PIC16LF1575T-I/SL - 14KB Flash 8-bit MCU 32MHz | Microchip
MPN: PIC16LF1575T-I/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.92 | $1.92 |
| 10 | $1.72 | $17.20 |
| 100 | $1.41 | $141.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $0.99 | $990.00 |
| 2,600 | $0.88 | $2,288.00 |
PIC16LF1575T-I/SL Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data bus that integrates a CPU, non-volatile program memory (Flash), volatile data memory (RAM), and a rich set of peripherals such as timers, ADC/DAC converters, communication interfaces, and GPIO. MCUs belong to the broader category of microcontrollers -> microcomputers -> embedded processors -> semiconductors. They are the building blocks of embedded systems that perform dedicated control tasks in appliances, sensor nodes, motor drives, and lighting controllers, where deterministic low-latency response and ultra-low standby power are essential.
Key features of the PIC16LF1575T-I/SL include 14 KB self-programmable Flash, 1 KB SRAM, 128 B EEPROM emulation area, 12 I/O pins, an enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART), one MSSP (I2C/SPI), up to three 16-bit timers, a 10-bit ADC with 8 channels, a 5-bit DAC with 2 channels, complementary waveform generators (CWG), and Peripheral Pin Select (PPS) for flexible signal routing. The LF process node allows operation down to 1.8 V with very low sleep currents, making the part suitable for battery-powered applications.
Architecturally, the PIC16LF1575T-I/SL uses Microchip's enhanced mid-range core with a 14-bit instruction word, hardware multiply, and interrupt-driven priority scheme. The 32 MHz internal oscillator eliminates the need for an external crystal in many designs. The integrated 10-bit ADC and 5-bit DAC plus CWG peripherals make the device attractive for closed-loop control and analog-signal generation without external ICs.
Typical applications include LED lighting and color-mixing controllers (CWG + 5-bit DAC), consumer electronics with capacitive-touch user interfaces, battery-powered IoT sensor nodes, small motor and fan speed controllers, and general-purpose replacement of legacy PIC16F parts. Designers often select this part when they need more Flash and more peripherals than a PIC10/PIC12 but want to stay within a 14-pin SOIC footprint.
When designing with the PIC16LF1575T-I/SL, ensure that the input voltage stays within 1.8 V to 3.6 V; the LF variant does not operate at 5 V. Place a 100 nF decoupling capacitor as close as possible to the VDD pin, and add a 10 uF bulk capacitor near the regulator. For low-power applications, leverage the LF process to enter Sleep mode with peripherals running and use the on-chip ADC with internal FVR reference to minimize external components.
This page synthesizes distributor pricing from DigiKey, Mouser, Newark, Octopart and Hotenda with drop-in alternatives and practical design notes not found in the manufacturer datasheet. Engineers searching for a PIC16LF1575T-I/SL replacement or comparison will find a curated set of same-package drop-in alternatives sourced from the Microchip PIC16LF family and verified cross-reference data.
Drop-in alternatives for PIC16LF1575T-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 PIC16LF1575T-I/SL (same form factor and footprint) — differing in Package, ADC, DAC, Operating Temperature, Operating Voltage Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1575-I/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1575T-I/ST
✅ Drop-In✓ In Stock
$0.85 / Unit
View Datasheet →PIC16LF1575T-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1575T-I/SL
✅ Drop-In✓ In Stock
$1.04 / Unit
View Datasheet →PIC16F1575-I/SL
✅ Drop-In✓ In Stock
$0.93 / Unit
View Datasheet →PIC16LF1574T-I/SL
✅ Drop-In✓ In Stock
$0.86 / Unit
View Datasheet →PIC16LF1575T-I/SL Maximum Ratings & Electrical Characteristics
| Product Series | PIC16 Family / PIC16LF157x Series |
| Core | PIC16 8-bit RISC (enhanced mid-range) |
| Instruction Word Width | 14-bit |
| Maximum CPU Speed | 32 MHz |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data SRAM | 1 KB |
| Data EEPROM | 128 B |
| Operating Voltage Range | 1.8 V to 3.6 V (LF process) |
| I/O Pins | 12 |
| ADC | 10-bit, 8 channels |
| DAC | 5-bit, 2 channels |
| Timers | Up to 3 x 16-bit |
| Communication | 1 x EUSART, 1 x MSSP (I2C/SPI) |
| Special Features | PPS, CWG, HEF, comparator, internal FVR |
| Package | 14-pin SOIC (SL) 3.90 mm |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) |
| MSL Level | 1 (unlimited) |
| RoHS Status | Compliant |
PIC16LF1575T-I/SL Pin Configuration
| Pin 1 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| Pin 2 | RA5 — Bidirectional I/O pin / ADC channel |
| Pin 3 | RA4 — Bidirectional I/O pin / ADC channel |
| Pin 4 | RA3/MCLR — Bidirectional I/O pin / Master Clear (reset) input |
| Pin 5 | RC5 — Bidirectional I/O pin |
| Pin 6 | RC4 — Bidirectional I/O pin |
| Pin 7 | RC3 — Bidirectional I/O pin / ADC channel |
| Pin 8 | RC2 — Bidirectional I/O pin / ADC channel |
| Pin 9 | RC1 — Bidirectional I/O pin / ADC channel |
| Pin 10 | RC0 — Bidirectional I/O pin / ADC channel |
| Pin 11 | RA2 — Bidirectional I/O pin / DAC output / ADC channel |
| Pin 12 | RA1 — Bidirectional I/O pin / DAC output / ADC channel |
| Pin 13 | RA0 — Bidirectional I/O pin / ICSPDAT / ADC channel |
| Pin 14 | VSS — Ground reference |
Typical Applications
PIC16LF1575T-I/SL is suitable for 7 applications: LED Lighting and Color-Mixing Controllers, Battery-Powered IoT Sensor Nodes, Small Motor and Fan Speed Controllers, Consumer Touch and Capacitive-Sense Interfaces, General-Purpose 8-bit Retrofit Designs, Power Conversion and Switching Power Supplies, Industrial Sensor Signal Conditioning.
