DSPIC33EP32GP502T-I/SO - 16-bit 70 MIPS DSC, 32KB Flash | Microchip
MPN: DSPIC33EP32GP502T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.99 | $2.99 |
| 10 | $2.75 | $27.50 |
| 100 | $2.55 | $255.00 |
| 500 | $2.35 | $1,175.00 |
| 1,000 | $2.2 | $2,200.00 |
DSPIC33EP32GP502T-I/SO Overview
A digital signal controller combines the computational architecture of a digital signal processor (DSP) with the peripheral set and ease of use of a microcontroller (MCU). Within the power-management hierarchy of embedded systems, the DSC sits between general-purpose MCUs and dedicated DSPs, offering single-cycle MAC and DSP instructions alongside mainstream control peripherals, making the dsPIC33E family a bridge between control and signal processing.
Key features include the dsPIC33E general purpose (GP) family core with 70 MIPS maximum speed, an on-chip CAN 2.0B controller for robust networked communication, two integrated operational amplifiers and three analog comparators that reduce external component count in analog front ends, a Peripheral Trigger Generator (PTG) for autonomous task scheduling, and a Charge Time Measurement Unit (CTMU) for capacitive touch and time-domain measurements. Four DMA channels offload data movement, and five timers support complex timing architectures.
Architecturally, the device uses an enhanced 16-bit core with DSP engine, hardware loops, and modified Harvard bus structure. The GP family emphasizes superior ADC performance and code density, enabling single-chip solutions for control loops with concurrent signal processing.
Typical applications include motor control and digital power supplies exploiting the DSP engine and comparators, CAN-based industrial automation nodes, and sensor conditioning systems leveraging the on-chip op amps and CTMU.
When designing, plan the 28-pin budget carefully: the GP502 multiplexes CAN, UART, SPI, and I2C functions onto remappable RP pins, so early pin mapping in MPLAB X Code Configurator prevents conflicts.
This page synthesizes distributor pricing, drop-in alternatives, pin-compatibility guidance, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP32GP502T-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 DSPIC33EP32GP502T-I/SO (same form factor and footprint) — differing in Package, Packaging, Core Processor, Operating Temperature, Peripheral Trigger Generator.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP32GP502T-E/SO
✅ Drop-In✓ In Stock
$3.42 / Unit
View Datasheet →DSPIC33EP32GP502-I/SO
✅ Drop-In✓ In Stock
$2.65 / Unit
View Datasheet →DSPIC33EP64GP502-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128GP502-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32MC202-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.46 / Unit
View Datasheet →DSPIC33EP32GP502-H/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.89 / Unit
View Datasheet →DSPIC33EP32GP502T-I/SO Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E 16-bit DSC core |
| CPU Speed | 70 MIPS (60 MHz max clock reported by some listings) |
| Program Memory (FLASH) | 32KB (10.7K x 24) |
| RAM | 4KB |
| Package | 28-SOIC (SOIC-28, 7.50mm width) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (I grade, industrial) |
| CAN Controller | CAN 2.0B |
| Integrated Op Amps | 2 |
| Comparators | 3 |
| Peripheral Trigger Generator | Yes (PTG) |
| CTMU | Yes (Charge Time Measurement Unit) |
| DMA Channels | 4 |
| Timers | 5 |
| Packaging | Tape & Reel (T suffix) |
| RoHS Status | Compliant |
DSPIC33EP32GP502T-I/SO 28-soic (soic-28, 7.50mm width) Pin Configuration Guide
Pin configuration for DSPIC33EP32GP502T-I/SO (28-soic (soic-28, 7.50mm width) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for DSPIC33EP32GP502T-I/SO.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP32GP502T-I/SO is suitable for 6 applications: CAN-Based Industrial Automation Nodes, Sensor Signal Conditioning Front Ends, Digital Power Supplies and Converters, Portable and Battery-Powered Instrumentation, Building Automation and Lighting Control, General-Purpose Embedded Control with DSP Tasks.
CAN-Based Industrial Automation Nodes
The integrated CAN 2.0B controller makes the DSPIC33EP32GP502T-I/SO a natural fit for industrial fieldbus nodes such as sensor hubs, actuator controllers, and factory automation slave devices. At 70 MIPS, the core executes the control loop and CAN message handling concurrently, while the four DMA channels move CAN frames and ADC results without CPU intervention. The remappable RP pin architecture lets designers place CAN TX/RX, UART, and SPI wherever board routing demands within the 28-pin budget. Using the device as a single-chip CAN node replaces an MCU-plus-CAN-IC two-chip solution, cutting BOM cost and board area. The industrial -40C to +85C rating covers typical factory-floor enclosures; for unventilated cabinets exceeding 85C, qualify the E-grade variant instead.
Recommended
Sensor Signal Conditioning Front Ends
The two on-chip operational amplifiers and three comparators allow the DSPIC33EP32GP502T-I/SO to condition sensor signals without external op-amp ICs. Wheatstone bridge outputs from pressure or load-cell sensors can be gained up by the internal op amps and fed directly to the ADC, while comparators with programmable references provide fast over-range or threshold alarms independent of software. The CTMU adds time-domain charge measurement for capacitive sensing and precise ratiometric measurements. The 70 MIPS DSP engine then applies digital filtering - IIR notch or FIR averaging - on the digitized data. This integration shrinks analog front-end BOM count substantially, and the DSP MAC capability keeps filter execution deterministic even while servicing communication tasks.
