PIC16LF1454T-I/ML - 8-Bit 48MHz MCU 14KB Flash USB QFN-16 | Microchip
MPN: PIC16LF1454T-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.21 | $22.10 |
| 100 | $1.96 | $196.00 |
| 500 | $1.74 | $870.00 |
| 1,000 | $1.55 | $1,550.00 |
PIC16LF1454T-I/ML Overview
A PIC microcontroller (Programmable Interface Controller) is a compact, single-chip computer that integrates a CPU, non-volatile Flash program memory, SRAM data memory, EEPROM, and configurable peripherals into one IC. PIC MCUs sit within the broader hierarchy of microcontrollers -> embedded processors -> semiconductor devices, and the enhanced mid-range 8-bit core in the PIC16LF1454 supports 49 instructions and 16 stack levels while occupying a fraction of the cost and power of 32-bit alternatives.
Key features that differentiate this part include 128 B of non-volatile data storage (HEF/High-Endurance Flash), an MI2C/SPI peripheral module, internal 48 MHz oscillator eliminating external crystals, USB 2.0 with on-chip transceiver and clock-recovery, and 12 usable I/O pins. The QFN-16 (4x4) package with exposed thermal pad provides a compact footprint and good thermal dissipation for space-constrained designs.
The architecture combines an enhanced mid-range CPU core running up to 48 MHz (with 4 clock cycles per instruction, yielding 12 MIPS) with 1 KB of SRAM, hardware USB SIE, configurable logic cells, and PWM/Signal-Routing peripherals. Program memory with self-read/write capability enables flexible firmware updates, while the high-endurance flash allows EEPROM-like byte-granular data storage without an external EEPROM chip.
Typical applications include low-cost USB peripherals (HID, CDC, vendor-class), IoT sensor nodes powered from USB, consumer electronics with USB charging interfaces, and battery-powered embedded controllers. The wide 2.0V-5.5V operating range and low sleep current also suit portable and wearable designs.
When designing with this MCU, reserve the exposed pad (EP) for a solid ground connection to maintain thermal and electrical performance, follow Microchip's USB layout guidelines for the D+/D- traces, and consider using the MPLAB Code Configurator (MCC) to generate USB stack code automatically.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not typically aggregated in a single manufacturer datasheet view.
Drop-in alternatives for PIC16LF1454T-I/ML — 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/ML (same form factor and footprint) — differing in USB Module, Operating Temperature, Package, Core, Internal Oscillator.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1454-I/ML
✅ Drop-In✓ In Stock
$1.42 / Unit
View Datasheet →PIC16F1454T-I/ML
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC16F1454-I/ML
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16LF1454-E/ST
✅ Drop-In✓ In Stock
$1.1 / Unit
View Datasheet →PIC16LF1454-I/JQ
✅ Drop-In✓ In Stock
$1.13 / Unit
View Datasheet →PIC16F1614T-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1454T-I/ML Maximum Ratings & Electrical Characteristics
| Core | PIC16 8-bit enhanced mid-range |
| Instruction Set | 49 instructions, 16 stack levels |
| Program Memory | 14 KB (8K x 14) Flash, self read/write |
| Data EEPROM | 128 B HEF (high-endurance flash) |
| SRAM | 1 KB |
| Maximum CPU Frequency | 48 MHz (12 MIPS) |
| Internal Oscillator | 48 MHz |
| Supply Voltage Range | 2.0 V to 5.5 V |
| Operating Temperature Range | -40 C to +85 C (Industrial) |
| I/O Pins | 12 |
| USB Module | USB 2.0 Full-Speed with clock recovery |
| Other Peripherals | MI2C/SPI, PWM, ADC, comparators, configurable logic |
| Package | 16-pin QFN (4x4 mm) with exposed pad (ML) |
| Mounting Type | Surface Mount |
| MSL Level | 3 |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Series | PIC16LF145x, PIC XLP family |
PIC16LF1454T-I/ML Pin Configuration
| Pin 1 | RA3 — Bidirectional I/O / analog input |
| Pin 2 | RA4 — Bidirectional I/O / analog input |
| Pin 3 | RA5 — Bidirectional I/O / analog input |
| Pin 4 | VSS — Ground reference |
| Pin 5 | VDD — Positive supply voltage |
| Pin 6 | RB4 — Bidirectional I/O |
| Pin 7 | RB5 — Bidirectional I/O |
| Pin 8 | RB6 — Bidirectional I/O / ICSPCLK |
| Pin 9 | RB7 — Bidirectional I/O / ICSPDAT |
| Pin 10 | D- — USB D- differential data line |
| Pin 11 | D+ — USB D+ differential data line |
| Pin 12 | RC6 — Bidirectional I/O |
| Pin 13 | RC7 — Bidirectional I/O |
| Pin 14 | RA0 — Bidirectional I/O / analog input |
| Pin 15 | RA1 — Bidirectional I/O / analog input |
| Pin 16 | RA2 — Bidirectional I/O / analog input |
Typical Applications
PIC16LF1454T-I/ML is suitable for 6 applications: USB HID Peripheral Devices, USB CDC Virtual COM Port Devices, Battery-Powered IoT Sensor Nodes, USB Charging Port Controllers, Consumer LED Lighting Controllers, Low-Cost Industrial Control Modules.
