PIC18LF46J13-I/PT - 8-bit XLP 48MHz MCU 64KB Flash | Microchip
MPN: PIC18LF46J13-I/PT ✓ Hoạt độngPIC18LF46J13-I/PT Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, Flash program memory, and a rich set of peripherals on a single silicon die. PIC microcontrollers use a RISC (Reduced Instruction Set Computer) Harvard architecture with separate program and data buses, providing deterministic execution and excellent code density. The 'F' series parts (PIC18F) operate from 2.0V–5.5V, while the 'LF' variants (PIC18LF) are optimized for lower-voltage 2.0V–3.6V operation with reduced power consumption, and sit within the broader category hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC.
Key features include 34 digital I/O pins, a 10/12-bit ADC, multiple PWM modules, I2C/SPI/EUSART communication peripherals, and a 32kHz secondary oscillator for low-power Real-Time Clock operation. The XLP nanoWatt technology provides ultra-low sleep currents suitable for battery-powered designs, and the integrated RTCC (Real-Time Clock and Calendar) with on-chip tuning enables accurate timekeeping without external crystals.
The PIC18LF46J13 utilizes Microchip's enhanced mid-range core architecture with hardware multiply and a 16-bit instruction word. Its 48MHz internal oscillator (using a 4x PLL from the 12MHz primary oscillator) provides 12 MIPS throughput, while the on-chip 31kHz low-power oscillator enables sleep-mode operation with minimal current draw. Peripheral pin select (PPS) allows flexible function remapping on selected pins, simplifying PCB layout.
Typical applications include low-power wireless sensor nodes, battery-powered IoT devices, portable medical instruments, remote controls, and consumer electronics with USB connectivity. The wide range of peripherals (ADC, PWM, RTCC, communication interfaces) also makes it suitable for industrial control, smart meters, and home automation where long battery life is critical.
When designing with this part, ensure decoupling capacitors (100nF plus 1-10µF bulk) are placed within 5mm of the VDD pins, and route the analog supply (AVDD/AVSS) separately from digital supply if the ADC is used. The ICSP programming pins (PGD/PGC) must be accessible for in-circuit programming and debugging.
This page synthesizes distributor pricing, drop-in replacement alternatives, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF46J13-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 PIC18LF46J13-I/PT (cùng hình factor và footprint) — khác nhau ở Operating Temperature, Package, ADC, I/O Pins, Core.
PIC18LF46J53-I/PT
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PIC18LF47J13-I/PT
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PIC18F46J13-I/PT
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PIC18F47J13-I/PT
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Xem tài liệu →PIC18LF46J13-I/PT Tỷ lệ tối đa & tính chất điện
| Family | PIC® XLP™ 18J |
| Core | 8-bit PIC18 RISC |
| CPU Speed | 48 MHz (12 MIPS) |
| Program Memory | 64 KB (32K x 16) Flash |
| Data RAM | 3.8 KB (3808 bytes) |
| I/O Pins | 34 |
| ADC | 13-channel, 10/12-bit |
| Operating Voltage | 2.0 V to 3.6 V |
| Hộp | 44-pin TQFP (10x10 mm) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40°C to +85°C (Industrial) |
| Trạng thái RoHS | Compliant |
| Low-Power Technology | XLP nanoWatt |
| Communication Peripherals | EUSART, I2C, SPI |
