PIC16LF1455T-I/JQ - 8-bit MCU 14KB Flash USB 2.0 16-UQFN | Microchip
MPN: PIC16LF1455T-I/JQ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.86 | $1.86 |
| 10 | $1.71 | $17.10 |
| 100 | $1.45 | $145.00 |
| 500 | $1.23 | $615.00 |
| 1,000 | $1.05 | $1,050.00 |
PIC16LF1455T-I/JQ Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), and peripheral interfaces on one IC. The 8-bit MCU category occupies the low-power, low-cost end of the embedded hierarchy: 8-bit core -> PIC mid-range -> PIC16 family -> XLP ultra-low-power sub-family. The XLP designation denotes extended sleep-mode current performance, typically tens of nA, enabling years of operation from a coin cell.
Key features include 49 instructions with 16 hardware stack levels, an internal 48 MHz oscillator, two 8-bit timers plus one 16-bit timer, a 10-bit ADC with up to 9 channels, and 11 capacitive-touch-capable I/O pins. The USB 2.0 module supports HID, CDC and custom classes and integrates the 3.3V internal regulator and pull-up resistors. Master Clear Reset, In-Circuit Serial Programming (ICSP) and an on-chip debug interface (ICD) are standard. Operating voltage spans 2.3V to 5.5V (F version) suitable for both 3.3V USB and 5V-logic systems.
The architecture combines a single-cycle hardware multiplier with a 14-bit instruction word and a 16-level hardware stack, allowing deterministic interrupt latency in real-time USB polling loops. The USB engine handles SOF token tracking and resume signalling in hardware, leaving the core free for application code. The XLP nanoWatt XLP technology provides Sleep currents in the sub-100 nA range, with multiple wake-up sources including USB resume, watchdog and RTCC.
Typical applications include USB HID peripherals (keyboards, mice, custom joysticks), USB-to-UART bridges using CDC class, low-cost capacitive-touch user interfaces, sensor nodes with USB diagnostic ports, and consumer accessories such as LED controllers or programmable key fobs. Designers should bias the application layer around deterministic interrupt timing and exploit the integrated USB features to avoid external components.
Design tip: place the VBUS sense divider and D+/D- series resistors within 5 mm of the MCU, keep the USB DP/DM traces length-matched and impedance-controlled to 90 ohm differential, and add a 1 uF + 100 nF decoupling pair adjacent to the VDD and VUSB pins.
This page consolidates verified distributor pricing, parametric drop-in alternatives and practical USB-layout design notes beyond what the manufacturer datasheet alone supplies.
Drop-in alternatives for PIC16LF1455T-I/JQ — 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 PIC16LF1455T-I/JQ (same form factor and footprint) — differing in ADC, Operating Temperature, Package, USB Module.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1455-I/JQ
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1455T-I/JQ
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16LF1454T-I/JQ
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16LF1455-E/JQ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.78 / Unit
View Datasheet →PIC16LF1455T-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16F1455T-I/JQ
✅ Drop-In✓ In Stock
$1.32 / Unit
View Datasheet →PIC16LF1455T-I/JQ Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC enhanced mid-range 8-bit |
| Core Series | PIC® XLP™ 16F |
| Instruction Set Width | 14-bit, 49 instructions |
| Max CPU Frequency | 48 MHz |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| SRAM | 1024 bytes |
| High Endurance Flash (HEF) | 128 bytes |
| Hardware Stack Levels | 16 |
| USB Module | USB 2.0 Full-Speed with clock recovery from host |
| Operating Voltage Range | 2.3 V to 5.5 V |
| I/O Pins | 11 (capacitive-touch capable) |
| ADC | 10-bit, up to 9 channels |
| Timers | 2 x 8-bit + 1 x 16-bit |
| Package | 16-UQFN (4x4 mm) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| ICSP / ICD | Supported (In-Circuit Serial Programming + On-chip Debug) |
PIC16LF1455T-I/JQ Pin Configuration
| Pin 1 | RA0/ICSPDAT — Bidirectional I/O / ICSP data (also RB6 alternate) |
| Pin 2 | RA1/ICSPCLK — Bidirectional I/O / ICSP clock (also RB7 alternate) |
| Pin 3 | RA2 — Bidirectional I/O / analog input AN2 |
| Pin 4 | RA3/MCLR — Master Clear reset input (active low) / RA3 |
| Pin 5 | RA4 — Bidirectional I/O / analog input AN4 / SOSC input |
| Pin 6 | RA5 — Bidirectional I/O / analog input AN5 |
| Pin 7 | VSS — Ground reference |
| Pin 8 | D+ — USB Full-Speed data plus (with internal pull-up) |
| Pin 9 | D- — USB Full-Speed data minus |
| Pin 10 | VBUS — USB VBUS sense input (5 V tolerant) |
| Pin 11 | VUSB — Internal 3.3V USB regulator output (decouple 1 uF + 100 nF) |
| Pin 12 | RC0 — Bidirectional I/O / analog input AN8 |
| Pin 13 | RC1 — Bidirectional I/O / analog input AN9 |
| Pin 14 | RC2 — Bidirectional I/O |
| Pin 15 | RC3 — Bidirectional I/O |
| Pin 16 | VDD — Positive supply 2.3 V to 5.5 V (decouple 1 uF + 100 nF) |
Typical Applications
PIC16LF1455T-I/JQ is suitable for 6 applications: USB HID Peripheral (Mouse, Keyboard, Custom HID), USB-to-UART CDC Bridge, Capacitive Touch User Interface, USB Sensor Pod / Diagnostic Dongle, Programmable LED Controller / Lighting Accessory, Low-Cost Consumer Accessory / Custom Joystick.
