PIC16LF1454-I/ST - 8-bit 48MHz 14KB Flash USB MCU | Microchip
N.º de pieza: PIC16LF1454-I/ST ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.45 | $2,45 |
| 10 | $2.18 | $21,80 |
| 100 | $1.86 | $186,00 |
| 500 | $1.62 | $810,00 |
| 1.000 | $1.41 | $1.410,00 |
PIC16LF1454-I/ST Descripción general
An 8-bit PIC microcontroller is a Harvard-architecture RISC device that executes one instruction per clock cycle (excluding branches), uses separate program and data memory buses, and is widely deployed across consumer, industrial, and automotive embedded designs. The PIC16LF1454 belongs to the enhanced mid-range core family, offering 49 instructions, 16-level hardware stack, and integrated peripherals including a USB 2.0 full-speed module with clock recovery, MI2C, USART, and 12-bit ADC.
Key differentiating specifications include 14KB self-read/write Flash with high-endurance Flash (HEF), 1KB RAM, 128B non-volatile data EEPROM, an internal 48 MHz oscillator with USB-friendly PLL, and nanoWatt XLP power management that drops quiescent current below 1 µA in sleep. The integrated USB 2.0 module with on-chip transceiver eliminates the need for external USB PHY components in low-speed and full-speed designs.
Typical applications include USB HID peripherals (keyboards, mice, game controllers), USB-to-UART bridges, capacitive touch sensing front-ends, wearable sensor nodes, low-power IoT endpoints, and small industrial control boards. The 14-pin footprint keeps BOM cost low while the USB module allows direct bus-powered connectivity.
When designing with this part, ensure the internal oscillator accuracy and PLL settings meet USB full-speed timing requirements; an external 48 MHz crystal can be substituted for tighter USB jitter. The TSSOP-14 footprint is friendly to hand-soldering and rework, but the exposed variants (PIC16LF1454-I/ML in QFN) offer better thermal performance for higher duty-cycle USB applications.
This page synthesizes distributor pricing, drop-in alternatives within the PIC16LF145x family and pin-compatible variants, and practical design notes not found in the manufacturer datasheet alone.
Alternativas directas para PIC16LF1454-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 PIC16LF1454-I/ST (mismo factor de forma y huella) — difiere en Package, Operating Temperature, I/O Pins, Program Memory (Flash), Core.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC16F1454-I/ST
✅ Sustitución directa✓ En stock
$1.02 / unidad
Ver hoja de datos →PIC16LF1454-E/ST
✅ Sustitución directa✓ En stock
$1.1 / unidad
Ver hoja de datos →PIC16F1454-E/ST
✅ Sustitución directa✓ En stock
$0.72 / unidad
Ver hoja de datos →PIC16LF1454-I/ST Valores máximos y características eléctricas
| Core Architecture | PIC 8-bit Enhanced Mid-Range |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data SRAM | 1 KB (Note: distributor snippet cites 512 B; verify with datasheet) |
| EEPROM (Non-volatile Data) | 128 B |
| Maximum CPU Speed | 48 MHz |
| Supply Voltage Range | 1.8 V to 5.5 V |
| I/O Pins | 11 (14-pin TSSOP) |
| USB Module | USB 2.0 Full-Speed with on-chip transceiver and clock recovery |
| Other Peripherals | MI2C, USART, Comparators, PWM, Capacitive Touch |
| Instruction Set | 49 instructions |
| Hardware Stack | 16 levels |
| Temperatura de funcionamiento | -40C to +85C (Industrial) |
| Encapsulado | TSSOP-14 (ST) |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
Configuración de pines de PIC16LF1454-I/ST
| Pin 1 | RA3/AN3/VREF+/T1G/SS — GPIO / ADC input / positive reference / Timer1 gate / SPI slave select |
| Pin 2 | RA4/AN4/T1G/OSC2/CLKOUT — GPIO / ADC input / Timer1 gate / crystal oscillator output / clock output |
| Pin 3 | RA5/AN5/OSC1/CLKIN — GPIO / ADC input / crystal oscillator input / external clock input |
| Pin 4 | VSS — Ground reference |
| Pin 5 | VDD — Positive supply voltage (1.8 V to 5.5 V) |
| Pin 6 | RA0/D+/AN0/ICSPCLK — GPIO / USB D+ / ADC input / ICSP clock |
| Pin 7 | RA1/D-/AN1/ICSPDAT — GPIO / USB D- / ADC input / ICSP data |
| Pin 8 | RA2/INT/MCLR/VPP — GPIO / external interrupt / Master Clear reset (active-low) / programming voltage |
| Pin 9 | RC0/SOSC1/SCLKI — GPIO / secondary oscillator / secondary clock input |
| Pin 10 | RC1/SOSC2/CCP2 — GPIO / secondary oscillator output / Capture/Compare/PWM 2 |
| Pin 11 | RC2/AN6/PWM1 — GPIO / ADC input / PWM output |
| Pin 12 | RC3/AN7/CCP1 — GPIO / ADC input / Capture/Compare/PWM 1 |
| Pin 13 | RC4/SDA — GPIO / I2C data |
| Pin 14 | RC5/SCL — GPIO / I2C clock |
Aplicaciones típicas
PIC16LF1454-I/ST es adecuado para 6 aplicacións: USB HID Peripheral (Keyboard, Mouse, Gamepad), USB-to-UART Serial Bridge, Capacitive Touch User Interface, Wearable Sensor Node / Fitness Tracker, Industrial Control Module (USB-Configurable), IoT Endpoint / Edge Sensor.