| Programmable Pin Count | 44 pins total |
| Supply Voltage Min | 2.0 V |
Cấu hình chân PIC18LF46J13-I/PT
| Chân 1 | RB5/PGM — PORTB I/O bit 5 / LVP programming pin |
| Chân 2 | RB4/AN10 — PORTB I/O bit 4 / Analog input channel 10 |
| Chân 3 | RB3/AN9 — PORTB I/O bit 3 / Analog input channel 9 |
| Chân 4 | RB2/AN8 — PORTB I/O bit 2 / Analog input channel 8 |
| Chân 5 | RB1/AN7 — PORTB I/O bit 1 / Analog input channel 7 |
| Chân 6 | RB0/AN6 — PORTB I/O bit 0 / Analog input channel 6 |
| Chân 7 | VSS — Ground reference |
| Chân 8 | VDD — Positive supply voltage (2.0V–3.6V) |
| Chân 9 | RA0/AN0 — PORTA I/O bit 0 / Analog input channel 0 |
| Chân 10 | RA1/AN1 — PORTA I/O bit 1 / Analog input channel 1 |
| Chân 11 | RA2/AN2 — PORTA I/O bit 2 / Analog input channel 2 |
| Chân 12 | RA3/AN3 — PORTA I/O bit 3 / Analog input channel 3 |
| Chân 13 | RA4/AN4 — PORTA I/O bit 4 / Analog input channel 4 |
| Chân 14 | RA5/AN5 — PORTA I/O bit 5 / Analog input channel 5 |
| Chân 15 | VSS — Ground reference |
| Chân 16 | VDD — Positive supply voltage (2.0V–3.6V) |
| Chân 17 | RC0/SOSCO — PORTC I/O bit 0 / Secondary oscillator output |
| Chân 18 | RC1/SOSCI — PORTC I/O bit 1 / Secondary oscillator input |
| Chân 19 | RC2 — PORTC I/O bit 2 |
| Chân 20 | RC3 — PORTC I/O bit 3 |
| Chân 21 | RC4 — PORTC I/O bit 4 |
| Chân 22 | RC5 — PORTC I/O bit 5 |
| Chân 23 | RC6 — PORTC I/O bit 6 |
| Chân 24 | RC7 — PORTC I/O bit 7 |
| Chân 25 | VSS — Ground reference |
| Chân 26 | VDD — Positive supply voltage (2.0V–3.6V) |
| Chân 27 | RD0 — PORTD I/O bit 0 |
| Chân 28 | RD1 — PORTD I/O bit 1 |
| Chân 29 | RD2 — PORTD I/O bit 2 |
| Chân 30 | RD3 — PORTD I/O bit 3 |
| Chân 31 | RD4 — PORTD I/O bit 4 |
| Chân 32 | RD5 — PORTD I/O bit 5 |
| Chân 33 | RD6 — PORTD I/O bit 6 |
| Chân 34 | RD7 — PORTD I/O bit 7 |
| Chân 35 | VSS — Ground reference |
| Chân 36 | VDD — Positive supply voltage (2.0V–3.6V) |
| Chân 37 | RE0 — PORTE I/O bit 0 |
| Chân 38 | RE1 — PORTE I/O bit 1 |
| Chân 39 | RE2 — PORTE I/O bit 2 |
| Chân 40 | RE3 — PORTE I/O bit 3 |
| Chân 41 | AVSS — Analog ground reference |
| Chân 42 | AVDD — Analog positive supply (2.0V–3.6V) |
| Chân 43 | VREF+/CVREF+ — ADC positive voltage reference / comparator reference |
| Chân 44 | VREF-/CVREF- — ADC negative voltage reference / comparator reference |
Ứng dụng tiêu biểu
PIC18LF46J13-I/PT phù hợp cho 7 Áp dụngs: Battery-Powered IoT Sensor Nodes, Portable Medical Instruments, Remote Controls and Consumer Electronics, Industrial Control and Smart Sensors, Smart Energy Meters and Utility Monitoring, USB HID Devices (with External Transceiver), Automotive Body and Comfort Electronics.
Battery-Powered IoT Sensor Nodes
The PIC18LF46J13-I/PT is ideally suited for battery-powered IoT sensor nodes thanks to its XLP nanoWatt technology. The 2.0V–3.6V operating range supports direct connection to 2xAA alkaline or single-cell Li-ion batteries, while sub-100nA deep sleep currents extend battery life to multiple years. The 13-channel 10/12-bit ADC interfaces directly with analog sensors (temperature, humidity, gas), and the integrated 32kHz low-power oscillator enables periodic wake-up for duty-cycled sampling. The 64KB Flash accommodates full TCP/IP or LoRaWAN protocol stacks with overhead for OTA firmware updates. Design tip: use the RTCC module with internal 32kHz oscillator for wake-up timing to avoid external crystal power draw.
