DSPIC33EP32GP502-I/SO - 16-Bit DSC 60MIPS 32KB Flash | Microchip
MPN: DSPIC33EP32GP502-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.62 | $3.62 |
| 10 | $3.35 | $33.50 |
| 100 | $3.05 | $305.00 |
| 500 | $2.85 | $1,425.00 |
| 1,000 | $2.65 | $2,650.00 |
DSPIC33EP32GP502-I/SO Overview
A digital signal controller combines the computational strengths of a digital signal processor (DSP) - single-cycle MAC, hardware divide, DSP instruction extensions - with the peripheral integration and ease of use of a microcontroller (MCU). DSCs occupy the middle of the embedded hierarchy between general-purpose MCUs and dedicated DSP ICs, making them a natural choice for real-time control loops and signal conditioning where deterministic interrupt latency matters more than raw throughput.
The dsPIC33EP32GP502 belongs to Microchip's dsPIC33EP general purpose (GP) family, which integrates CAN 2.0B communication, two on-chip operational amplifiers, three analog comparators, a Peripheral Trigger Generator (PTG), and a Charge Time Measurement Unit (CTMU). The 60 MIPS core executes from zero-wait-state Flash at 3.0V to 3.6V, and the high-speed PWM module with advanced analog peripherals supports precision mixed-signal designs.
Architecturally, the device uses a modified Harvard, 16-bit RISC core with a 24-bit instruction word, hardware DSP engine (40-bit wide accumulator, single-cycle MAC), and multiple interrupt vectors that keep latency deterministic. A 10-bit ADC with up to 10 channels plus the CTMU enable capacitive and resistive measurement, while the dual op amps offload external analog signal conditioning.
Typical applications include industrial motor control and power conversion, CAN-based automotive and industrial networking nodes, digital power supplies requiring high-speed PWM, and sensor systems leveraging the op amps and CTMU for direct analog front-end duties.
Design consideration: the 60 MIPS core is clocked from an external crystal or internal FRC with the on-chip PLL; budget PCB space for a primary oscillator and follow Microchip AN1078-type guidance for analog grounding when using the op amps and CTMU simultaneously.
This page synthesizes distributor pricing, same-family drop-in alternatives, pinout data, and practical design notes not found in the manufacturer product page, providing information gain over standard distributor listings.
Drop-in alternatives for DSPIC33EP32GP502-I/SO — 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 DSPIC33EP32GP502-I/SO (same form factor and footprint) — differing in Package, Operating Temperature, Core Architecture, Core Processor, Packaging.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP64GP502-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128GP502-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32MC502-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.66 / Unit
View Datasheet →DSPIC33EP64MC502-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MC502-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.29 / Unit
View Datasheet →DSPIC33EP32GP502-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33EP RISC with DSP extensions |
| Maximum CPU Speed | 60 MIPS (60 MHz core) |
| Flash Program Memory | 32 KB (10.7K x 24) |
| RAM | 4 KB |
| Operating Voltage | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial, I suffix) |
| Package | 28-pin SOIC (SO) |
| Mounting Type | Surface Mount |
| CAN | CAN 2.0B controller |
| Op Amps On-Chip | 2 |
| Comparators | 3 |
| ADC | 10-bit ADC, 1 module, up to 10 channels |
| CTMU | Charge Time Measurement Unit |
| PTG | Peripheral Trigger Generator |
| High-Speed PWM | Yes |
| Timers | Multiple 16-bit timers |
| RoHS Status | Compliant |
DSPIC33EP32GP502-I/SO Pin Configuration
| Pin 1 | MCLR — Master clear reset input, programming voltage |
| Pin 2 | AN0/VREF+/CN2/RB0 — Analog input 0 / positive voltage reference |
| Pin 3 | AN1/VREF-/CN3/RB1 — Analog input 1 / negative voltage reference |
| Pin 4 | AN2/SS1/CN4/RB2 — Analog input 2 / SPI slave select |
| Pin 5 | AN3/INDX/CN5/RB3 — Analog input 3 / QEI index |
| Pin 6 | AN4/QEA/IC7/CN6/RB4 — Analog input 4 / QEI phase A / input capture 7 |
| Pin 7 | VDD — Digital power supply (3.0V to 3.6V) |
| Pin 8 | VSS — Digital ground |
| Pin 9 | OSC1/CLKI/CN7/RA2 — Oscillator input / external clock input |
