PIC16F1455-I/JQ - 14KB Flash USB MCU 48MHz | Microchip
MPN: PIC16F1455-I/JQ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.96 | $1.96 |
| 10 | $1.78 | $17.80 |
| 100 | $1.59 | $159.00 |
| 500 | $1.42 | $710.00 |
| 1,000 | $1.27 | $1,270.00 |
PIC16F1455-I/JQ Overview
A microcontroller (MCU) is a single-chip computer containing a CPU, Flash program memory, SRAM data memory, EEPROM, and a rich set of peripherals such as timers, ADC, communication interfaces, and I/O ports. PIC microcontrollers use a modified Harvard RISC architecture that executes one instruction per clock cycle (except branches), enabling deterministic timing and high code efficiency. The PIC16F1455 sits at the intersection of mainstream 8-bit PIC MCUs and USB-enabled devices, making it a popular choice for low-cost USB peripherals, HID-class devices, and embedded sensors. Within Microchip's taxonomy, the PIC16F1455 belongs to the enhanced mid-range PIC16F1xxx family, which extends the classic PIC16F baseline with linear program memory and more peripherals.
Key features include 14KB (8K x 14) self-programmable Flash with 128 bytes of non-volatile data storage, 1KB RAM, 8 general-purpose I/O pins, an integrated 48MHz precision internal oscillator, an on-chip USB 2.0 full-speed module with clock recovery from host, two standalone 10-bit PWM modules, a 10-bit ADC with up to 8 channels, and an operating voltage range of 2.3V to 5.5V (industrial temperature range -40C to +85C). The UQFN-16 (4x4 mm) package with exposed thermal pad supports very compact PCB designs and provides excellent thermal performance for the small package footprint.
The USB module includes a dedicated 3.3V internal regulator and on-chip transceiver, eliminating the need for external crystals for low-speed and full-speed USB. Combined with the 48MHz internal oscillator and a peripheral pin select (PPS) system, the PIC16F1455 reduces BOM cost for USB HID, CDC, and custom-class devices. The HEF Flash supports 100K erase/write cycles, suitable for data logging and parameter storage.
Typical applications include USB HID peripherals (keyboards, mice, custom input devices), USB-to-UART bridges, LED lighting controllers, low-power sensor nodes, consumer electronics with USB charging monitoring, and industrial control panels requiring USB diagnostics. The XLP feature set enables sleep currents below 1 uA, making the part attractive for battery-powered devices.
When designing with this part, place a 0.1 uF decoupling capacitor as close as possible to the VDD pin and connect the exposed thermal pad to the ground plane for thermal and electrical performance. The USB D+/D- traces should be routed as a 90-ohm differential pair and kept as short as possible. For bus-powered designs, the internal 3.3V regulator can supply up to ~50 mA to external circuitry, but verify against USB inrush current limits.
This page synthesizes distributor pricing, drop-in alternatives within the PIC16F1xxx family, USB design notes, and practical engineering guidance that goes beyond what the manufacturer datasheet alone provides.
Drop-in alternatives for PIC16F1455-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 PIC16F1455-I/JQ (same form factor and footprint) β differing in ADC, I/O Pins, Internal Oscillator, MSL Level, Package.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16F1455-E/JQ
β Drop-Inπ Reference alternative (not in catalog)
PIC16F1455T-I/JQ
β Drop-Inβ In Stock
$1.32 / Unit
View Datasheet βPIC16F1455-I/ML
β Drop-Inβ In Stock
$1.55 / Unit
View Datasheet βPIC16F1454-I/JQ
β Drop-Inπ Reference alternative (not in catalog)
PIC16LF1455-I/JQ
β Drop-Inπ Reference alternative (not in catalog)
PIC16F1459-I/JQ
β Drop-Inπ Reference alternative (not in catalog)
PIC16F1455-I/JQ Maximum Ratings & Electrical Characteristics
| Architecture | PIC16 enhanced mid-range 8-bit RISC |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data Memory (RAM) | 1 KB |
| Non-volatile Data Storage | 128 B (HEF) |
| CPU Speed | 48 MHz (max) |
| Instruction Set | 49 instructions, 16 stack levels |
| I/O Pins | 8 |
| Operating Voltage | 2.3 V to 5.5 V |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Internal Oscillator | 48 MHz precision |
