PIC16LF1454T-I/SL - 8-bit MCU 14KB Flash USB 48MHz SOIC-14 | Microchip
MPN: PIC16LF1454T-I/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.73 | $1.73 |
| 10 | $1.55 | $15.50 |
| 100 | $1.3 | $130.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.04 | $1,040.00 |
| 2,600 | $0.96 | $2,496.00 |
PIC16LF1454T-I/SL Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), and programmable peripherals into one IC. The PIC16LF1454 belongs to the 8-bit MCU family (PIC > PIC16 > PIC16F/LF14xxx), which occupies the lower tier of the PIC hierarchy below 16-bit dsPIC and 32-bit SAM devices. It is optimized for cost-sensitive and energy-constrained applications requiring USB connectivity without external transceivers.
Key differentiating features of this part include: 14KB Flash (8K x 14 words), 1KB RAM, a 48MHz CPU clock derived from the internal 16MHz HFINTOSC, and on-chip USB 2.0 full-speed (12 Mbps) with integrated transceiver and 3.3V regulator. Additional peripherals include Enhanced Universal Synchronous/Asynchronous Receiver Transmitter (EUSART), Master Synchronous Serial Port (MSSP) for SPI and I2C, multiple PWM channels, a 10-bit ADC, and up to 12 programmable I/O pins with interrupt-on-change capability. The XLP technology drives typical WDT sleep current down to 600 nA.
Architecturally, this device implements Microchip's enhanced mid-range 16-bit instruction set (49 instructions, 16-bit wide) executed from Flash at a single cycle per instruction (except branches), providing a 48MHz throughput of up to 12 MIPS. The USB module includes a dedicated 3.3V internal regulator that powers the internal USB transceiver from a higher VDD bus, removing the need for an external USB pull-up or transceiver IC. The 14-bit instruction word allows dense code storage: 14KB Flash holds 8K single-word instructions, sufficient for USB class firmware with HID or CDC profiles and full application logic.
Typical applications include USB HID peripherals (keyboards, mice, custom input devices), USB-to-UART bridge dongles, low-cost data loggers with USB enumeration, consumer remote controls, sensor hubs exposed over USB, and battery-powered wearables exploiting XLP deep sleep. The part is also used in industrial USB isolator interfaces and educational prototyping boards such as Microchip's Low Pin Count USB Development Kit.
When designing with this part, allocate the 14KB Flash across a USB stack (3-5 KB in Microchip's MLA or MCC framework) plus application code, leaving room for bootloader support. Place a 0.1uF ceramic bypass on VDD adjacent to the SOIC pin, and a 10uF bulk capacitor on the USB VBUS pin with proper ESD protection (USBLC6-2 or equivalent) on data lines to meet IEC 61000-4-2 requirements.
Drop-in alternatives for PIC16LF1454T-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 PIC16LF1454T-I/SL (same form factor and footprint) — differing in Package, Program Memory (Flash), ADC, Core Architecture, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1454T-I/SL
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View Datasheet →PIC16LF1454-I/SL
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View Datasheet →PIC16LF1454T-I/JQ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
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View Datasheet →PIC16LF1455T-I/SL
✅ Drop-In✓ In Stock
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View Datasheet →PIC16F1454T-E/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F14K50T-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
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View Datasheet →PIC16LF1454T-I/SL Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC16 enhanced mid-range |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| CPU Speed (max) | 48 MHz (12 MIPS) |
| Operating Voltage | 1.8 V to 3.6 V |
| I/O Pins | 12 |
| USB Module | USB 2.0 Full-Speed (12 Mbps) with integrated transceiver |
| Other Peripherals | EUSART, MSSP (SPI/I2C), PWM, 10-bit ADC |
| Internal Oscillator | 16 MHz HFINTOSC with PLL |
| Package | SOIC-14 (3.90 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) |
| Low-Power Sleep Current | 600 nA typical (XLP WDT mode) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC16LF1454T-I/SL Pin Configuration
| Pin 1 | RA3/SS/VPP — Digital I/O / SPI slave select / Programming voltage |
| Pin 2 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| Pin 3 | RA5 — Digital I/O |
| Pin 4 | VDD — Positive supply voltage (1.8V to 3.6V) |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB7/ICSPDAT — Digital I/O / ICSP data |
| Pin 7 | RB6/ICSPCLK — Digital I/O / ICSP clock |
| Pin 8 | RB5/AN11 — Digital I/O / analog input channel 11 |
| Pin 9 | RB4/AN10 — Digital I/O / analog input channel 10 |
| Pin 10 | RB3/AN9 — Digital I/O / analog input channel 9 |
| Pin 11 | RB2/AN8 — Digital I/O / analog input channel 8 |
| Pin 12 | RB1/AN7/D-/VBUS — Digital I/O / analog input channel 7 / USB D- / VBUS sense |
| Pin 13 | RB0/AN6/D+ — Digital I/O / analog input channel 6 / USB D+ |
| Pin 14 | RA0/D-/NC — Digital I/O / Not connected or alternate USB D- |
Typical Applications
PIC16LF1454T-I/SL is suitable for 7 applications: USB HID Peripherals, USB-to-UART Bridge Dongle, USB Sensor Hub, Battery-Powered Wearable / IoT Node, Low-Cost Industrial Data Logger, USB Stick / Mass Storage Class Device, Educational / Maker Prototyping Board.
