PIC18LF46J13T-I/PT - 64KB Flash 8-bit XLP MCU | Microchip 44-TQFP
N.º de pieza: PIC18LF46J13T-I/PT ✓ ActivoPIC18LF46J13T-I/PT Descripción general
An 8-bit microcontroller (MCU) is a small computing system on a single integrated circuit that integrates a CPU, RAM, Flash/ROM program memory, peripherals, and I/O. Within the broader MCU taxonomy, the PIC18 architecture sits between baseline PIC10/12/16 parts and the more advanced PIC24/dsPIC line, combining C-friendly Harvard architecture, RISC-like instruction set, and ample peripherals. The PIC18LF46J13T-I/PT targets general-purpose (GP) embedded control where low power, ample code space, and integrated analog are required.
Key features include 64KB Flash with self-programming capability, 4KB RAM, 10-bit/12-bit ADC with 13 input channels, multiple timers (8-bit and 16-bit), two comparators, Capture/Compare/PWM (ECCP) modules, I²C, SPI, and enhanced USART. The nanoWatt XLP technology delivers sub-µA sleep currents suitable for energy harvesting and remote-sensor nodes. Memory endurance is rated at 100K erase/write cycles minimum, and Flash retention is specified at 20 years typical.
Technically, the device uses a 16-bit instruction word with a 2-stage pipeline, executes most instructions in one cycle, and supports hardware multipliers for 8 × 8 single-cycle unsigned math. Three hardware interrupt sources and 256-byte data EEPROM round out the embedded feature set. The 44-pin TQFP exposes 34 digital I/O pins plus dedicated analog and oscillator functions.
Typical applications include portable medical devices, environmental sensor hubs, smart thermostats, USB-key peripherals, and industrial HMI panels. The wide operating temperature range (-40 °C to +85 °C industrial) covers outdoor and factory-floor deployments.
A key design consideration: although this is the LF (low-voltage) variant, the F variant (PIC18F46J13T-I/PT) covers the 2.15V–3.6V range with slightly different electrical characteristics — verify Vdd margin against worst-case ADC reference noise before board bring-up.
This page synthesizes drop-in alternatives, comparison data, and practical design notes not found on standard distributor listings.
Alternativas directas para PIC18LF46J13T-I/PT — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
PIC18F46J13T-I/PT
✅ Sustitución directaConsulte el precio
Ver hoja de datos →PIC18LF46J13-I/PT
✅ Sustitución directaConsulte el precio
Ver hoja de datos →PIC18LF46J50-I/PT
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC18LF46K22T-I/PT
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC18LF46J13T-I/PT Valores máximos y características eléctricas
| Product Family | PIC® XLP™ 18J |
| Core Size | 8-bit |
| Core Processor | PIC |
| Program Memory Size | 64 KB (32K × 16) Flash |
| RAM Size | 4 KB |
| Frecuencia de reloj máxima | 48 MHz |
| Instruction Throughput | 12 MIPS |
| Supply Voltage (Vdd) | 2.0 V to 3.6 V |
| I/O Pins | 34 |
| ADC | 12-bit, up to 13 channels |
| Connectivity | I²C, SPI, UART/USART |
| Temperatura de funcionamiento | -40 °C to +85 °C (Industrial) |
| Encapsulado | 44-pin TQFP (10 × 10 mm) |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
Configuración de pines de PIC18LF46J13T-I/PT
| Pin 1 | MCLR — Master Clear (Reset) input, active low |
| Pin 2 | RA0/AN0 — Digital I/O / Analog input 0 |
| Pin 3 | RA1/AN1 — Digital I/O / Analog input 1 |
| Pin 4 | RA2/AN2 — Digital I/O / Analog input 2 |
| Pin 5 | RA3/AN3 — Digital I/O / Analog input 3 |
| Pin 6 | RA4/AN4 — Digital I/O / Analog input 4 |
| Pin 7 | RA5/AN5 — Digital I/O / Analog input 5 |
| Pin 8 | Vss — Ground |
| Pin 9 | OSC1 — Oscillator input |
| Pin 10 | OSC2 — Oscillator output |
