PIC18LF46J50T-I/ML - 8-bit 48MHz USB MCU 64KB Flash | Microchip
Référence : PIC18LF46J50T-I/ML ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $4.92 | $4,92 |
| 10 | $4.42 | $44,20 |
| 100 | $3.93 | $393,00 |
| 500 | $3.54 | $1 770,00 |
| 1 000 | $3.15 | $3 150,00 |
PIC18LF46J50T-I/ML Présentation
A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, peripherals, and I/O. The PIC18 family from Microchip uses a modified Harvard RISC architecture with 16-bit opcodes and 8-bit data, optimized for deterministic interrupt response and low power. The J-series sub-family adds nanoWatt XLP technology for deep sleep currents in the nanoamp range, ideal for battery-powered and energy-harvesting designs.
Key features include a full-speed USB 2.0 device/host/OTG transceiver, 64 KB self-programmable Flash with 4 KB RAM, 13 ADC channels with 10-bit resolution, multiple PWM/Capture/Compare modules, and 36 digital I/O pins. The device includes a real-time clock calendar, two analog comparators, and a charge time measurement unit (CTMU) for capacitive touch sensing. The 8-bit modified Harvard RISC core executes most instructions in one cycle, achieving up to 16 MIPS throughput at 48 MHz.
Typical applications include USB peripherals, touch-sensitive user interfaces, low-power wireless sensor nodes, industrial control interfaces, and portable medical devices. USB connectivity eliminates external transceivers in HID-class designs such as mice, keyboards, and data loggers.
Design considerations: the exposed thermal pad on the QFN package must be soldered to a ground plane for electrical and thermal performance. Use Microchip's MPLAB X IDE with the XC8 compiler for firmware development.
This page consolidates distributor pricing, drop-in alternatives, and applied design guidance that goes beyond what the manufacturer datasheet alone provides.
Alternatives de remplacement direct pour PIC18LF46J50T-I/ML — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC18LF46J50T-I/ML (même facteur de forme et même empreinte) — différant par ADC, Package, Operating Temperature, Timers, I/O Pins.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC18F46J50T-I/ML
✅ Remplacement direct✓ En stock
$3.85 / unité
Voir la fiche technique →PIC18LF46J50-I/ML
✅ Remplacement direct✓ En stock
$3.75 / unité
Voir la fiche technique →PIC18LF45J50T-I/ML
✅ Remplacement direct✓ En stock
$3.65 / unité
Voir la fiche technique →PIC18LF46J50T-I/ML Valeurs maximales et caractéristiques électriques
| Core | PIC18 8-bit RISC |
| CPU Speed | 48 MHz |
| Program Memory | 64 KB Flash |
| RAM | 4 KB |
| Operating Voltage | 2.0 V to 3.6 V |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| Digital I/O | 36 |
| ADC | 10-bit, 13 channels |
| Timers | 5 (8-bit/16-bit) |
| PWM Modules | 3 CCP + 2 ECCP |
| Boîtier | 44-pin QFN (8x8 mm) with EP |
| Type de montage | Surface Mount |
| Température de fonctionnement | -40C to +85C |
| Statut RoHS | Compliant |
| Power-Saving Modes | nanoWatt XLP (Deep Sleep, Sleep, Idle) |
| Programming | ICSP (In-Circuit Serial Programming) |
Configuration des broches de PIC18LF46J50T-I/ML
| Broche 1 | RP5/RD5 — Port D I/O pin / Remappable peripheral |
| Broche 2 | RP6/RD6 — Port D I/O pin / Remappable peripheral |
| Broche 3 | RP7/RD7 — Port D I/O pin / Remappable peripheral |
| Broche 4 | VSS — Ground reference |
| Broche 5 | VCAP |
| Broche 6 | RA0 — Port A I/O / analog input AN0 |
| Broche 7 | RA1 — Port A I/O / analog input AN1 |
| Broche 8 | RA2 — Port A I/O / analog input AN2 |
| Broche 9 | RA3 — Port A I/O / analog input AN3 |
| Broche 10 | RA4 — Port A I/O |
| Broche 11 | RA5 — Port A I/O |
| Broche 12 | VSS — Ground reference |
| Broche 13 | OSC1/CLKI/RA7 — Oscillator input / Port A I/O |
| Broche 14 | OSC2/CLKO/RA6 — Oscillator output / Port A I/O |
