PIC16LF1455T-I/ST - 14KB Flash USB MCU 8-bit 48MHz TSSOP-14
N.º de pieza: PIC16LF1455T-I/ST ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $1.85 | $1,85 |
| 10 | $1.67 | $16,70 |
| 100 | $1.49 | $149,00 |
| 500 | $1.34 | $670,00 |
| 1.000 | $1.19 | $1.190,00 |
PIC16LF1455T-I/ST Descripción general
An 8-bit microcontroller (MCU) is a programmable integrated circuit that executes instructions sequentially from on-chip program memory and interacts with peripherals through digital and analog I/O. Within the broader taxonomy, the PIC16LF1455 belongs to: MCU -> 8-bit MCU -> PIC16 family -> enhanced mid-range core -> Microchip PIC16F1xxx USB sub-family. The enhanced mid-range core delivers 49 instructions, 16 stack levels, and self read/write Flash with high-endurance HEF cells, plus 128 bytes of non-volatile data EEPROM.
Key features include a Universal Serial Bus 2.0 module with clock recovery from the USB host, eliminating the need for an external crystal on USB applications. The device integrates a 48 MHz internal oscillator, multiple timer modules, a 10-bit ADC, comparators, PWM, and the CIP (Core Independent Peripherals) that allow hardware-based state machines without CPU intervention. eXtreme Low Power (XLP) technology delivers nanoWatt sleep currents for energy-harvesting and coin-cell designs.
The architecture combines a RISC-based 8-bit CPU with USB SIE hardware, allowing full-speed USB device/host/OTG operation through software stacks such as the Microchip USB Framework. The 14 KB Flash supports In-Circuit Serial Programming (ICSP) and self-programming for bootloader-based firmware updates. CIP peripherals reduce firmware complexity and deterministic interrupt latency.
Typical applications include USB human-interface devices (HID), USB-to-UART bridges, USB LED drivers, USB battery chargers, consumer USB peripherals, USB barcode scanners, low-power sensor hubs, and USB-based IoT endpoints. The wide operating voltage and low sleep current also suit wearable medical and remote-control products.
When designing with this device, ensure that the USB D+/D- traces are 90 ohm differential matched and that VUSB bypass capacitance follows the datasheet recommendations to maintain USB-IF compliance. For non-USB applications, allocate the D+/D- pins as standard GPIO since the USB module can be disabled in firmware.
Alternativas directas para PIC16LF1455T-I/ST — 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 PIC16LF1455T-I/ST (mismo factor de forma y huella) — difiere en Package, Core, MSL Level, Maximum CPU Speed, Internal Oscillator.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC16LF1455-I/ST
✅ Sustitución directa✓ En stock
$1.24 / unidad
Ver hoja de datos →PIC16LF1454T-I/ST
✅ Sustitución directa✓ En stock
$1.1 / unidad
Ver hoja de datos →PIC16LF1459T-I/ST
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC16F1455T-I/ST
✅ Sustitución directa✓ En stock
$1.92 / unidad
Ver hoja de datos →PIC16LF1455T-I/ML
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
PIC16F1825T-I/ST
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC16LF1455T-I/ST Valores máximos y características eléctricas
| Core | PIC enhanced mid-range 8-bit |
| Instruction Set | 49 instructions, 16 stack levels |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| RAM | 1024 bytes |
| EEPROM | 128 bytes (HEF high-endurance Flash) |
| Maximum CPU Frequency | 48 MHz |
| Operating Voltage (Vdd) | 1.8 V to 3.6 V |
| I/O Pins | 12 |
| USB Module | USB 2.0 Full-Speed with clock recovery from host |
| Temperatura de funcionamiento | -40 C to +85 C (Industrial, 'I' suffix) |
| Encapsulado | 14-pin TSSOP (ST) |
| Package Width | 4.40 mm |