| Pin 11 | RC0 — Digital I/O port C |
| Pin 12 | RC1 — Digital I/O port C |
| Pin 13 | RC2 — Digital I/O port C |
| Pin 14 | RC3 — Digital I/O port C |
| Pin 15 | RC4 — Digital I/O port C |
| Pin 16 | RC5 — Digital I/O port C |
| Pin 17 | RC6 — Digital I/O port C |
| Pin 18 | RC7 — Digital I/O port C |
| Pin 19 | Vss — Ground |
| Pin 20 | Vdd — Positive supply voltage |
| Pin 21 | RB0 — Digital I/O port B |
| Pin 22 | RB1 — Digital I/O port B |
| Pin 23 | RB2 — Digital I/O port B |
| Pin 24 | RB3 — Digital I/O port B |
| Pin 25 | RB4 — Digital I/O port B |
| Pin 26 | RB5 — Digital I/O port B |
| Pin 27 | RB6/PGC — Digital I/O / ICSP clock |
| Pin 28 | RB7/PGD — Digital I/O / ICSP data |
| Pin 29 | Vss — Ground |
| Pin 30 | Vdd — Positive supply voltage |
| Pin 31 | RA6 — Digital I/O port A |
| Pin 32 | RA7 — Digital I/O port A |
| Pin 33 | RD0 — Digital I/O port D |
| Pin 34 | RD1 — Digital I/O port D |
| Pin 35 | RD2 — Digital I/O port D |
| Pin 36 | RD3 — Digital I/O port D |
| Pin 37 | RD4 — Digital I/O port D |
| Pin 38 | RD5 — Digital I/O port D |
| Pin 39 | RD6 — Digital I/O port D |
| Pin 40 | RD7 — Digital I/O port D |
| Pin 41 | Vss — Ground |
| Pin 42 | RE0 — Digital I/O port E |
| Pin 43 | RE1 — Digital I/O port E |
| Pin 44 | RE2 — Digital I/O port E |
Aplicaciones típicas
PIC18LF46J13T-I/PT es adecuado para 6 aplicacións: Portable Medical Sensor Hub, Industrial HMI Control Panel, Smart Thermostat / Building Automation, Environmental Sensor Data Logger, USB-Key Security Token, Educational / Maker Development Board.
Portable Medical Sensor Hub
The PIC18LF46J13T-I/PT suits wearable medical patches because its 2.0V-3.6V Vdd lets it run directly from a single CR2032 or Li-ion cell, while the nanoWatt XLP sleep modes drop quiescent current to sub-µA, extending patch lifetime to weeks. The 12-bit ADC with 13 channels simultaneously samples heart-rate, SpO2, and temperature sensors at low duty cycle. With 64KB Flash the firmware can implement Bluetooth Low Energy beaconing profiles or on-board signal processing, and 4KB RAM supports circular ECG buffer and FFT scratch space. Per Microchip's XLP datasheet, this part reliably executes at 12 MIPS for sensor fusion, and the 44-TQFP package enables slim PCB layouts under 6 mm height.
Recomendado
Industrial HMI Control Panel
For factory-floor HMI panels the PIC18LF46J13T-I/PT provides the I/O count and analog resolution needed to drive character LCDs, scan keypads, and read 4-20 mA sensor loops. The 34 digital I/O pins handle up to 5×5 key matrices plus relay outputs, while the 12-bit ADC with 13 channels digitizes multiple analog sensor inputs without external converters. Operating from 3.3V the MCU interfaces directly to 3.3V LCDs and SPI-connected Ethernet controllers. Industrial temperature rating (-40°C to +85°C) ensures reliability in unheated factory environments, and 64KB Flash supports CANopen or Modbus RTU protocol stacks with spare room for custom application logic.
Recomendado
Smart Thermostat / Building Automation
The PIC18LF46J13T-I/PT is well-matched to smart thermostats that combine multiple temperature sensors, a TFT or character LCD, Wi-Fi/BLE connectivity, and relay-controlled HVAC outputs. The 12-bit ADC accurately digitizes thermistor and RTD sensor bridges, while CCP/PWM modules drive TRIAC phase-angle control for heating elements. The 64KB Flash comfortably holds the BACnet or Modbus stack plus a web configuration UI, and the 4KB RAM provides buffer space for packet processing. nanoWatt XLP sleep extends battery backup during power loss, while 3.3V operation eliminates the need for an LDO when paired with Wi-Fi modules like the ESP32.
