles HID buffers and the USB endpoint RAM. The LF voltage range (2.0-2.75 V) supports USB bus-powered devices powered directly from VBUS through a low-dropout regulator, ideal for low-power peripherals that enumerate from a USB port without external power. A typical circuit places the D+/D- lines directly on the chip, decouples VUSB with 100 nF, and uses the internal regulator for clean USB signalling.
Рекомендуется
USB CDC Virtual COM Port (Data Acquisition)
The PIC18LF26J53T-I/ML is an excellent fit for USB Communication Device Class (CDC) virtual COM port designs that bridge a desktop application to sensor or actuator electronics. The integrated USB transceiver and Microchip's MLA CDC stack provide a serial-port-over-USB interface at up to 12 Mbps Full-Speed, supporting data rates up to ~1 MB/s with the on-chip 64-byte endpoint RAM. The 12-bit ADC with 10 channels captures analog sensor data, while the 4 KB RAM buffers bursts before USB packet transmission. The LF range (2.0-2.75 V) suits battery-powered handheld data loggers or pocket-size instruments powered from USB. The integrated 8 MHz/31 kHz internal oscillators eliminate the external crystal, reducing part count to just the MCU, decoupling caps, and USB connector. The 22 I/O pins drive LEDs, buttons, and a small OLED for HMI.
Рекомендуется
USB Mass Storage / Bootloader Loader Device
The PIC18LF26J53T-I/ML implements Microchip's MSD-class bootloader to upgrade firmware over USB without an external programmer. The 4 KB RAM and 64 KB Flash can host the full MSD or HID bootloader plus an application image, with the 4 KB boot block reserved at the top of Flash for bootloader code. The integrated USB transceiver with internal pull-up enables direct USB connection without external components. Designers typically reserve the top 4 KB of Flash for bootloader and use ICSP for initial programming, then update firmware via USB MSD drag-and-drop. The 28-QFN (ML) 6x6 mm package footprint is compatible with several other PIC18F2xJ53 family members, allowing different memory configurations on the same PCB.
Рекомендуется
Battery-Powered Sensor Hub
The PIC18LF26J53T-I/ML's LF 2.0-2.75 V operation supports a single Li-ion cell down to its discharge plateau, maximizing usable capacity before cutoff. The integrated 12-bit ADC with 10 channels reads temperature, humidity, voltage, and analog sensor bridges, while the 4 KB RAM holds measurement rings buffers between USB or wireless transmits. The LF range's lower quiescent current versus the F variant makes this MCU attractive for always-on sensor nodes that spend most of their time in sleep. The integrated USB transceiver enables occasional USB connection for data download or charging without a second MCU. The 28-QFN 6x6 mm footprint fits inside small sensor pods, wearable enclosures, or USB stick form-factor data loggers.
Рекомендуется
Home Automation Bridge / Edge Controller
The PIC18LF26J53T-I/ML serves as a USB-attached home automation bridge, controlling relays, dimmers, and sensor interfaces while presenting a CDC or HID interface to a host computer or single-board computer. The 22 digital I/O pins handle button inputs, LED indicators, and direct MOSFET drive for low-side switching. The EUSART, SPI, and I2C peripherals connect to external radios (nRF24, LoRa modules), EEPROM, or display drivers. The integrated USB transceiver connects the bridge directly to a Raspberry Pi or PC for control software integration. The 2.0-2.75 V range supports USB bus-powered operation from a host, or local 3.3 V regulation with a small LDO, simplifying the power architecture.
Рекомендуется
Industrial HMI / Operator Panel
The PIC18LF26J53T-I/ML is suitable for low-cost industrial operator panels with USB service ports and digital/relay control. The 22 I/O drive LEDs, key matrices, and small OLED or character LCDs, while the integrated USB port is used by field engineers for firmware update via a notebook computer. The 12 MIPS CPU executes keypad scanning, debouncing, and simple menu logic without latency. The -40 C to +85 C industrial temperature rating supports factory floor deployment. The 64 KB Flash hosts an industrial protocol lite (Modbus RTU over EUSART) plus the application HMI code. The 28-QFN package is reflow-compatible and suited to automated assembly lines. The LF voltage range pairs well with USB bus power from a service laptop.
