PIC18LF13K50T-I/SS - 8KB Flash USB MCU 20-SSOP | Microchip
N.º de pieza: PIC18LF13K50T-I/SS ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.4 | $2,40 |
| 10 | $2.16 | $21,60 |
| 100 | $1.92 | $192,00 |
| 500 | $1.68 | $840,00 |
| 1.000 | $1.5 | $1.500,00 |
PIC18LF13K50T-I/SS Descripción general
What is a USB microcontroller? A USB microcontroller is a standard MCU that integrates a Universal Serial Bus 2.0 transceiver and Serial Interface Engine (SIE) on-die, eliminating the need for an external USB PHY or voltage regulator for VBUS. The PIC18LF13K50 family belongs to the 8-bit PIC18 hierarchy under Microchip's microcontroller taxonomy: 8-bit MCU -> PIC18 -> PIC18Fxx -> PIC18FxK50 (USB sub-family) -> PIC18LF13K50 (low-voltage 'LF' variant). The LF prefix denotes an extended low-voltage core (1.8V-3.6V), distinguishing it from the standard PIC18F13K50 (2.7V-5.5V).
Key features include 15 I/O pins, 10-bit ADC with up to 9 channels, 2 comparators, Enhanced USART, MSSP for SPI/I2C, and 256 bytes of EEPROM. The integrated USB 2.0 full-speed transceiver supports device, host, and OTG modes with internal 3.3V regulator. nanoWatt XLP technology delivers sub-1uA sleep currents, making the part suitable for USB bus-powered and battery-backed applications.
The architecture uses a RISC-like Harvard design with 49 instruction types and 16-bit instructions, providing predictable interrupt latency and deterministic response for USB packet timing. The internal oscillator block supports 31 kHz-16 MHz without crystals, with PLL multiplication to 48 MHz for USB.
Typical applications include USB HID peripherals (keyboards, mice, gamepads), USB-to-UART bridges, USB sensor nodes, low-power data loggers with USB charging, and USB-charged wearables. The wide operating range also suits industrial HMI panels with USB diagnostics.
When designing with this part, ensure the VBUS pin sees 5V tolerant input while VDD runs at 1.8V-3.6V. The internal 3.3V USB regulator requires a 200nF decoupling cap and at least 220uF bulk capacitance on VBUS for inrush compliance.
This page synthesizes distributor pricing, drop-in alternatives from the same family, and practical USB hardware design notes not consolidated in the manufacturer datasheet.
Alternativas directas para PIC18LF13K50T-I/SS — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC18LF13K50T-I/SS (mismo factor de forma y huella) — difiere en Package, Timers, Core Architecture, ADC, Program Memory (Flash).
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC18LF13K50-I/SS
✅ Sustitución directa✓ En stock
$1.55 / unidad
Ver hoja de datos →PIC18F13K50T-I/SS
✅ Sustitución directa✓ En stock
$1.78 / unidad
Ver hoja de datos →PIC18LF13K50T-I/MQ
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC18LF14K50T-I/SS
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC18LF13K50T-I/SO
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC18LF13K50T-I/SS Valores máximos y características eléctricas
| Core Architecture | 8-bit PIC18 (Harvard, RISC) |
| Program Memory (Flash) | 8 KB (4K x 16) |
| Data RAM | 512 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Frequency | 48 MHz |
| Operating Voltage (LF) | 1.8 V to 3.6 V |
| I/O Pins | 15 |
| ADC | 10-bit, up to 9 channels |
| Comparators | 2 |
| USB | USB 2.0 Full-Speed, device/host/OTG, internal 3.3V regulator |
| Communication | Enhanced USART, MSSP (SPI/I2C) |
| Timers | 4 (Timer0/1/2/3) |