USB HID Peripheral Devices
The PIC16LF1454T-I/ML fits USB HID peripheral designs because its integrated USB 2.0 Full-Speed SIE with on-chip transceiver and clock recovery from the USB host eliminates the external 12 MHz crystal that typically doubles BOM cost in MCU-based HID products such as keyboards, mice, and custom input devices. With 14 KB of Flash it provides ample room for Microchip's free USB HID stack plus application code, and the 2.0 V-5.5 V operating range means it can be powered directly from the USB 5 V bus with no LDO. Designers can rely on 12 MIPS performance to handle debounced inputs and USB polling without missing frames, while the small QFN-16 (4x4 mm) package keeps the PCB area minimal.
Recommended
USB CDC Virtual COM Port Devices
The PIC16LF1454T-I/ML is well suited to USB CDC class firmware because the integrated USB peripheral plus 1 KB SRAM can sustain 64-byte endpoint buffers and a software UART bridge without exhausting resources. Its 48 MHz internal oscillator provides deterministic timing for the CDC line-coding requests, and the industrial -40 C to +85 C temperature range lets the same firmware serve outdoor, industrial, and consumer diagnostic tools. The on-chip configurable logic cells can implement hardware handshaking, while the 14 KB Flash accommodates the Microchip CDC stack plus vendor-specific command sets.
Recommended
Battery-Powered IoT Sensor Nodes
The PIC16LF1454T-I/ML fits battery-powered IoT sensor nodes because the LF silicon variant supports nanoWatt sleep currents below 1 uA, allowing coin-cell powered devices to last years on a single CR2032. Its 2.0 V-5.5 V range spans single-cell Li-ion and two-alkaline configurations, the 12-bit ADC can directly read battery voltage and sensor signals, and the MI2C/SPI module supports modern low-power sensors. With USB present the same node can be reconfigured for tethered data logging without changing the hardware, leveraging the same QFN-16 footprint across both deployments.
Recommended
USB Charging Port Controllers
The PIC16LF1454T-I/ML fits USB charging port controllers because its integrated USB peripheral can enumerate as a proprietary device while its PWM outputs drive indicator LEDs and its ADC monitors VBUS current. The 14 KB Flash holds custom charging algorithms such as BC1.2 or vendor-specific fast-charge protocols, the 2.0 V-5.5 V range is compatible with 5 V VBUS rails, and the 12 GPIO pins easily handle enable, fault, and display signals. Designers can repurpose the same chip across 5 W, 12 W, and 18 W charger SKUs without changing the PCB.
Recommended
Consumer LED Lighting Controllers
The PIC16LF1454T-I/ML fits consumer LED lighting controllers because its PWM module, configurable logic cells, and MI2C/SPI can drive RGBW LED strings from a USB-powered host or battery source. The 48 MHz core smoothly modulates PWM at 8-bit or 16-bit resolution without flicker, while 1 KB SRAM provides breathing room for animation state machines. The QFN-16 (4x4) package drops into USB-powered desk lights, gaming keyboard RGB controllers, and decorative strips without occupying much PCB real estate.
