PIC18F45J10-I/ML - 8-bit 40MHz 32KB Flash MCU | Microchip
Артикул: PIC18F45J10-I/ML ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $3.85 | $3,85 |
| 10 | $3.5 | $35,00 |
| 100 | $3.1 | $310,00 |
| 500 | $2.78 | $1.390,00 |
| 1.000 | $2.45 | $2.450,00 |
PIC18F45J10-I/ML Обзор
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), and peripheral interfaces (ADC, timers, communication ports) on one die. Within Microchip's taxonomy, the PIC18F45J10 belongs to the PIC18 family -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. The 'J' suffix indicates a 2.0-3.6V nanoWatt variant, while 'F45' identifies the 32 KB Flash / 1024 RAM device, and 'J10' designates the specific peripheral set.
Key differentiating features include nanoWatt power modes for battery-aware applications, hardware-realized I2C address masking for multi-slave buses, and the LIN-capable enhanced USART which simplifies automotive sub-bus implementation. The emulated EEPROM eliminates the need for an external serial EEPROM in data-logging subsystems, reducing BOM cost.
Architecturally, the PIC18J10 family uses an enhanced Harvard architecture with a 16-bit instruction word and an 8-bit data path, plus a hardware multiplier that accelerates arithmetic operations versus the legacy PIC16 baseline. Internal RC oscillator options (31 kHz, 8 MHz with PLL) reduce external component count.
Typical applications include home appliances, low-cost sensor nodes, industrial control panels, automotive body controllers via LIN, USB-to-UART bridges (using a companion TUSB chip), and battery-powered metering. The wide peripheral mix also supports small displays and keypad scanners.
Designers should budget for decoupling on every VDD/VSS pair, route the ICSP/ICD pins to a 6-pin header for in-circuit debugging, and confirm that any 5V peripherals on the bus are level-shifted to the 3.3V MCU rail. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Аналоги без доработки для PIC18F45J10-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 PIC18F45J10-I/ML (тот же форм-фактор и посадочное место) — отличается по Package, Core Architecture, Operating Temperature, Data EEPROM, I/O Pins.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
PIC18F45J10T-I/ML
✅ Прямая замена✓ В наличии
$2.18 / шт.
Открыть даташит →PIC18F45J10-I/PT
✅ Прямая замена✓ В наличии
$2.3 / шт.
Открыть даташит →PIC18F46J10-I/ML
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PIC18F44J10-I/PT
✅ Прямая замена✓ В наличии
$3.1 / шт.
Открыть даташит →PIC18F45K22-I/ML
✅ Прямая замена✓ В наличии
$2.65 / шт.
Открыть даташит →PIC18F4455-I/ML
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PIC18F45J10-I/ML Максимальные параметры и электрические характеристики
| Core Architecture | 8-bit PIC18 enhanced Harvard |
| Program Memory (Flash) | 32 KB (16K x 16) |
| Data SRAM | 1024 bytes |
| Data EEPROM | Emulated in Flash |
| Maximum CPU Frequency | 40 MHz |
| Operating Voltage | 2.0 V to 3.6 V |
| Flash Endurance | 1k erase/write cycles |
| I/O Pins | 32 (digital) |
| ADC | 10-bit, up to 13 channels |
| Timers | 4 (Timer0/1/2/3) |
| Enhanced USART | 1 (LIN master/slave capable) |
| MSSP (SPI / I2C) | 2 (I2C with address masking) |
| Корпус | 44-QFN (8x8 mm) |
| Тип монтажа | Surface Mount |
| Рабочая температура | -40C to +85C (Industrial, 'I') |
| Уровень MSL | 3 (168 hours) |
| Статус RoHS | Compliant |
Конфигурация выводов PIC18F45J10-I/ML
| Контакт 1 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| Контакт 2 | RA3/AN3/VREF+ — Port A bit 3 / Analog input 3 / VREF+ |
| Контакт 3 | RA4/AN4 — Port A bit 4 / Analog input 4 |
| Контакт 4 | RA5/AN5/SS1 — Port A bit 5 / Analog input 5 / SPI1 slave select |
| Контакт 5 | VDD — Positive supply (3.3V) |
| Контакт 6 | VSS — Ground |
| Контакт 7 | RA7/OSC1/CLKI — Port A bit 7 / Crystal input / External clock |
| Контакт 8 | RA6/OSC2/CLKO — Port A bit 6 / Crystal output / Clock out |
| Контакт 9 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator out / Timer1 clock in |
| Контакт 10 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator in / CCP2 |
| Контакт 11 | RC2/CCP1 — Port C bit 2 / CCP1 |