USB HID Peripheral (Keyboard, Mouse, Gamepad)
The PIC16LF1454-I/ST's integrated USB 2.0 full-speed device with on-chip transceiver and clock recovery makes it a near-ideal core for low-cost USB HID peripherals such as keyboards, mice, game controllers, and presentation clickers. Designers connect D- and D+ directly to the USB bus with a 1.5 kΩ pull-up on D- for full-speed enumeration; no external PHY is required. The 14 KB Flash comfortably fits HID report descriptors, button debounce state machines, and consumer-control feature reports, while the 48 MHz core sustains the 1 kHz USB polling interval with substantial headroom for LED PWM and capacitive touch scanning. The TSSOP-14 footprint keeps the BOM small enough to fit inside a USB cable dongle. Battery-powered variants benefit from nanoWatt XLP sleep current below 1 µA, allowing weeks of standby on a coin cell.
Recomendado
USB-to-UART Serial Bridge
For point-of-sale terminals, industrial debug consoles, and MCU firmware programming dongles, the PIC16LF1454-I/ST implements a CDC-ACM USB-to-UART bridge using only its on-chip USB module and USART peripheral. The CDC class enumerates without custom drivers on Windows, macOS, and Linux, eliminating the cost of an FTDI or CP2102 bridge IC. The 48 MHz core sustains 921600 baud with negligible jitter, while the 1 KB SRAM holds a 64-byte USB endpoint plus a 64-byte UART FIFO without dropping characters. The wide 1.8-5.5 V supply range lets the dongle present a UART at 3.3 V TTL or 5 V CMOS depending on the target board, and the TSSOP-14 package fits inside a USB Type-A connector housing.
Recomendado
Capacitive Touch User Interface
The PIC16LF1454-I/ST integrates Microchip's mTouch™ capacitive touch sensing module with up to 8 channels, allowing designers to implement button, slider, and wheel interfaces on the same MCU that drives USB communication or system logic. The 48 MHz core delivers the 10-20 MHz scan rate required for noise-immune proximity detection, and the 12-bit ADC option enables simultaneous temperature or battery-voltage monitoring. Combined with the 14 KB Flash (room for a full mTouch library plus application code), 1 KB SRAM (sample buffers), and nanoWatt XLP sleep below 1 µA for battery-powered touch remotes, the PIC16LF1454 covers most capacitive-touch UI designs from 2 to 8 buttons in a single chip.
Recomendado
Wearable Sensor Node / Fitness Tracker
Wearable fitness bands and BLE-connected sensor patches benefit from the PIC16LF1454-I/ST's nanoWatt XLP technology, which drops quiescent current below 1 µA in deep sleep between sensor samples, and its 1.8-5.5 V input range that accepts single-cell Li-ion or coin-cell supplies. The integrated ADC and MI2C bus interface directly with accelerometers, optical heart-rate sensors, and temperature ICs, while the 48 MHz core performs on-chip DSP-style filtering of motion data without an external DSP. The TSSOP-14 package drops into wristbands with strict size constraints, and 14 KB Flash holds a complete BLE HID-over-I2C bridge or ANT stack for ultra-low-power wireless body-area networks.
