PIC16F1454-E/ML - 8-Bit 48MHz USB MCU 14KB Flash | Microchip
MPN: PIC16F1454-E/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.66 | $16.60 |
| 100 | $1.48 | $148.00 |
| 500 | $1.32 | $660.00 |
| 1,000 | $1.18 | $1,180.00 |
PIC16F1454-E/ML Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), working memory (RAM), peripherals, and I/O into one device. The PIC16F1454 is a member of the PIC16 enhanced mid-range family, positioned in the 8-bit MCU category and built on Microchip's Harvard RISC architecture with a 14-bit instruction word. Within the broader taxonomy, it belongs to microcontroller -> 8-bit MCU -> embedded controller -> semiconductor. Its XLP™ (eXtreme Low Power) heritage means standby currents in the microamp range, important for USB bus-powered or battery-powered peripherals.
Key differentiating features include the integrated USB 2.0 full-speed module with on-chip transceiver and clock-recovery (no external crystal required for USB), a 49-instruction enhanced mid-range core with 16-level hardware stack, a high-endurance Flash (HEF) cell rated for many program/erase cycles, and a MI2C/SPI master-slave module that supports both I²C and SPI on the same peripheral pins. The 16-QFN (4x4) footprint with exposed pad gives a small board area while keeping thermal performance adequate for the device's modest power dissipation.
On the architecture side, the PIC16F1454 uses a 2-stage pipeline RISC core with single-cycle instructions (except branches), a 49-instruction set that adds C-friendly constructs to the classic PIC instruction set, and a configurable 32kHz-48MHz internal oscillator with PLL. The on-chip USB module implements the physical layer, NRZI encoding, and bit-stuffing in hardware; the developer supplies only the device-class firmware (HID, CDC, vendor-class, etc.).
Typical applications include USB-to-UART bridge dongles, USB HID input devices (keyboards, mice, custom controls), low-cost USB sensor interfaces, USB charging-cable ID circuits, and small 8-bit general-purpose logic-replacement boards. The wide 2.3V-5.5V operating range also supports industrial 24V-bus systems with simple LDO pre-regulation.
When designing with this part, ensure the exposed pad of the QFN is soldered to a sufficiently large copper pour for both thermal dissipation and ground return; the USB bus-powered design budget should account for the MCU's typical run current plus the user-load budget defined by the USB 2.0 specification (100mA low-power, 500mA high-power). For firmware development, MPLAB X IDE with the XC8 compiler and the Microchip Libraries for Applications (MLA) USB stack accelerate class-driver bring-up.
Drop-in alternatives for PIC16F1454-E/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 PIC16F1454-E/ML (same form factor and footprint) — differing in Internal Oscillator, Operating Temperature, Package, Program Memory (Flash), USB Module.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1455-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1454-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1454-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1459-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18426-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1454-E/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 enhanced mid-range 8-bit RISC |
| Instruction Set Width | 14-bit |
| Program Memory (Flash) | 14 KB (8K x 14) |
| SRAM | 1 KB |
| EEPROM (data) | 128 B (HEF high-endurance Flash) |
| Maximum CPU Clock | 48 MHz |
| Internal Oscillator | Yes, 32 kHz to 48 MHz with PLL |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| I/O Pins | 12 |
| USB Module | USB 2.0 Full-Speed with on-chip transceiver and clock recovery |
| Serial Peripherals | 1x MI2C/SPI (master I²C or SPI) |
| Timers | Multiple 8/16-bit timers (see datasheet) |
| Operating Temperature | -40 C to +125 C (industrial, -E suffix) |
| Package | 16-QFN (4x4 mm) with exposed pad (ML) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| AEC-Q100 Automotive | Not qualified (industrial grade) |
PIC16F1454-E/ML Pin Configuration
| Pin 1 | RA5 — GPIO / ICSPCLK |
| Pin 2 | RA4 — GPIO / ICSPDAT |
| Pin 3 | RA3/MCLR — GPIO or Master Clear (reset) input |
| Pin 4 | RA2 — GPIO |
| Pin 5 | RA1 — GPIO / ICSPCLK alternate |
| Pin 6 | RA0 — GPIO / ICSPDAT alternate |
| Pin 7 | VSS — Ground reference |
| Pin 8 | VDD — Positive supply 2.3V-5.5V |
| Pin 9 | RC5 — GPIO / USB D- (when USB enabled) |
| Pin 10 | RC4 — GPIO / USB D+ (when USB enabled) |
| Pin 11 | RC3 — GPIO |
| Pin 12 | RC2 — GPIO |
| Pin 13 | RC1 — GPIO / SCL (MI2C) / SCK (SPI) |
| Pin 14 | RC0 — GPIO / SDA (MI2C) / SDI (SPI) |
| Pin 15 | RB7 — GPIO / TX (EUSART) |
| Pin 16 | RB6 — GPIO / RX (EUSART) |
Typical Applications
PIC16F1454-E/ML is suitable for 6 applications: USB-to-UART Bridge Dongle, USB HID Input Device (Keyboard, Mouse, Custom Control), USB Sensor Interface / Data Logger, USB Charging Cable ID / BC1.2 Detector, Low-Pin-Count Logic Replacement / CPLD Alternative, Industrial 24V-Bus Sensor Node with USB Diagnostics.
USB-to-UART Bridge Dongle
The PIC16F1454-E/ML is a strong fit for USB-to-UART bridge dongles because its integrated USB 2.0 full-speed transceiver with on-chip clock recovery eliminates the external 48 MHz crystal typically required for USB, while the 14KB Flash holds the CDC class driver plus a small command interpreter. The 48 MHz CPU and 1KB SRAM keep latency low enough for 115200-921600 baud operation. Running from the USB 5V rail through an internal regulator, the same QFN-16 footprint supports CDC, vendor-class, and HID bridges without external USB components.
