PIC16LF1615-I/SL - 8-bit 32MHz 14KB Flash MCU | Microchip | SOIC-14
MPN: PIC16LF1615-I/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.62 | $1.62 |
| 10 | $1.48 | $14.80 |
| 100 | $1.22 | $122.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.91 | $910.00 |
| 3,000 | $0.78 | $2,340.00 |
PIC16LF1615-I/SL Overview
Background: An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU core, Flash program memory, SRAM data memory, and peripherals such as timers, ADCs, and communication interfaces on one silicon die. The '8-bit' designation refers to the ALU and data bus width, which sets the natural operand size for arithmetic, register operations, and I/O handling. PIC microcontrollers sit in the broader taxonomy of embedded microcontrollers -> microcontrollers -> microprocessors -> integrated circuits, and the PIC16 sub-family targets ultra-low-power, cost-sensitive applications using a Harvard RISC architecture.
Key features include 14 KB self-programmable Flash, 1 KB RAM, 256 B EEPROM, up to 32 MHz internal oscillator, 10-bit ADC, Zero-Cross Detect (ZCD) for TRIAC/solid-state-relay control, Configurable Logic Cell (CLC), Complementary Waveform Generator (CWG), and Peripheral Pin Select (PPS). The device also includes an integrated temperature indicator, multiple I/O ports with interrupt-on-change, and Microchip's eXtreme Low Power (XLP) technology providing nanoWatt deep-sleep modes below 50 nA typical.
The PIC16LF1615 uses Microchip's enhanced mid-range core with a 14-bit instruction word and a hardware stack of 16 levels. The 10-bit ADC supports up to 12 channels with hardware Capacitive Voltage Divider (CVD) for capacitive-touch sensing, and the CRC module supports memory integrity checking for IEC 60730 class B safety compliance. PPS allows mapping digital peripherals (UART, SPI, PWM, CLC outputs) to a wide choice of RPn pins, greatly simplifying PCB layout.
Typical applications include LED lighting controls with TRIAC dimming, capacitive touch user interfaces, battery-powered IoT sensor nodes, white-goods and home-appliance user modules, and functional-safety embedded sub-systems where CRC scan and WWDT are required for IEC 60730 / UL 60730 compliance in household appliances.
Design consideration: When migrating from the 5V PIC16F1615 to the LF variant, verify that the application's analog references, VOH levels, and peripheral operating ranges stay inside the 1.8V-3.6V supply envelope. Use the PPS register to remap peripherals before relying on default pin assignments, and place a 0.1 µF ceramic VDD bypass capacitor within 5 mm of the VDD pin.
This page synthesizes distributor pricing, drop-in alternatives in the SOIC-14 footprint, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16LF1615-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 PIC16LF1615-I/SL (same form factor and footprint) — differing in Package, ADC, I/O Pins, MSL Level, Program Memory Size.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1615-I/SL
✅ Drop-In✓ In Stock
$1.12 / Unit
View Datasheet →PIC16LF1615T-I/SL
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC16LF1615-I/P
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16LF1554-I/SL
✅ Drop-In✓ In Stock
$0.92 / Unit
View Datasheet →PIC16LF1574-I/ST
✅ Drop-In✓ In Stock
$0.85 / Unit
View Datasheet →PIC16LF1503-I/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1615-I/SL Maximum Ratings & Electrical Characteristics
| Series | PIC® XLP™ 16F |
| Core Processor | PIC |
| Core Size | 8-Bit |
| Maximum CPU Speed | 32 MHz |
| Program Memory Size | 14 KB (8K x 14) |
| Program Memory Type | FLASH |
| RAM Size | 1 KB |
| EEPROM Size | 256 B |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Operating Temperature Range | -40 C to +85 C (Industrial, 'I') |
| Package | 14-SOIC (3.90 mm body, SL) |
| Mounting Type | Surface Mount |
| ADC | 10-bit ADC2 with CVD, up to ~12 channels |
| Peripherals | ZCD, CWG, CLC, WWDT, CRC/Scan, PPS |
| Low-Power Modes | XLP nanoWatt, Sleep < 50 nA typical |
| Connectivity | I2C, SPI, UART/USART |
| Lead-Free / RoHS | Lead-Free / RoHS Compliant |
| MSL Level | MSL 1 (unlimited floor life at <30 C / 85% RH) |
| Oscillator | Internal 32 MHz, with PLL option |
PIC16LF1615-I/SL Pin Configuration
| Pin 1 | RA3/MCLR — Digital I/O / Master Clear (reset) input, weak pull-up enabled in configuration |
| Pin 2 | RA0 — PORTA bit 0, analog-capable, ICSPDAT |
| Pin 3 | RA1 — PORTA bit 1, analog-capable, ICSPCLK |
| Pin 4 | RA2 — PORTA bit 2, analog-capable |
| Pin 5 | RC0 — PORTC bit 0, analog-capable |
| Pin 6 | RC1 — PORTC bit 1, analog-capable |
| Pin 7 | RC2 — PORTC bit 2, analog-capable |
| Pin 8 | RC3 — PORTC bit 3, analog-capable, SMBus I/O optional |
| Pin 9 | RC4 — PORTC bit 4, analog-capable, SMBus clock optional |
| Pin 10 | RC5 — PORTC bit 5, analog-capable, configurable logic I/O |
| Pin 11 | RB4 — PORTB bit 4, IOC-capable, PPS I/O |
| Pin 12 | RB5 — PORTB bit 5, IOC-capable, PPS I/O |
| Pin 13 | RB6 — PORTB bit 6, IOC-capable, ICSPCLK / PPS I/O |
| Pin 14 | VSS — Ground reference |
Typical Applications
PIC16LF1615-I/SL is suitable for 6 applications: LED Lighting Control with TRIAC Dimming, Capacitive Touch User Interface, Battery-Powered IoT Sensor Node, Home Appliance Functional Safety Sub-System, Smart Sensor Front-End with Analog Conditioning, General-Purpose 8-bit Embedded Control Module.