USB HID Peripherals
The PIC16LF1454T-I/SL excels in USB Human Interface Devices (HIDs) such as keyboard matrices, mice, joysticks, custom control panels, and barcode scanners. Its integrated USB 2.0 Full-Speed transceiver at 12 Mbps removes the need for an external FTDI bridge, while the 14KB Flash comfortably holds Microchip's MLA or MCC HID stack plus 4-6 KB of application code. The 1.8V to 3.6V supply range allows direct Li-Ion or 3.3V bus operation. The XLP sleep modes reduce idle current to 600 nA typical, so battery-powered wireless HID dongles can survive years on a single coin cell. Engineers typically connect the 12 I/O pins to a matrix keypad or rotary encoder input port, with the USB D+/D- pins externally protected by a USBLC6-2 for IEC 61000-4-2 ESD compliance.
Recommended
USB-to-UART Bridge Dongle
The PIC16LF1454T-I/SL acts as a USB-to-UART bridge in legacy serial-to-USB converters, debug adapters for microcontrollers, and industrial protocol gateways. Its on-chip USB, EUSART (12-bit BRG for asynchronous up to 1 Mbps), and 14KB Flash allow the entire CDC bridge firmware to fit without external memory. The internal 48 MHz PLL locks within 2 ms, enabling near-instant USB enumeration when the device is plugged in. With XLP deep-sleep at 10 nA, devices can disconnect gracefully. Typical circuits feed MCU TX/RX through an RS-232 line driver, with the SOIC-14 footprint allowing four-layer PCB integration in 1 square inch.
Recommended
USB Sensor Hub
Sensor hubs exposed over USB benefit from the PIC16LF1454T-I/SL's combination of USB 2.0 device, MSSP for I2C/SPI sensors, and 10-bit ADC for analog sensors. The part can poll temperature, humidity, and motion sensors over I2C at 100/400 kHz and present them as a composite HID or vendor-class USB device. With 14KB Flash, the hub can hold a USB stack plus 3-5 sensor drivers in raw C, while the 1.8V to 3.6V range suits battery-powered environmental monitors. Typical schematic: I2C SDA/SCL go directly to sensor pins, VDD is a 3.3V LDO off USB VBUS, and VBUS is sensed to enable USB enumeration.
Recommended
Battery-Powered Wearable / IoT Node
The PIC16LF1454T-I/SL is well suited to battery-powered wearables and IoT endpoints. XLP technology lowers WDT sleep current to 600 nA typical and full power-down to ~10 nA per Microchip datasheet. Battery voltage can be sensed through the ADC reference with internal bandgap, allowing accurate state-of-charge without an external fuel gauge. Typical use cases include fitness bands, BLE beacons, and remote controls; once the user activates the USB port, the on-chip 3.3V regulator powers internal USB and the application. The 12 I/O pins support button inputs, drive small LED indicators, and operate an I2C/SPI radio module; total quiescent idle current for the whole node can be under 2 uA.
Recommended
Low-Cost Industrial Data Logger
In industrial data logging, the PIC16LF1454T-I/SL streams sensor data to a host PC via USB and stores to internal Flash when unplugged. The 14KB Flash permits up to 32 KB of sensor buffering when using 14-bit instruction compression, and the on-chip EUSART drives RS-485 transceivers such as MAX485 for plant-floor networking. The industrial -40C to +85C temperature range handles outdoor cabinets and machine rooms. Engineers typically pair the part with a MAX31855 thermocouple digitizer or an ADS1115 ADC over I2C, then describe data as a custom USB vendor class device so any PC application can stream the readings.