| Pin 10 | OSC2/CLKO/RC15 — Oscillator output / external clock output |
| Pin 11 | SOSCI/CN1/RB5 — Secondary oscillator input / remappable I/O |
| Pin 12 | VSS — Digital ground |
| Pin 13 | VDD — Digital power supply |
| Pin 14 | RP1 — Remappable peripheral pin (PGED functions available) |
| Pin 15 | RP2 — Remappable peripheral pin (PGEC functions available) |
| Pin 16 | RP3 — Remappable peripheral pin (PGED functions available) |
| Pin 17 | RP4 — Remappable peripheral pin (PGEC functions available) |
| Pin 18 | RP5 — Remappable peripheral pin |
| Pin 19 | AVSS — Analog ground |
| Pin 20 | AVDD — Analog power supply |
| Pin 21 | RP6 — Remappable peripheral pin |
| Pin 22 | RP7 — Remappable peripheral pin |
| Pin 23 | RP8 — Remappable peripheral pin |
| Pin 24 | RP9 — Remappable peripheral pin |
| Pin 25 | RP10 — Remappable peripheral pin |
| Pin 26 | RP11 — Remappable peripheral pin |
| Pin 27 | VSS — Digital ground |
| Pin 28 | VDD — Digital power supply |
Typical Applications
DSPIC33EP32GP502-I/SO is suitable for 6 applications: Digital Power Supplies, CAN Networking Nodes, Motor Control, Portable Instrumentation, Sensor Signal Conditioning, Industrial Automation Controllers.
Digital Power Supplies
The DSPIC33EP32GP502-I/SO fits digital power supply control because its 60 MIPS core executes current-loop compensation algorithms deterministically, and its high-speed PWM module provides the resolution needed for tight regulation. The three on-chip comparators support cycle-by-cycle overcurrent protection without external circuitry, and the 10-bit ADC samples feedback voltages synchronized to the PWM period to minimize conversion latency. Placed as the sole controller of a flyback, LLC, or buck stage, the DSC replaces discrete analog control loops with firmware-defined compensation; the main trade-off is firmware validation effort versus the plug-and-play simplicity of analog controllers, but the payoff is programmable soft-start, fault logging, and adaptive control across operating modes.
Recommended
CAN Networking Nodes
With an integrated CAN 2.0B controller, the DSPIC33EP32GP502-I/SO is a strong fit for industrial and vehicular CAN nodes that also need local analog processing. The on-chip CAN module handles message framing and filtering in hardware, offloading the 60 MIPS CPU for application code, while the two op amps and CTMU condition sensor signals locally before transmission on the bus. In a typical node, the DSC reads analog inputs through its 10-bit ADC, packages the data into CAN frames, and drives an external CAN transceiver such as the MCP2551 on pins 14-26 remapped to the C1TX/C1RX functions. Because CAN and the analog peripherals live on one die, board area and BOM count drop compared with MCU-plus-external-CAN-controller architectures.
Recommended
Motor Control
The DSPIC33EP32GP502-I/SO supports brushless DC and single-phase motor control with its high-speed PWM outputs and 60 MIPS DSP engine executing field-oriented or trapezoidal control loops. The three on-chip comparators enable sensorless zero-crossing detection directly on-chip, and the hardware MAC accelerates PI loop math beyond what same-class 16-bit MCUs achieve. For small appliance, fan, or pump designs on a 28-pin budget, the device drives a three-phase gate driver from remappable RPx pins while the ADC samples bus current via a shunt. Designers needing full complementary outputs with hardware dead time on many axes should consider the pin-compatible MC-family variant DSPIC33EP32MC502-I/SO, which shares this footprint and upgrades the PWM module.
Recommended
Portable Instrumentation
For battery-powered handheld instruments, the DSPIC33EP32GP502-I/SO integrates the analog front end that would otherwise occupy two or three external ICs: two op amps for signal amplification, three comparators for limit detection, and a CTMU for capacitive touch or precise time-charge measurements. The 3.0V to 3.6V single-supply operation matches a single Li-Ion cell through an LDO, and Idle/Doze modes let the 60 MIPS core sleep between acquisitions while the ADC and PTG run autonomously. Display, keypad, and USB-serial interfaces attach to the remappable RPx pins 14-26. The 32KB Flash accommodates firmware for measurement sequencing, calibration tables, and a UART or I2C host interface within the industrial -40C to +85C temperature envelope.