| USB Module | USB 2.0 Full-Speed with clock recovery |
| ADC | 10-bit, up to 8 channels |
| PWM | 2x 10-bit standalone PWM |
| Timers | 3x 8-bit, 2x 16-bit |
| Package | 16-pin UQFN (4x4 mm) with exposed pad |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC16F1455-I/JQ Pin Configuration
| Pin 1 | VDD β Positive supply voltage (2.3V to 5.5V) |
| Pin 2 | RA5 β GPIO / digital I/O (also ICSPCLK) |
| Pin 3 | RA4 β GPIO / digital I/O |
| Pin 4 | RA3 β GPIO / digital I/O (also MCLR) |
| Pin 5 | RC5 β GPIO / digital I/O |
| Pin 6 | RC4 β GPIO / digital I/O |
| Pin 7 | RC3 β GPIO / digital I/O |
| Pin 8 | RC2 β GPIO / digital I/O |
| Pin 9 | RC1 β GPIO / digital I/O |
| Pin 10 | RC0 β GPIO / digital I/O |
| Pin 11 | VSS β Ground reference |
| Pin 12 | D+ β USB D+ differential data line |
| Pin 13 | D- β USB D- differential data line |
| Pin 14 | RA1 β GPIO / digital I/O |
| Pin 15 | RA0 β GPIO / digital I/O |
| Pin 16 | RA2 β GPIO / digital I/O |
Typical Applications
PIC16F1455-I/JQ is suitable for 7 applications: USB HID Peripherals, USB-to-UART Bridge, Low-Power Sensor Node, LED Lighting Controller, USB Charging Monitor, Consumer USB Dongle, Industrial USB Diagnostics Tool.
USB HID Peripherals
The PIC16F1455-I/JQ is purpose-built for USB Human Interface Device (HID) class peripherals such as keyboards, mice, custom input controllers, and game controllers. Its integrated USB 2.0 Full-Speed transceiver with clock recovery eliminates the external crystal normally required for USB, while the 48 MHz internal oscillator provides the precise timing needed for 12 Mbps signaling. With 14 KB Flash, 1 KB RAM, and 8 I/O pins, the part fits a typical HID descriptor, report buffer, and scan matrix in a compact UQFN-16 (4x4 mm) footprint, making it ideal for space-constrained USB input devices where BOM cost and PCB area matter.
Recommended
USB-to-UART Bridge
The PIC16F1455-I/JQ implements a low-cost USB-to-UART (CDC class) bridge that emulates an RS-232 COM port over USB. The integrated USB module handles enumeration and bulk transfers, while the EUSART peripheral provides the asynchronous serial interface. At 48 MHz the part delivers more than enough throughput for 115200 bps and even higher baud rates. The 1 KB RAM and 14 KB Flash hold Microchip's USB CDC stack plus application-level buffering, and the UQFN-16 footprint fits inside small USB dongles, debug adapters, and field-service tools that previously required an FTDI chip.
Recommended
Low-Power Sensor Node
The PIC16F1455-I/JQ's XLP (eXtreme Low Power) architecture enables sleep currents below 1 uA, allowing battery-powered sensor nodes to run for years on a single coin cell. The 10-bit ADC with up to 8 channels reads analog sensors (temperature, light, pressure), and the 128-byte HEF non-volatile storage logs calibration and historical data across power cycles. The integrated 48 MHz oscillator wakes the MCU in microseconds, samples the sensor, transmits results via USB or a UART-linked radio, and returns to deep sleep. The UQFN-16 package fits wearable, IoT, and remote environmental monitoring designs.
Recommended
LED Lighting Controller
The PIC16F1455-I/JQ drives multi-channel LED lighting with its two independent 10-bit PWM modules and high-frequency PWM support, enabling smooth dimming and color mixing for RGB or white-tunable fixtures. The 48 MHz instruction rate generates precise PWM duty cycles without visible flicker, while the 14 KB Flash holds lighting effects, fade curves, and USB DMX control protocols. The wide 2.3V to 5.5V supply range suits both 3.3V logic-level strips and 5V architectural fixtures, and the small UQFN-16 footprint fits inside linear LED tubes and compact downlights.
Recommended
USB Charging Monitor
The PIC16F1455-I/JQ monitors USB charging events by sampling VBUS voltage and current via the 10-bit ADC while communicating status back to a host PC over the integrated USB CDC interface. The internal 3.3V regulator can power external circuitry, simplifying USB-powered designs. With 14 KB Flash the part implements USB Type-A/C legacy detection, BC1.2 handshaking logic, and a serial log of charging events. The UQFN-16 (4x4 mm) package fits inside USB cable assemblies, docking stations, and power bank diagnostics tools.