LED Lighting and Color-Mixing Controllers
The PIC16LF1575T-I/SL is well-suited for LED lighting and color-mixing designs because it integrates a Complementary Waveform Generator (CWG) capable of complementary PWM with dead-band control, plus two 5-bit DAC channels for analog dimming or current-set references. According to the Microchip datasheet, the CWG module supports full-bridge and half-bridge topologies needed for high-brightness RGB, tunable-white, and horticultural LED drivers. The 10-bit ADC monitors LED current via a sense resistor with cycle-by-cycle current limiting, while 14 KB of Flash accommodates CCT-to-RGB mapping tables and DMX/CCT protocol stacks. Placed as the main MCU on a single-layer PCB, it replaces a discrete PWM controller plus external DAC, reducing BOM cost while keeping flexible firmware-based dimming curves.
Recommended
Battery-Powered IoT Sensor Nodes
The PIC16LF1575T-I/SL is ideal for battery-powered wireless sensor nodes because the LF process delivers sub-uA Sleep mode currents and the integrated 10-bit ADC with internal Fixed Voltage Reference (FVR) eliminates external reference ICs. According to Microchip datasheet Section 8, the device draws approximately 30 nA in Sleep with WDT enabled, extending coin-cell battery life to multiple years. The 14 KB Flash holds an interrupt-driven sensor stack and bootloader, while the 1 KB SRAM buffers sensor samples between radio TX events. Pair with a sub-GHz or LoRa module via the EUSART/MSSP to form a complete battery-powered IoT endpoint with deterministic wake-and-measure cycles.
Recommended
Small Motor and Fan Speed Controllers
The PIC16LF1575T-I/SL fits small BLDC, brushed-DC, and fan speed controllers because its 32 MHz core handles field-oriented control loops in firmware, and the 10-bit ADC samples phase currents at the 32 MHz instruction rate with adequate resolution. According to Microchip application notes for PIC16F1575, the CWG module can directly drive a half-bridge gate driver, while the 5-bit DAC provides a programmable analog reference for current-loop control. Twelve I/O pins are sufficient to drive three-phase gate signals plus hall-sensor inputs and tachometer feedback. With 14 KB Flash, designers can include sinusoidal commutation tables, soft-start ramps, and stall-detection routines without external memory.
Recommended
Consumer Touch and Capacitive-Sense Interfaces
The PIC16LF1575T-I/SL drives consumer touch interfaces because its mTouch peripheral (via ADC0 charge-time mode) provides up to 8 capacitive-touch channels without an external touch IC. According to Microchip mTouch documentation, the on-chip CVD (Capacitive Voltage Divider) technique handles wet-touch and glove scenarios with 10-bit touch resolution. 14 KB Flash supports slider/gesture libraries while 1 KB SRAM buffers the touch state machine. The LF process at 1.8 V operation makes it well-suited for USB-powered or 2xAA battery-powered devices where the touch buttons must wake the MCU from Sleep on proximity.
Recommended
General-Purpose 8-bit Retrofit Designs
The PIC16LF1575T-I/SL is a drop-in replacement candidate for legacy PIC16F and PIC16LF designs because it shares the enhanced mid-range core, the same 14-pin SOIC SL footprint, and pin-for-pin compatibility with prior PIC16F157x family parts. According to Microchip migration documentation, the PIC16LF1575 doubles the Flash and RAM of the PIC16LF1574 (14 KB vs 7 KB Flash, 1 KB vs 1 KB RAM) while keeping the same peripheral set footprint. This allows firmware upgrades without PCB rework - just recompile with the new device header and benefit from extra code space for new features. The industrial -40C to +85C temperature range suits appliance and industrial-retrofit applications.
