PIC16F1454T-I/JQ - 8-bit USB MCU 14KB Flash 48MHz | Microchip
MPN: PIC16F1454T-I/JQ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.79 | $1.79 |
| 10 | $1.61 | $16.10 |
| 100 | $1.34 | $134.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.05 | $1,050.00 |
PIC16F1454T-I/JQ Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), non-volatile storage (EEPROM), and a rich set of peripherals (timers, ADC, communication interfaces, I/O). The PIC16F1454 belongs to the broader class of 8-bit microcontrollers, sitting hierarchically between 4-bit legacy controllers and 32-bit Cortex-M application processors. Within Microchip's portfolio it descends from PIC16 -> PIC16F1xx enhanced mid-range -> PIC16F145x USB sub-family. The on-chip USB 2.0 full-speed module with clock recovery from host removes the need for an external crystal in most USB applications, an unusual capability for this flash/footprint class.
Key features include 14 KB Flash, 512 B SRAM, 128 B of non-volatile data EEPROM (HEF/Hef Flash), a 10-bit ADC with up to 9 channels, two 8-bit timers plus one 16-bit timer, an Enhanced Universal Synchronous/Asynchronous Receiver Transmitter (EUSART), Master I2C and SPI (MSSP), and the aforementioned USB 2.0 FS device with internal oscillator trimming. The enhanced mid-range core delivers 49 instructions with 16 stack levels, supporting C-optimized MPLAB X IDE and XC8 compiler workflows. The device supports 1.8 V to 5.5 V operation, with XLP eXtreme Low-Power features for battery-backed designs.
Typical applications include USB HID peripherals (keyboards, mice, custom input devices), USB CDC virtual COM ports, low-cost USB-to-UART bridges, PC accessories, point-of-sale terminals, LED lighting controllers, and any low-pin-count embedded node requiring USB connectivity without external crystal. The 16-UQFN package suits space-constrained designs where a 4x4 mm footprint is acceptable.
When designing with this device, pay attention to VUSB 3.3 V regulation - the internal USB transceiver needs a clean 3.3 V rail supplied either externally or via the internal 3.3 V regulator. Decouple VDD with 100 nF plus bulk capacitance within 3 mm of the pin and tie the exposed pad to GND for thermal/return continuity.
This page synthesizes distributor pricing across DigiKey, Mouser, and LCSC, drops-in alternatives from the same PIC16F1454 family, and practical design notes not found in the manufacturer datasheet, providing an information-gain summary for USB-capable 8-bit MCU selection.
Drop-in alternatives for PIC16F1454T-I/JQ 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/JQ (same form factor and footprint) β differing in Operating Temperature, USB Module, Instruction Set, Non-volatile Data Storage (HEF), ADC.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16F1454-I/JQ
β Drop-Inπ Reference alternative (not in catalog)
PIC16F1454T-E/JQ
β Drop-Inπ Reference alternative (not in catalog)
PIC16F1455T-I/JQ
β Drop-Inβ In Stock
$1.32 / Unit
View Datasheet βPIC16F1454T-I/ML
β Drop-Inβ In Stock
$1.18 / Unit
View Datasheet βPIC16F1454T-I/JQ Maximum Ratings & Electrical Characteristics
| Core | PIC16 Enhanced Mid-Range 8-bit RISC |
| Instruction Set | 49 instructions, 16 stack levels |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| SRAM | 512 B |
| Non-volatile Data Storage (HEF) | 128 B |
| Maximum CPU Frequency | 48 MHz |
| Internal Oscillator | 48 MHz (USB-precise, clock-recovery from host) |
| Operating Voltage Range | 2.3 V to 5.5 V (Full-Feature); 1.8 V to 5.5 V (see datasheet) |
| USB Module | USB 2.0 Full-Speed Device with clock recovery from USB host |
| I/O Pins | 11 (varies by package; up to 12 per datasheet) |
| ADC | 10-bit, up to 9 channels |
| Timers | 2 x 8-bit, 1 x 16-bit |
| Communication | EUSART, MSSP (I2C/SPI), USB 2.0 FS |
| Operating Temperature | -40C to +85C (Industrial, "I") |
| Package | 16-UQFN (4x4 mm) with exposed pad |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16F1454T-I/JQ Pin Configuration
| Pin 1 | VDD β Positive supply voltage |
| Pin 2 | RA5 β Bidirectional I/O pin / ICSPDAT programming data |
| Pin 3 | RA4 β Bidirectional I/O pin / I2C SCL |
| Pin 4 | RA3 β Bidirectional I/O pin / MCLR (Reset, active low) |
| Pin 5 | RC5 β Bidirectional I/O pin / I2C SDA |
| Pin 6 | RC4 β Bidirectional I/O pin |
| Pin 7 | RC3 β Bidirectional I/O pin / AN7 |
| Pin 8 | RC2 β Bidirectional I/O pin / AN6 |
| Pin 9 | RC1 β Bidirectional I/O pin / AN5 / ICSPCLK programming clock |
| Pin 10 | RC0 β Bidirectional I/O pin / AN4 |
| Pin 11 | RA1 β Bidirectional I/O pin / AN1 / VREF+ reference |
| Pin 12 | RA0 β Bidirectional I/O pin / AN0 |
| Pin 13 | VSS β Ground reference |
| Pin 14 | RA2 β Bidirectional I/O pin / AN2 / DAC reference |
| Pin 15 | D- β USB data minus (full-speed differential pair) |
| Pin 16 | D+ β USB data plus (full-speed differential pair) |
| Pin EP | Exposed Pad β Thermal/ground pad - must be soldered to PCB ground plane |
Typical Applications
PIC16F1454T-I/JQ is suitable for 6 applications: USB HID Peripheral (Keyboard/Mouse/Custom Input), USB CDC Virtual COM Port / Bridge, USB Point-of-Sale (POS) Terminal Accessory, USB LED Lighting Controller / DMX Interface, USB Battery Charging Controller (BC1.2) / Power Bank, USB-Connected Sensor Node / IoT Edge Device.