LED Lighting Control with TRIAC Dimming
The PIC16LF1615-I/SL is a natural fit for LED lighting drivers using TRIAC phase-cut dimming. Its integrated Zero-Cross Detect (ZCD) directly senses the AC mains zero crossings without an external comparator, while the Complementary Waveform Generator (CWG) drives the MOSFET half-bridge with programmable dead-band to prevent shoot-through. The XLP nanoWatt sleep mode keeps standby current under 50 nA, which is critical for always-on mains-connected controllers. Compared to discrete analog solutions, this integration reduces BOM by 8-10 components and improves dimmer compatibility across leading-edge (forward-phase) and trailing-edge (reverse-phase) dimmers used in retrofit LED bulbs.
Recommended
Capacitive Touch User Interface
The PIC16LF1615-I/SL's 10-bit ADC2 with hardware Capacitive Voltage Divider (CVD) supports up to 12 capacitive-touch channels with automatic scan and noise-robust averaging. The Configurable Logic Cell (CLC) can be wired to wake the MCU from sleep when a touch is detected, keeping average current below 5 µA. Designers typically pair it with the Peripheral Pin Select (PPS) for flexible PCB routing of the touch electrodes. This makes the F1615 ideal for white-goods front panels, induction-cooktop sliders, and appliance touch keypads where IEC 60730 safety-class compliance is mandatory.
Recommended
Battery-Powered IoT Sensor Node
The PIC16LF1615-I/SL is well suited to coin-cell or Li-SOCl2 battery-powered IoT sensor endpoints. Its 1.8V-3.6V supply range matches a single Li-ion or 2x AA cells, the XLP deep-sleep current under 50 nA typical stretches multi-year battery life, and the 32 MHz core provides enough MIPS to run Zigbee or LoRaWAN MAC layers on the integrated UART/SPI peripherals. Compared to the PIC16F1615, the LF variant saves ~30% energy in sleep mode, critical for sub-1 mA average current budgets. A typical configuration board would pair it with a sub-GHz or BLE module, with the F1615 acting as the sensor I/O master.
Recommended
Home Appliance Functional Safety Sub-System
The PIC16LF1615-I/SL includes on-chip CRC/Scan and a Windowed Watchdog Timer (WWDT), both required for IEC 60730 / UL 60730 Class B safety compliance in household appliances such as washing machines, dishwashers, and ovens. Microchip supplies Class B safety libraries that integrate the CRC scan over Flash/RAM and the WWDT windowed heartbeat monitoring with deterministic firmware validation. The 14-SOIC fits on the small sub-board wired in larger household appliances. Compared to an external safety supervisor, this integration cuts BOM by 2-3 parts and reduces PCB area by ~30%.
Recommended
Smart Sensor Front-End with Analog Conditioning
The PIC16LF1615-I/SL's 10-bit ADC2 with hardware oversampling, combined with the Configurable Logic Cell (CLC) and Peripheral Pin Select (PPS), allows designers to build a smart sensor front-end with on-chip signal conditioning. The ADC supports differential inputs, capacitive sensing, and temperature-indicator channels for thermistor or RTD compensation. Typical applications include industrial 4-20 mA loop-powered transmitters, HVAC sensor modules, and environmental monitors. The 1.8V-3.6V supply pairs directly with 3.3V sensor rails, and PPS removes layout constraints on the analog front-end PCB.
