PIC18F65J15-I/PT - 8-bit MCU, 48KB Flash, 40MHz, 64-TQFP | Microchip
MPN: PIC18F65J15-I/PT ✓ Hoạt độngPIC18F65J15-I/PT Tóm tắt
An 8-bit PIC microcontroller is a CMOS-based microcontroller built on a Modified Harvard architecture that separates program and data memory for simultaneous instruction fetch and data access. PIC18F devices target cost-sensitive embedded designs that need a balance of moderate Flash, multi-channel peripheral integration, and a deterministic instruction set familiar to PIC ecosystem users; PIC18J variants specifically use 3.3V-only supply with the analog and digital peripherals tuned for low-voltage operation.
Key features of the PIC18F65J15 include 54 digital I/O pins, two USART modules with LIN support, one MSSP (configurable as I2C or SPI), one enhanced USART, an 8-channel 10-bit ADC, two analog comparators, four 16-bit timers and three CCP modules, and an ICD (In-Circuit Debugger) interface. The integrated 31 kHz to 8 MHz internal oscillator and NanoWatt power management allow high-performance execution with low standby power, while the parallel master/slave PSP port allows direct interface with external bus devices.
Architecturally, the PIC18F65J15 uses a single-cycle ALU and pipeline that delivers up to 10 MIPS at 40 MHz. The 16-bit instruction word provides C-compiler-friendly addressing modes and a software stack that scales with the application's call depth. On-chip peripherals (ADC, comparators, PWM) share an analog ground AGND that is internally tied to Vss to minimize pin count - a characteristic engineers must consider when designing PCB decoupling.
Typical applications for the PIC18F65J15-I/PT include automotive body and HVAC control, industrial sensor and motor control, USB-less human-machine interface (HMI) panels, RS-232/RS-485 industrial networked sensor nodes, and general-purpose embedded control. The two asynchronous ports (LIN-capable) suit automotive door modules, dashboard clusters, and seat controller modules.
Key design considerations include ensuring the supply rail sits within 2.0V to 3.6V (transceivers on the same PCB should match the 3.3V domain, and a separate LDO may be required to drop a 5V rail to 3.3V). Additionally, for code protection features on the J family, in-circuit programming (ICSP) requires careful trace management around the PGC/PGD pins to prevent interference with peripherals.
This page synthesizes distributor pricing, parametric comparison, and practical PCB design notes beyond the manufacturer datasheet to accelerate the PIC18F65J15-I/PT evaluation cycle for engineers sourcing 3.3V 8-bit MCUs.
Bộ thay thế dễ dàng lắp đặt cho PIC18F65J15-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 PIC18F65J15-I/PT (cùng hình factor và footprint) — khác nhau ở ADC, Package, Timers, Operating Temperature, RoHS Status.
PIC18F65J11-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F65J10-I/PT
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Xem tài liệu →PIC18F65J10T-I/PT
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Xem tài liệu →PIC18F65J15-I/PT Tỷ lệ tối đa & tính chất điện
| Core | PIC18 (8-bit RISC Harvard) |
| Program Memory (Flash) | 48 KB (24K x 16 instructions) |
| SRAM | 3.9 KB |
| EEPROxM Emulation | Internal (Flash-backed) |
| Maximum Clock Speed | 40 MHz (10 MIPS) |
| Supply Voltage (Vdd) | 2.0 V to 3.6 V |
| I/O Pins | 54 |
| ADC | 1 x 10-bit, 8 channels |
| Timers | 4 x 16-bit |
| CCP Modules | 3 (Capture/Compare/PWM) |
| Enhanced CCP (ECCP) | 1 |
| USART (LIN-capable) | 2 (EUSART) |
| MSSP | 1 (I2C / SPI) |
| Comparators | 2 analog |
| Parallel Port (PSP) | Yes (master/slave) |
| Nhiệt độ hoạt động | -40C to +85C (industrial) |
| Hộp | 64-pin TQFP (PT), 10 x 10 mm |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (168 hours) |
| Trạng thái RoHS | Compliant |
| ICSP Debug | Yes (ICD interface) |
Hướng dẫn cấu hình chân PIC18F65J15-I/PT 64-pin tqfp (pt), 10 x 10 mm
Cấu hình chân cho PIC18F65J15-I/PT (64-pin tqfp (pt), 10 x 10 mm gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho PIC18F65J15-I/PT.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
PIC18F65J15-I/PT phù hợp cho 6 Áp dụngs: Industrial RS-485 Sensor Nodes, Automotive Body Control Modules, HMI Control Panels with Character LCDs, Motor Control and PWM Drives, Data Logging and Sensor Conditioning, Consumer Electronics with I2C Sensor Hubs.