USB HID Peripheral (Keyboard/Mouse/Custom Input)
The PIC16F1454T-I/JQ is purpose-built for USB Human Interface Devices. The on-chip USB 2.0 full-speed device with host clock recovery removes the external crystal typically required for USB, reducing BOM cost and PCB area. Its 14 KB Flash comfortably accommodates Microchip's USB HID stack plus key-scanning or sensor-processing firmware, while the 16-UQFN 4x4 mm package fits inside compact keyboards, mice, presentation clickers, and custom HID input devices. The 48 MHz internal oscillator with on-the-fly trimming against USB Start-of-Frame tokens maintains timing accuracy across -40C to +85C, and 11 usable I/O pins are sufficient for matrix-scanned key arrays of up to 11xN.
Recommended
USB CDC Virtual COM Port / Bridge
The PIC16F1454T-I/JQ excels at USB Communications Device Class (CDC) implementations, presenting itself to a host PC as a virtual COM port without external USB PHY or crystal. The integrated USB 2.0 FS module with clock recovery from the host streamlines CDC ACM firmware, while the EUSART provides a hardware UART for bridging to legacy RS-232 or RS-485 devices. With 14 KB Flash, the part can host the full Microchip CDC stack plus user-defined protocol glue. Typical use cases include factory-floor diagnostic bridges, USB-to-UART converter dongles, and embedded service ports.
Recommended
USB Point-of-Sale (POS) Terminal Accessory
In retail point-of-sale terminals, the PIC16F1454T-I/JQ serves as the USB interface controller for barcode scanners, mag-stripe readers, customer-facing displays, and cash-drawer kickers. Its USB 2.0 FS module with on-chip PHY eliminates the need for external bridge chips, and 512 B SRAM with 14 KB Flash is sufficient for HID POS class firmware or vendor-specific drivers. The industrial -40C to +85C temperature range handles indoor retail environments, and the small 16-UQFN 4x4 mm package suits space-constrained accessory enclosures.
Recommended
USB LED Lighting Controller / DMX Interface
Architectural and entertainment LED lighting controllers often use the PIC16F1454T-I/JQ as a USB-to-DMX bridge or as a small standalone DMX node. The 48 MHz core runs the DMX512 timing-critical receive/transmit routines with comfortable margin, while the USB interface accepts lighting control commands from PC-based consoles. The 10-bit ADC with up to 9 channels supports current monitoring and temperature feedback for LED drivers, and PWM plus timers drive high-side FETs for dimming. The 16-UQFN 4x4 mm footprint fits inside inline LED strip controllers.
Recommended
USB Battery Charging Controller (BC1.2) / Power Bank
USB Battery Charging Specification (BC1.2) controllers in power banks and charging cradles use the PIC16F1454T-I/JQ to enumerate attached devices and switch charging profiles. The MCU monitors VBUS via the ADC, drives status LEDs via PWM, and negotiates current limits through USB protocol handshakes using the on-chip USB 2.0 FS device. With eXtreme Low Power (XLP) sleep currents and a 2.3 V to 5.5 V supply range, the part is well-suited to battery-backed charging applications where standby draw matters.