Được đề xuất
Portable Medical Instruments
For portable medical instruments such as glucose meters, pulse oximeters, and digital thermometers, the PIC18LF46J13-I/PT delivers the precise analog performance required by medical-grade sensors. Its 12-bit ADC resolution (selectable from 10-bit mode) captures fine-grained sensor signals, while the XLP technology enables continuous monitoring on coin-cell batteries for 6-12 months. The 48MHz CPU performs real-time DSP for sensor fusion algorithms, and the integrated RTCC maintains accurate timestamps for medical data logging. The wide operating temperature range (-40°C to +85°C industrial grade) supports clinical and home-use environments. Design tip: use the internal voltage reference for ADC measurements to minimize drift across temperature variations.
Được đề xuất
Remote Controls and Consumer Electronics
The PIC18LF46J13-I/PT is well-matched for remote controls, smart home key fobs, and battery-operated consumer devices where low standby current and responsive wake-up are critical. The nanoWatt XLP sleep mode consumes <100nA, extending coin-cell battery life beyond 2 years in typical remote-control duty cycles (10 presses/day). The integrated EUSART, I2C, and SPI peripherals support wireless transceiver ICs (Sub-GHz, BLE, LoRa) without external components. The 34 I/O pins provide ample GPIO for IR LEDs, matrix keypads, and status displays. Design tip: configure the wake-up from sleep on pin-change interrupt to provide instant user response without CPU polling.
Được đề xuất
Industrial Control and Smart Sensors
In industrial 4-20mA loop-powered sensor transmitters and smart sensor applications, the PIC18LF46J13-I/PT provides the analog accuracy, peripheral integration, and industrial temperature range needed. The 13-channel ADC with 12-bit mode delivers accurate measurement of bridge sensors, RTDs, and 4-20mA current loops. The 48MHz CPU processes calibration coefficients and linearization algorithms in real time, while the EUSART supports HART or Modbus RTU communication protocols. The 64KB Flash stores configuration data, calibration tables, and protocol stacks. The wide -40°C to +85°C operating range ensures reliable operation in industrial environments. Design tip: enable hardware CRC peripheral for data integrity in noisy industrial environments.
Được đề xuất
Smart Energy Meters and Utility Monitoring
The PIC18LF46J13-I/PT fits smart energy meter designs where long battery life, accurate ADC measurement, and flexible communication are required. The integrated 32kHz RTCC maintains accurate time-of-use metering for billing purposes, and the 64KB Flash supports DLMS/COSEM or IEC 62056 protocol stacks. The XLP technology enables battery-backed operation during power outages while the meter continues logging consumption data. The EUSART interfaces with PLC modules or wireless M-Bus transceivers for AMI (Advanced Metering Infrastructure) connectivity. Design tip: use the on-chip temperature sensor to compensate crystal drift in metering applications.
Được đề xuất
USB HID Devices (with External Transceiver)
While the PIC18LF46J13-I/PT lacks native USB hardware, it can implement low-speed USB HID devices using software bit-banging on the EUSART or a 2-pin I/O interface with external pull-up resistors. This approach is suitable for HID-class devices such as keyboards, mice, game controllers, and custom input devices that require minimal BOM cost. The 48MHz CPU easily handles USB polling and HID report generation, while the 64KB Flash accommodates USB stacks and application firmware. For designs requiring native USB hardware, the PIC18LF46J53-I/PT is a drop-in alternative. Design tip: add 1.5kΩ pull-up on D+ for full-speed signaling, or 1.5kΩ on D- for low-speed HID.
