PIC16LF1455-E/ST - 14KB Flash 48MHz USB MCU | Microchip TSSOP-14
N.º da peça: PIC16LF1455-E/ST ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $1.95 | $1,95 |
| 10 | $1.74 | $17,40 |
| 100 | $1.42 | $142,00 |
| 500 | $1.18 | $590,00 |
| 1.000 | $0.99 | $990,00 |
PIC16LF1455-E/ST Visão geral
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash), volatile data memory (RAM), and configurable peripheral blocks such as timers, ADC, communication interfaces, and GPIO. Within the broader category hierarchy, the PIC16LF1455 sits at: PIC16F family -> 8-bit PIC microcontrollers -> microcontrollers -> microcontrollers (MCU) -> embedded controllers -> semiconductors. The XLP (eXtreme Low Power) designation indicates Microchip's nanoWatt XLP technology family engineered for sleep currents below 1 µA in many modes, enabling years of battery life on coin cells.
Key features include 14 KB (8K x 14) self-programmable Flash, 1024 bytes RAM, an integrated USB 2.0 full-speed transceiver, two 10-bit ADC modules with up to 12 analog channels, dual PWM modules, and a configurable 5-bit DAC reference. The 48 MHz internal oscillator eliminates external crystals for many designs, reducing BOM cost and PCB area. The industrial -40 °C to +125 °C operating range supports harsh-environment deployment.
Architecturally, the PIC16LF1455 uses a 14-bit modified Harvard RISC core with single-cycle instructions (except branches), executed in two clock cycles through a four-phase pipeline. The integrated USB PHY simplifies USB device development by removing external transceiver components. The CIP (Core Independent Peripheral) set - including CWG, NCO, and CLC - allows hardware-state-machine tasks without CPU intervention, freeing the core for higher-level logic.
Typical applications include USB HID peripherals (keyboards, mice, custom input devices), low-power sensor nodes, consumer IR remote controls, capacitive-touch user interfaces via the mTouch peripheral, small home appliances, and battery-powered IoT edge nodes. The wide voltage range and XLP sleep modes make the part particularly attractive for energy-harvesting and wireless-sensor applications.
When designing with the PIC16LF1455, ensure the VUSB 3.3V regulator output is correctly bypassed with the recommended 0.47 µF capacitor per the Microchip datasheet; USB signal integrity requires the standard 90 Ω differential D+/D- impedance. For non-USB designs, the RA0/RA1 pins can be repurposed but never as analog inputs while the FVR is enabled in modes that conflict with the DAC reference.
This page synthesizes distributor pricing, drop-in alternative MPNs from the same PIC16F 14-pin TSSOP family, and practical USB-related design notes not found on a single distributor listing.
Alternativas drop-in para PIC16LF1455-E/ST — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC16LF1455-E/ST (mesmo formato e footprint) — diferindo em Package, Program Memory (Flash), Operating Temperature, I/O Pins, USB Module.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16LF1454-E/ST
✅ Drop-In✓ Em estoque
$1.1 / unidade
Ver ficha técnica →PIC16F1455-E/ST
✅ Drop-In✓ Em estoque
$0.95 / unidade
Ver ficha técnica →PIC16F1454-E/ST
✅ Drop-In✓ Em estoque
$0.72 / unidade
Ver ficha técnica →PIC16F1823-I/ST
✅ Drop-In✓ Em estoque
$0.85 / unidade
Ver ficha técnica →PIC16LF1455-E/ST Classificações máximas e características elétricas
| Core Architecture | 8-bit PIC16F RISC (14-bit instruction word) |
| Family | PIC16F XLP |
| Program Memory (Flash) | 14 KB (8K x 14) |
| RAM | 1024 bytes |
| Maximum CPU Speed | 48 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V |
| I/O Pins | 12 (depending on package) |
| Encapsulamento | TSSOP-14 |
| Tipo de montagem | Surface Mount |
| USB Transceiver | Integrated USB 2.0 Full-Speed |
| ADC | 2x 10-bit, up to 12 analog channels |
| PWM Modules | 2 |
| Faixa de temperatura de operação | -40 C to +125 C (industrial, -E suffix) |
| Temperature Grade | Automotive (per Vyrian listing) |