| Tipo de montaje | Surface Mount |
| Nivel MSL | MSL 1 (unlimited floor life at <30 C / 85% RH, per JEDEC J-STD-020) |
| Lead-Free / RoHS | Lead-free, RoHS compliant |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
Configuración de pines de PIC16LF1455T-I/ST
| Pin 1 | RA3/MCLR/VPP — GPIO / Master Clear (reset) / programming voltage |
| Pin 2 | RA0 — GPIO / ICSPDAT |
| Pin 3 | RA1 — GPIO / ICSPCLK |
| Pin 4 | RA2 — GPIO |
| Pin 5 | RA5 — GPIO |
| Pin 6 | Vss — Ground |
| Pin 7 | RA4 — GPIO |
| Pin 8 | RC0 — GPIO |
| Pin 9 | RC1 — GPIO |
| Pin 10 | RC2 — GPIO |
| Pin 11 | D- — USB D- data line (or GPIO RB4) |
| Pin 12 | D+ — USB D+ data line (or GPIO RB5) |
| Pin 13 | RC3 — GPIO |
| Pin 14 | Vdd — Power supply (1.8 V to 3.6 V) |
Aplicaciones típicas
PIC16LF1455T-I/ST es adecuado para 6 aplicacións: USB HID Peripherals (Keyboard, Mouse, Gamepad), USB-to-UART Bridge / CDC Virtual COM Port, USB LED Drivers and Lighting Controllers, USB Battery Chargers and Power Banks, USB Barcode Scanners and Point-of-Sale Terminals, USB IoT Sensor Hubs and Edge Nodes.
USB HID Peripherals (Keyboard, Mouse, Gamepad)
The PIC16LF1455T-I/ST's integrated USB 2.0 Full-Speed SIE with host-clock recovery is ideal for USB HID devices such as keyboards, mice, and game controllers. Its 14 KB Flash accommodates Microchip's USB HID stack plus application logic, while 1024 bytes RAM handles HID report buffers. The 12 GPIO pins map to scan matrices, mechanical switches, and LED indicators. Operating at 1.8 V to 3.6 V supports 3.3 V USB VBUS-derived power with no level shifters. The TSSOP-14 footprint saves PCB space in compact peripherals.
Recomendado
USB-to-UART Bridge / CDC Virtual COM Port
The PIC16LF1455T-I/ST serves as a low-cost USB-to-UART bridge by running the Microchip USB CDC stack on the integrated USB SIE and bit-banging UART on GPIO pins. The 48 MHz internal oscillator provides accurate baud-rate generation without an external crystal. The 14 KB Flash stores the CDC class driver and application protocol layer, while the 12 GPIO can be partitioned between UART, RTS/CTS, and status LEDs. Industrial temperature grade (-40 C to +85 C) suits factory-floor gateways.
Recomendado
USB LED Drivers and Lighting Controllers
The PIC16LF1455T-I/ST can drive WS2812B addressable LED strips directly via USB by streaming SPI or bit-banged PWM patterns from the integrated 48 MHz core. Its nanoWatt XLP sleep modes allow the device to drop below 30 nA when no USB traffic is present, conserving power in battery-powered decorative lighting. The 1.8 V minimum Vdd extends battery runtime, while the 14-pin TSSOP package drops into slim lamp housings. Use the PWM module for smooth color fades.
Recomendado
USB Battery Chargers and Power Banks
The PIC16LF1455T-I/ST powers USB Li-Ion/Li-Po chargers by reading USB BC1.2 signaling on the integrated SIE and driving a buck/boost controller via PWM. The 12-bit ADC and comparator peripherals measure battery voltage and current, while the 14 KB Flash runs the charging state machine and USB-CDC telemetry stack. The 1.8 V to 3.6 V range handles single-cell packs directly. Industrial temperature supports in-vehicle charging applications.
Recomendado
USB Barcode Scanners and Point-of-Sale Terminals
The PIC16LF1455T-I/ST integrates USB HID keyboard emulation and a UART channel to attach handheld barcode imagers, providing plug-and-play scanner interfaces for POS terminals. Its 14 KB Flash accommodates HID keyboard descriptors, scanner command parsing, and buzzer control firmware. The 1024 bytes RAM buffers scan bursts, and the 48 MHz core delivers deterministic response under interrupt load. The TSSOP-14 footprint fits into the scanner handle PCB.