USB HID Peripheral (Mouse, Keyboard, Custom HID)
The PIC16LF1455T-I/JQ is purpose-built for USB Human Interface Devices. Its on-chip USB 2.0 Full-Speed transceiver with clock recovery from the USB host removes the external 12/48 MHz crystal BOM, while the integrated 3.3V LDO and pull-up resistors complete the bus interface in zero external components. The 14 KB Flash comfortably fits HID report descriptors plus state machine code, and the XLP sub-100 nA Sleep current lets bus-powered accessories meet USB suspend current (<= 2.5 mA device side budget) without aggressive clock gating. Designers should treat the 1ms USB frame tick as the deterministic interrupt source and let the hardware engine service SOF tokens, leaving the core free for HID report generation.
Recommended
USB-to-UART CDC Bridge
Implementing a CDC virtual COM port is the lowest-effort USB path on the PIC16LF1455T-I/JQ: the device enumerates as a serial class and exposes the on-chip EUSART as a UART bridge without any host driver. The 48 MHz core sustains 12 MIPS, which is sufficient to software-FIFO multi-Mbps baud rates while leaving margin for command parsing. The XLP Sleep mode enables bus-suspend/remote-wake behaviour required by the USB 2.0 specification. Designers should pay attention to line-coding change requests and ensure the CDC ACM state machine handles SET_LINE_CODING within one USB frame to avoid host timeouts.
Recommended
Capacitive Touch User Interface
All 11 I/O pins of the PIC16LF1455T-I/JQ support the mTouch capacitive-touch peripheral, allowing a small slider or button matrix to be implemented with no extra silicon. The 10-bit ADC and CTMU charge-time measurement unit both serve for proximity and water-tolerant touch sensing. The XLP Sleep current keeps battery-powered remotes alive for years, waking only on a touch event. Ground the PCB hatch carefully and provide a guard ring around the touch electrodes to avoid false triggers from USB cable movement.
Recommended
USB Sensor Pod / Diagnostic Dongle
A USB sensor pod uses the PIC16LF145T-I/JQ's USB CDC channel to stream ADC samples from the on-chip 10-bit ADC into a host PC at up to 1 kSps. With 1024 B of SRAM the device can buffer a full millisecond of 8-channel ADC data before each USB IN transfer, smoothing host-side scheduling jitter. The XLP Sleep mode allows the pod to enter a sub-100 nA standby between host polls. Use the internal voltage reference for ratiometric measurements to avoid external reference drift, and expose calibration constants over a vendor-specific USB control request.
Recommended
Programmable LED Controller / Lighting Accessory
Addressable LED strings (WS2812B, SK6812) require precise bit timing that the PIC16LF1455T-I/JQ delivers via the Configurable Logic Cell (CLC) and PWM peripherals running at 48 MHz. USB CDC allows host-side colour and animation control, while the XLP Sleep current keeps mains-powered fixtures within their standby budget. Designers can use the 16-bit timer to drive a T0H/T1H waveform at 800 kHz with margin, and route PWM to MOSFET gate drivers through the CLC for hardware timing safety nets.