| Status RoHS | Compliant |
| Lead-Free | Yes |
| Oscillator | Internal 48 MHz, supports external crystal |
Configuração de pinos do PIC16LF1455-E/ST
| Pino 1 | VDD — Positive supply voltage (1.8 V to 5.5 V) |
| Pino 2 | RA5 — Digital I/O / analog input |
| Pino 3 | RA4 — Digital I/O / analog input |
| Pino 4 | RA3/MCLR — Digital I/O or master clear (reset) input |
| Pino 5 | RC5 — Digital I/O |
| Pino 6 | RC4 — Digital I/O |
| Pino 7 | RC3 — Digital I/O |
| Pino 8 | RC2 — Digital I/O |
| Pino 9 | RC1 — Digital I/O |
| Pino 10 | RC0 — Digital I/O |
| Pino 11 | RA1/ICSPDAT — Digital I/O / ICSP data |
| Pino 12 | RA0/ICSPCLK — Digital I/O / ICSP clock |
| Pino 13 | VSS — Ground reference |
| Pino 14 | VUSB — USB 3.3 V regulator output (bypass with 0.47 µF) |
Aplicações típicas
PIC16LF1455-E/ST é adequado para 6 aplicaçãos: USB HID Peripherals (Keyboard, Mouse, Custom Input), Low-Power Battery Sensor Nodes, Capacitive Touch User Interfaces (mTouch), Consumer IR Remote Controls, Small Home Appliance Control, USB-to-UART / CDC Serial Bridges.
USB HID Peripherals (Keyboard, Mouse, Custom Input)
The PIC16LF1455-E/ST's integrated USB 2.0 full-speed transceiver and 14 KB Flash make it ideal for USB HID-class peripherals such as keyboards, mice, custom input devices, and presentation clickers. With 12 MIPS at 48 MHz and the on-chip USB SIE handling bus protocol in hardware, the firmware only needs to implement HID report descriptors and endpoint polling, fitting within the 14 KB Flash budget. The XLP sleep current below 1 µA enables battery-powered wireless mice that wake on movement interrupt via the mTouch or IOC peripheral, then return to deep sleep between user events.
Recomendado
Low-Power Battery Sensor Nodes
The 1.8 V to 5.5 V supply range and XLP sleep currents below 1 µA in deep sleep make PIC16LF1455-E/ST suitable for battery-powered sensor nodes operating from single-cell Li-ion, 2x AA, or coin-cell batteries. The internal 48 MHz HFINTOSC allows the MCU to wake, sample sensors via the 10-bit ADC, transmit, and return to sleep within milliseconds, preserving battery capacity. The integrated USB simplifies firmware updates via direct USB connection, eliminating the need for a separate programming header in field-deployed sensor networks.
Recomendado
Capacitive Touch User Interfaces (mTouch)
The PIC16LF1455-E/ST's mTouch capacitive sensing peripheral enables robust touch buttons, sliders, and proximity sensors without external touch ICs. The CVD (Charge-Voltage Discharge) acquisition method provides excellent immunity to noise and moisture, supporting appliances and consumer products that must operate reliably with wet hands or in high-humidity environments. Combined with XLP sleep, the part can poll touch sensors every 100 ms at <1 µA average, waking the host system only on a confirmed touch event.
Recomendado
Consumer IR Remote Controls
The PIC16LF1455-E/ST's 48 MHz execution speed, low power, and integrated peripherals suit IR remote control transmitter designs for TVs, set-top boxes, and smart-home devices. The PWM module and timers can generate precise 38 kHz / 56 kHz carrier frequencies for NEC, RC-5, and SIRC protocols without CPU overhead. The wide VDD range allows the same firmware to operate from coin-cell or AAA batteries, while the small TSSOP-14 package fits inside the slimmest remote-control enclosures.
Recomendado
Small Home Appliance Control
From coffee makers to induction cooktops, the PIC16LF1455-E/ST's industrial -40 °C to +125 °C operating range, integrated USB for factory calibration, and CIP (Core Independent Peripheral) blocks make it well-suited for small home appliance designs. The CWG (Complementary Waveform Generator) and NCO (Numerically Controlled Oscillator) handle motor and triac timing without CPU intervention, freeing the core for user-interface logic. The integrated 5-bit DAC provides a low-cost analog reference for sensor excitation in appliance measurement subsystems.
