DSPIC33EP32GP502-I/SO Microchip dsPIC33EP 16-Bit Digital Signal Controller 70MIPS 32KB Flash Advanced PWM SOIC-28

DSPIC33EP32GP502-I/SO Product Overview

The DSPIC33EP32GP502-I/SO from Microchip is a high-performance 16-bit Digital Signal Controller (DSC) in a 28-lead wide-body SOIC package, designed for cost-sensitive embedded applications requiring efficient digital signal processing, advanced power conversion control, and a compact footprint. Based on the dsPIC33E core running at 70 MIPS, the DSPIC33EP32GP502-I/SO features 32KB of Flash and 4KB of SRAM, smoothly handling digital filtering, PID loops, and digital power conversion algorithms. The DSPIC33EP32GP502-I/SO's core peripherals include an advanced high-speed PWM module (up to four independent outputs configurable as complementary pairs), a 10-bit high-speed ADC (up to 1.1 Msps with up to six analog input channels), two analog comparators, and UART, SPI, I2C interfaces. Operating from 3.0V to 3.6V with an industrial temperature range of -40°C to +85°C, the DSPIC33EP32GP502-I/SO's SOIC-28 package balances manual soldering convenience with a compact PCB footprint, making the DSPIC33EP32GP502-I/SO ideal for small-form-factor power supplies, industrial sensors, general-purpose motor control, and embedded systems requiring DSP performance.

DSPIC33EP32GP502-I/SO Core Features

Processor Core: The DSPIC33EP32GP502-I/SO features a 16-bit dsPIC33E core, 70 MIPS, with DSP-enhanced instruction set (single-cycle MAC)

Program Memory: The DSPIC33EP32GP502-I/SO provides 32KB Flash, In-Circuit Self-Programmable

Data Memory: The DSPIC33EP32GP502-I/SO includes 4KB SRAM, providing ample space for real-time algorithms and data buffering

Advanced PWM Module: The DSPIC33EP32GP502-I/SO offers up to 4 independent PWM outputs (configurable as complementary pairs) with programmable dead-time and fault protection for power conversion and motor drives

High-Speed ADC: The DSPIC33EP32GP502-I/SO integrates a 10-bit ADC up to 1.1 Msps with up to 6 analog input channels

Integrated Analog Peripherals: The DSPIC33EP32GP502-I/SO provides 2 analog comparators (with programmable reference) for overcurrent protection or peak current control

Communication Interfaces: The DSPIC33EP32GP502-I/SO supports 1x UART, 1x SPI, 1x I2C

Signal Processing & Timers: The DSPIC33EP32GP502-I/SO features input capture, output compare/standard PWM, and multiple 16/32-bit timers

Safety & System Management: The DSPIC33EP32GP502-I/SO includes a hardware CRC engine, watchdog timer, BOR/POR

Power Supply: The DSPIC33EP32GP502-I/SO operates from a 3.0V to 3.6V single supply with on-chip voltage regulator

Package: The DSPIC33EP32GP502-I/SO comes in a SOIC-28 (wide body 7.50mm), industrial temperature range -40°C to +85°C

DSPIC33EP32GP502-I/SO Applications

Digital Power & Converters: The DSPIC33EP32GP502-I/SO is ideal for small DC/DC converters, LED drivers, battery chargers, digital power controllers

General Motor Control: The DSPIC33EP32GP502-I/SO can be used in small BLDC motors, stepper motors, fan and pump drives

Industrial Sensors & Transmitters: The DSPIC33EP32GP502-I/SO is suitable for 4-20mA transmitters, temperature controllers, pressure sensors

Consumer Electronics: The DSPIC33EP32GP502-I/SO serves high-end appliance controllers, power tools, smart lighting

Automotive Accessories: The DSPIC33EP32GP502-I/SO handles in-cabin sensor interfaces, small actuators, LED lighting control

IoT Edge Nodes: The DSPIC33EP32GP502-I/SO is designed into compact data acquisition terminals requiring real-time signal processing

DSPIC33EP32GP502-I/SO Key Advantages

70 MIPS Efficient DSP Performance: The DSPIC33EP32GP502-I/SO's dsPIC33E core with single-cycle MAC efficiently executes digital filtering, PID control, and digital power loop algorithms

Flexible Advanced PWM: The DSPIC33EP32GP502-I/SO's PWM module generates up to 4 independent PWMs configurable as complementary outputs with dead-time and fault protection, easily handling power conversion, motor drives, and general power control