Industrial RS-485 Sensor Nodes
The PIC18F65J15-I/PT's dual EUSART (LIN-capable) modules make it well-suited for industrial RS-485 sensor nodes polled by a central PLC or SCADA controller. At 40 MHz, the 10 MIPS throughput handles Modbus RTU request parsing, analog sensor conditioning via the 8-channel 10-bit ADC, and CRC checking in real time. The 2.0V to 3.6V supply range matches 3.3V RS-485 transceivers such as the MAX3485 without requiring a separate LDO. Engineers should configure the second EUSART for hardware flow control and use the 16-bit timers for precise inter-frame silence timing to ensure Modbus spec compliance.
Được đề xuất
Automotive Body Control Modules
The PIC18F65J15-I/PT is widely deployed in automotive body control modules for lighting, mirror positioning, and seat control, owing to its two LIN-capable EUSART channels that handle LIN 1.3/2.0 masters and slaves. With 54 I/O pins, the device can directly drive multiple relay outputs and switch-matrix inputs without external I/O expanders, reducing BOM cost. The integrated 16-bit timers and three CCP/PWM modules provide flexible PWM generation for LED dimming and motor control. For under-hood or safety-critical applications, designers should select AEC-Q100 qualified members from the PIC18F family K-series, but the J15 covers ambient-temperature body electronics reliably.
Được đề xuất
HMI Control Panels with Character LCDs
For human-machine interface (HMI) panels driving character LCDs and small graphic OLEDs, the PIC18F65J15-I/PT's 48 KB Flash and 3.9 KB SRAM provide ample space for custom fonts, multi-language strings, and state machine implementations. The four 16-bit timers decouple backlight PWM, debounce scheduling, and button scanning while the parallel master/slave PSP port enables high-throughput interface with external SRAM or character LCD controllers. The 54 I/O pins comfortably handle a 4x4 matrix keypad plus a 20x4 LCD. Designers should budget Flash for additional menu trees and use the internal EEPROM emulation to store user-configurable parameters.
Được đề xuất
Motor Control and PWM Drives
With three CCP modules plus one enhanced ECCP module, the PIC18F65J15-I/PT is well-suited for low-cost brushed DC motor control and small BLDC commutation using the ECCP's PWM with hardware dead-band. The 16-bit timer resolution enables precise PWM frequency generation above the audible band, while the integrated analog comparators provide overcurrent protection feedback without ADC latency. Combined with the 8-channel 10-bit ADC for back-EMF sensing, the PIC18F65J15 can implement sensored or sensorless BLDC control loops for small fans, pumps, and valves. Thermal dissipation across the TQFP-64 package should be analyzed when driving high-current FETs.
Được đề xuất
Data Logging and Sensor Conditioning
The PIC18F65J15-I/PT's 48 KB Flash and 3.9 KB SRAM with internal Flash-backed EEPROM emulation make it ideal for stand-alone data logging applications that periodically sample analog sensors and store records to external EEPROM or SD cards via SPI. The MSSP port runs SD card SPI mode at clock rates up to 10 MHz, while an additional ADC channel reads voltage or current signals. With NanoWatt sleep currents below 10 uA, the PIC18F65J15 can be battery-powered for remote installations, waking on timer overflow or external interrupt to log data. The 8-channel ADC provides adequate density for multi-parameter transducers.