Recommended
General-Purpose 8-bit Embedded Control Module
The PIC16LF1615-I/SL is a versatile general-purpose 8-bit MCU for cost-sensitive embedded modules such as HVAC controls, fan drivers, pump controllers, and small motor control loops. Its 32 MHz core, 14 KB Flash, 1 KB SRAM, and rich peripheral set (UART, SPI, I2C, PWM, CWG) cover most low-to-mid complexity control tasks. The CWG drives half-bridges for BLDC or brushed DC motors with programmable dead-band and shutdown logic. Combined with the wide 1.8V-3.6V supply, the F1615 supports direct Li-ion, 2x AA, or regulated 3.3V system rails.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1615-I/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1615-I/SL | PIC16LF1615T-I/SL | PIC16LF1554-I/SL | PIC16LF1503-I/SL |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-SOIC (SL) | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same |
| Supply Voltage Range | 1.8 V to 3.6 V | 1.6 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Flash Program Memory | 14 KB (8K x 14) | 14 KB | 14 KB | 7 KB (-50%) | 3.5 KB (-75%) |
| RAM Size | 1 KB | 1 KB | 1 KB | 512 B (-50%) | 128 B (-87%) |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| ADC | 10-bit ADC2 with CVD | 10-bit ADC2 with CVD | 10-bit ADC2 with CVD | 10-bit ADC (no CVD) | 10-bit ADC |
| Special Peripherals | ZCD, CWG, CLC, WWDT, CRC, PPS | ZCD, CWG, CLC, WWDT, CRC, PPS | ZCD, CWG, CLC, WWDT, CRC, PPS | PPS, fewer peripherals | Minimal set, no ZCD/CWG/CLC |
| Unit Price (qty 1, approx) | $1.62 | $1.65 | $1.55 | $1.25 | $0.95 |
Key Differentiators
- Integrated ZCD + CWG + CLC + CRC + WWDT in a single 14-SOIC (vs PIC16LF1503-I/SL)
- 32 KB Flash with hardware CVD capacitive-touch and PPS routing (vs PIC16LF1554-I/SL)
- XLP nanoWatt deep-sleep below 50 nA typical (vs PIC16F1615-I/SL)
Design Notes
Decouple VDD/VSS with a 0.1 µF X7R ceramic capacitor placed within 5 mm of the VDD pin, plus a 10 µF bulk capacitor on the main 3.3V rail. For noise-sensitive ADC applications, add a small ferrite bead between the digital supply and the AVdd/AVss pins to keep ADC reference noise below 1 LSB. The PIC16LF1615's nanoWatt deep-sleep mode draws under 50 nA typical but the brown-out reset (BOR) circuit adds ~1 µA; disable BOR via configuration bits if extreme low standby is required and the supply is well-regulated.
The 14-SOIC package has a typical thermal resistance of ~75 C/W junction-to-ambient. At 3.3V, 32 MHz and full peripheral activity, the device dissipates ~30 mW worst case, giving a junction-to-ambient rise of ~2.3 C above room temperature - well inside the -40 C to +85 C industrial range. For designs in enclosed housings above 60 C ambient, derate FOSC below 16 MHz to keep junction temperature comfortable.
Use ICP-OF sequencing (ICSPDAT and ICSPCLK on RA0/RA1) for in-circuit serial programming. Route the ICSP lines directly to a 6-pin header with no series components, and avoid placing decoupling on ICSPCLK pin to prevent programming failures. The PPS module lets you re-map UART/SPI/I2C to almost any RPn pin, but trace stubs should still be kept under 10 mm to avoid ringing on the high-speed SPI bus above 8 MHz.
Estimated: ignoring the WDT postscaler setting - the default 1:32 postscaler with a 16 MHz FOSC creates a 2 ms WDT timeout, which can prematurely reset a slow firmware boot loop. Configure the WDT postscaler to 1:256 or 1:512 for boot sequences longer than 100 ms. Also remember that CLC outputs and ZCD inputs can NOT be remapped via PPS - they are locked to specific pins on the 14-SOIC variant, so always cross-check the pinout table before designing the PCB.
For capacitive-touch sensing via ADC2 CVD, route the touch electrodes on the bottom or top layer under a ground-free keep-out and avoid ground pours within 1 cm of the electrode. Use 4-layer PCBs with a dedicated ground plane below the touch electrodes for best noise immunity. The CVD scan sequence with oversampling ratio set to 1:64 rejects 50/60 Hz mains hum and provides >100:1 SNR on touch-sensing PCBs.
Compliance Information
RoHS and lead-free per Microchip product page; not AEC-Q100 qualified (industrial-grade 'I' temperature range only). The device supports IEC 60730 / UL 613 Class B safety library integration via on-chip CRC/Scan and WWDT but is not automotive-qualified. Halogen-free status not explicitly listed in web data - marked unknown.