Compact Manufacturing-Friendly Package: The 28-lead SOIC package of the DSPIC33EP32GP502-I/SO facilitates manual soldering and automated production, combining a small footprint with ease of use for space- and cost-constrained designs

Fast 10-bit ADC: The 1.1 Msps ADC of the DSPIC33EP32GP502-I/SO quickly responds to current, voltage, and sensor signal changes for real-time control

Rich Analog Integration: Two on-chip analog comparators on the DSPIC33EP32GP502-I/SO enable fast overcurrent protection or peak current-mode control, significantly reducing external component count

Industrial Temperature Range: The DSPIC33EP32GP502-I/SO operates reliably from -40°C to +85°C in harsh environments

Mature Development Toolchain: Free MPLAB X IDE and MPLAB XC16 compiler, with MPLAB Code Configurator (MCC) and extensive algorithm libraries, accelerate time-to-market for the DSPIC33EP32GP502-I/SO

Long-Term Availability: The DSPIC33EP32GP502-I/SO is a mature dsPIC33E family product with long lifecycle and stable supply commitment

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FAQ

1. What is the DSPIC33EP32GP502-I/SO?
   The DSPIC33EP32GP502-I/SO is a 16-bit Digital Signal Controller (DSC) from Microchip in a 28-lead SOIC package, running at 70 MIPS with 32KB Flash, 4KB SRAM, integrated advanced PWM, 10-bit fast ADC, and analog comparators—ideal for digital power, general motor control, and industrial sensors.
2. What does the “-I/SO” suffix mean?
   “-I” indicates the industrial temperature range (-40°C to +85°C) of the DSPIC33EP32GP502-I/SO, and “/SO” denotes the 28-lead wide-body SOIC package.
3. How does it differ from the dsPIC33CK family?
   The DSPIC33EP32GP502-I/SO belongs to the dsPIC33EP family based on the mature dsPIC33E core running at up to 70 MIPS, while the dsPIC33CK is the next-generation platform offering up to 100 MIPS, richer peripherals, and CAN-FD support. The DSPIC33EP32GP502-I/SO delivers excellent cost-effectiveness for applications not requiring the latest high-end features.
4. Does it have CAN or CAN-FD?
   No. The DSPIC33EP32GP502-I/SO is a general-purpose (GP) model without an integrated CAN controller. For CAN connectivity, consider dsPIC33EP MC variants with CAN, or add an external SPI CAN controller to the DSPIC33EP32GP502-I/SO.
5. What can the advanced PWM do?
   The advanced PWM of the DSPIC33EP32GP502-I/SO can generate up to 4 independent PWM outputs or 2 complementary pairs with dead-time control, making it well-suited for DC/DC converters, LED drivers, BLDC six-step commutation, and power management applications requiring precise duty-cycle control.
6. Is the 10-bit ADC suitable for current sensing?
   With a 1.1 Msps sampling rate and 10-bit resolution, the ADC of the DSPIC33EP32GP502-I/SO meets real-time control requirements for low-to-medium power applications. For high-precision current sensing, Microchip’s dsPIC33CK family offers 12-bit high-speed ADCs.
7. What development tools are supported?
   Microchip’s free MPLAB X IDE and MPLAB XC16 compiler are used, along with PICkit or ICD series debuggers and MPLAB Code Configurator (MCC), all fully supporting the DSPIC33EP32GP502-I/SO for rapid development.
8. Does it have an internal oscillator, or is an external crystal required?
   The DSPIC33EP32GP502-I/SO features an internal high-speed RC oscillator with an on-chip PLL; no external crystal is needed. An external crystal or resonator can be used with the DSPIC33EP32GP502-I/SO if higher clock precision is required.
9. Are 32KB Flash and 4KB SRAM sufficient?
   For digital power control, general motor drives, sensor signal processing, and most small embedded control algorithms, the 32KB Flash and 4KB SRAM of the DSPIC33EP32GP502-I/SO provide ample space. Higher-memory variants are available in the same family if needed.
10. Is the DSPIC33EP32GP502 suitable for new designs?
    The DSPIC33EP32GP502-I/SO is a mature, widely used DSC that offers excellent cost-effectiveness. For new cost-sensitive designs that do not require the latest high-speed communication peripherals, the DSPIC33EP32GP502-I/SO remains a very reliable choice with Microchip’s long-term availability commitment.