Được đề xuất
Consumer Electronics with I2C Sensor Hubs
The PIC18F65J15-I/PT is well-suited for consumer electronics hubs that aggregate I2C sensors, capacitive touch buttons, and EEPROM devices via its MSSP peripheral running I2C master/slave at up to 400 kHz. The 48 KB Flash accommodates BLE module command sets and OTA update loaders while keeping pin count manageable at 54 I/O. The two analog comparators enable low-battery detection and USB-powered vs battery-powered rail switching. Designers should reserve 2 KB of Flash for bootloader and ensure the ICSP PGC/PGD pins do not conflict with ISP peripherals on the application board layout.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F65J15-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 | PIC18F65J11-I/PT | PIC18F65J10-I/PT | PIC18F65J10T-I/PT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (PT, 10x10 mm) | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same |
| Flash Memory | 48 KB | 32 KB | 32 KB | 32 KB |
| SRAM | 3.9 KB | 3.9 KB | 3.9 KB | 3.9 KB |
| Max Clock Speed | 40 MHz (10 MIPS) | 40 MHz | 40 MHz | 40 MHz |
| 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 |
| I/O Pins | 54 | 54 | 54 | 54 |
| ADC | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels |
| EUSART (LIN) | 2 | 2 | 2 | 2 |
Bảo phân biệt quan trọng
- Largest Flash in the PIC18F65Jxx family (vsPIC18F65J10-I/PT)
- Dual EUSART with LIN hardware support (vsPIC18F46K22-I/P)
- Parallel Slave Port (PSP) on 54 I/O pins (vsPIC18F46J13-I/ML)
- Industrial temperature range plus active lifecycle (vsPIC18F65J50 (legacy))
Ghi chú thiết kế
The PIC18F65J15-I/PT requires a tightly regulated 3.3V rail between 2.0V and 3.6V. When powered from a 5V system, place a low-dropout LDO such as MCP1700 adjacent to the MCU Vdd pins; bulk-decouple with a 10 uF ceramic plus 0.1 uF bypass within 5 mm of each Vdd pin. AGND must be tied directly to the star-ground node and not be allowed to carry noisy switching return currents. NanoWatt sleep current is sub-10 uA but only achievable with all peripherals disabled via the PMD registers.
Reserve an unshared, isolated area of the PCB for ICSP programming - the PGC and PGD pins must not have multiplexed peripherals that interfere during programming. Place a 100 ohm series resistor on each ICSP line close to the MCU and 4k7 pull-ups on MCLR to Vdd. For analog accuracy, route ADC channels as short as possible with a dedicated analog ground plane and keep the AVDD feed separate from digital VDD until they meet at the LDO output bulk cap.
The MSSP peripheral in I2C mode requires 4.7 kohm to 10 kohm pull-up resistors on SCL and SDA with rise times under 1 us for 400 kHz Fast-mode. For SPI interfacing at higher speeds above 5 MHz, add 22-33 ohm series resistors on CLK, MOSI, and MISO traces near the driver to dampen ringing from the bus capacitance. RS-485 outputs from the EUSART must be routed to a transceiver IC - never connect EUSART pins directly to a differential bus.
Estimated: enabling Brown-out Reset (BOR) below 2.0V prevents Flash corruption during power-down; default may be disabled, so enable BOR in CONFIG3H. Code protection features on Microchip devices must be enabled only after prototype firmware is finalized - debugging with code protection on requires full-chip erase. Stack overflow in interrupt handlers can corrupt the PIC18F hardware stack - monitor the STKPTR register and size interrupts for worst-case depth.
TQFP-64 packages have moderate thermal performance suitable for industrial operation when the device is operated within its -40C to +85C rating. Active current draw peaks around 15 mA at 40 MHz across all peripherals resulting in ~50 mW dissipation per the datasheet; in a properly designed 4-layer PCB with internal ground plane the junction-to-ambient rise remains below 5C. For sustained high-performance operation, ensure 1 oz copper pours cover at least 50% of the package footprint to maintain thermal margin.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip material declarations. Industrial -40C to +85C temperature rating. AEC-Q100 qualified variants available with -Q1 suffix ordering code for automotive designs requiring certified safety compliance.