Recommended
Digital Power Supplies and Converters
The GP502's Peripheral Trigger Generator (PTG) sequences ADC sampling and control-loop execution autonomously, a critical requirement for voltage-mode and current-mode digital power loops where sampling must be tightly synchronized to the switching period. At 70 MIPS, the DSP engine executes proportional-integral control loops with single-cycle multiply-accumulate, achieving loop bandwidths adequate for AC-DC and DC-DC converter control. Three comparators support hardware cycle-by-cycle current limiting independent of firmware latency. The 28-SOIC footprint suits compact auxiliary and bias supplies, LED driver stages, and telecom rectifier supervision. Combine with a gate-driver IC to close the loop; the CAN interface enables PMBus-style digital supervision of the power system.
Recommended
Portable and Battery-Powered Instrumentation
The DSPIC33EP32GP502T-I/SO supports the dsPIC33E family's low-power modes including Idle and Doze, allowing the 70 MIPS core to scale down clock rate dynamically between measurement bursts - essential for battery-powered handheld meters, data loggers, and portable test instruments. The 32KB FLASH accommodates calibration tables, a command interface, and DSP filtering routines without external memory, and 4KB RAM buffers sampled waveform data. The integrated op amps amplify small transducer signals, and the CTMU performs precise charge-based measurements used in conductivity and touch interfaces. The industrial temperature rating and RoHS-compliant SOIC-28 package support both handheld and wall-powered instrument designs with a single-footprint BOM.
Recommended
Building Automation and Lighting Control
Building control nodes need robust networking plus analog sensing - exactly the GP502's mix of CAN 2.0B, op amps, comparators, and CTMU. The device can serve as a CAN-connected occupancy or daylight sensor head: op amps amplify photodiode or PIR signals, comparators generate interrupt-driven thresholds to wake the core from Idle, and CAN reports status to the building controller. Five timers support PWM dimming outputs and timekeeping. The 28-pin budget leaves remappable pins for UART links to gateway modules and SPI to local displays. Because one die covers analog front end, control, and networking, luminaire and damper-actuator designs gain board-area savings and a single firmware maintenance point across product variants.
Recommended
General-Purpose Embedded Control with DSP Tasks
For products that combine conventional embedded control - state machines, protocol handling, HMI - with genuine signal processing such as audio analysis, vibration monitoring, or FFT-based diagnostics, the dsPIC33E core provides a single-chip answer. The 70 MIPS core executes DSP library functions (FIR, IIR, FFT from Microchip's DSP library) while retaining deterministic interrupt latency for control tasks. The PTG offloads repetitive trigger-and-sample sequences from software. Compared with an MCU-plus-DSP two-chip architecture, the GP502 halves board area and eliminates inter-chip communication firmware. The 28-SOIC is hand-solderable for prototyping and fits standard pick-and-place lines for production, with the tape-and-reel T variant optimizing assembly costs above roughly 3,000 units per reel.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32GP502T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP32GP502T-E/SO | DSPIC33EP32GP502-I/SO | DSPIC33EP64GP502-I/SO | DSPIC33EP32MC202-I/SO |
|---|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| FLASH Memory | 32KB | 32KB | 32KB | 64KB | 32KB |
| Operating Temperature | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +85C |
| CAN 2.0B | Yes | Yes | Yes | Yes | No (motor control variant) |
| Integrated Op Amps / Comparators | 2 / 3 | 2 / 3 | 2 / 3 | 2 / 3 | 0 / comparators (MC peripherals instead) |
| Key Special Peripherals | PTG, CTMU, 4 DMA, 5 timers | PTG, CTMU, DMA | PTG, CTMU, DMA | PTG, CTMU, DMA | High-speed motor-control PWM |
Key Differentiators
- Integrated analog signal chain (2 op amps, 3 comparators, CTMU) (vs DSPIC33EP32MC202-I/SO)
- In-place FLASH upgrade path (vs DSPIC33EP128GP502-I/SO)
- Trade-off: standard industrial temperature only (vs DSPIC33EP32GP502T-E/SO)
Design Notes
The dsPIC33EP series uses an internal 1.8V core regulator; pin 14 (VCAP/VDDCORE) must be connected to a low-ESR capacitor to ground per the family datasheet - typically a ceramic capacitor in the 10uF range with an optional 0.1uF in parallel. Do not connect VCAP to any other supply. Budget the VDD rail (3.0V-3.6V range typical) with a 0.1uF decoupling capacitor at each VDD pin placed within 2mm of the pin. Verify the exact VDD range and VCAP capacitance from the family datasheet before production release.
The 28-SOIC (7.50mm body) requires a standard SOIC-28 land pattern; the T (tape-and-reel) and tube versions share the identical footprint, so both sourcing options fit the same PCB. Reserve the MCLR, PGD, and PGC pins (pins 1, 12, 13) for a 5-pin ICSP header footprint - even a 2x1 pad set - because in-circuit debugging and field firmware updates depend on it. Keep the ICSP traces short and add a 10k pull-up on MCLR with the programming connector's isolation resistor to avoid contention with external reset drivers.
The GP502 multiplexes all peripherals onto remappable RP pins, and it is easy to assign two peripherals to the same pin inadvertently. Always perform pin mapping in MPLAB X Code Configurator, which flags conflicts, before freezing the schematic. Second, note the packaging variant distinction: this part is tape-and-reel (T); ordering the non-T tube version is fine for prototyping but check your assembler's tray requirements for production. Finally, confirm the temperature grade in your BOM - the E-grade sibling has the same footprint but different thermal ratings.
Compliance Information
RoHS compliant and lead-free per distributor listings (DigiKey, LCSC). Formal REACH, halogen-free, and conflict-minerals declarations should be obtained from Microchip compliance documentation; not stated in provided data.
