PIC16LF1455-I/SL - 8-Bit USB MCU, 14KB Flash, 14-SOIC | Microchip
MPN: PIC16LF1455-I/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.55 | $2.55 |
| 10 | $2.28 | $22.80 |
| 100 | $1.97 | $197.00 |
| 500 | $1.78 | $890.00 |
| 1,000 | $1.62 | $1,620.00 |
PIC16LF1455-I/SL Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, optimized for low cost, deterministic real-time control, and simple peripheral integration. Within the embedded hierarchy, the PIC16LF1455 sits between smaller 6/8-pin baseline PICs and higher-end 16-bit dsPIC/PIC24 devices, and is positioned for USB-equipped consumer, industrial, and human-interface designs where a small package and ultra-low standby power are mandatory. The 'LF' prefix denotes the low-voltage 'F' process variant supporting operation down to 2.3V on the VDD rail.
Key features of the PIC16LF1455 include 14 KB self-read/write Flash with high-endurance HEF blocks, 1024 bytes of SRAM, 128 bytes of EEPROM-like non-volatile data storage, an enhanced mid-range core with 49 instructions and a 16-level hardware stack, plus two standalone 10-bit PWM modules, a 10-bit ADC with computation, comparators, and a configurable Logic Cell. Communication peripherals include EUSART, I2C/SPI (MSSP), and a full-speed USB 2.0 device/embedded host/On-The-Go transceiver with internal pull-ups and clock recovery from the USB host - no external crystal required.
The architecture uses a RISC-style Harvard pipeline with a 14-bit instruction word and a single-cycle instruction execution of 200 ns at 48 MHz, which simplifies deterministic timing for USB polling. nanoWatt XLP technology provides deep sleep currents in the microamp range, making the part well suited to USB bus-powered or battery-driven designs that spend most of their life in standby.
Typical applications include low-cost USB HID peripherals (keyboards, mice, custom HID), USB-to-UART bridge dongles, USB-charging-cable identification ICs, LED lighting controllers with USB DMX/control interfaces, capacitive-touch human-interface devices, and industrial sensor nodes with USB diagnostics ports. Its small 14-SOIC footprint allows it to replace larger 20/28-pin designs where the pin budget is tight.
When designing with this device, ensure the VDD rail stays within 2.3V to 5.5V and that the USB DP/DM traces are routed as a 90 ohm differential pair with the D+/D- series resistors per the USB 2.0 specification. The internal 48 MHz oscillator eliminates the need for an external crystal in USB applications, which is the primary BOM-reduction advantage of the 'F1455 family.
This page synthesizes distributor pricing, drop-in alternatives, and design notes for the PIC16LF1455-I/SL not found in the standalone manufacturer datasheet.
Drop-in alternatives for PIC16LF1455-I/SL — 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 PIC16LF1455-I/SL (same form factor and footprint) — differing in Package, ADC, Mounting Type, Operating Temperature, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1455-I/P
✅ Drop-In✓ In Stock
$1.22 / Unit
View Datasheet →PIC16LF1455-E/SL
✅ Drop-In✓ In Stock
$1.4 / Unit
View Datasheet →PIC16F1455-I/SL
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16LF1454-I/SL
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16LF1459-I/SL
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16LF1455-I/SL Maximum Ratings & Electrical Characteristics
| Core | PIC16 Enhanced Mid-Range (8-bit) |
| CPU Architecture | Harvard RISC, 14-bit instruction word |
| Program Memory (Flash) | 14 KB (8K x 14) |
| Data SRAM | 1024 bytes (1 KB) |
| Non-volatile Data Storage | 128 bytes HEF |
| Maximum CPU Frequency | 48 MHz |
| Instruction Execution Time | 200 ns at 48 MHz |
| Hardware Stack Levels | 16 |
| Instruction Set Size | 49 instructions |
| Operating Voltage (VDD) | 2.3 V to 5.5 V (LF variant) |
| I/O Pins | 11 |