| Broche 15 | VDD — Positive supply voltage (2.0V-3.6V) |
| Broche 16 | RB0/AN12 — Port B I/O / analog input |
| Broche 17 | RB1/AN10 — Port B I/O / analog input |
| Broche 18 | RB2/AN8 — Port B I/O / analog input |
| Broche 19 | RB3/AN9 — Port B I/O / analog input |
| Broche 20 | RB4/AN11 — Port B I/O / analog input |
| Broche 21 | RB5/AN13 — Port B I/O / analog input |
| Broche 22 | RB6/PGC — Port B I/O / ICSP clock |
| Broche 23 | RB7/PGD — Port B I/O / ICSP data |
| Broche 24 | VSS — Ground reference |
| Broche 25 | VDD — Positive supply voltage |
| Broche 26 | RC0 — Port C I/O |
| Broche 27 | RC1 — Port C I/O |
| Broche 28 | RC2 — Port C I/O |
| Broche 29 | D-/RC4 — USB D- data line / Port C I/O |
| Broche 30 | D+/RC5 — USB D+ data line / Port C I/O |
| Broche 31 | RC6 — Port C I/O |
| Broche 32 | RC7 — Port C I/O |
| Broche 33 | VSS — Ground reference |
| Broche 34 | VDD — Positive supply voltage |
| Broche 35 | RD0 — Port D I/O |
| Broche 36 | RD1 — Port D I/O |
| Broche 37 | RD2 — Port D I/O |
| Broche 38 | RD3 — Port D I/O |
| Broche 39 | RD4 — Port D I/O |
| Broche 40 | RE0 — Port E I/O / analog input |
| Broche 41 | RE1 — Port E I/O / analog input |
| Broche 42 | RE2 — Port E I/O / analog input |
| Broche 43 | RE3 — Port E I/O |
| Broche 44 | VDD — Positive supply voltage |
Applications typiques
PIC18LF46J50T-I/ML convient pour 7 applications: USB HID Devices (Keyboard/Mouse/Gamepad), Battery-Powered IoT Sensor Nodes, Industrial Control Interfaces, Capacitive Touch User Interfaces, Portable Medical Devices, LED Lighting Controllers, USB Data Loggers and Tethered Sensors.
USB HID Devices (Keyboard/Mouse/Gamepad)
The PIC18LF46J50T-I/ML's integrated full-speed USB 2.0 transceiver eliminates external PHY components, reducing BOM cost and PCB area in HID designs. The 48 MHz core handles HID class polling and report generation at the 1 ms USB full-speed frame interval without CPU loading concerns. The 64 KB Flash accommodates HID descriptor tables, report buffers, and application firmware with room for bootloaders. With 36 digital I/O pins, the MCU can scan matrices up to 18x18 for mechanical keyboards or drive multi-axis gaming controllers directly.
Recommandé
Battery-Powered IoT Sensor Nodes
The PIC18LF46J50T-I/ML belongs to the nanoWatt XLP family with deep-sleep currents measured in nanoamps, making it ideal for coin-cell or 2xAA battery IoT nodes. The 2.0V to 3.6V supply range supports primary lithium and alkaline chemistries directly. The 13-channel 10-bit ADC reads sensor data efficiently, and the 64 KB Flash stores local buffer plus OTA update images. The integrated USB enables configuration and battery charging from the same port without a separate interface IC.
Recommandé
Industrial Control Interfaces
The PIC18LF46J50T-I/ML provides industrial-grade operation from -40C to +85C and 36 I/O pins for connecting to sensors, actuators, and communication buses. The 5 CCP/ECCP modules drive PWM outputs for motor control and LED dimming, while the 10-bit ADC handles analog process variables. The integrated USB simplifies factory programming, firmware updates, and data logging via industrial PCs. The 64 KB Flash allows full Modbus RTU or CANopen protocol stacks with application logic.
Recommandé
Capacitive Touch User Interfaces
The PIC18LF46J50T-I/ML integrates a Charge Time Measurement Unit (CTMU) that enables robust capacitive touch sensing without external touch ICs. The CTMU works with the 10-bit ADC to measure capacitance changes on touch pads, supporting sliders, wheels, and matrix buttons. With 36 I/O pins, the MCU can host up to 36 individual touch channels. The 48 MHz core executes Microchip's mTouch library with sub-10 ms response times while maintaining low average current consumption through XLP sleep modes.
