PIC16F1575-I/SL - 8-Bit MCU, 32MHz, 14KB Flash | Microchip
MPN: PIC16F1575-I/SL β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.55 | $1.55 |
| 10 | $1.39 | $13.90 |
| 100 | $1.21 | $121.00 |
| 500 | $1.06 | $530.00 |
| 1,000 | $0.93 | $930.00 |
PIC16F1575-I/SL Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile data memory (RAM), and a mix of analog and digital peripherals. Within the broader taxonomy, the PIC16F1575 sits under 8-bit microcontrollers -> microcontrollers -> microprocessors & MCUs -> embedded processors -> semiconductors. Its enhanced mid-range (XLP) core supports a 49-instruction set with 16 hardware stack levels and deterministic interrupt latency, making it appropriate for real-time control tasks where predictability matters more than raw throughput.
Key differentiating features of the PIC16F1575-I/SL include its four 16-bit PWMs (each with dedicated timer base and period register, capable of edge-aligned and center-aligned modes), 10-bit ADC with acquisition timer, 5-bit DAC, comparator, EUSART, MSSP (SPI/I2C), two 8-bit timers, one 16-bit timer, and 12 I/O pins. The device also features the eXtreme Low Power (XLP) sleep mode drawing sub-microamp currents for battery-driven designs.
Architecturally, the PIC16F1575 employs a Harvard RISC architecture with separate program and data buses, allowing instruction fetch and data access in a single clock cycle. The on-chip high-precision 16 MHz internal oscillator can be used directly or scaled to 32 MHz via the 4x Phase-Locked Loop, removing the need for external crystals in cost-sensitive designs. Configurable logic cells (CLC), Complementary Waveform Generator (CWG), and Numerically Controlled Oscillator (NCO) provide synthesizable digital functions in hardware, freeing the core for higher-level tasks.
Typical applications include LED lighting drivers (where the four 16-bit PWMs allow individual channel intensity control for RGBW strips), stepper and brushed DC motor control, switch-mode power supply (SMPS) digital control loops, battery chargers, fan controllers, and general-purpose sensor interfacing. The 10-bit ADC and op-amp peripheral allow direct signal conditioning of low-level analog inputs without external components.
When designing with this MCU, pay particular attention to the maximum I/O current budget (per-pin and aggregate) and the recommended decoupling network (typically 100 nF plus 10 uF bulk near VDD). The internal oscillator is factory-calibrated to +/- 1 % across voltage and temperature, but a software PLL trim can tighten this further for time-sensitive protocols such as UART at high baud rates.
This page synthesizes distributor pricing, drop-in alternatives from the PIC16F157x and PIC16F152x families, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC16F1575-I/SL β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16F1575T-I/SL
β Drop-Inβ In Stock
$1.04 / Unit
View Datasheet βPIC16F1575-E/SL
β Drop-Inπ Reference alternative (not in catalog)
PIC16F1574-I/SL
β Drop-Inπ Reference alternative (not in catalog)
PIC16F1575-I/SL Maximum Ratings & Electrical Characteristics
| Core | PIC16 8-bit Enhanced Mid-range RISC |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| RAM | 1024 bytes |
| Data EEPROM | 0 bytes (Flash emulated) |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage | 2.3 V to 5.5 V |
| I/O Pins | 12 |
| ADC | 10-bit, up to 8 channels |
| PWM Channels | 4 x 16-bit (independent) |
| Timers | 2 x 8-bit, 1 x 16-bit |
| Communication | 1 x EUSART, 1 x MSSP (SPI/I2C) |
| Internal Oscillator | 16 MHz factory-calibrated (+/- 1 %) |
| PLL | 4x (yields 32 MHz from 8 MHz) |
| Package | 14-SOIC (SL), 150-mil, 3.90 mm body |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Mounting Type | Surface Mount |
| MSL Level | 1 (unlimited floor life) |
| RoHS Status | Compliant |
PIC16F1575-I/SL Pin Configuration
| Pin 1 | VDD β Positive power supply (2.3 V to 5.5 V) |
| Pin 2 | RA5 β Bidirectional I/O / PWM4 output |
| Pin 3 | RA4 β Bidirectional I/O / PWM3 output |
| Pin 4 | RA3/MCLR β I/O or Master Clear (reset) input; tie to VDD via pull-up for normal operation |
| Pin 5 | RC5 β Bidirectional I/O / PWM2 output |
| Pin 6 | RC4 β Bidirectional I/O / PWM1 output |
| Pin 7 | RC3 β Bidirectional I/O / analog input |
| Pin 8 | RC2 β Bidirectional I/O / analog input |
| Pin 9 | RC1 β Bidirectional I/O / analog input |
| Pin 10 | RC0 β Bidirectional I/O / analog input |
| Pin 11 | RA2 β Bidirectional I/O / analog input |
| Pin 12 | RA1 β Bidirectional I/O / analog input |
| Pin 13 | RA0 β Bidirectional I/O / analog input |
| Pin 14 | VSS β Ground reference |
Typical Applications
PIC16F1575-I/SL is suitable for 6 applications: LED Lighting Drivers, Stepper Motor Control, Switch-Mode Power Supply (SMPS) Digital Control, Battery Chargers and Power Banks, Sensor Interface and IoT Edge Nodes, Brushed DC Motor and Fan Control.