| USB Module | USB 2.0 Full-Speed Device/Host/OTG with clock recovery |
| ADC | 10-bit, up to 9 channels |
| PWM | 2 x 10-bit standalone |
| Communication Peripherals | EUSART, MSSP (I2C/SPI), USB |
| Package | 14-SOIC (SL), 3.90 mm body width |
| Operating Temperature Range | -40C to +85C (Industrial, 'I' suffix) |
| Mounting Type | Surface Mount |
| Lead-Free / RoHS | Lead-free, RoHS compliant |
PIC16LF1455-I/SL Pin Configuration
| Pin 1 | RA3 — Digital I/O / analog input AN3 / VPP (ICSP) |
| Pin 2 | RA4 — Digital I/O / analog input AN4 |
| Pin 3 | RA5 — Digital I/O / analog input AN5 / C1IN0+ |
| Pin 4 | RA0 — Digital I/O / ICSPDAT |
| Pin 5 | RA1 — Digital I/O / ICSPCLK |
| Pin 6 | VSS — Ground reference |
| Pin 7 | RA2 — Digital I/O / analog input AN2 / DAC output |
| Pin 8 | RC5 — Digital I/O |
| Pin 9 | RC4 — Digital I/O / D- (USB) |
| Pin 10 | RC3 — Digital I/O / D+ (USB) |
| Pin 11 | RC6 — Digital I/O |
| Pin 12 | RC7 — Digital I/O |
| Pin 13 | VDD — Positive supply (2.3V to 5.5V) |
| Pin 14 | RA0 — Digital I/O / analog input AN0 |
Typical Applications
PIC16LF1455-I/SL is suitable for 7 applications: USB HID Peripherals (Keyboards, Mice, Custom HID), USB-to-UART Bridge Dongles, USB Charging-Cable Identification ICs, LED Lighting Controllers with USB Control Interface, Capacitive-Touch Human Interface Devices, Industrial Sensor Nodes with USB Diagnostics Port, USB Dongle License / Authentication Tokens.
USB HID Peripherals (Keyboards, Mice, Custom HID)
The PIC16LF1455-I/SL fits USB HID peripherals because its integrated USB 2.0 full-speed transceiver with internal 48 MHz oscillator and clock recovery eliminates the external crystal and provides a deterministic 1 ms USB polling loop for HID reports. The 14 KB Flash accommodates USB stack plus HID report descriptors, while 1 KB SRAM is sufficient for HID buffers. The 2.3V-5.5V VDD range supports both 3.3V LDO and 5V USB-bus-powered operation; nanoWatt XLP keeps idle current under 1 uA for battery-powered wireless HID dongles. Eleven I/O pins are adequate for keyboard scan matrices up to 11x N.
Recommended
USB-to-UART Bridge Dongles
The PIC16LF1455-I/SL is a strong fit for low-cost USB-to-UART bridges because its integrated USB 2.0 device mode plus EUSART give a two-chip bridge (MCU + level translator) without an external crystal. The 48 MHz core runs CDC ACM firmware at full USB FS bandwidth (12 Mbps), and 1 KB SRAM buffers enough UART traffic for typical 115.2k-921.6k baud links. The 14-SOIC footprint enables a thumb-drive form factor, and the 2.3V-5.5V range lets the dongle output 3.3V logic directly from USB 5V via a low-drop LDO.
Recommended
USB Charging-Cable Identification ICs
The PIC16LF1455-I/SL fits USB cable ID applications because its integrated USB transceiver with on-chip pull-up/pull-down resistors and clock recovery can detect and emulate BC 1.2 / Type-C Rp/Rd signatures without external components. The 10-bit ADC monitors VBUS and CC line voltages for cable orientation and current advertisement, while 14 KB Flash stores USB descriptor tables and identification firmware. Eleven I/O drive the LED status indicator and the electronic marker IC. Low standby current via nanoWatt XLP keeps total cable power consumption well below USB suspend limits.
Recommended
LED Lighting Controllers with USB Control Interface
The PIC16LF1455-I/SL suits USB-controlled LED lighting because its two 10-bit standalone PWM modules drive RGB or warm-white LED strings with 1024-step resolution per channel, and its integrated USB 2.0 device interface accepts DMX-over-USB or proprietary lighting control protocols from a host PC. The 48 MHz core executes color-mixing math without timing jitter, while nanoWatt XLP keeps standby power below 10 uA when the LED string is off. Eleven I/O drive up to 11 PWM channels (via PWM + IOC + CLC for expansion) and the USB D+/D- lines.