Recommended
USB-Connected Sensor Node / IoT Edge Device
The PIC16F1454T-I/JQ fits as the controller in USB-connected sensor nodes for industrial monitoring, environmental sensing, and lab instrumentation. Its 10-bit ADC with up to 9 channels reads multiple analog sensors simultaneously, while the USB interface streams real-time data to a host PC for logging or visualization. The MSSP peripheral supports I2C/SPI sensors (temperature, humidity, accelerometers), and 11 I/O pins accommodate discrete signals. The 14 KB Flash hosts USB class firmware plus sensor-processing routines in C under MPLAB XC8.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1454T-I/JQ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1454-I/JQ | PIC16F1454T-E/JQ | PIC16F1455T-I/JQ | PIC16F1454T-I/ML | PIC16F1454-E/P |
|---|---|---|---|---|---|---|
| Package | 16-UQFN (4x4 mm) | 16-UQFN (4x4 mm) | 16-UQFN (4x4 mm) | 16-UQFN (4x4 mm) | QFN (4x4 mm) variant | PDIP-14 (not drop-in for JQ footprint) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 14 KB (8K x 14) | 14 KB | 14 KB | 16 KB (+14%) | 14 KB | 14 KB |
| SRAM | 512 B | 512 B | 512 B | 1 KB (+100%) | 512 B | 512 B |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C | -40C to +125C (Extended) |
| USB 2.0 FS | Yes (with clock recovery) | Yes (with clock recovery) | Yes (with clock recovery) | Yes (with clock recovery) | Yes (with clock recovery) | Yes (with clock recovery) |
| Maximum Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Packing Option | Tape & Reel ("T-" suffix) | Tube (non-T&R) | Tape & Reel | Tape & Reel | Tape & Reel (ML package) | Tube (DIP) |
| Qty-1 Price (USD, as of 2026-09-19) | 1.79 | Similar (no T&R premium) | Slight premium for extended temp grade | Slight premium for larger Flash | Similar (T&R ML package) | Similar (DIP package) |
Key Differentiators
- On-chip USB 2.0 FS device with host clock recovery (vs PIC16F1454-E/P)
- Industrial vs Extended temperature grade availability (vs PIC16F1454T-E/JQ)
- 16 KB Flash upgrade available in same footprint (vs PIC16F1455T-I/JQ)
Design Notes
The PIC16F1454T-I/JQ operates from 2.3 V to 5.5 V (industrial temperature, full-feature range). Decouple VDD with a 100 nF ceramic capacitor placed within 3 mm of the pin, plus a 4.7-10 uF bulk capacitor for transient load handling. If the internal 3.3 V USB regulator is used to supply the USB transceiver (VUSB pin), add a 220 nF decoupling capacitor at VUSB. Avoid using VUSB as a general 3.3 V supply for external loads - it is sized only for the internal USB transceiver. Estimated: at 48 MHz CPU active and USB active, typical IDD is around 8-10 mA per the family datasheet figure; for exact current, measure on a representative board.
Solder the exposed pad (EP) of the 16-UQFN package to a continuous PCB ground plane - this provides the primary thermal dissipation path and a low-impedance return for the high-speed USB differential pair. Route the D+/D- lines as a matched-length, 90-ohm differential pair with controlled impedance. Place the USB series termination resistors (typically 27-33 ohms) close to the MCU pins if needed for signal integrity. Keep digital switching traces away from the analog ADC inputs, and place a ground guard ring around sensitive analog traces.
Common pitfalls when designing with the PIC16F1454T-I/JQ include: (1) forgetting to configure the CONFIG words to enable the internal oscillator and disable the external clock mode; (2) not connecting MCLR (RA3) properly - if unused, tie to VDD through a 10 kohm pull-up, do not leave floating; (3) omitting the 100 nF VDD decoupling cap, which can cause USB enumeration failures; (4) using VUSB as a 3.3 V source for external circuitry (it is for the USB transceiver only); (5) routing USB D+/D- as single-ended traces instead of a 90-ohm differential pair; (6) failing to solder the EP pad which causes thermal shutdown and erratic operation.
The PIC16F1454T-I/JQ USB Full-Speed interface uses internal termination and clock recovery, but PCB layout still matters. Keep D+ and D+ matched within 0.5 mm length difference, avoid 90-degree bends, and place no other signals within 2 mm of the differential pair. Place a ferrite bead or small inductor on VBUS if the design is bus-powered, to limit conducted noise. The internal 48 MHz oscillator provides adequate USB Full-Speed timing accuracy across voltage and temperature thanks to host clock recovery, so an external crystal is generally unnecessary for USB-only designs.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified; for automotive applications consider PIC16F1454T-E/JQ (Extended temp grade) or Microchip automotive-grade PIC16F1xxx AEC-Q100 variants. Lead-free package.