LED Lighting Drivers
The PIC16F1575-I/SL is purpose-built for LED lighting. Its four independent 16-bit PWMs each drive a channel with up to 16-bit duty cycle resolution (>65 000 steps), eliminating flicker and supporting smooth color mixing on RGBW strips. The internal 32 MHz clock and 10-bit ADC allow closed-loop current regulation through a sense resistor and op-amp front end, while the XLP sleep mode draws sub-microamp standby current for Always-on smart-bulb designs.
Recommended
Stepper Motor Control
Stepper drives need precise, high-resolution PWM phase generation. The PIC16F1575-I/SL delivers four 16-bit PWMs that can be software-interleaved to generate microstepping waveforms at 1/256 step resolution. Its 32 MHz CPU provides ample headroom for acceleration/deceleration ramps, while the 10-bit ADC monitors back-EMF for stall detection. The Complementary Waveform Generator (CWG) hardware IP supports dead-band insertion for half-bridge drivers.
Recommended
Switch-Mode Power Supply (SMPS) Digital Control
Digital SMPS control loops benefit from the PIC16F1575-I/SL's 4 x 16-bit PWMs (each independently triggerable), 10-bit ADC with dedicated acquisition timer, and on-chip op-amp peripheral. The MCU can implement peak-current-mode control of a buck/boost/SEPIC topology at switching frequencies up to 1 MHz when each PWM is paired with the high-speed ADC. The 32 MHz CPU executes the PID compensator in well under 1 us, keeping control-loop latency well within typical 10 us target.
Recommended
Battery Chargers and Power Banks
For single-cell Li-ion/LiFePO4 chargers, the PIC16F1575-I/SL runs the CC/CV algorithm, samples charge current with its 10-bit ADC, and modulates a synchronous buck through a 16-bit PWM. Its wide 2.3-5.5 V operating range allows direct connection to the USB input rail without a separate LDO. The XLP sleep mode drops quiescent current below 1 uA, preserving battery shelf life when the host is unplugged.
Recommended
Sensor Interface and IoT Edge Nodes
IoT edge nodes benefit from the PIC16F1575-I/SL's low-power sleep, 10-bit ADC for analog sensors, MSSP for SPI/I2C sensor buses, and EUSART for UART-linked radios. The Core Independent Peripherals (CIPs) allow sensor polling and threshold-triggered wake-up without CPU involvement, holding average current in the single-digit microamp range. The 14 KB Flash accommodates small TLS or LoRaWAN-style protocol stacks.
Recommended
Brushed DC Motor and Fan Control
The PIC16F1575-I/SL drives brushed DC motors and fans with closed-loop speed regulation. A 16-bit PWM sets the power-stage duty, the 10-bit ADC reads tachometer or back-EMF, and the 32 MHz core executes the PID loop in microseconds. The hardware CWG block generates complementary drive signals with programmable dead-time, reducing switching losses in half-bridge drivers. The 14-SOIC footprint fits inside the motor housing.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1575-I/SL β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1575T-I/SL | PIC16F1575-E/SL | PIC16F1574-I/SL | PIC16F1575-E/ST | PIC16F1574-I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | 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 | TSSOP-14 - different footprint | PDIP-14 - through-hole, different footprint |
| Flash Memory | 14 KB | 14 KB | 14 KB | 7 KB (-50 %) | 14 KB | 7 KB (-50 %) |
| RAM | 1024 B | 1024 B | 1024 B | 512 B (-50 %) | 1024 B | 512 B (-50 %) |
| Max CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| 16-bit PWM Channels | 4 | 4 | 4 | 4 | 4 | 4 |
| Operating Temperature | -40 to +85 C | -40 to +85 C | -40 to +125 C (Extended) | -40 to +85 C | -40 to +125 C (Extended) | -40 to +85 C |
| ADC | 10-bit, 8 ch | 10-bit, 8 ch | 10-bit, 8 ch | 10-bit, 8 ch | 10-bit, 8 ch | 10-bit, 8 ch |
Key Differentiators
- Four independent 16-bit PWMs in a 14-pin package (vs PIC16F1455-I/SL)
- Same-package Flash density upgrade path (vs PIC16F1574-I/SL)
- Industrial vs Extended temperature variants available (vs PIC16F1575-I/SL vs PIC16F1575-E/SL)
Design Notes
Place a 100 nF ceramic decoupling capacitor as close as possible to the VDD pin (pin 1) with a short trace to the VSS ground pour. Add a bulk 10 uF tantalum or ceramic near the MCU for switching transient support. The PIC16F1575's internal voltage regulator requires both capacitors within 5 mm of the package to keep VDD core ripple below 50 mVpp during PWM transitions.
The 14-SOIC package has a thermal pad requirement of roughly 1 square inch of copper pour on VDD/VSS layers to dissipate ~0.5 W under worst-case CPU+ADC+all-PWM operation. Route all PWM outputs away from analog ADC inputs to minimize digital crosstalk, and place a ground guard ring around the MCLR pin to suppress ESD coupling into the reset line. Keep traces under the package short - the SOIC lead inductance affects signal integrity above 50 MHz.
Do not leave the MCLR/RA3 pin floating. A 10 kohm pull-up to VDD is required for normal operation; without it, the part will randomly enter reset under noisy conditions. When using the internal oscillator, set the OSCCON and PLL configuration bits correctly - failing to enable the 4x PLL results in 8 MHz operation, halving PWM frequency and ADC throughput. Finally, never write to Flash while the ADC is sampling on the same bank; this can inject noise into the conversion.
Compliance Information
RoHS compliant and lead-free per Microchip product page; the SL package is MSL-1 rated. Not AEC-Q100 qualified - automotive customers should validate against the PIC16F1xxx automotive-grade roadmap.