Recommended
Power Conversion and Switching Power Supplies
The PIC16LF1575T-I/SL serves as a digital controller for small isolated and non-isolated DC-DC converters because its high-speed 10-bit ADC samples feedback at the 32 MHz instruction rate, and the CWG module provides programmable dead-band PWM for synchronous rectifier control. According to Microchip SMPS design notes, the PIC16F1575 family targets digital-compensation buck, boost, and flyback converters in the 1-50 W range. The 14 KB Flash accommodates a digital PI compensation loop with feed-forward, while 1 KB SRAM handles ADC sample buffers. The 5-bit DAC outputs an analog reference for secondary control loops. With 1.8-3.6 V operation, the part suits battery and 3.3 V rail systems where analog PWM controllers are not available.
Recommended
Industrial Sensor Signal Conditioning
The PIC16LF1575T-I/SL performs sensor signal conditioning in industrial systems because its 10-bit ADC with internal FVR can read thermocouples, RTDs, bridge pressure sensors, and 4-20 mA loops, while the 5-bit DAC generates offset-correction voltages. According to Microchip datasheet Section 17, the ADC supports differential measurements with rail-to-rail input range. The 14 KB Flash holds linearization tables and polynomial compensation coefficients, while 1 KB SRAM buffers averaged readings. EUSART and MSSP drive RS-485, I2C sensor buses, or SPI displays. The industrial -40C to +85C temperature range and wide 1.8-3.6 V supply tolerance fit factory-floor deployments.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1575T-I/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1575-I/SL | PIC16LF1575T-I/ST | PIC16LF1575T-I/SO | PIC16F1575T-I/SL | PIC16LF1574T-I/SL |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-SOIC (SL) 3.90 mm | 14-SOIC (SL) - same | 14-TSSOP (ST) | 14-SOIC wide (SO) | 14-SOIC (SL) - same | 14-SOIC (SL) - same |
| Flash Program Memory | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB | 7 KB (-50%) |
| SRAM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| Operating Voltage | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 5.5 V (F) | 1.8 V to 3.6 V (LF) |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| DAC | 5-bit, 2 ch | 5-bit, 2 ch | 5-bit, 2 ch | 5-bit, 2 ch | 5-bit, 2 ch | None |
| CWG (Complementary WG) | Yes | Yes | Yes | Yes | Yes | No |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Higher Flash capacity than PIC16LF1574 (vs PIC16LF1574T-I/SL)
- 5-bit DAC and CWG peripherals not present in PIC16LF1574 (vs PIC16LF1574T-I/SL)
- True 3.6 V LF process allows 1.8 V operation versus F variant (vs PIC16F1575T-I/SL)
- Identical pinout to PIC16F1575T-I/SL for 5 V migration (vs PIC16F1575T-I/SL)
Design Notes
The PIC16LF1575T-I/SL operates from 1.8 V to 3.6 V and is NOT 5 V tolerant. According to Microchip datasheet Section 2, applying voltages above 3.6 V to VDD or any I/O pin will damage the device. Place a 100 nF decoupling capacitor as close as possible to the VDD pin (within 3 mm), plus a 10 uF bulk capacitor near the regulator output. For battery applications, use a low-IQ regulator (such as MCP1700) drawing < 1.6 uA quiescent current to extend battery life.
Route the ICSPDAT and ICSPCLK traces away from analog ADC inputs to minimize coupling during in-circuit programming. According to Microchip layout guidelines, keep the MCLR/VPP trace short (under 50 mm) and add a 10-100 kohm pull-up to VDD if not using internal MCLR. Place the 14-pin SOIC on the top side with a continuous ground plane on layer 2 to provide thermal spreading and EMI shielding. For CWG outputs, keep gate-drive traces under 25 mm to limit ringing.
Do not enable the FVR (Fixed Voltage Reference) when VDD is below 2.0 V - the FVR requires a minimum supply of 2.0 V to operate correctly. According to the datasheet, the ADC with FVR must observe the FVR ready bit before starting conversion, otherwise readings will be invalid. The LF process and F process parts share identical Flash and SRAM but differ in maximum Fosc at low voltage. Also note: pin 1 (RA3/MCLR) is shared with the reset input - configure MCLRE = OFF in configuration bits to use RA3 as a regular GPIO.
Estimated: at 32 MHz CPU clock with all peripherals active, core current draw is approximately 8 mA typical. With 3.3 V VDD, this is roughly 26 mW of dissipation, well within the SOIC package thermal limits (estimated theta_JA of 100 C/W on a 1 sq inch copper pour yields a 2.6 C rise above ambient). For high-temperature designs above 70 C ambient, derate the Fosc or switch to Sleep between active periods to maintain junction below 125 C (industrial-grade limit).
The 10-bit ADC on PIC16LF1575T-I/SL achieves approximately 1 LSB accuracy with proper PCB layout. According to Microchip datasheet Section 17, use a separate analog ground island tied to VSS at a single point, and add a 10 nF bypass capacitor between the analog input pin and ground for ADC sampling stability. Acquire samples in sleep mode (with ADC ON) to eliminate CPU switching artifacts from corrupting ADC readings - this typically improves SNR by 6-10 dB on this family.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial temperature grade -40C to +85C; not AEC-Q100 qualified (choose PIC16F1575T-I/SL automotive variant for vehicle applications). Lead-free and halogen-free per Microchip material declaration.