Рекомендуется
Educational / Maker USB Development Board
The PIC18LF26J53T-I/ML is well suited to low-cost USB-enabled educational development boards such as PICDEM or custom maker-class boards. The integrated USB transceiver eliminates external USB components, reducing BOM cost and complexity for students. The 64 KB Flash stores demo applications, USB HID/CDC class examples, and free Microchip MLA libraries. The LF range allows operation from a single 3.3 V regulator or directly from a USB port. The 28-QFN (6x6 mm) is footprint-compatible with several PIC18F2xJ53 family variants, enabling educational expansion across different memory and peripheral configurations on the same PCB. The MPLAB X IDE and XC8 toolchain are free, making this an accessible teaching platform for embedded USB and microcontroller fundamentals.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC18LF26J53T-I/ML — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | PIC18LF26J53-I/ML | PIC18F26J53-I/ML | PIC18F26J53T-I/ML |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-QFN (ML, 6x6 mm) | 28-QFN (ML, 6x6 mm) - same | 28-QFN (ML, 6x6 mm) - same | 28-QFN (ML, 6x6 mm) - same |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB |
| Operating Voltage | 2.0 V to 2.75 V (LF) | 2.0 V to 2.75 V (LF) | 2.0 V to 3.6 V (F) | 2.0 V to 3.6 V (F) |
| USB Transceiver | USB 2.0 Full-Speed integrated | USB 2.0 Full-Speed integrated | USB 2.0 Full-Speed integrated | USB 2.0 Full-Speed integrated |
| ADC | 10-channel 12-bit | 10-channel 12-bit | 10-channel 12-bit | 10-channel 12-bit |
| Packaging | Tape & Reel (T) | Tube (no T) | Tube (no T) | Tape & Reel (T) |
| CPU Performance | 12 MIPS | 12 MIPS | 12 MIPS | 12 MIPS |
Ключевые отличия
- Integrated USB 2.0 Full-Speed transceiver with internal pull-up (против PIC18F25K22T-I/ML)
- Low-voltage (LF) 2.0-2.75V range for single-cell Li-ion operation (против PIC18F26J53T-I/ML)
- 64 KB Flash with USB boot-block bootloader support (против PIC18LF26J50T-I/ML)
- 28-QFN (ML) 6x6 mm footprint compatible with F and LF J53 family (против PIC18F46J53T-I/ML)
Заметки по проектированию
Estimated power analysis: PIC18LF26J53T-I/ML draws approximately 9 mA active at 48 MHz / 2.5 V and 0.1 uA in sleep. Place a 10 uF low-ESR ceramic on VCAP (pin 28) within 5 mm of the pad, and decouple each VDD/VSS pair with 100 nF + 1 uF. The VUSB internal 3.3 V USB regulator (when used) needs a 100 nF bypass on VUSB. For USB bus-powered designs, place the D+/D- traces with 90-ohm differential impedance and route them parallel, length-matched within 2 mm.
The 28-QFN (ML, 6x6 mm) package has an exposed thermal pad on the bottom that MUST be soldered to the PCB ground plane. The pad reduces thermal resistance and provides the primary ground return for high-speed USB signalling. Recommended PCB footprint per Microchip 28-QFN application note: 0.4 mm pad pitch, 0.25 mm pad width, with a 4.5x4.5 mm center pad with thermal vias. Failure to solder the center pad may cause overheating during sustained USB traffic.
For reliable USB Full-Speed signalling, route the D+ and D- lines as a 90-ohm differential pair with controlled impedance, keeping them length-matched within 2 mm. Avoid running D+/D- parallel to noisy switching lines (DC-DC, motor drivers); use ground as a shield. Place a common-mode choke or ferrite on VBUS near the connector for ESD and EMI suppression. Add 27 ohm series resistors on D+/D- close to the MCU if the layout exceeds 25 mm trace length to the connector.
Common pitfalls: (1) Forgetting the VCAP bypass cap - the internal regulator will not start cleanly and USB enumeration fails. (2) Not connecting the QFN center pad - causes thermal issues and signal-integrity degradation. (3) Using 5V-tolerant I/O on this 2.75V-max LF variant - exceed VDD+0.3V on any pin and the I/O latch-up may damage the MCU; use a level shifter to interface 5V peripherals. (4) Missing MCLR pull-up - production boards require a 10 kohm pull-up on MCLR/VPP/RA3 for reliable reset.
Информация о соответствии
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC18F26J53-I/ML automotive variants for automotive applications. Halogen-free status not explicitly stated in the provided data.
