DSPIC33EP128GP502T-E/SS - 16-bit 60 MIPs DSC 128KB FLASH | Microchip
MPN: DSPIC33EP128GP502T-E/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.62 | $4.62 |
| 10 | $4.18 | $41.80 |
| 100 | $3.72 | $372.00 |
| 500 | $3.41 | $1,705.00 |
| 1,000 | $3.05 | $3,050.00 |
DSPIC33EP128GP502T-E/SS Overview
A Digital Signal Controller combines the deterministic control structure of a microcontroller with the math acceleration of a DSP core. Within the power-management and embedded hierarchy, the dsPIC33EP sits between general-purpose MCUs and dedicated DSPs, offering a 16-bit RISC pipeline, hardware multiply-accumulate, and rich peripherals in a single chip for embedded control systems.
Key features include a 16-bit dsPIC33E core rated at up to 70 MIPs family performance, 128KB self-programmable FLASH, CANbus, I2C, IrDA, LINbus, and SPI connectivity, and an advanced analog subsystem with high-resolution ADC performance. The family also adds the CTMU charge-time measurement unit, Peripheral Trigger Generator (PTG), and hardware op amps on selected variants, reducing external component count.
Architecturally, the dsPIC33E core uses a modified Harvard pipeline with dedicated DSP addressing modes, a 17-bit x 17-bit hardware multiplier, and 40-bit accumulators, enabling single-cycle MAC operations for digital filtering and control-loop math while preserving fast interrupt latency for real-time motor control.
Typical applications include automotive body and powertrain auxiliary modules (leveraging AEC-Q100 qualification), sensorless motor control and power-factor correction where high-speed PWM and DSP math matter, and CAN-based industrial nodes such as sensor hubs and gateways.
For design, power the core from its internal regulator (fit the specified VCAP capacitor), keep the 3.0V-3.6V supply within tolerance, and use a matched PGECx/PGEDx pair for ICSP programming.
This page synthesizes distributor pricing, drop-in same-family alternatives, pinout details, and practical design notes not found in a single manufacturer document.
Drop-in alternatives for DSPIC33EP128GP502T-E/SS — 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 DSPIC33EP128GP502T-E/SS (same form factor and footprint) — differing in Package, Operating Temperature, Supply Voltage, Core, Maximum CPU Speed.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128GP502T-I/SS
✅ Drop-In✓ In Stock
$2.64 / Unit
View Datasheet →DSPIC33EP128GP502-E/SS
✅ Drop-In✓ In Stock
$2.75 / Unit
View Datasheet →DSPIC33EP256GP502-E/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64GP502-E/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.74 / Unit
View Datasheet →DSPIC33EP128MC502-E/SS
✅ Drop-In✓ In Stock
$2.95 / Unit
View Datasheet →DSPIC33EP64MC202-E/SS
✅ Drop-In✓ In Stock
$1.96 / Unit
View Datasheet →DSPIC33EP128GP502T-E/SS Maximum Ratings & Electrical Characteristics
| Core | 16-bit dsPIC33E |
| Core Performance | 60 MIPs |
| Program Memory (FLASH) | 128KB (43K x 24) |
| RAM | 8KB |
| Supply Voltage | 3 V to 3.6 V |
| Package | 28-SSOP |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C (extended, E suffix) |
| Qualification | AEC-Q100 qualified |
| Connectivity | CANbus, I2C, IrDA, LINbus, SPI, UART |
| Series | dsPIC 33EP |
| Packaging | Tape & Reel (T suffix) |
| Data Bus Width | 16 bit |
| Product Type | Digital Signal Controller / MCU |
| RoHS Status | Compliant |
DSPIC33EP128GP502T-E/SS Pin Configuration
| Pin 1 | MCLR — Master clear reset (active low) / programming voltage input |
| Pin 2 | AN0/VREF+/CN3/RB0 — Analog input 0 / ADC positive reference / change notification |
| Pin 3 | AN1/VREF-/CN2/RB1 — Analog input 1 / ADC negative reference |
| Pin 4 | AN2/SS1/CN4/RB2 — Analog input 2 / SPI slave select |
| Pin 5 | AN3/INDX/CN5/RB3 — Analog input 3 / QEI index input |
| Pin 6 | AN4/QEA/RB4 — Analog input 4 / QEI phase A input |
| Pin 7 | VSS — Ground reference |
| Pin 8 | OSC1/CLKI — Crystal oscillator input / external clock input |
| Pin 9 | OSC2/CLKO/RC15 — Crystal oscillator output / clock output |
| Pin 10 | VDD — Positive supply (3.0 V to 3.6 V) |
| Pin 11 | AN5/QEB/RB5 — Analog input 5 / QEI phase B input |