| Контакт 12 | RC3/SCK1/SCL1 — Port C bit 3 / SPI1 clock / I2C1 clock |
| Контакт 13 | RC4/SDI1/SDA1 — Port C bit 4 / SPI1 data in / I2C1 data |
| Контакт 14 | RC5/SDO1 — Port C bit 5 / SPI1 data out |
| Контакт 15 | RC6/TX1/CK1 — Port C bit 6 / EUSART1 transmit / clock |
| Контакт 16 | RC7/RX1/DT1 — Port C bit 7 / EUSART1 receive / data |
| Контакт 17 | RB0/INT0/FLT0 — Port B bit 0 / External interrupt 0 / PWM fault |
| Контакт 18 | RB1/INT1 — Port B bit 1 / External interrupt 1 |
| Контакт 19 | RB2/INT2 — Port B bit 2 / External interrupt 2 |
| Контакт 20 | RB3/INT3 — Port B bit 3 / External interrupt 3 |
| Контакт 21 | RB4 — Port B bit 4 (interrupt-on-change) |
| Контакт 22 | RB5 — Port B bit 5 (interrupt-on-change) |
| Контакт 23 | RB6/PGC — Port B bit 6 / ICSP clock (programming/debug) |
| Контакт 24 | RB7/PGD — Port B bit 7 / ICSP data (programming/debug) |
| Контакт 25 | VDD — Positive supply (3.3V) |
| Контакт 26 | VSS — Ground |
| Контакт 27 | RD0/PSP0 — Port D bit 0 / Parallel slave port data 0 |
| Контакт 28 | RD1/PSP1 — Port D bit 1 / Parallel slave port data 1 |
| Контакт 29 | RD2/PSP2 — Port D bit 2 / Parallel slave port data 2 |
| Контакт 30 | RD3/PSP3 — Port D bit 3 / Parallel slave port data 3 |
| Контакт 31 | RD4/PSP4 — Port D bit 4 / Parallel slave port data 4 |
| Контакт 32 | RD5/PSP5 — Port D bit 5 / Parallel slave port data 5 |
| Контакт 33 | RD6/PSP6 — Port D bit 6 / Parallel slave port data 6 |
| Контакт 34 | RD7/PSP7 — Port D bit 7 / Parallel slave port data 7 |
| Контакт 35 | RE0/RD — Port E bit 0 / Parallel slave port read strobe |
| Контакт 36 | RE1/WR — Port E bit 1 / Parallel slave port write strobe |
| Контакт 37 | RE2/CS — Port E bit 2 / Parallel slave port chip select |
| Контакт 38 | VDD — Positive supply (3.3V) |
| Контакт 39 | VSS — Ground |
| Контакт 40 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Контакт 41 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Контакт 42 | VDD — Positive supply (3.3V) |
| Контакт 43 | VSS — Ground |
| Контакт 44 | AN6/AN7 — Analog inputs 6 and 7 (QFN shared pin) |
Типичное применение
PIC18F45J10-I/ML подходит для 6 применениеs: Industrial Sensor Nodes, Home Appliance Control Panels, Automotive LIN Body Controllers, Battery-Powered Metering, USB-to-UART Bridge / HID Devices, Small Display and Keypad Scanners.
Industrial Sensor Nodes
The PIC18F45J10-I/ML fits industrial 4-20mA sensor interfaces where 3.3V-only operation, 32 KB Flash, and 10-bit ADC are sufficient. The 10-bit ADC with up to 13 channels handles multiple analog sensor inputs (temperature, pressure, flow) without external muxing, while the nanoWatt sleep mode drops quiescent current to microamp levels for battery-backed installations. The 40 MHz CPU executes linearization routines and MODBUS RTU framing over the enhanced USART in real time. Two MSSP peripherals let the node talk to an I2C local display while driving an SPI sensor on the same bus.
Рекомендуется
Home Appliance Control Panels
In washing machines, dishwashers, and HVAC thermostats, the PIC18F45J10-I/ML provides the central control loop. Its 32 KB Flash accommodates complex state-machine firmware, segmented-LCD driving via I/O expansion, and user-button debouncing. The 2.0-3.6V supply aligns directly with 3.3V LDO rails commonly used in white goods. The emulated EEPROM in Flash eliminates external parts for storing user preferences and fault logs. Industrial temperature grade (-40C to +85C) supports unheated garages and outdoor enclosures.
Рекомендуется
Automotive LIN Body Controllers
The enhanced USART with LIN master/slave capability makes the PIC18F45J10-I/ML well suited to LIN-based body-electronics nodes such as door modules, mirror controllers, and seat-position switches. Operating from 3.3V with industrial-grade temperature range, it integrates cleanly into sub-bus architectures off a central body controller. The 10-bit ADC reads switch contact voltages and potentiometer wiper positions, while the two MSSP ports drive local I2C peripherals like LED drivers and EEPROM. 1k Flash endurance is adequate for firmware-updatable nodes.