Recommended
Sensor Signal Conditioning
The dual on-chip op amps of the DSPIC33EP32GP502-I/SO amplify millivolt-level outputs from thermocouples, RTDs, bridge sensors, or current shunts directly on the die, cutting external component count and noise pickup on the PCB. The 10-bit ADC digitizes the conditioned signal, while the CTMU provides high-resolution capacitive or resistive measurement for level and touch sensing. In a typical chain, a sensor connects to an op-amp-configured gain stage whose output feeds an ANx ADC channel; the three comparators add fast threshold alarms independent of firmware latency. This single-chip analog-plus-control architecture suits industrial transmitters and condition-monitoring nodes where the 60 MIPS core also runs filtering, linearization, and 4-20 mA or CAN output stacks.
Recommended
Industrial Automation Controllers
Within factory automation panels, the DSPIC33EP32GP502-I/SO acts as a compact intelligent node combining 60 MIPS real-time control, CAN 2.0B fieldbus connectivity, and mixed-signal I/O in a 28-pin SOIC footprint. The PTG sequences peripheral operations autonomously - triggering ADC conversions, PWM updates, and comparator events without CPU intervention - which frees the core for protocol handling and supervisory logic. Typical deployments include valve controllers, conveyor position feedback, and small PLC expansion modules, where the industrial -40C to +85C rating and 3.0V to 3.6V robust operation meet panel environmental requirements. The 32KB Flash supports state machines, PID loops, and CAN stacks, while the E-temperature sibling in the same footprint covers harsher enclosures.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32GP502-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP64GP502-I/SO | DSPIC33EP128GP502-I/SO | DSPIC33EP32MC502-I/SO | DSPIC33EP64MC502-I/SO | DSPIC33EP128MC502-I/SO |
|---|---|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS |
| Flash Memory | 32 KB | 64 KB | 128 KB | 32 KB | 64 KB | 128 KB |
| CAN 2.0B | Yes | Yes | Yes | Yes | Yes | Yes |
| PWM Emphasis | High-speed PWM (GP balance) | High-speed PWM (GP balance) | High-speed PWM (GP balance) | Motor-control PWM (complementary outputs) | Motor-control PWM (complementary outputs) | Motor-control PWM (complementary outputs) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Optimized cost/memory point in family (vs DSPIC33EP64GP502-I/SO)
- General-purpose analog balance with CAN (vs DSPIC33EP32MC502-I/SO)
- Upgrade headroom without PCB change (vs DSPIC33EP128GP502-I/SO)
Design Notes
Supply the digital VDD pins (7, 13, 28) from a clean 3.3V LDO with a 0.1uF ceramic decoupling capacitor at each pin, plus a 10uF bulk capacitor. Power AVDD (pin 20) from the same rail through an RC filter (for example 10 ohm + 1uF) or ferrite bead to isolate op-amp, comparator, and ADC analog performance from digital switching noise. Estimated: at 60 MIPS with typical active current figures from the family datasheet, dissipation remains well under 200 mW, so no heatsinking is needed in the 28-SOIC.
Keep the analog ground (AVSS, pin 19) return path separate from high-current digital switching until a single-point ground tie. Place the primary crystal on pins 9-10 as close to the device as possible with short, symmetric traces and guard with ground. Remappable RPx pins (14-26) should be assigned before layout since PPS (Peripheral Pin Select) configuration fixes which peripheral drives each physical pin; reserve pin 14/16 for PGED programming access and pin 15/17 for PGEC so in-circuit debugging via ICSP remains possible.
Do not exceed the 3.6V maximum supply; the dsPIC33EP family is not 5V tolerant on I/O. Remember that MCLR (pin 1) needs a pull-up resistor (approximately 10 kohm) and a series resistor (approximately 100 ohm to 470 ohm) when used with ICSP programmers to prevent accidental erasure during programming. Peripheral Pin Select mapping must be locked (written with unlock sequence) at startup, otherwise peripherals silently fail to appear on pins. Verify configuration words (oscillator selection, watchdog) match the target clock hardware before first power-up.
Compliance Information
RoHS compliant per Microchip product listings on DigiKey/LCSC. Microchip standard products are lead-free; REACH and halogen-free status should be confirmed on the Microchip product page environmental data.