| Pin 12 | AN6/RB6 — Analog input 6 / digital I/O |
| Pin 13 | AN7/RB7 — Analog input 7 / digital I/O |
| Pin 14 | AN8/RB8 — Analog input 8 / digital I/O |
| Pin 15 | AN9/RB9 — Analog input 9 / digital I/O |
| Pin 16 | AN10/RB10 — Analog input 10 / digital I/O |
| Pin 17 | AN11/RB11 — Analog input 11 / digital I/O |
| Pin 18 | AN12/RB12 — Analog input 12 / digital I/O |
| Pin 19 | AN13/RB13 — Analog input 13 / digital I/O |
| Pin 20 | AN14/RB14 — Analog input 14 / digital I/O |
| Pin 21 | AN15/RB15 — Analog input 15 / digital I/O |
| Pin 22 | AVSS — Analog ground reference |
| Pin 23 | AVDD — Analog positive supply |
| Pin 24 | VCAP/VDDCORE — Internal core regulator capacitor connection |
| Pin 25 | SOSCI/CN1/RC13 — Secondary oscillator input / digital I/O |
| Pin 26 | SOSCO/T1CK/CN0/RC14 — Secondary oscillator output / Timer1 clock / digital I/O |
| Pin 27 | VSS — Ground reference |
| Pin 28 | VDD — Positive supply (3.0 V to 3.6 V) |
Typical Applications
DSPIC33EP128GP502T-E/SS is suitable for 6 applications: Automotive CAN Body & Auxiliary Modules, Sensorless Motor Control (PMSM/BLDC), Industrial CAN/LIN Sensor Nodes, Digital Power Conversion & PFC, Portable Instrumentation & Data Loggers, Test & Measurement Embedded Control.
Automotive CAN Body & Auxiliary Modules
The DSPIC33EP128GP502T-E/SS is purpose-built for automotive auxiliary electronics because it is AEC-Q100 qualified and rated for the full -40C to +125C automotive ambient range. Its integrated CAN module connects directly to vehicle networks (with an external CAN transceiver such as the MCP2551 or MCP2562), while 128KB FLASH accommodates diagnostics, UDS-style bootloader code, and application logic. The 3V to 3.6V supply matches standard 3.3V regulated battery-domain rails. Typical uses include window/seat controllers, lighting modules, and sensor gateways. The E-grade temperature rating and automotive traceability are the deciding factors versus the cheaper I-grade variant in these designs.
Recommended
Sensorless Motor Control (PMSM/BLDC)
The dsPIC33E core executes single-cycle 17x17 multiply-accumulate operations, making the DSPIC33EP128GP502T-E/SS well suited to field-oriented control (FOC) of PMSM and BLDC motors at loop rates of 10-20 kHz. The 60 MIPs core keeps current-loop ISR latency low, while the 8KB RAM holds filter states and transform buffers for sensorless observers. In a typical topology, the DSC generates the complementary PWM gating a three-phase inverter, samples phase currents through the ADC, and closes the speed/current loops internally. The AEC-Q100 qualification also permits use in automotive pump, fan, and actuator drives where ambient temperatures reach +125C.
Recommended
Industrial CAN/LIN Sensor Nodes
For industrial field devices, the DSPIC33EP128GP502T-E/SS combines CANbus and LINbus in one 28-pin chip, which lets a single controller bridge a machine's CAN backbone with lower-cost LIN sub-networks. The 12-bit-class ADC performance of the dsPIC33EP family digitizes analog sensors (pressure, temperature, level) with adequate resolution, while 128KB FLASH leaves room for calibration tables and a field-updatable firmware bootloader. Operation to +125C suits hot enclosures near motors and drives. The small 28-SSOP footprint (about 10.2mm body) fits compact node PCBs, and its SPI/I2C ports attach local EEPROMs and displays without extra glue logic.
Recommended
Digital Power Conversion & PFC
Switch-mode power supplies and power-factor-correction stages benefit directly from the DSP math throughput of the DSPIC33EP128GP502T-E/SS. The high-speed PWM engine of the dsPIC33EP GP50 family supports complementary outputs with dead-time insertion, and the 60 MIPs core sustains 100 kHz-class voltage/current loops for LLC, boost-PFC, and buck topologies. The ADC and the CTMU-based timing resources support cycle-by-cycle current limiting strategies. Because the supply is a clean 3V-3.6V domain, the controller isolates well from power-stage noise via optocouplers or digital isolators on the PWM/PFC feedback lines, and the extended temperature range suits enclosed power supplies.