Recommended
Consumer USB Dongle
The PIC16F1455-I/JQ is widely used in low-cost consumer USB dongles such as IR/RF transmitters, license dongles, and configuration tools where the integrated USB eliminates external ICs and reduces total cost below $1 in volume. The 14 KB Flash stores vendor-specific protocols and encryption keys, the 128 B HEF holds unique serial numbers, and the UQFN-16 (4x4 mm) package fits inside a USB-A connector shell. The 8 I/O pins drive LEDs, buttons, or external EEPROMs for higher-density license or credential storage.
Recommended
Industrial USB Diagnostics Tool
The PIC16F1455-I/JQ supports industrial diagnostics tools that interface with PLCs, motor drives, and sensors via USB. The integrated USB CDC and HID classes work with standard terminal software and custom Windows/Linux GUIs without driver installation on modern operating systems. The 10-bit ADC reads analog process signals, the EUSART interfaces with RS-485 transceivers, and the UQFN-16 package plus industrial -40C to +85C temperature range tolerate factory floor conditions. With 14 KB Flash the MCU holds Modbus RTU stacks, custom protocols, and field-updatable firmware via the bootloader.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1455-I/JQ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1455-E/JQ | PIC16F1455T-I/JQ | PIC16F1454-I/JQ | PIC16LF1455-I/JQ | PIC16F1455-I/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | UQFN-16 (4x4 mm) | UQFN-16 (4x4 mm) - same | UQFN-16 (4x4 mm) - same | UQFN-16 (4x4 mm) - same | UQFN-16 (4x4 mm) - same | UQFN-16 (4x4 mm) - same |
| Flash Memory | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB |
| USB Module | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed | No USB | USB 2.0 Full-Speed | USB 2.0 Full-Speed |
| Operating Voltage | 2.3 V to 5.5 V | 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 |
| Temperature Range | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| I/O Pins | 8 | 8 | 8 | 8 | 8 | 8 |
| ADC Resolution | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
Key Differentiators
- Industrial temperature grade for mainstream designs (vs PIC16F1455-E/JQ)
- Tape and reel packaging variant available without die change (vs PIC16F1455T-I/JQ)
- USB module present while keeping same package (vs PIC16F1454-I/JQ)
Design Notes
Place a 0.1 uF decoupling capacitor as close as possible to the VDD pin (pin 1) with the trace to the cap kept short and wide. Add a bulk capacitor (4.7 uF to 10 uF) near the MCU when driving USB downstream devices, since inrush current on USB connect can briefly exceed 50 mA. The internal 3.3V regulator provides up to ~50 mA for external circuitry, but ensure total system draw stays within USB inrush budget per USB 2.0 spec.
Route the USB D+ (pin 12) and D- (pin 13) traces as a 90-ohm differential pair with continuous ground reference beneath. Keep the pair matched within 150 mils length difference and avoid vias on these signals where possible. The exposed thermal pad (EP) on the bottom of the UQFN-16 package MUST be soldered to a ground pad connected to VSS, both for thermal dissipation and for stable USB signaling - missing this connection is a common cause of USB enumeration failures.
Do not omit the 0.1 uF bypass cap on VDD, do not leave the exposed pad floating, and do not route the USB differential pair over plane splits - any of these will cause USB enumeration or radio susceptibility failures. The MCLR pin (RA3, pin 4) is only enabled when the MCLRE configuration bit is set; if unused as a reset, it can serve as a digital input only. The PPS (Peripheral Pin Select) system must be configured before enabling peripherals on non-default pins.
For USB bus-powered designs, the VBUS sense line should be connected through a voltage divider to an ADC-capable pin (e.g., RA0 or RA1) for monitoring attach/detach events and BC1.2 negotiation. The internal pull-up on D+ enables the part to enumerate as a Full-Speed device; no external 1.5k pull-up resistor is needed. Keep the trace from D+/D- to the USB connector under 50 mm when possible to minimize reflections.
At 48 MHz and 5.5V supply, the PIC16F1455-I/JQ draws roughly 8-10 mA active current, dissipating approximately 50 mW. The UQFN-16 (4x4 mm) package has a theta_JA around 40 C/W when the exposed pad is properly soldered to a 1 square inch copper pour on a 4-layer PCB. This gives a junction temperature rise of about 2 C above ambient - well within the -40C to +85C industrial range. For high-temperature environments, choose the PIC16F1455-E/JQ extended-temperature variant instead.
Compliance Information
RoHS and lead-free compliance confirmed per Microchip product page. AEC-Q100 not applicable - automotive grade parts use the -VAO suffix. Halogen-free status not explicitly stated in distributor data - set to unknown.