Recommended
USB HID Input Device (Keyboard, Mouse, Custom Control)
The PIC16F1454's integrated USB module and 12 GPIO make it ideal for low-cost USB HID input devices such as keyboards, mice, macro pads, and custom HID controls. The 14KB Flash accommodates the HID class driver plus application logic for matrix scanning, debouncing, and backlight control. At 48 MHz the core responds within one USB frame (1 ms), and the QFN-16 footprint fits inside compact consumer peripherals. The XLP Sleep mode keeps idle power low for battery-powered wireless HID dongles.
Recommended
USB Sensor Interface / Data Logger
The PIC16F1454-E/ML works well as a USB sensor interface or data logger, reading an analog or digital sensor over its MI2C/SPI peripheral and presenting the data to a PC over USB CDC or vendor-class. The 14KB Flash fits the USB stack plus sensor-handling firmware, while 128 bytes of HEF data Flash stores calibration constants. The 2.3-5.5V VDD range lets the part tolerate USB-supplied 5V rails and 3.3V sensor I/O without level shifters in most cases.
Recommended
USB Charging Cable ID / BC1.2 Detector
For USB charging-cable identification and BC1.2 legacy-charger detection circuits, the PIC16F1454-E/ML offers just enough GPIO and code space to implement a USB-IF compliant ID pin or proprietary charger-handshake protocol. The integrated USB transceiver simplifies the analog front end, and the QFN-16 package fits inside the connector shell. The -E extended temperature grade supports automotive cabin and outdoor charging applications.
Recommended
Low-Pin-Count Logic Replacement / CPLD Alternative
With 12 I/O, 14KB Flash and a 48 MHz core, the PIC16F1454-E/ML can replace small CPLDs or discrete logic in glue-logic, button-handling, and protocol-bridging applications. The QFN-16 (4x4) footprint is comparable to a TSSOP-16, but the part adds firmware flexibility, an MI2C/SPI master, and a USB interface in a single device. Programming via ICSP keeps the BOM small in low-volume industrial control panels.
Recommended
Industrial 24V-Bus Sensor Node with USB Diagnostics
The wide 2.3-5.5V VDD range and industrial -40 to +125 C temperature grade make the PIC16F1454-E/ML suitable for industrial sensor nodes on 24V systems, where a simple LDO steps the bus down to 5V or 3.3V. The integrated USB allows factory diagnostics, firmware updates over USB, and field-log retrieval without an external programmer. The exposed pad of the QFN-16 dissipates the modest heat of the 48 MHz core across a ground pour.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1454-E/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1455-E/ML | PIC16F1454-I/ML | PIC16LF1454-I/ML | PIC16F1459-E/ML | PIC16F18426-E/ML |
|---|---|---|---|---|---|---|
| Package | 16-QFN (4x4) | 16-QFN (4x4) - same | 16-QFN (4x4) - same | 16-QFN (4x4) - same | 20-QFN - larger | 16-QFN (4x4) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 14 KB | 28 KB | 14 KB | 14 KB | 28 KB | 28 KB |
| SRAM | 1 KB | 2 KB | 1 KB | 1 KB | 2 KB | 2 KB |
| Max CPU Clock | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 32 MHz |
| USB Module | USB 2.0 FS + clock recovery | USB 2.0 FS + clock recovery | USB 2.0 FS + clock recovery | USB 2.0 FS + clock recovery | USB 2.0 FS + clock recovery | USB 2.0 FS + clock recovery |
| Operating Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| Operating Temperature | -40 C to +125 C (E grade) | -40 C to +125 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C | -40 C to +125 C |
| I/O Pins | 12 | 12 | 12 | 12 | 18 | 12 |
Key Differentiators
- Integrated USB 2.0 full-speed transceiver with on-chip clock recovery (vs PIC16F1454-E/ML vs PIC16F18426-E/ML)
- Smaller Flash footprint than PIC16F1455 (vs PIC16F1455-E/ML)
- Higher temperature grade than -I variant (vs PIC16F1454-I/ML)
Design Notes
The PIC16F1454-E/ML in a 16-QFN (4x4) package dissipates only a few hundred milliwatts even at 48 MHz full USB load, but the exposed thermal pad MUST be soldered to a copper pour on the PCB to keep the junction temperature within the -40 C to +125 C operating range. Use at least 100 mm² of 1 oz copper tied to ground on the top or inner layer for adequate thermal spreading; without it, the QFN may overheat in sealed enclosures above 70 C ambient.
Route the USB D+ and D- lines as a 90 ohm differential pair with matched length to within 150 mil, keep them away from switching signals, and place the VBUS bulk capacitor within 5 mm of the VDD pin. The internal USB transceiver eliminates the need for external series resistors on D+/D- but a common-mode choke and ESD protection diode (e.g., USBLC6-2SC6) are strongly recommended for production boards to pass IEC 61000-4-2 air-discharge testing.
Three common pitfalls to avoid: (1) Do not skip the 0.1 uF decoupling capacitor on VDD - place it within 3 mm of the pin; (2) Do not leave MCLR floating - tie it to VDD through a 10 kohm resistor or configure it as a digital input to avoid spurious resets; (3) Do not program the configuration bits for an external crystal when using the internal 48 MHz USB clock, or the USB module will not enumerate. The Microchip PIC16F1454 datasheet configuration-word section lists the correct settings for USB with the internal oscillator.
Compliance Information
RoHS compliant per Microchip product page. -E suffix indicates -40 to +125 C industrial extended temperature grade; not AEC-Q100 qualified. For automotive AEC-Q100 needs, choose a PIC16F1xxx part with explicit Q100 suffix.