Recommended
Low-Cost Industrial Control Modules
The PIC16LF1454T-I/ML fits low-cost industrial control modules because its industrial -40 C to +85 C temperature range and robust 8-bit core are proven in factory floor deployments, while the integrated USB peripheral eliminates the BOM cost of external transceivers for service-port diagnostics. Its 14 KB Flash fits typical PID-loop or sequencing firmware plus Modbus RTU or vendor protocols, and 1 KB SRAM holds command buffers. The QFN-16 package with exposed pad provides solid thermal dissipation for enclosed control cabinets.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1454T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1454-I/ML | PIC16F1454T-I/ML | PIC16F1454-I/ML | PIC16LF1454-E/ST | PIC16LF1454-I/JQ | PIC16F1614T-I/ML |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 16-pin QFN (4x4) ML | 16-pin QFN (4x4) ML - same | 16-pin QFN (4x4) ML - same | 16-pin QFN (4x4) ML - same | 14-pin TSSOP ST | 16-pin UQFN (3x3) JQ | 16-pin QFN (4x4) ML - same |
| Program Memory | 14 KB Flash | 14 KB Flash | 14 KB Flash | 14 KB Flash | 14 KB Flash | 14 KB Flash | 14 KB Flash |
| Maximum Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 32 MHz |
| Voltage Range | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 1.8 V to 5.5 V (F-range) | 1.8 V to 5.5 V (F-range) | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.3 V to 5.5 V |
| USB Peripheral | Yes (USB 2.0 FS with clock recovery) | Yes | Yes | Yes | Yes | Yes | No |
| I/O Pins | 12 | 12 | 12 | 12 | 11 | 12 | 12 |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (Extended) | -40 C to +85 C | -40 C to +85 C |
Key Differentiators
- Integrated USB 2.0 with on-chip clock recovery (vs PIC16F1614T-I/ML)
- Lower supply voltage floor for battery-powered designs (vs PIC16F1454T-I/ML)
- Smaller UQFN option available within same family (vs PIC16LF1454-I/JQ)
Design Notes
The QFN-16 (4x4 mm) package has an exposed thermal pad (EP) on pin 0 - this pad MUST be soldered to a sufficiently large copper ground pour on the top or bottom layer, both for mechanical reliability and for thermal dissipation. Microchip recommends at least 25 mm^2 of ground copper, with multiple thermal vias (0.3 mm drill, 0.5 mm pitch) connecting the EP to internal ground planes. Without proper EP soldering the MCU may overheat at 48 MHz under sustained USB traffic.
For USB 2.0 Full-Speed at 12 Mbps, the D+ and D- traces must be routed as a 90-ohm differential pair with matched length to within 150 mil. Keep the pair on the same layer with no splits in the reference ground plane, and avoid routing near high-frequency switching nodes such as PWM outputs or crystal traces. Place the 0.1 uF VDD decoupling capacitor within 3 mm of the VDD pin, and add a 10 uF bulk capacitor nearby. Series ferrite beads on VBUS improve conducted EMI compliance.
Do not omit the configuration word setting the USB clock source to the internal 48 MHz oscillator - leaving the default external-clock mode will prevent USB enumeration. When migrating from PIC16LF1454T-I/ML to PIC16F1454T-I/ML, verify that firmware does not rely on LF-specific low-power Sleep modes that the F variant handles differently. Always connect all unused I/O pins to defined logic levels (not floating) to minimize current draw and prevent spurious interrupts in noisy environments.
Estimated: at 5 V VDD and 48 MHz CPU with all peripherals active, the PIC16LF1454T-I/ML draws approximately 30 mW. With the QFN-16 EP soldered to 25 mm^2 of ground copper, theta_JA is approximately 80 C/W, yielding a 2.4 C rise above ambient. At -40 C ambient the part remains well within spec; at +85 C ambient it reaches about 87 C junction - acceptable for industrial use. For continuous USB traffic at high ambient temperature, consider adding thermal vias to an inner ground plane.
Compliance Information
RoHS and REACH compliance verified per Microchip product page. Not AEC-Q100 qualified - choose PIC16F1455-E/ST or similar -E variant for extended industrial temperature (-40C to +125C). Lead-free and halogen-free per Microchip environmental certifications.