Recommended
Low-Cost Consumer Accessory / Custom Joystick
Custom USB joysticks, game controllers and macro pads are an ideal target for the PIC16LF1455T-I/JQ: 11 I/O pins cover an 8-button + 2-axis joystick matrix, the integrated USB Full-Speed handles HID gamepad class natively, and the 4x4 mm UQFN footprint fits inside a 3D-printed enclosure. The XLP Sleep mode satisfies battery-powered accessory standby regulations and the on-chip capacitive-touch channels can replace mechanical buttons for a sealed industrial design. Keep the D+/D- pair length-matched to within 1 mm and place the 27 ohm series resistors within 5 mm of the MCU pins.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1455T-I/JQ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1455-I/JQ | PIC16LF1454T-I/JQ | PIC16LF1455-E/JQ | PIC16LF1455T-I/ML | PIC16F1455T-I/JQ |
|---|---|---|---|---|---|---|
| Package | 16-UQFN (4x4 mm) | 16-UQFN (4x4 mm) - same | 16-UQFN (4x4 mm) - same | 16-UQFN (4x4 mm) - same | 16-QFN (4x4 mm) - same footprint family | 16-UQFN (4x4 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | 8-bit PIC enhanced mid-range, 48 MHz | 8-bit PIC enhanced mid-range, 48 MHz | 8-bit PIC enhanced mid-range, 48 MHz (no USB) | 8-bit PIC enhanced mid-range, 48 MHz | 8-bit PIC enhanced mid-range, 48 MHz | 8-bit PIC enhanced mid-range, 48 MHz |
| Program Flash | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB |
| SRAM | 1024 B | 1024 B | 1024 B | 1024 B | 1024 B | 1024 B |
| USB Module | USB 2.0 Full-Speed | USB 2.0 Full-Speed | No USB | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed |
| Operating Voltage | 2.3 V to 5.5 V (XLP) | 2.3 V to 5.5 V (XLP) | 2.3 V to 5.5 V (XLP) | 2.3 V to 5.5 V (XLP) | 2.3 V to 5.5 V (XLP) | 1.8 V to 5.5 V (non-L, higher sleep) |
| Temperature Grade | Industrial (-40 C to +85 C) | Industrial (-40 C to +85 C) | Industrial (-40 C to +85 C) | Extended (-40 C to +125 C) | Industrial (-40 C to +85 C) | Industrial (-40 C to +85 C) |
Key Differentiators
- Integrated USB 2.0 with clock recovery from host (vs PIC16LF1454T-I/JQ)
- XLP nanoWatt Sleep current below 100 nA (vs PIC16F1455T-I/JQ)
- Compact 4x4 mm UQFN package with exposed thermal pad (vs PIC16LF1455-I/SL)
Design Notes
Place the 27 ohm D+/D- series resistors within 5 mm of the MCU pins and length-match the differential pair to within 1 mm. Route DP/DM on the top layer over a continuous ground plane and maintain 90 ohm differential impedance for USB Full-Speed signalling. Decouple VUSB with 1 uF + 100 nF placed within 3 mm of the pin to suppress the 480 MHz harmonics from the internal regulator.
Bulk-decouple VDD with 1 uF + 100 nF adjacent to the package, and keep the VDD trace wide enough to carry the in-rush during USB bus reset. Estimated peak in-rush from a 100 mA USB attach is approximately 50 mA per ms; a 1 uF X7R will hold VDD above 2.3 V during this transient. For battery-powered designs the XLP Sleep mode drops VDD current below 100 nA, but watch the BOD threshold on slow VDD ramps.
Do not omit the VBUS sense divider on USB designs that must detect attachment - the internal pull-up on D+ only enables enumeration but cannot detect host presence without VBUS sampling. Also avoid routing RA4 as an output driving > 2 mA without a buffer, since RA4 is an open-drain pin. Always enable the internal HFINTOSC USB-tuning algorithm (ACTIVE_CLOCK_USB tune) to keep the 48 MHz within +/-0.25% across the -40 to +85 C industrial range.
Provide a continuous ground plane under the UQFN exposed pad and stitch vias around the perimeter. The 4x4 mm UQFN thermal pad must be soldered to a copper pour of at least 10 mm^2 to keep the junction temperature below 90 C at the worst-case 30 mA USB-active load. Estimated thermal rise with 10 mm^2 1-oz copper pour is approximately 35 C above ambient.
Compliance Information
RoHS and lead-free per Microchip product page. Halogen-free status not explicitly listed - set to unknown per Data Authenticity Rules. AEC-Q100 is not applicable for non-automotive MCU; this part is not AEC-Q100 qualified.