Recomendado
USB IoT Sensor Hubs and Edge Nodes
The PIC16LF1455T-I/ST serves as a USB-attached IoT sensor hub by aggregating I2C/SPI sensor data and presenting it over USB CDC or HID. The 12 GPIO and integrated peripherals (cores) handle sensor wake-up, sampling, and USB enumeration with minimal CPU overhead. The 14 KB Flash stores sensor drivers and USB stacks, while 1024 bytes RAM buffers samples. The nanoWatt XLP sleep current below 30 nA allows battery-backed operation when the USB host is offline.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC16LF1455T-I/ST — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC16LF1455-I/ST | PIC16LF1454T-I/ST | PIC16LF1459T-I/ST | PIC16F1455T-I/ST | PIC16F1825T-I/ST |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-pin TSSOP (ST) | 14-pin TSSOP (ST) - same | 14-pin TSSOP (ST) - same | 14-pin TSSOP (ST) - same | 14-pin TSSOP (ST) - same | 14-pin TSSOP (ST) - same |
| Core | 8-bit enhanced mid-range | 8-bit enhanced mid-range | 8-bit enhanced mid-range | 8-bit enhanced mid-range | 8-bit enhanced mid-range | 8-bit enhanced mid-range |
| Flash Memory | 14 KB | 14 KB | 8 KB | 16 KB | 14 KB | 14 KB |
| RAM | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 1.8 V to 5.5 V |
| USB 2.0 Module | Yes (Full-Speed, host clock recovery) | Yes | Yes | Yes | Yes | No |
| Maximum CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 32 MHz |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 |
| Unit Price (USD, qty 1) | 1.85 | 1.80 | 1.55 | 1.95 | 1.90 | 1.70 |
Diferenciadores clave
- Integrated USB 2.0 Full-Speed with host-clock recovery (frente a PIC16F1825T-I/ST)
- Lowest voltage operation in the 14-pin TSSOP family (frente a PIC16F1455T-I/ST)
- Larger Flash for richer USB stacks (frente a PIC16LF1454T-I/ST)
Notas de diseño
Route the USB D+ (pin 12) and D- (pin 11) lines as a 90 ohm differential pair with matched length to within 150 mil. Place the VUSB bypass capacitor (typically 0.1 uF in parallel with 4.7 uF) within 5 mm of the Vdd pin. Refer to the Microchip datasheet 40001639E section on PCB layout recommendations for USB-IF compliance testing.
The PIC16LF1455T-I/ST operates from 1.8 V to 3.6 V (Vdd). For USB bus-powered designs, connect VBUS to Vdd through a 3.3 V LDO such as Microchip MCP1700 to provide regulated 3.3 V. Decouple Vdd with a 100 nF ceramic capacitor plus 10 uF bulk capacitor placed within 3 mm of the pin. Avoid switching loads sharing the same Vdd node as the MCU Vdd to prevent digital noise coupling into the analog reference.
Do not leave MCLR/RA3 (pin 1) floating; tie to Vdd through a 10 kohm pull-up for normal operation or to the ICSP programmer output during debugging. The PIC16LF1455's USB module requires the internal 48 MHz oscillator to be enabled in configuration bits before USB transactions; failure to do so yields 'USB not configured' errors. When the USB module is unused, configure D+/D- as GPIO in firmware to free the pins for general I/O.
The TSSOP-14 package has a thermal resistance (theta_JA) of approximately 100 C/W on a standard JEDEC EIA/JESD51 2S2P test board. At maximum 48 MHz operation the core current is around 5 mA; total device current rarely exceeds 15 mA even with USB active, so self-heating is negligible (less than 2 C rise). No heatsinking is required for typical embedded designs. Refer to Microchip datasheet 40001639E for derating curves if the part is used in a sealed enclosure with limited airflow.
Información de cumplimiento
Lead-free and RoHS compliant per Microchip product page. Industrial temperature grade (-40 C to +85 C) per 'I' suffix. Not AEC-Q100 qualified - this part targets commercial/industrial USB peripherals rather than automotive. Conflict-minerals declaration filed by Microchip.