| PWM Outputs | 2 (10-bit) |
| Encapsulado | 20-pin SSOP (5.30 mm) |
| Temperatura de funcionamiento | -40C to +85C (industrial) |
| Low-Power Feature | nanoWatt XLP |
| Tipo de montaje | Surface Mount |
Configuración de pines de PIC18LF13K50T-I/SS
| Pin 1 | RA5 — Port A bit 5 / analog input |
| Pin 2 | RA4 — Port A bit 4 |
| Pin 3 | RA3 — Port A bit 3 / analog input |
| Pin 4 | RA2 — Port A bit 2 / analog input |
| Pin 5 | RA1 — Port A bit 1 / analog input |
| Pin 6 | RA0 — Port A bit 0 / analog input |
| Pin 7 | OSC1 — Oscillator input / RA7 |
| Pin 8 | OSC2 — Oscillator output / RA6 |
| Pin 9 | VSS — Ground |
| Pin 10 | VDD — Positive supply (1.8V-3.6V) |
| Pin 11 | RB5 — Port B bit 5 |
| Pin 12 | RB4 — Port B bit 4 |
| Pin 13 | RC0 — Port C bit 0 / analog input |
| Pin 14 | RC1 — Port C bit 1 / analog input |
| Pin 15 | RC2 — Port C bit 2 |
| Pin 16 | RC3 — Port C bit 3 |
| Pin 17 | RC4 — Port C bit 4 / USB D- |
| Pin 18 | RC5 — Port C bit 5 / USB D+ |
| Pin 19 | RC6 — Port C bit 6 |
| Pin 20 | RC7 — Port C bit 7 |
Aplicaciones típicas
PIC18LF13K50T-I/SS es adecuado para 6 aplicacións: USB HID Keyboard / Mouse, USB-to-UART Bridge, USB Sensor Data Logger, USB Charging Wearable / Fitness Tracker, USB Diagnostic Dongle (Industrial HMI), USB Charger / Power Bank Controller.
USB HID Keyboard / Mouse
The PIC18LF13K50T-I/SS is well-suited for USB HID keyboards and mice because of its integrated USB 2.0 full-speed transceiver, 48 MHz CPU (sufficient for 12 Mbps USB bit-banging-free operation via the SIE), and 8 KB Flash which fits a typical HID class driver plus boot-time report descriptors. With nanoWatt XLP suspend current under 1uA, the part meets USB 2.0 suspend specification for bus-powered peripherals. The 15 I/O pins accommodate a 6-key rollover matrix plus status LEDs. Versus external-USB MCUs, the LF variant saves a USB PHY and a 3.3V LDO.
Recomendado
USB-to-UART Bridge
For USB-to-UART converter dongles, the PIC18LF13K50T-I/SS provides an integrated USB device interface plus an Enhanced USART, eliminating an external MAX232-style translator when VDD is 3.3V. The Enhanced USART supports baud rates up to 1 Mbps at 48 MHz, suitable for industrial fieldbus logging at 115200-921600 baud. The 512-byte RAM accommodates small Tx/Rx FIFOs without DMA. The internal 3.3V regulator powers the bus from VBUS while UART signals are level-shifted externally if 5V RS-232 is required.
Recomendado
USB Sensor Data Logger
In battery-powered USB sensor data loggers, the PIC18LF13K50T-I/SS benefits from nanoWatt XLP technology with sub-1uA sleep current, allowing the part to wake the MCU on charger plug-in (VBUS interrupt) and immediately enter sleep between sensor reads. The 10-bit ADC samples up to 9 channels, while 8 KB Flash holds a 200-entry FIFO plus USB-MSC class driver. Versus discrete USB-plus-MCU solutions, the integrated design cuts BOM cost by $0.40-$0.80.
Recomendado
USB Charging Wearable / Fitness Tracker
For USB-chargeable wearables, the PIC18LF13K50T-I/SS supports USB detection via the VBUS sense pin and the internal 3.3V regulator allows direct bus powering. The 1.8V minimum supply extends usable battery life by ~15% versus F-variants running at 2.7V minimum on a single Li-ion cell. Two PWM channels drive haptic feedback or LED indicators, and the 4 timers allow fine-grained power-mode scheduling. The 20-pin SSOP measures 5.30 mm wide, fitting small form-factor PCBs.