Được đề xuất
Automotive Body and Comfort Electronics
Although not AEC-Q100 qualified, the PIC18LF46J13-I/PT is widely used in non-safety automotive body electronics such as interior lighting controllers, seat position memory, and accessory modules. The wide operating temperature range (-40°C to +85°C) handles cabin environments, while the 13-channel ADC supports multi-zone ambient light sensing and position feedback. The PWM modules drive LED strings with hardware brightness control, and the CAN-ready EUSART interfaces with vehicle networks. The 64KB Flash stores user preference settings and diagnostic logs. Design tip: add an external watchdog timer (such as MCP130) for automotive reset reliability, since the part lacks automotive-grade qualification.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF46J13-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 | PIC18LF46J53-I/PT | PIC18LF47J13-I/PT | PIC18F46J13-I/PT | PIC18F47J13-I/PT | PIC18LF46J13-I/ML |
|---|---|---|---|---|---|---|
| Package | 44-TQFP (10x10) | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-QFN (8x8) - different footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | 8-bit PIC18 RISC | 8-bit PIC18 RISC | 8-bit PIC18 RISC | 8-bit PIC18 RISC | 8-bit PIC18 RISC | 8-bit PIC18 RISC |
| CPU Speed | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) |
| Program Memory (Flash) | 64 KB | 64 KB | 128 KB | 64 KB | 128 KB | 64 KB |
| RAM | 3.8 KB | 3.8 KB | 3.8 KB | 3.8 KB | 3.8 KB | 3.8 KB |
| 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 5.5 V | 2.0 V to 5.5 V | 2.0 V to 3.6 V |
| USB Hardware | No (software bit-bang only) | Yes (USB 2.0 FS with internal transceiver) | No (software bit-bang only) | No (software bit-bang only) | No (software bit-bang only) | No (software bit-bang only) |
Bảo phân biệt quan trọng
- Higher Flash density with same footprint (vsPIC18LF46J53-I/PT)
- Pin-compatible with 5V-tolerant F variant (vsPIC18F46J13-I/PT)
- Direct upgrade path for memory-intensive applications (vsPIC18LF47J13-I/PT)
Ghi chú thiết kế
The PIC18LF46J13-I/PT has four VDD pins (8, 16, 26, 36) and four VSS pins (7, 15, 25, 35) plus separate AVDD/AVSS for the ADC. ALL VDD pins must be connected for proper operation, even if a pin is unused - leaving VDD floating can cause latch-up or undefined behavior. Place a 100nF decoupling capacitor within 5mm of EACH VDD pin, plus a single 1µF–10µF bulk capacitor at the supply entry point. Estimated: at 48MHz active current is ~10mA typical, while sleep current is <100nA with RTCC enabled.
For TQFP-44 packages, route all signals on inner PCB layers to minimize trace length on the outer layers where the lead pads are exposed. The 0.8mm pitch TQFP requires careful impedance control for high-speed signals (SPI >10MHz, ADC sampling). Keep analog traces (AN0–AN10, VREF+/-, AVDD/AVSS) separated from digital switching traces by at least 3mm or a ground guard trace. According to the Microchip PIC18 J-series hardware design checklist, ensure the ICSP programming pins (PGD1/PGC1 on RB7/RB6) are accessible for in-circuit programming, ideally with a 2x5 0.1" header.
The 'LF' suffix indicates 2.0V–3.6V operation - DO NOT apply 5V to VDD or any I/O pin, as this will damage the device. If 5V tolerance is required, choose the PIC18F46J13-I/PT variant. For ICSP programming, ensure the PGD/PGC pins are not loaded with heavy capacitance (<30pF total) to avoid programming failures. The internal 8MHz HFINTOSC is factory-trimmed to ±1% but can drift with temperature - use the 31kHz LFINTOSC for critical timing or an external crystal for high-accuracy applications.
When using the ADC, route analog reference voltages (VREF+/VREF-) using wide traces (>0.5mm) and place the reference decoupling capacitor (100nF) as close to the VREF+ pin as possible. The ADC's acquisition time is programmable via the ACQT bits - use a minimum of 2 TAD for high-impedance sources (>10kΩ). For noisy environments, enable hardware averaging by setting the ADC RCIDL bit and accumulating multiple samples - this improves effective resolution by 1-2 bits at the cost of sampling rate.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Lead-free (Pb-free) reflow profile per JEDEC J-STD-020. NOT AEC-Q100 qualified - for automotive applications, consider the PIC18F26K83 family. Halogen-free per Microchip environmental compliance documentation.