Рекомендуется
Battery-Powered Metering
For battery-powered water/gas/electricity meters, the PIC18F45J10-I/ML leverages nanoWatt sleep modes to extend coin-cell or lithium-thionyl service life into multi-year ranges. The 32 KB Flash stores accumulated consumption logs and tamper-detection state, with the emulated EEPROM providing non-volatile calibration parameters. The 10-bit ADC directly digitizes low-impedance current-shunt or Hall-sensor outputs without a preamp. SPI MSSP connects to a wireless M-Bus or LoRa transceiver for AMI backhaul.
Рекомендуется
USB-to-UART Bridge / HID Devices
Although the PIC18F45J10 lacks on-chip USB, pairing it with a Microchip MCP2200 or MCP2221 USB-to-UART bridge creates a low-cost serial debug or HID interface. The MCU handles protocol parsing while the bridge chip manages USB enumeration. The 40 MHz CPU supports up to 1 Mbaud UART traffic without bottlenecks, and 32 KB Flash accommodates CDC/USB class firmware when the MCU handles bridge duties itself. This combination targets less-expensive alternatives to native-USB PIC18F4550 designs.
Рекомендуется
Small Display and Keypad Scanners
The PIC18F45J10-I/ML drives character LCDs and scans 4x4 or 8x8 key matrices in operator-interface panels. With 32 digital I/O lines available on the 44-pin QFN, the MCU directly multiplexes 7-segment displays or character LCDs without external drivers. Timer-based interrupt routines refresh displays without CPU overhead, and I2C address masking lets multiple identical peripherals share a single bus. 32 KB Flash is generous for menu-handling and Unicode lookup-table firmware.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC18F45J10-I/ML — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | PIC18F45J10T-I/ML | PIC18F46J10-I/ML | PIC18F44J10-I/PT | PIC18F45K22-I/ML | PIC18F4455-I/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-TQFP - same family, different footprint | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same |
| Program Memory (Flash) | 32 KB | 32 KB | 64 KB | 16 KB | 32 KB | 24 KB |
| RAM | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes | 2048 bytes | 2048 bytes |
| Maximum CPU Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 64 MHz | 48 MHz |
| Operating 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 5.5 V |
| USB Controller | None | None | None | None | None | USB 2.0 FS |
| ADC | 10-bit, up to 13 channels | 10-bit, up to 13 channels | 10-bit, up to 13 channels | 10-bit, up to 13 channels | 10-bit, up to 19 channels | 10-bit, up to 13 channels |
Ключевые отличия
- No USB controller vs PIC18F4455-I/ML (против PIC18F4455-I/ML)
- Wider 1.8-5.5V operation vs PIC18F45K22-I/ML (против PIC18F45K22-I/ML)
- 32 KB Flash vs PIC18F46J10-I/ML 64 KB (против PIC18F46J10-I/ML)
Заметки по проектированию
Place a 100 nF decoupling capacitor as close as possible to each VDD/VSS pin pair on the PIC18F45J10-I/ML, plus a bulk 10 uF tantalum or ceramic at the regulator output. The 44-QFN exposes four VDD and four VSS pins; bypassing every pair is mandatory per Microchip datasheet 39682E. A common pitfall is to share a single bulk cap across the entire chip - the resulting voltage droop during CCP/PWM transitions can corrupt ADC readings and cause brown-out resets.
The QFN-44 exposed thermal pad (EP) on the PIC18F45J10-I/ML must be soldered to a copper plane with an array of thermal vias (typically 9 to 16, 0.3 mm drill). Without proper EP soldering, mechanical stress on the package and thermal performance both suffer. The pad should connect to the same ground plane used for VSS pins. Ensure the PCB land pattern follows Microchip's recommended footprint in the package drawing, including corner pad shapes for reliable solder fillet formation.
Operating the PIC18F45J10-I/ML above 3.6V damages the device - the J10 family is rated 2.0V-3.6V only. If a 5V rail is present in your design, level-shift any signal that crosses to 5V peripherals using a dedicated level shifter or resistor divider. A common mistake is to assume PIC18 pinout compatibility with the K22 family; while both have 44-QFN options, the analog pin assignments and peripheral mappings differ. Also note that emulated EEPROM in Flash requires wear-leveling firmware to achieve endurance beyond the 1k spec.
Route the ICSP/ICD pins (RB6/PGC and RB7/PGD) to a 6-pin header on the PCB edge for in-circuit programming and debugging. Keep the trace lengths short (<50 mm) and avoid routing noisy signals adjacent to these lines. For crystals, place the load capacitors within 3 mm of the OSC1/OSC2 pins with a symmetric ground pour beneath. The analog AVdd pin (if used) should be filtered through a ferrite bead from the digital VDD, per the datasheet's analog layout guidelines.
Информация о соответствии
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - for automotive safety-critical applications choose AEC-Q100-qualified PIC18 variants. Industrial-grade temperature range (-40C to +85C) only.