Recomendado
Industrial Control Module (USB-Configurable)
Factory-floor sensor modules, PLC expansion boards, and USB-configurable actuator controllers increasingly use the PIC16LF1454-I/ST as a self-powered USB node that exposes configuration parameters and diagnostics to a host PC. The integrated USB module negotiates full-speed enumeration without external glue logic, while the 14 KB Flash accommodates bootloaders plus Modbus RTU or CANopen configuration scripts. The -40C to +85C industrial temperature range supports outdoor cabinets and machine-side enclosures, and the 48 MHz core executes 1 ms control loops with comfortable margin. The TSSOP-14 footprint simplifies hand rework on legacy boards that need a USB retrofit.
Recomendado
IoT Endpoint / Edge Sensor
Battery-powered IoT endpoints transmitting via LoRa, sub-GHz, or BLE benefit from the PIC16LF1454-I/ST's deep-sleep current below 1 µA, integrated ADC for analog sensor reading, and USART for direct connection to common wireless modules. The 14 KB Flash fits LoRaWAN or BLE-Mesh application stacks for simple sensor nodes, while the 48 MHz core performs cryptographic checksums and local edge analytics. The wide 1.8-5.5 V supply range accepts solar-energy-harvesting regulators and 3.6 V Li-SOCl2 primary cells, allowing multi-year deployment on a single battery. The TSSOP-14 package enables miniaturized sensor pucks that fit inside sealed housings.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC16LF1454-I/ST — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC16F1454-I/ST | PIC16LF1454-E/ST | PIC16F1454-E/ST | PIC16LF1454-I/JQ |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TSSOP-14 | TSSOP-14 - same | TSSOP-14 - same | TSSOP-14 - same | UQFN-16 (different land pattern) |
| Operating Voltage Range | 1.8 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 5.5 V |
| Maximum CPU Speed | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Operating Temperature Range | -40C to +85C (Industrial) | -40C to +85C | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +85C |
| Flash Memory | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB |
| USB Module | USB 2.0 Full-Speed integrated | USB 2.0 Full-Speed integrated | USB 2.0 Full-Speed integrated | USB 2.0 Full-Speed integrated | USB 2.0 Full-Speed integrated |
| I/O Pin Count | 11 | 11 | 11 | 11 | 11 (in UQFN-16) |
Diferenciadores clave
- Lowest minimum operating voltage in the PIC16F145x family (frente a PIC16F1454-I/ST)
- Extended industrial temperature range option (frente a PIC16LF1454-I/ST (standard))
- Smaller footprint option via UQFN (frente a PIC16LF1454-I/ST (TSSOP-14))
Notas de diseño
The PIC16LF1454's nanoWatt XLP sleep currents are achieved only when unused peripherals are disabled in the PMDx, ANSEL, and TRIS registers, and when the ADC is powered down between samples. Engineers designing battery-life budgets should refer to datasheet section 28 (DC Characteristics) for the exact sleep-current contribution of the watchdog timer, BOR, and WDT. A typical configuration with BOR disabled and WDT off drops the deep-sleep current below 100 nA at 1.8 V, but enabling BOR raises it to roughly 600 nA - measure, do not assume, the effective standby current for the deployed firmware.
Place a 100 nF decoupling capacitor within 5 mm of the VDD pin and a 4.7 µF bulk capacitor on the same rail as the PIC16LF1454. The USB D- and D+ traces must be routed as a 90-ohm differential pair with length matching within 2 mm, and the 1.5 kΩ pull-up on D- (full-speed) should be tied to a 3.3 V rail generated from VDD, not to VBUS directly, to ensure clean enumeration during hot-plug events. Avoid routing digital switching signals (PWM, SPI) across the D+/D- pair or the 48 MHz oscillator traces to maintain USB signal integrity.
A common mistake with the PIC16LF1454 is configuring the internal 48 MHz PLL while leaving the system clock source bit set to the 31 kHz LFINTOSC; this causes the CPU to stall until the PLL locks. Configure HFINTOSC as the primary clock source first, then enable the PLL via the OSCTUNE SPLLEN bit, and finally switch the SCS bits to the PLL output. Another pitfall is forgetting that the MCLR pin (RA2/AN2) is shared with VPP for ICSP; leaving it as a digital input without a proper pull-up will keep the device in reset. Always tie MCLR to VDD through a 10 kΩ resistor unless external reset control is required.
Información de cumplimiento
RoHS compliant and lead-free per Microchip product page. AEC-Q100 qualification not explicitly stated; extended-temperature variants (-E suffix) cover -40C to +125C but are not automotive-qualified unless specifically designated. Halogen-free status not explicitly published in available data.
