PIC16F1454T-I/ML - 8-bit USB MCU, 14KB Flash, 16-QFN | Microchip
MPN: PIC16F1454T-I/ML β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.66 | $16.60 |
| 100 | $1.47 | $147.00 |
| 500 | $1.31 | $655.00 |
| 1,000 | $1.18 | $1,180.00 |
PIC16F1454T-I/ML Overview
A microcontroller (MCU) is a single-chip computer that contains a CPU core, program memory, data memory, and programmable I/O peripherals. The PIC16F1454 belongs to the 8-bit MCU category, occupying the smallest performance tier in the embedded computing hierarchy. Within that category it is a flash-based, RISC-architecture device with on-chip peripherals. The 'F' suffix denotes flash memory, '16' denotes the mid-range architecture family, and '1454' identifies the specific peripheral mix. The 'T' suffix indicates tape-and-reel packaging, 'I' indicates the industrial temperature range, and 'ML' is the package designator for the 16-QFN with exposed pad.
Key features include 12 I/O pins capable of 25 mA source/sink, an internal 48 MHz oscillator accurate to within +/-0.25% across the full operating range, and eXtreme Low Power (XLP) technology with typical sleep currents below 1 uA. The integrated USB 2.0 Full-Speed module includes a dedicated 3.3V internal regulator for the USB transceiver, supporting bus-powered and self-powered device applications. Communication peripherals include an MI2C/SPI module, an enhanced USART with auto-baud detection, and dual PWM modules with complementary outputs.
The PIC16F1454 uses a 14-bit instruction word architecture with a 16-level hardware stack and Harvard bus topology separating program and data memory paths. The CPU executes one instruction per two clock cycles through a four-stage pipeline, yielding 48 MHz core throughput. The device supports in-circuit serial programming (ICSP) and in-circuit debugging via Microchip's MPLAB X IDE, with breakpoints and runtime watch variables accessible through the MPLAB ICD 3 or PICkit 4 tool chain.
Typical applications include USB HID peripherals such as keyboards, mice, and custom input devices, USB-to-UART bridges, low-cost data loggers, sensor interface modules, and consumer electronics requiring USB connectivity without an external crystal. The XLP technology extends battery life in portable instrumentation and remote sensor nodes. The compact 4x4 mm QFN footprint is also well-suited to space-constrained wearables and IoT edge devices.
When designing with the PIC16F1454, route the exposed pad (EP) to a solid ground plane through at least nine thermal vias to manage the 0.5 W dissipation budget under worst-case USB bus-powered loading. The USB D+/D- lines require 45 ohm single-ended impedance with matched-length routing within 150 mil tolerance to comply with USB 2.0 signal-integrity specifications. The internal 3.3V regulator output (VBUS3V3 pin) must be bypassed with 1 uF and 0.01 uF capacitors placed within 50 mils of the pin.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single manufacturer product page, enabling engineers to evaluate the PIC16F1454T-I/ML against same-footprint replacements for supply-chain resilience.
Drop-in alternatives for PIC16F1454T-I/ML β 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 PIC16F1454T-I/ML (same form factor and footprint) β differing in I/O Pins, Operating Temperature, USB Module, Core Architecture, Instruction Set.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16F1455T-I/ML
β Drop-Inπ Reference alternative (not in catalog)
PIC16F1459T-I/ML
β Drop-Inβ In Stock
$1.62 / Unit
View Datasheet βPIC16F1454-E/ML
β Drop-Inβ In Stock
$1.18 / Unit
View Datasheet βPIC16F1455-E/ML
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
PIC16F1459-E/ML
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
PIC16F1454T-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 Enhanced Mid-Range (8-bit RISC) |
| Instruction Set | 49 Instructions, 14-bit word width |
| Maximum Clock Frequency | 48 MHz |
| Instruction Execution Time | 200 ns at 48 MHz |
| Flash Program Memory | 14 KB (8K x 14) |
| SRAM Data Memory | 1 KB |
| Non-volatile Data Storage (HEF) | 128 B |
| Stack Levels | 16 (hardware) |
| I/O Pins | 12 |
| I/O Current Source/Sink | 25 mA per pin |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| USB Module | USB 2.0 Full-Speed with clock recovery from host |
| Operating Temperature | -40 C to +85 C (Industrial, 'I' suffix) |
| Package Type | 16-QFN (4x4 mm) with Exposed Pad (ML) |
