PIC16LF1454-I/SL - 8-Bit USB MCU, 14KB Flash, 48MHz | Microchip
MPN: PIC16LF1454-I/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.95 | $1.95 |
| 10 | $1.78 | $17.80 |
| 100 | $1.62 | $162.00 |
| 500 | $1.41 | $705.00 |
| 1,000 | $1.24 | $1,240.00 |
| 3,000 | $1.05 | $3,150.00 |
PIC16LF1454-I/SL Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (Flash for program, SRAM for data), and peripherals on one die. The PIC16F family is Microchip's mid-range 8-bit architecture with a RISC instruction set, optimized for deterministic interrupt latency, ultra-low-power sleep modes, and peripheral-rich designs. The PIC16LF1454 sits in Microchip's eXtreme Low Power (XLP) family and uniquely integrates a full-speed USB 2.0 peripheral (with an internal 3.3 V LDO and 48 MHz PLL) at this package size and price point.
Key features include 14 KB self-programmable Flash, 512 bytes SRAM, hardware USB 2.0 full-speed with on-chip transceiver, two PWM modules, a 10-bit ADC with up to 9 channels, an analog comparator, and the enhanced mid-range 16-bit instruction set. The internal 48 MHz oscillator eliminates external crystals in many USB designs, and XLP technology delivers nanoWatt sleep currents in the tens of nanoampere range, making the part well-suited to battery-powered or bus-powered devices.
Architecturally the device pairs an 8-bit ALU with a 14-bit program word and a 16-level hardware stack. The USB module is clocked from the 48 MHz PLL, and an internal 3.3 V regulator powers the USB transceiver from VDD, so no external LDO is required when VDD is 3.6 V or higher. The CIP (Core Independent Peripherals) set allows ADCs, PWMs, and timers to operate in sleep without CPU intervention, extending battery life.
Typical applications include low-cost USB HID peripherals (keyboards, mice, custom HID), USB-to-UART bridges, CDC virtual COM ports, USB sensor dongles, wearable fitness devices, and any size-constrained consumer product that needs USB connectivity on a coin-cell battery. The wide 1.8-3.6 V range supports direct Li-ion cell operation and 3.3 V system buses.
Designers should budget for a pull-up on D+ (per USB spec) and place the 0.1 uF VDD decoupling capacitor within 5 mm of the pin. The ICSP pins (RB6/RB7) are multiplexed with USB lines, so an ICSP header should include isolation resistors to allow USB operation during programming. Pin 14 ("??" pin) must be tied to VDD for normal operation per datasheet guidelines.
This page synthesizes distributor pricing, drop-in same-package alternatives, and design notes not bundled in the manufacturer datasheet - useful for sourcing, BOM optimization, and second-source selection.
Drop-in alternatives for PIC16LF1454-I/SL — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16LF1454-I/SL (same form factor and footprint) — differing in Package, Operating Temperature, USB Module, I/O Pins, PWM Modules.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1454-I/SL
✅ Drop-In✓ In Stock
$1.15 / Unit
View Datasheet →PIC16LF1455-I/SL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.62 / Unit
View Datasheet →PIC16LF1454-I/SL Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 enhanced mid-range 8-bit RISC |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data Memory (SRAM) | 512 bytes |
| Maximum CPU Speed | 48 MHz (DC - 48 MIPS) |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| USB Module | USB 2.0 Full-Speed (12 Mbps) device with internal transceiver and 3.3 V LDO |
| ADC | 10-bit, up to 9 channels |
| PWM Modules | 2 x 10-bit PWM (ECCP + CCP) |
| Timers | Timer0, Timer1, Timer2 |
| Comparators | 1 analog comparator |
| I/O Pins | 11 (with interrupt-on-change) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Package | 14-SOIC (SL) - 3.90 mm body |
| Mounting Type | Surface Mount (Gull Wing) |
| RoHS Status | Compliant |
| MSL Level | 1 (unlimited floor life) |
| Pin Count | 14 |
PIC16LF1454-I/SL Pin Configuration
| Pin 1 | RA3/RE3/MCLR — Digital I/O / MCLR reset input with internal weak pull-up |
| Pin 2 | RA4/AN3 — Digital I/O / Analog input channel 3 |
| Pin 3 | RA5/AN4 — Digital I/O / Analog input channel 4 |
| Pin 4 | RC0/AN8 — Digital I/O / Analog input channel 8 |
| Pin 5 | RC1/AN9 — Digital I/O / Analog input channel 9 |
| Pin 6 | RC2/P1D — Digital I/O / PWM output 1D |
| Pin 7 | RC3/P1C — Digital I/O / PWM output 1C |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RC4/D-/ICSPDAT — USB D- / ICSP data (alternately functions as ICSPDAT) |
| Pin 10 | RC5/D+/ICSPCLK — USB D+ / ICSP clock (alternately functions as ICSPCLK) |
| Pin 11 | RB4/AN10 — Digital I/O / Analog input channel 10 |
| Pin 12 | RB5/AN11 — Digital I/O / Analog input channel 11 |
| Pin 13 | RB6/ICSPCLK — Digital I/O / ICSP clock (alternately functions as ICSPCLK) |
| Pin 14 | VDD — Positive supply input 1.8V-3.6V |
Typical Applications
PIC16LF1454-I/SL is suitable for 7 applications: USB HID Peripheral (Keyboard, Mouse, Custom HID), USB CDC Virtual COM Port Bridge, USB Sensor Dongle, Wearable Fitness / Health Device, USB-to-GPIO Industrial Controller, USB-Connected LED Controller / Lighting Dongle, Educational USB Development Platform.
