PIC16LF15355-I/ML - 8-Bit XLP MCU 14KB Flash 28-QFN | Microchip
MPN: PIC16LF15355-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.82 | $1.82 |
| 10 | $1.64 | $16.40 |
| 100 | $1.46 | $146.00 |
| 500 | $1.31 | $655.00 |
| 1,000 | $1.17 | $1,170.00 |
PIC16LF15355-I/ML Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), and programmable peripherals into one package. The PIC16 family uses a RISC-based 8-bit architecture with a modified Harvard structure. The 'LF' prefix in PIC16LF15355 indicates a wide-voltage (1.8V-3.6V) operating range optimized for low-power applications, distinguishing it from the 5V-tolerant 'F' variant. This device family fits within the broader hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor.
Key differentiating features include 4 PWM modules, integrated comparators, a 5-bit DAC, a 10-bit ADC with computation, Complementary Waveform Generator (CWG), 4 Configurable Logic Cells (CLC), 2 EUSART peripherals, and SPI/I2C interfaces. The Core Independent Peripherals (CIPs) allow hardware-level functionality without CPU intervention, reducing firmware complexity and active power draw.
The XLP technology provides sleep currents below 50 nA typical, with multiple wake-up sources including WDT, peripheral interrupts, and RTCC alarm. This makes the device well-suited for IoT endpoints where battery life of years is required.
Typical applications include IoT sensor nodes, low-power wireless endpoints, battery-powered consumer devices, LED lighting controllers, and human-machine interface (HMI) controls. The wide operating voltage (1.8V-3.6V) and rich peripheral set make it a flexible platform for embedded designers.
When designing with this device, allocate sufficient decoupling (100nF + 1uF near VDD) and ensure the exposed pad is soldered to the ground plane for thermal dissipation. The ICSP programming interface requires dedicated pins that may conflict with general I/O at runtime - consult the device pin allocation table.
This page synthesizes Microchip official specifications, distributor pricing, drop-in alternatives within the PIC16 family, and practical design notes beyond the manufacturer datasheet.
Drop-in alternatives for PIC16LF15355-I/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 PIC16LF15355-I/ML (same form factor and footprint) — differing in Comparators, DAC, Package, ADC, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF15354-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F15355-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF15355-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16LF15355-E/ML
✅ Drop-In✓ In Stock
$1.28 / Unit
View Datasheet →PIC16LF15354-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF15355-I/ML Maximum Ratings & Electrical Characteristics
| Architecture | PIC16 8-bit RISC (enhanced mid-range) |
| CPU Core | 8-bit |
| Maximum Clock Speed | 32 MHz |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| RAM | 1 KB |
| EEPROM | 256 bytes |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial, 'I' grade) |
| Package | 28-pin QFN (6x6 mm) ML |
| Mounting Type | Surface Mount (QFN with exposed thermal pad) |
| PWM Channels | 4 (10-bit and 16-bit configurable) |
| ADC | 10-bit, up to 24 channels |
| DAC | 5-bit DAC |
| Comparators | 2 with selectable hysteresis |
| EUSART | 2 |
| I2C | 1 (MSSP) |
| SPI | 1 (MSSP) |
| CLC (Configurable Logic Cells) | 4 |
| CWG (Complementary Waveform Generator) | Yes |
| RoHS Status | Compliant |
PIC16LF15355-I/ML Pin Configuration
| Pin 1 | RA5 — GPIO/ICSP data; analog-capable |
| Pin 2 | RA4 — GPIO/Timer0 clock |
| Pin 3 | RA3 — GPIO/MCLR (Master Clear, weak pull-up) |
| Pin 4 | RC5 — GPIO |
| Pin 5 | RC4 — GPIO |
| Pin 6 | RC3 — GPIO/SCL1 (I2C clock) |
| Pin 7 | RC2 — GPIO |
| Pin 8 | RC1 — GPIO/SDA2 |
| Pin 9 | RC0 — GPIO |
| Pin 10 | VSS — Ground |
| Pin 11 | RB7 — GPIO/ICSP programming data |
| Pin 12 | RB6 — GPIO/ICSP programming clock |
| Pin 13 | RB5 — GPIO/AN13 |
| Pin 14 | RB4 — GPIO/AN11 |
| Pin 15 | RB3 — GPIO/AN9 |
| Pin 16 | RB2 — GPIO/AN8 |
| Pin 17 | RB1 — GPIO/AN10 |
| Pin 18 | RB0 — GPIO/AN12 |
| Pin 19 | VDD — Positive supply voltage (1.8V-3.6V) |
| Pin 20 | VSS — Ground |
| Pin 21 | RA2 — GPIO/AN2 |
| Pin 22 | RA1 — GPIO/ICLC1/AN1 |
| Pin 23 | RA0 — GPIO/ICLC2/AN0 |
| Pin 24 | RC7 — GPIO/RX |
| Pin 25 | RC6 — GPIO/TX |
| Pin 26 | RC5 — GPIO/SDI |
| Pin 27 | RC4 — GPIO/SDO |
| Pin 28 | RA7 — GPIO/OSC1 |
| Pin EP | EP — Exposed thermal pad - solder to PCB ground |
Typical Applications
PIC16LF15355-I/ML is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, LED Lighting Controllers, Human-Machine Interface (HMI) Controls, Industrial Sensor Signal Conditioning, Low-Power Wireless Endpoints, Consumer Appliance Controls.
Battery-Powered IoT Sensor Nodes
The PIC16LF15355-I/ML's XLP technology with sub-1 uA sleep currents and 1.8V-3.6V VDD range make it ideal for coin-cell powered wireless sensor endpoints. Its 14 KB Flash fits BLE beacon firmware plus custom application code, while 1 KB RAM handles sensor buffers without external memory. The device wakes from sleep via RTC alarm or external interrupt, takes a sensor reading, transmits, and returns to sleep - all on a single CR2032 cell lasting multiple years.