Recomendado
USB-to-UART / CDC Serial Bridges
The integrated USB transceiver and 14 KB Flash allow the PIC16LF1455-E/ST to implement USB CDC class devices, presenting as a virtual COM port to a host PC with no external driver required on modern operating systems. This eliminates the need for FTDI or CP2102 bridge chips in embedded designs, reducing BOM cost and PCB area. The wide 1.8 V to 5.5 V VDD range lets the same firmware bridge between 1.8 V MCUs and 5 V USB hosts without level shifters.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16LF1455-E/ST — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16LF1454-E/ST | PIC16F1455-E/ST | PIC16F1454-E/ST | PIC16F1823-I/ST |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TSSOP-14 | TSSOP-14 - same | TSSOP-14 - same | TSSOP-14 - same | TSSOP-14 - same |
| Program Memory (Flash) | 14 KB | 8 KB (-43%) | 14 KB (0%) | 8 KB (-43%) | 8 KB (-43%) |
| RAM | 1024 bytes | 1024 bytes (same) | 1024 bytes (same) | 1024 bytes (same) | 256 bytes (-75%) |
| Maximum CPU Speed | 48 MHz | 48 MHz (same) | 48 MHz (same) | 48 MHz (same) | 32 MHz (-33%) |
| Operating Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V (same) | 2.3 V to 5.5 V (narrower min) | 2.3 V to 5.5 V (narrower min) | 1.8 V to 5.5 V (same) |
| Integrated USB | Yes (USB 2.0 Full-Speed) | Yes (same) | Yes (same) | Yes (same) | No |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C (same) | -40 C to +125 C (same) | -40 C to +125 C (same) | -40 C to +85 C (industrial) |
Principais diferenciais
- Lowest minimum VDD in TSSOP-14 PIC16F1 family with USB (vs PIC16F1455-E/ST)
- Maximum Flash in 14-pin USB PIC16F1 family (vs PIC16LF1454-E/ST)
- Integrated USB eliminates external transceiver (vs PIC16F1823-I/ST)
Notas de projeto
The PIC16LF1455-E/ST integrates a 3.3 V USB regulator on the VUSB pin (pin 14) that must be bypassed with a 0.47 µF ceramic capacitor per the Microchip datasheet. When USB is not in use, the VUSB pin should be left disconnected and the internal regulator disabled via firmware to eliminate quiescent current. For non-USB designs, route VUSB to NC or ground through 100 kΩ to prevent leakage into the disabled LDO. Estimated: the disabled USB LDO leakage is below 1 µA per Microchip characterization data, allowing deep-sleep currents to remain in the XLP range.
Place the VDD decoupling capacitor (100 nF ceramic) within 3 mm of pin 1 and the VSS connection (pin 13) directly to a ground plane via the shortest path. For USB designs, maintain 90 Ω differential impedance on D+ (RC4) and D- (RC3) traces per USB 2.0 specification, with trace length matching within 150 mil. The VUSB bypass must use a low-ESR ceramic cap (X7R or better); avoid Y5V dielectrics which degrade USB signal integrity under temperature. Estimated: PCB area for the TSSOP-14 with proper USB routing is approximately 10 mm × 8 mm including test points.
Do not leave the MCLR/RA3 pin floating - it must be tied to VDD through a 10 kΩ pull-up for normal operation. Failing to configure the Configuration Word with MCLRE=0 and instead relying on the internal weak pull-up results in unreliable resets and erratic startup behavior. The ICSP programming pins RA0 (ICSPCLK) and RA1 (ICSPDAT) must be accessible on the PCB even in production designs - do not reassign them to output-only functions, otherwise field firmware updates become impossible without board rework.
Informações de conformidade
RoHS and lead-free confirmed per Microchip product page and DigiKey listing. AEC-Q100 not applicable - industrial -40C to +125C range only. Halogen-free status not explicitly stated in verified web data.