Recommended
USB Stick / Mass Storage Class Device
The PIC16LF1454T-I/SL acts as the brain in low-cost USB Mass Storage Class (MSC) sticks when paired with an SPI Flash memory. With 14KB Flash, it can host the MSC stack plus a simple FAT handler, offloading all bulk data to a 32 MB or larger SPI serial NOR. The 48 MHz CPU delivers 12 MIPS, supporting 12 Mbps USB throughput with ~50% CPU headroom for descriptor handling. The internal USB transceiver means no external IC is required, minimizing BOM. The same SOIC-14 footprint supports housing designs that fit on a standard USB-A tongue; battery-less designs draw 500 mA peak as USB standard peripherals. The integrated 3.3V USB regulator provides high-current bus power isolation.
Recommended
Educational / Maker Prototyping Board
Microchip's Low Pin Count USB Development Kit, Curiosity board, and PICkit-3-based demos all center on PIC16LF1454T-I/SL as the USB target. With 14 KB Flash, 48 MHz, and USB, it teaches the full USB enumeration flow plus peripherals at low cost. Hobbyists commonly use Microchip Code Configurator (MCC) to generate HID or CDC demos and modify them for custom inputs. The SOIC-14 footprint is breadboard-friendly via breakout adapters, and the 12 I/O pins can be split between buttons (interrupt-on-change), LEDs, and a serial UART header. Adding a USBLC6-2 ESD array brings the design to production readiness.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1454T-I/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1454T-I/SL | PIC16LF1454-I/SL | PIC16LF1455T-I/SL | PIC16F1454T-E/SL |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-14 | SOIC-14 (same) | SOIC-14 (same) | SOIC-14 (same) | SOIC-14 (same) |
| Operating Voltage | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V |
| Flash Memory | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB |
| CPU Max Clock | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| USB Module | Full-Speed (12 Mbps) | Full-Speed (12 Mbps) | Full-Speed (12 Mbps) | Full-Speed (12 Mbps) | Full-Speed (12 Mbps) |
| Temperature Range | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) |
| I/O Pins | 12 | 12 | 12 | 12 | 12 |
| Sleep Current | 600 nA (XLP WDT) | 600 nA (XLP WDT) | 600 nA (XLP WDT) | 600 nA (XLP WDT) | 600 nA (XLP WDT) |
Key Differentiators
- Integrated USB 2.0 Full-Speed with internal 3.3V regulator and transceiver (vs PIC18F14K50T-I/SS)
- Low-voltage range down to 1.8V supports direct Li-Ion or coin-cell operation (vs PIC16F1454T-I/SL)
- XLP technology delivers 600 nA typical sleep current (vs Generic 8-bit MCUs without XLP)
Design Notes
Estimated based on datasheet guidance: place a 0.1uF X7R ceramic bypass within 2 mm of VDD (pin 4), a 10uF X5R bulk capacitor within 5 mm, and a 100 nF decoupling cap adjacent to the VSS pin. Decouple USB VBUS with a 10uF tantalum or ceramic if the device is USB-powered. Avoid sharing the bypass ground return with USB data line return path or the high-current motor drivers. With USB enumeration drawing 100 mA peak, the bulk cap must hold VDD above 3.0V during the 100 ms inrush ramp to prevent MCU brown-out.
Estimated: keep USB D+ (pin 13) and D- (pin 12) traces impedance-matched to 90 ohms differential, length-matched within 2 mm, and isolated from high-frequency digital lines. Use a 4-layer PCB with solid VDD/VSS planes for clean USB signaling. Place USBLC6-2 ESD protection diodes within 3 mm of the USB connector and a ferrite bead for EMI suppression, with the protection's capacitance kept under 3 pF so the 12 Mbps signal integrity is not degraded per IEC 61000-4-2 testing.
Pitfall 1: The PIC16LF1454 LF variant minimum VDD is 1.8V. Design reviews often confuse it with the F variant (2.3V minimum). Always verify 'LF' ordering code before PCB build. Pitfall 2: USB enumeration fails if the internal 3.3V USB regulator's load is too low; add a 100 kohm pull-up on the regulator output if standalone design has no draw. Pitfall 3: Programming mode uses pin 1 (RA3/SS/VPP) at high voltage; isolate VPP from external circuits with a diode to prevent back-drive into a coin-cell input. Pitfall 4: XLP sleep current specified only with explicit 'XLP' enabled firmware macros - default SLP instructions do not deliver 600 nA mode.
Compliance Information
RoHS compliant and lead-free per Microchip product documentation. Halogen-free per Microchip environmental statement. AEC-Q100 qualification not claimed for the I/SL industrial temperature grade; higher-grade parts are not directly available in this SKU. Microchip participates in the Responsible Minerals Assurance Process (RMAP) for conflict-minerals reporting.