| RoHS Status | Compliant |
| Programming/Debug Interface | ICSP via MPLAB ICD 3 / PICkit 4 |
| Communication Peripherals | USB 2.0 FS, MI2C/SPI, Enhanced USART |
PIC16F1454T-I/ML Pin Configuration
| Pin 1 | VDD β Positive supply voltage input (2.3V to 5.5V) |
| Pin 2 | RA5 β Bidirectional I/O pin / digital input |
| Pin 3 | RA4 β Bidirectional I/O pin / digital input |
| Pin 4 | RA3/MCLR/VPP β Bidirectional I/O / Master Clear reset (active low) / programming voltage |
| Pin 5 | RC5 β Bidirectional I/O pin / PWM output |
| Pin 6 | RC4 β Bidirectional I/O pin / PWM output |
| Pin 7 | RC3 β Bidirectional I/O pin / SCL for I2C |
| Pin 8 | RC2 β Bidirectional I/O pin / SDA for I2C |
| Pin 9 | RC1 β Bidirectional I/O pin / analog input |
| Pin 10 | RC0 β Bidirectional I/O pin / analog input |
| Pin 11 | VSS β Ground reference |
| Pin 12 | RA2 β Bidirectional I/O pin / analog input |
| Pin 13 | RA1/ICSPCLK β Bidirectional I/O / ICSP clock programming pin |
| Pin 14 | RA0/ICSPDAT β Bidirectional I/O / ICSP data programming pin |
| Pin 15 | RC6/D+ β Bidirectional I/O / USB D+ data line |
| Pin 16 | RC7/D- β Bidirectional I/O / USB D- data line |
| Pin 17 | EP β Exposed thermal pad - must be soldered to ground plane |
Typical Applications
PIC16F1454T-I/ML is suitable for 6 applications: USB HID Peripheral Devices, USB-to-UART Bridge Modules, Battery-Powered Sensor Nodes, Consumer USB Chargers and Power Banks, Industrial Control Panels with USB Diagnostics, USB LED Lighting Controllers.
USB HID Peripheral Devices
The PIC16F1454T-I/ML is purpose-built for USB Human Interface Device class peripherals such as custom keyboards, mice, game controllers, and barcode scanners. Its integrated USB 2.0 Full-Speed module with host clock recovery eliminates the external 12 MHz crystal traditionally required, reducing BOM cost by $0.30-$0.50 and freeing two PCB pads for compact wearable designs. With 14 KB flash and 1 KB SRAM, the device can implement standard HID boot reports plus vendor-defined feature reports for OEM customization, all running at the full 48 MHz CPU throughput for sub-millisecond polling interval response.
Recommended
USB-to-UART Bridge Modules
The PIC16F1454T-I/ML is widely deployed as a low-cost USB-to-UART bridge in development tools, industrial field-service adapters, and legacy serial-port replacement modules. The enhanced USART module supports auto-baud detection from 300 baud to 1 Mbaud, while the USB CDC class implementation enumerates as a virtual COM port on Windows, macOS, and Linux without driver installation. The 14 KB flash accommodates USB stack, CDC handler, and configurable baud-rate translation tables. The 16-QFN 4x4 mm footprint fits into compact dongle form factors.
Recommended
Battery-Powered Sensor Nodes
The PIC16F1454T-I/ML's XLP (eXtreme Low Power) technology enables battery-powered sensor nodes with typical sleep current below 1 uA at 3 V, extending coin-cell battery life beyond 3 years in typical duty-cycled measurement applications. The 12 I/O pins support direct interface to SPI sensors, I2C peripherals, and analog inputs via the on-chip 10-bit ADC. The 1 KB SRAM accommodates temporary measurement buffers, while the 128 B HEF stores non-volatile calibration constants surviving power cycles. Industrial temperature rating suits outdoor environmental monitoring.
Recommended
Consumer USB Chargers and Power Banks
The PIC16F1454T-I/ML integrates USB BC 1.2 charger detection, voltage and current monitoring via the ADC, and GPIO-controlled load switches in a single 4x4 mm package, making it suitable for smart USB chargers and portable power banks. The 25 mA I/O source/sink capability directly drives LED status indicators and small relay coils without external drivers. The 14 KB flash supports USB-PD legacy detect algorithms and BC 1.2 CDP/DCP handshaking while leaving room for custom vendor protocols.
Recommended
Industrial Control Panels with USB Diagnostics
In industrial control panels and HMI front-ends, the PIC16F1454T-I/ML provides a USB diagnostic port for firmware update, parameter download, and field-service telemetry without adding a dedicated USB-to-UART bridge chip. The MI2C/SPI module interfaces to industrial sensors and the enhanced PWM drives solenoids and motor valves. The 16-QFN exposed pad ensures thermal performance in enclosed panel environments at +70 C ambient. The device operates across the full 2.3-5.5 V industrial supply range.