USB HID Peripheral (Keyboard, Mouse, Custom HID)
The PIC16LF1454-I/SL's USB 2.0 Full-Speed controller plus 14 KB Flash and 11 I/O pins make it a strong fit for USB HID peripherals. In a USB keyboard, the MCU scans the switch matrix, generates HID boot reports over USB, and the internal 3.3 V LDO powers the USB pull-up. The 48 MHz HFINTOSC eliminates the external crystal, and the 1.8-3.6 V range permits bus-powered operation from a 3.3 V regulator. The XLP sleep currents extend battery life in wireless-tethered HID devices. Trade-off: 14 KB Flash limits complex multi-mode HID devices (e.g., backlit gaming keyboards need 32+ KB).
Recommended
USB CDC Virtual COM Port Bridge
The PIC16LF1454-I/SL is well-suited to USB-to-UART bridges using the CDC class, presenting a virtual COM port to the host and a hardware UART on pins RC6/RC7. With 14 KB Flash, designers can implement USB stack, CDC ACM descriptors, and a 256-byte UART ring buffer. The 48 MHz clock supports the 12 Mbps USB rate with margin for protocol overhead. Operating from 3.3 V, it pairs directly with 3.3 V Bluetooth/WiFi modules for debug-printf logging in IoT prototypes. Trade-off vs an FTDI chip: lower BOM cost at the price of writing the USB stack from scratch or using Microchip's MLA library.
Recommended
USB Sensor Dongle
The PIC16LF1454-I/SL's 10-bit ADC and 11 I/O allow direct connection to analog sensors (temperature, light, gas), and the USB interface streams digitized values to a host application. The 1.8-3.6 V range supports coin-cell operation for portable sensor data loggers. The XLP sleep mode drops current below 1 uA between measurements, extending battery life in long-duration environmental monitors. Designers can implement 1 ksps streaming over USB with the 48 MHz instruction rate. Trade-off: only 512 B SRAM limits buffer depth; sensors with >100 sps rate need larger memory.
Recommended
Wearable Fitness / Health Device
The PIC16LF1454-I/SL's nanoWatt XLP sleep currents and 1.8 V operation directly support coin-cell powered wearables such as step counters, heart-rate bands, or fitness dongles. With 14 KB Flash, the MCU implements BLE-USB bridging via external radio, or direct USB charging for dongle form factors. The 11 I/O accommodate I2C sensors (accelerometer, optical HR) and a haptic driver. The internal 10-bit ADC samples the battery voltage for fuel gauge functions. Trade-off: the 8-bit core is slower than ARM Cortex-M0+ for FFT or DSP, so signal-processing intensive algorithms may not fit.
Recommended
USB-to-GPIO Industrial Controller
The PIC16LF1454-I/SL's 11 I/O pins, two PWM channels, and 10-bit ADC make it appropriate for low-cost industrial control bridges that expose GPIO/PWM/ADC to a host PC over USB. The -40 C to +85 C industrial temperature rating meets factory-floor requirements. The internal 3.3 V LDO simplifies bus-powered designs where VBUS is the only supply. The 14 KB Flash can hold USB stack plus custom command sets. Trade-off: only 11 I/O limits the channel count - for multi-channel control, step up to PIC16LF1459 in 28-pin package.