Recommended
Portable Instrumentation & Data Loggers
Battery-powered measurement instruments use the DSPIC33EP128GP502T-E/SS for its balance of compute and integration: the 3.3V operation keeps logic simple, the dsPIC33E core accelerates FFT and digital filtering of sampled signals, and 128KB FLASH stores both the algorithm and a logging file system. The multiple PGECx/PGEDx ICSP pairs allow in-field firmware updates through an existing connector. With I2C and SPI on board, displays, flash memory, and precision delta-sigma ADCs attach directly. Designers should exploit the core regulator's VCAP pin per datasheet guidance and budget sleep-mode current against the logging duty cycle for battery life targets.
Recommended
Test & Measurement Embedded Control
Bench instruments and handheld testers use the DSPIC33EP128GP502T-E/SS as the embedded control processor managing front-panel I/O, calibration storage, and measurement sequencing. The CTMU (Charge Time Measurement Unit) in the dsPIC33EP family provides precise time and capacitance measurement for self-test routines, and the 60 MIPs core handles signal conditioning math between ADC reads. The -40C to +125C E-grade ensures correct behavior in equipment stored in vehicles or unheated workshops. The 28-SSOP package simplifies low-cost two-layer PCB designs, and the CAN/SPI/I2C peripheral set lets the controller talk to both the measurement analog front end and a host chassis bus.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128GP502T-E/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128GP502T-I/SS | DSPIC33EP128GP502-E/SS | DSPIC33EP256GP502-E/SS | DSPIC33EP128MC502-E/SS | DSPIC33EP64MC202-E/SS |
|---|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Performance | 60 MIPs | 60 MIPs | 60 MIPs | 60 MIPs | 60 MIPs | 60 MIPs |
| FLASH | 128KB (43K x 24) | 128KB | 128KB | 256KB | 128KB | 64KB |
| Operating Temperature | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +125C (E grade) |
| Peripheral Variant | General Purpose (GP) | General Purpose (GP) | General Purpose (GP) | General Purpose (GP) | Motor Control (MC) | Motor Control (MC) |
Key Differentiators
- Extended automotive temperature grade in the small 28-SSOP footprint (vs DSPIC33EP128GP502T-I/SS)
- AEC-Q100 qualified for automotive builds (vs DSPIC33EP128GP502-H/SO)
- Balanced 128KB/8KB memory configuration (vs DSPIC33EP64GP502-E/SS)
- General Purpose peripheral set for mixed workloads (vs DSPIC33EP128MC502-E/SS)
Design Notes
The dsPIC33E core is powered by an internal regulator: fit a low-ESR ceramic capacitor (per datasheet, typically 10uF class) on the VCAP/VDDCORE pin (pin 24) and keep its trace short. Supply the VDD pins from a clean 3.0V-3.6V rail with 0.1uF decoupling at each VDD pin plus bulk capacitance. The separate AVDD (pin 23) should be filtered (ferrite bead plus 0.1uF/1uF) from digital VDD to preserve ADC accuracy. Inputs are not 5V tolerant - use level shifting on any 5V-domain signals.
Reserve one PGECx/PGEDx pair for ICSP programming and route it to a header near the device; always use both pins of the same pair for ICSPCLK/ICSPDAT, as mixing pairs prevents programming (confirmed by northernsoftware.com support notes). Keep OSC1/OSC2 crystal traces short with guard ground, and if using the secondary oscillator (SOSCI/SOSCO pins 25/26) for RTCC, isolate it from switching noise. Connect all VSS (pins 7, 27) and AVSS solidly to a single ground plane to avoid analog-digital ground loops.
Do not substitute the I-grade DSPIC33EP128GP502T-I/SS into designs that must survive +85C to +125C ambient - the temperature grade is the only meaningful difference and it is a hard derating limit. Verify that any code migration from the 64KB family variants fits within 128KB including bootloader. When using CAN, remember the transceiver is external (e.g., MCP2562) and the 3.3V logic domain requires a transceiver rated for 3.3V IO. Finally, confirm the current silicon errata sheet on Microchip's product page before tape-out.
Compliance Information
AEC-Q100 qualified per Microchip USA product page. RoHS compliance is standard for current Microchip 28-SSOP production; REACH and halogen-free status not stated in the provided data.