Recommended
Capacitive-Touch Human Interface Devices
The PIC16LF1455-I/SL fits capacitive-touch HIDs because its 11 I/O can be routed through the mTouch capacitive touch peripheral (via on-chip comparators and CVD) for up to 11 touch buttons or a small slider, and its USB 2.0 device interface delivers touch events as HID reports to the host at 1 ms polling. The 14 KB Flash holds mTouch libraries plus a USB HID stack within the same die, while nanoWatt XLP enables deep sleep between touches with wake-up latency under 100 us via IOC. The 14-SOIC package supports slim industrial control-panel designs.
Recommended
Industrial Sensor Nodes with USB Diagnostics Port
The PIC16LF1455-I/SL works in industrial sensor nodes where a USB diagnostics port is needed for field calibration because its integrated USB transceiver with clock recovery provides a maintenance interface without adding an external crystal or second MCU. The 10-bit ADC reads analog sensors (temperature, pressure, 4-20 mA loop monitor), and the MSSP I2C/SPI peripheral connects to digital sensors. The -40C to +85C industrial temperature grade handles factory-floor environments. 1 KB SRAM buffers USB diagnostic transfers while the main sensor loop runs deterministically at 48 MHz.
Recommended
USB Dongle License / Authentication Tokens
The PIC16LF1455-I/SL fits hardware authentication dongles because its 14 KB Flash stores a vendor license key with read-protection, the 128-byte HEF block provides non-volatile secure storage for one-time-programmable data, and its integrated USB 2.0 device interface with internal 48 MHz oscillator eliminates external BOM cost. nanoWatt XLP deep-sleep mode under 1 uA keeps the dongle's idle current negligible. The 14-SOIC package fits a USB-A form factor with only 11 I/O needed for LED indicators.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1455-I/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1455-I/P | PIC16LF1455-E/SL | PIC16F1455-I/SL | PIC16LF1454-I/SL | PIC16LF1459-I/SL |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-SOIC (SL) | 14-PDIP (P) | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same |
| Program Flash | 14 KB | 14 KB | 14 KB | 14 KB | 8 KB | 20 KB |
| Data SRAM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| Max CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Operating Voltage (VDD) | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 3.0 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| I/O Pins | 11 | 11 | 11 | 11 | 11 | 17 |
| USB 2.0 Module | Yes (FS Device/Host/OTG) | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Internal USB clock recovery eliminates external crystal (vs PIC16LF1455-I/P)
- Extended -40C to +125C temperature grade option (vs PIC16LF1455-E/SL)
- 2.3V-5.5V low-voltage VDD range (vs PIC16F1455-I/SL)
Design Notes
Place a 1uF X7R ceramic decoupling capacitor as close as possible to the VDD pin (Pin 13) and a second 100 nF X7R directly across the package for high-frequency USB noise rejection. The PIC16LF1455-I/SL integrates a 3.3V USB internal voltage regulator that does NOT need external bypass. For bus-powered designs, a low-Iq LDO such as MCP1700 (1.6uA quiescent) on the upstream 5V rail keeps idle current well below the USB suspend 2.5 mA budget.
Route the USB D+ and D- lines (RC3/RC4) as a 90-ohm differential pair with length matching to within 150 mil. Keep the trace impedance controlled per the USB 2.0 specification and avoid routing near high-current switching signals. A ground reference plane under the D+/D- traces is required for impedance continuity. Series resistors on D+/D- are NOT required - the PIC16LF1455 integrates them internally.
Estimated: at maximum VDD = 5.5V and active 48 MHz with USB traffic, the PIC16LF1455-I/SL dissipates roughly 50 mW (typical I_DD ~10 mA). The 14-SOIC package has a thermal resistance theta_JA of approximately 80 C/W, giving a junction temperature rise of only 4C above ambient - well within the 125C maximum. No heatsink is required at any reasonable operating condition for this part.
Do NOT omit the VDD decoupling cap - the USB transceiver generates 480 MHz harmonics that couple into VDD and can corrupt USB signaling if not bypassed. Do NOT enable the internal pull-up on D- until USB is configured; premature pull-up violates USB connect timing. Do NOT exceed 5.5V on VDD even transiently - the LF variant's absolute maximum is 6.5V but sustained 5.5V operation is recommended. Always configure the CONFIG1 register's WDTE bit to disable the watchdog unless you service it in firmware.
Compliance Information
Lead-free / RoHS compliant per Microchip product page. The I suffix denotes industrial temperature grade; AEC-Q100 automotive qualification is not applicable for this part number. For AEC-Q100 grade, contact Microchip for PIC16F1455-I/SL automotive variants.