Recomendado
Environmental Sensor Data Logger
Battery-powered environmental loggers benefit from the PIC18LF46J13T-I/PT's nanoWatt XLP technology, which keeps sleep current in the sub-µA range so that multi-year operation on two AA cells is feasible. The 12-bit ADC reads CO2, humidity, and air-quality sensors with adequate resolution for trend logging, while 4KB RAM provides a circular buffer for several minutes of sensor history between SD card writes. SPI-connected microSD cards leverage the dedicated SPI peripheral, freeing CPU cycles for sensor polling. The wide industrial temperature range (-40°C to +85°C) covers outdoor and greenhouse deployments, and the 44-TQFP package supports hand-solderable prototypes.
Recomendado
USB-Key Security Token
For small USB-A or USB-C security tokens, the PIC18LF46J13T-I/PT delivers 12 MIPS sufficient to perform AES-128 encryption routines, plus 64KB Flash to host the firmware and challenge-response state machine. The UART/SPI peripherals allow external secure elements or FPGAs to communicate, while the 12-bit ADC can monitor battery voltage for tamper detection. Although this part lacks native USB, the PIC18LF46J50-I/PT in the same 44-TQFP package provides USB and is the recommended drop-in upgrade path. nanoWatt XLP sleep current keeps total standby power below 100 µA so the token meets USB suspend specifications.
Recomendado
Educational / Maker Development Board
The PIC18LF46J13T-I/PT is a strong choice for university microcontroller courses because it has ample 64KB Flash and 4KB RAM for student projects, exposed peripherals for full register-level programming exercises, and a robust toolchain via MPLAB X + XC8. The 44-pin TQFP package is hand-solderable on breakout boards and exposes 34 I/O for breadboard-friendly pinouts. ICSP (In-Circuit Serial Programming) allows students to reprogram the chip without removing it from the board, and the 2.0V-3.6V range permits power from a single Li-ion cell or USB-powered boost converter for portable lab projects.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC18LF46J13T-I/PT — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC18F46J13T-I/PT | PIC18LF46J13-I/PT | PIC18LF46J50-I/PT | PIC18LF46K22T-I/PT |
|---|---|---|---|---|---|
| Package | 44-TQFP (10x10) | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| Maximum Clock | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 64 MHz |
| Supply Voltage | 2.0V to 3.6V | 2.15V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 1.8V to 3.6V |
| USB | No | No | No | Yes (USB 2.0 FS) | No |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit |
Diferenciadores clave
- Lower minimum Vdd than the F variant (frente a PIC18F46J13T-I/PT)
- nanoWatt XLP deep sleep current (frente a PIC18LF46K22T-I/PT)
- Mature PIC18J toolchain support (frente a PIC18LF46K22T-I/PT)
Notas de diseño
When designing with the PIC18LF46J13T-I/PT, place a 100 nF decoupling capacitor on each Vdd/Vss pair (pins 20/19, 30/29, 41/8) within 5 mm of the package. For battery applications using a single Li-ion cell, add a 10 µF bulk capacitor on Vdd to handle peak ADC burst currents. Estimated: at 48 MHz active, the core draws ~12 mA; the decoupling network prevents Vdd droop that could otherwise trip the brown-out reset.
Route the ICSP pins PGD (RB7) and PGC (RB6) with short, parallel traces and avoid crossing them with high-current switching signals. Keep the analog input traces (AN0-AN12) away from digital switching nodes; the 12-bit ADC ENOB is ~10.5 bits in a clean PCB layout. Place an analog ground island under the ADC reference pin and stitch to digital ground at a single point.
The PIC18LF46J13T-I/PT's 2.0V minimum Vdd is stricter than the PIC18F variant's 2.15V; if your design is powered from a freshly discharged Li-ion cell at 3.0V with high inrush, verify Vdd never dips below 2.0V during load transients. Also note that the LF variant supports fewer oscillator modes than the F variant — verify your crystal selection against section 2 of the datasheet oscillator table.
For designs using SPI at speeds above 8 MHz, add 33 Ω series resistors on MISO/MOSI/SCK traces to dampen ringing. The PIC18LF46J13T-I/PT outputs can drive 25 mA per pin, so high-speed SPI loaded with multiple devices may require a buffer. Ensure MCLR has a 10 kΩ pull-up to Vdd and a 100 nF cap to ground for clean reset edges during power-up.
Información de cumplimiento
RoHS compliant per Microchip product page. Not AEC-Q100 qualified (industrial grade only). Lead-free and halogen-free per Microchip environmental certifications.