Recommended
USB-Connected LED Controller / Lighting Dongle
The PIC16LF1454-I/SL drives WS2812 addressable RGB LED strips over USB using its 10-bit PWM and 48 MHz speed for bit-banging the WS2812 protocol. The 14 KB Flash holds USB HID descriptors and color animation libraries. Direct 5 V supply is NOT supported (LF max is 3.6 V), but level shifters to the LED strip from a 5 V rail allow the MCU to operate from 3.3 V while driving 5 V LEDs. The 1.8-3.6 V range supports low-voltage driving of single-cell Li-ion powered accent lighting. Trade-off: bit-banged WS2812 consumes CPU cycles; SPI-based APA102 LEDs are more efficient but cost more.
Recommended
Educational USB Development Platform
The PIC16LF1454-I/SL is a popular choice for university labs and hobbyists learning USB protocol and embedded development. The integrated USB controller and free Microchip MPLAB X IDE ecosystem (with XC8 compiler and MLA USB stack) lower the learning curve. The 14-SOIC package is breadboard-friendly with a SOIC-to-DIP adapter. The 14 KB Flash comfortably holds CDC, HID, and vendor-class reference examples. Trade-off: the 8-bit architecture is slower than ARM Cortex parts, so students should set expectations for slower execution.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1454-I/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1454-I/SL | PIC16LF1455-I/SL | PIC16LF1454-I/ML | CY7C63413C-PXC |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Infineon (formerly Cypress) |
| Package | 14-SOIC (SL) | 14-SOIC (SL) - same | 20-pin (NOT drop-in) | 20-QFN (NOT drop-in) | 40-DIP (NOT drop-in) |
| Program Memory (Flash) | 14 KB | 14 KB | 16 KB | 14 KB | 8 KB |
| Data Memory (SRAM) | 512 bytes | 512 bytes | 1 KB | 512 bytes | 256 bytes |
| Operating Voltage | 1.8 V to 3.6 V | 2.5 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 4.0 V to 5.5 V |
| Max CPU Speed | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 12 MHz |
| USB Module | USB 2.0 Full-Speed (12 Mbps) | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 1.1 Low-Speed (1.5 Mbps) |
| I/O Pins | 11 | 11 | 15 | 14 | 32 |
Key Differentiators
- Lowest-cost PIC16 with integrated USB 2.0 full-speed (vs PIC16F1454-I/SL)
- Smallest USB-capable MCU in PIC16F family (14-SOIC) (vs CY7C63413C-PXC (Infineon))
- On-chip 48 MHz HFINTOSC with PLL eliminates external crystal (vs PIC16LF1459 (28-pin))
Design Notes
Estimated: at full CPU activity (48 MHz, all peripherals active), the PIC16LF1454-I/SL draws roughly 6-8 mA from a 3.3 V VDD. In sleep (XLP mode), the part drops below 1 uA typical. For bus-powered USB designs, ensure the upstream port can supply the inrush current during VDD ramp. Add a 100 nF decoupling capacitor within 5 mm of pin 14 (VDD) and a 4.7 uF bulk capacitor for USB inrush events. The internal 3.3 V USB LDO drives only the USB transceiver rail, not the I/O.
Place the 1.5 kOhm USB pull-up resistor on the D+ line (RC5, pin 10) as close to the pin as possible, with the resistor tied to the internal 3.3 V LDO output (the VUSB3V3 pin function). The PCB trace to D+/D- must be 90-ohm differential, length-matched to within 2 mm, and routed over a continuous ground plane for USB compliance. Keep USB traces away from switching power or high-current signals to avoid radiated emissions.
Pin 14 (VDD) must be tied to the supply, never left floating. Pin 1 (MCLR/RA3) requires the internal weak pull-up enabled or an external 10 kOhm pull-up to VDD for normal operation; leaving MCLR floating can cause spurious resets. The ICSP pins (RB6/ICSPCLK pin 13, RB7/ICSPDAT pin 11) share with general I/O, so add 470-ohm isolation resistors in series with the ICSP header if USB is active during programming.
The PIC16LF1454-I/SL's 14-SOIC package has a theta_JA of approximately 80 C/W. In typical USB peripheral applications, the part dissipates under 30 mW, so thermal rise is negligible (<3 C). At extreme industrial temperatures (+85 C ambient), designers should still verify the package is not mounted against a large heat-sinking plane that prevents ambient airflow.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified (not designed for automotive). Industrial -40C to +85C temperature grade only.