Recommended
LED Lighting Controllers
The PIC16LF15355-I/ML's 4 PWM channels and Complementary Waveform Generator (CWG) suit multi-channel LED drivers and dimming controllers. With 14 KB Flash, firmware can host DMX512, DALI, or proprietary lighting protocols. The CWG module generates complementary PWM outputs with programmable dead-band, eliminating the MCU in half-bridge LED driver stages and reducing BOM cost. Internal 32 MHz oscillator removes the need for an external crystal in cost-sensitive lighting designs.
Recommended
Human-Machine Interface (HMI) Controls
For capacitive touch keypads, rotary encoder inputs, and small OLED-display UIs, the PIC16LF15355-I/ML offers the right mix of peripherals and memory. The 4 CLC (Configurable Logic Cells) implement glue logic between buttons and PWM outputs in hardware, reducing firmware complexity. With 1 KB SRAM, 128x64 OLED framebuffers fit comfortably. The 10-bit ADC reads potentiometers or light-dependent resistors for analog inputs in industrial control panels.
Recommended
Industrial Sensor Signal Conditioning
In 4-20 mA loop-powered sensor transmitters and field-mounted instruments, the PIC16LF15355-I/ML serves as the digital conditioning core. Its 10-bit ADC handles bridge-sensor outputs directly, while the integrated 5-bit DAC trims offset. Two comparators enable hardware-level threshold detection for alarm outputs without CPU intervention. The 1.8V minimum VDD supports single-cell Li-ion or supercapacitor backup during brownout conditions on 24V industrial loops.
Recommended
Low-Power Wireless Endpoints
For sub-GHz or BLE endpoint nodes, the PIC16LF15355-I/ML serves as the application host MCU paired with a radio transceiver over SPI. The 14 KB Flash accommodates simple protocol stacks such as LoRaWAN or Wireless M-Bus, while the 1 KB RAM holds transient packet buffers. Hardware CLC blocks can implement timing-critical radio events without firmware latency, reducing packet loss in dense networks. Sleep currents below 1 uA between transmissions extend battery life beyond 5 years.
Recommended
Consumer Appliance Controls
In white goods, small kitchen appliances, and personal care devices, the PIC16LF15355-I/ML provides user-interface and motor-control functions. The CWG drives small brushless-DC fans directly via external MOSFETs, and the 4 PWMs control LED indicators, buzzer tones, or triac dimming. The 14 KB Flash supports multi-language UI strings and product variants. Industrial -40C to +85C temperature grade suits refrigerator, dishwasher, and outdoor appliance environments.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF15355-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF15354-I/ML | PIC16F15355-I/ML | PIC16LF15355-E/ML |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-QFN (6x6) | 28-QFN (6x6) - same | 28-QFN (6x6) - same | 28-QFN (6x6) - same |
| Flash Memory | 14 KB | 7 KB (-50%) | 14 KB (same) | 14 KB (same) |
| RAM | 1 KB | 512 B (-50%) | 1 KB (same) | 1 KB (same) |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V (same) | 2.3 V to 5.5 V | 1.8 V to 3.6 V (same) |
| Temperature Grade | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Extended (-40C to +125C) |
| CPU Speed | 32 MHz | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) |
| PWM Channels | 4 | 4 (same) | 4 (same) | 4 (same) |
Key Differentiators
- More Flash than PIC16LF15354 within same family (vs PIC16LF15354-I/ML)
- Wider memory window vs PIC16F15355 within same family (vs PIC16F15355-I/ML)
- Industrial temp grade option vs extended (vs PIC16LF15355-E/ML)
Design Notes
The 28-QFN package has an exposed thermal pad (EP) on the underside that MUST be soldered to a PCB ground pad of at least equal size. Without proper EP soldering, the device will overheat at moderate loads and may fail. Recommended PCB layout: thermal via array (8-12 vias, 0.3 mm drill, 0.6 mm pitch) connecting the EP to an internal ground plane. Use 100nF + 1uF ceramic decoupling capacitors placed within 3 mm of each VDD pin, with the 100nF closer.
For battery-powered designs using XLP sleep modes, use the PIC16LF15355's low-power sleep with RTC wake to achieve sub-1 uA quiescent current. Estimated: with VDD=3.0V and all peripherals disabled except WDT (1-second period), typical IDD is ~0.8 uA. Add external load switch (MOSFET) for any always-on peripherals to achieve years of battery life from a CR2032. Disable unused peripherals via PMDx registers, not just firmware.
Pin RA3 on the 28-QFN is shared with MCLR (Master Clear). To use RA3 as a general I/O, the MCLRE configuration bit must be cleared in CONFIG words. Otherwise, the pin remains in reset mode and will not function as GPIO. Also note: pins RB6 and RB7 are ICSP programming clock and data - if these pins are pulled low at startup, the device enters programming mode. Use 10k pull-ups on both lines to avoid accidental entry into programming mode during power-up transients.
Route the analog signals (AN0-AN13) away from digital switching traces and PWM outputs to minimize ADC conversion noise. Place the AVSS analog ground pin connection directly to the PCB ground plane, separate from the noisy digital ground return paths. For best ADC accuracy, use the dedicated VDDA/VSSA pair on larger pin-count variants - on the 28-QFN, AVSS shares with VSS internally.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified in 'I' grade; for AEC-Q100 automotive applications, contact Microchip for the AEC-Q100 qualified part number. Lead-free and halogen-free per Microchip material declaration.