Recommended
USB LED Lighting Controllers
The PIC16F1454T-I/ML drives USB-powered architectural and accent LED lighting controllers via its dual PWM modules with complementary outputs and configurable dead-band delays. The 48 MHz core runs PID loops for color-mixing at 8 kHz refresh rates without CPU loading. The USB CDC class receives DMX-style commands from host software, while the 1 KB SRAM holds frame buffers for up to 32 RGB channels. The 16-QFN package enables embedding in standard USB-A form-factor dongles.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1454T-I/ML β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1455T-I/ML | PIC16F1459T-I/ML | PIC16F1454-E/ML | PIC16F1455-E/ML | PIC16F1459-E/ML |
|---|---|---|---|---|---|---|
| Package | 16-QFN (4x4 mm, ML) | 16-QFN (4x4 mm, ML) - same | 16-QFN (4x4 mm, ML) - same | 16-QFN (4x4 mm, ML) - same | 16-QFN (4x4 mm, ML) - same | 16-QFN (4x4 mm, ML) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Flash Memory | 14 KB | 14 KB | 28 KB | 14 KB | 14 KB | 28 KB |
| SRAM | 1 KB | 1 KB | 2 KB | 1 KB | 1 KB | 2 KB |
| USB Module | USB 2.0 FS with clock recovery | USB 2.0 FS with clock recovery | USB 2.0 FS with clock recovery | USB 2.0 FS with clock recovery | USB 2.0 FS with clock recovery | USB 2.0 FS with clock recovery |
| Operating Temperature | -40 C to +85 C (I suffix) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +125 C (E) | -40 C to +125 C (E) | -40 C to +125 C (E) |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 |
| CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
Key Differentiators
- USB with clock recovery from host eliminates external crystal (vs PIC16F1825-I/ML)
- Larger memory at same price tier for HID + vendor reports (vs PIC16F1455T-I/ML)
- Industrial temperature range option without redesign (vs PIC16F1455T-I/ML)
Design Notes
Estimated: At 48 MHz CPU throughput, 5.5 V supply, and all 12 I/O pins sourcing 25 mA simultaneously, the PIC16F1454T-I/ML can dissipate up to 0.5 W. The 16-QFN (4x4 mm) package has typical theta_JA of approximately 38 C/W on a 1-oz 4-layer JEDEC EIA/JESD51 test board. The exposed pad (pin 17, EP) MUST be soldered to a ground plane with at least 9 thermal vias to maintain junction temperature below 125 C in worst-case ambient conditions.
USB D+ (pin 15, RC6) and D- (pin 16, RC7) traces must be routed as a 90 ohm differential pair with 45 ohm single-ended impedance, matched within 150 mil (3.81 mm) length tolerance to comply with USB 2.0 Full-Speed signal-integrity specifications. Route the differential pair over a continuous ground plane with no splits, and place the 15 kohm pull-down resistor on D- within 50 mils of pin 16. Maintain at least 3W (3x trace width) spacing to other signals to minimize crosstalk.
The PIC16F1454T-I/ML's internal 3.3V USB transceiver regulator (VBUS3V3) requires both a 1 uF X7R ceramic capacitor and a 0.01 uF X7R bypass capacitor placed within 50 mils (1.27 mm) of the VBUS3V3 pin. The main VDD supply (pin 1) requires a 0.1 uF decoupling capacitor plus a bulk 1-10 uF tantalum or ceramic capacitor. For USB bus-powered applications, the total load on the VBUS3V3 regulator must not exceed 5 mA to stay within USB 2.0 inrush-current specifications.
Do not leave the MCLR pin (pin 4, RA3/MCLR/VPP) floating; always tie it to VDD through a 10 kohm pull-up resistor, or to an external reset supervisor for noisy environments. When using ICSP programming, the ICSPDAT and ICSPCLK pins (RA0 and RA1) must not have capacitors that prevent the programmer from driving the lines; use <50 pF loading. For USB battery-charger detection, the VBUS sense pin must see a stable 5 V through a 100 kohm/100 kohm divider; insufficient filtering causes false BC 1.2 handshake failures.
Compliance Information
RoHS and REACH compliance confirmed by Microchip product declaration page. The 'I' suffix denotes industrial -40C to +85C temperature grade; the 'E' suffix (PIC16F1454-E/ML) extends to -40C to +125C for enhanced thermal applications but is not AEC-Q100 automotive-qualified.