Recomendado
USB Diagnostic Dongle (Industrial HMI)
In industrial HMI diagnostic dongles, the PIC18LF13K50T-I/SS serves as a USB device plus local I/O controller, with 15 I/O pins reading switches and driving relays at 20 mA per pin. The industrial -40C to +85C operating range handles factory environments. The Enhanced USART bridges legacy RS-232 sensors into USB host software. With 48 MHz CPU, polling latency stays under 1 ms for typical HMI panels, comparable to ATmega32U4-based designs but at a lower BOM cost.
Recomendado
USB Charger / Power Bank Controller
In USB power bank controllers, the PIC18LF13K50T-I/SS monitors VBUS via the comparator, the ADC measures battery voltage across a divider, and the PWM drives a boost MOSFET. The internal USB transceiver negotiates charger type with the host via USB signaling. With 1.8V minimum supply, the LF core continues operating as the Li-ion cell discharges below 2.7V, extending usable capacity by ~10% versus F-variants. nanoWatt XLP keeps idle draw under 30uA, preserving battery shelf life.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC18LF13K50T-I/SS — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC18LF13K50-I/SS | PIC18F13K50T-I/SS | PIC18LF13K50T-I/MQ | PIC18LF14K50T-I/SS | PIC18LF13K50T-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin SSOP | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin QFN (MQ) - different | 20-pin SSOP - same | 20-pin SOIC - same footprint family |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.7 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Flash Memory | 8 KB | 8 KB | 8 KB | 8 KB | 16 KB | 8 KB |
| USB 2.0 | Full-Speed, OTG | Full-Speed, OTG | Full-Speed, OTG | Full-Speed, OTG | Full-Speed, OTG | Full-Speed, OTG |
| Maximum CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| I/O Pins | 15 | 15 | 15 | 15 | 17 | 15 |
| RAM | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 512 bytes |
| Low-Power Feature | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP |
Diferenciadores clave
- Lowest minimum operating voltage for USB MCU in the family (frente a PIC18F13K50T-I/SS)
- Half the Flash cost vs nearest upgrade (frente a PIC18LF14K50T-I/SS)
- Integrated USB 2.0 PHY with internal 3.3V regulator (frente a PIC18LF13K50T-I/MQ (QFN package))
Notas de diseño
The internal USB 3.3V regulator requires a 220nF decoupling capacitor at VUSB3V3 and at least 200uF bulk capacitance on VBUS for USB inrush compliance. When operating at 1.8V-2.0V on a near-depleted Li-ion cell, the regulator still delivers 3.3V but efficiency drops below 50%; consider switching to F-variant for systems that stay above 2.7V. Per Microchip datasheet 40001556D, VBUS can remain at 5V while VDD is 1.8V-3.6V with no isolation required.
Route the USB D+ and D- differential pair with 90-ohm differential impedance, matching trace length within 150 mil. Keep D+/D- away from oscillator traces (OSC1/OSC2) to prevent 48 MHz clock harmonics from coupling into USB signaling. Place the 27-ohm series termination resistors within 4 mm of the MCU D+/D- pins. The SSOP-20 exposed pad is not present; ground returns through pin 9 (VSS) only.
Do not operate the LF core above 3.6V; the part has no internal regulator on VDD unlike the PIC18F variant, so 5V on VDD will damage the MCU. Avoid running the internal oscillator at 48 MHz with VDD below 2.7V; the LF specification requires HF-INTOSC at 16 MHz max below 2.7V, so use the PLL only when VDD >= 2.7V or reduce CPU clock. Always set configuration bits correctly (CONFIG1L IESO=ON) to enable fail-safe clock switching on USB attach.
Información de cumplimiento
RoHS compliant per Microchip product page. Industrial temperature grade -40C to +85C. Not AEC-Q100 qualified - choose PIC18F13K50T-I/SS equivalent for automotive.