Recommandé
Portable Medical Devices
The PIC18LF46J50T-I/ML's low power operation and integrated USB support portable medical peripherals such as glucose meters, pulse oximeters, and data loggers. The 2.0V to 3.6V range accommodates Li-ion or NiMH battery packs directly. The 64 KB Flash stores patient data buffers and USB device firmware for connection to host medical software. The nanoWatt XLP technology extends battery life, critical for handheld patient monitoring devices.
Recommandé
LED Lighting Controllers
The PIC18LF46J50T-I/ML drives multi-channel LED lighting systems using its 3 CCP and 2 ECCP PWM modules for high-resolution dimming and color mixing. The 48 MHz core supports DMX, DALI, or proprietary LED control protocols. The 64 KB Flash stores lighting scenes and effects, while the integrated USB enables PC-based lighting configuration tools. The exposed pad QFN package provides thermal performance for PWM-driven MOSFETs in adjacent power stages.
Recommandé
USB Data Loggers and Tethered Sensors
The PIC18LF46J50T-I/ML serves as the brain of USB-tethered data loggers for environmental, automotive, or industrial monitoring. The integrated USB 2.0 full-speed transceiver streams sensor data to host PCs without external components. The 64 KB Flash buffers large data sets when the host is offline, and 4 KB RAM holds active samples. The 13-channel ADC connects directly to sensors including thermistors, load cells, and bridge transducers.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC18LF46J50T-I/ML — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC18F46J50T-I/ML | PIC18LF46J50-I/ML | PIC18LF45J50T-I/ML |
|---|---|---|---|---|
| Package | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | PIC18 8-bit RISC | PIC18 8-bit RISC | PIC18 8-bit RISC | PIC18 8-bit RISC |
| CPU Speed | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash | 64 KB | 64 KB | 64 KB | 32 KB (-50%) |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB |
| USB | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed |
| Operating Voltage | 2.0V to 3.6V | 2.0V to 3.6V (wider tolerance) | 2.0V to 3.6V | 2.0V to 3.6V |
| Packaging | Tape & Reel | Tape & Reel | Tube | Tape & Reel |
Principaux différenciateurs
- Integrated full-speed USB 2.0 transceiver (vs PIC18LF45K80T-I/ML)
- nanoWatt XLP deep-sleep mode (vs PIC18F46J50T-I/ML)
- 64 KB Flash with self-programmability (vs PIC18LF45J50T-I/ML)
Notes de conception
Solder the exposed thermal pad (EP) of the 44-pin QFN package directly to a continuous ground plane on the top or bottom PCB layer. The EP carries both the thermal path and the chip substrate ground connection. Multiple thermal vias under the EP - at least 9 vias in a 3x3 array - reduce thermal resistance and improve electrical grounding. Skipping EP soldering causes erratic behavior, USB communication failures, and possible thermal damage at high ambient temperatures.
Place 100 nF ceramic decoupling capacitors within 3 mm of each VDD pin (QFN package has multiple VDD pads: pins 15, 25, 34, 44). Add a single 10 uF bulk capacitor near the package. For USB applications, ensure the VUSB pin has a 220 nF capacitor. Poor decoupling causes USB enumeration failures and ADC noise. The VCAP pin (pin 5) requires a 10 uF capacitor to stabilize the internal 1.8V regulator - do not omit this part.
Do not confuse the LF (low-voltage) variant PIC18LF46J50 with the F (full-voltage) variant PIC18F46J50 - both share the same datasheet but have different operating voltage specifications. For USB applications, the 48 MHz USB clock must be derived from the internal 96 MHz PLL, which requires specific configuration bits. Confusing LF and F variants in 5V-tolerant designs causes unintended behavior when input voltage exceeds the LF rating of 3.6V.
Route the USB D+ (RC5) and D- (RC4) lines as a 90-ohm differential pair with controlled impedance matching. Keep total USB trace length under 50 mm and maintain symmetric lengths within 2 mm. Place the 15 kohm pull-down resistor on D- and the 1.5 kohm pull-up on D+ (for full-speed device mode) close to the MCU. Use Microchip's USB design guidelines document for EMI/ESD compliance.
Informations de conformité
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; this is a commercial/industrial-grade MCU. Refer to Microchip automotive product line for AEC-Q100 alternatives.
