DSPIC33EP128GP502-E/SS - 16-bit DSC 60 MIPS 128KB Flash | Microchip
MPN: DSPIC33EP128GP502-E/SS β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.2 | $5.20 |
| 10 | $4.55 | $45.50 |
| 100 | $3.85 | $385.00 |
| 500 | $3.15 | $1,575.00 |
| 1,000 | $2.75 | $2,750.00 |
DSPIC33EP128GP502-E/SS Overview
A Digital Signal Controller combines the peripheral set and familiar programming model of a microcontroller with the multiply-accumulate (MAC) DSP engine of a digital signal processor. In the embedded hierarchy, the dsPIC33E family sits between general-purpose MCUs and dedicated DSPs, making it a natural choice when a control loop must also execute real-time math such as PI regulation, filtering, or transforms within a single interrupt service routine.
Key features include the dsPIC33E core running at up to 60 MIPS (equivalent to 60 MHz on the two-cycle instruction pipeline), 128 KB (43K x 24 instruction words) of self-programming Flash, and the GP50-series peripheral suite: high-speed PWM modules with complementary outputs and dead-time control, on-chip op amps and advanced analog, multiple UART/SPI/I2C ports, DMA, and a 10/12-bit ADC. I/O pins sink or source 15 mA (22 mA on high-drive pins) and many are 5V-tolerant, easing interface designs in 5V-tolerant industrial environments.
Architecturally, the device pairs a 16-bit modified Harvard core with a dedicated DSP engine supporting single-cycle MAC and dual data fetch, plus a Peripheral Trigger Generator (PTG) that offloads sequenced tasks from the CPU. In-Circuit Serial Programming (ICSP) and debug are supported via any PGECx/PGEDx pin pair, and CodeGuard-class flash protection options are available on the family.
Typical applications include digital power supplies and PFC stages driven by the high-speed PWM, BLDC/PMSM and ACIM motor control, industrial automation nodes, and sensor-conditioning systems that exploit the on-chip op amps and CTMU. The -E extended temperature grade suits electronics mounted near motors or in sealed outdoor enclosures.
Design consideration: the device operates from a 3.0V to 3.6V supply, so level translation or 5V-tolerant pin selection is required when interfacing 5V logic; always decouple all VDD/VDDCORE pins and place the ICSP connector on a dedicated PGEC/PGED pair.
This page synthesizes distributor pricing, drop-in family alternatives, pinout data, and practical design notes in one place - information not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP128GP502-E/SS 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:
DSPIC33EP256GP502-E/SS
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
DSPIC33EP64GP502-E/SS
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DSPIC33EP32GP502-E/SS
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DSPIC33EP128GP502-I/SS
β Drop-Inβ In Stock
$2.9 / Unit
View Datasheet βDSPIC33EP128GP502-E/SS Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E 16-bit DSC |
| Maximum CPU Speed | 60 MIPS (60 MHz) |
| Program Memory (Flash) | 128 KB (43K x 24 instruction words) |
| RAM | 16 KB |
| Supply Voltage | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +125C (E grade) |
| Package | 28-SSOP (SS) |
| Mounting Type | Surface Mount |
| Digital Peripherals | High-Speed PWM, DMA, PTG, ICSP |
| Analog Peripherals | ADC, on-chip Op Amps, CTMU, comparators |
| Communication Interfaces | UART, SPI, I2C |
| I/O Drive Capability | 15 mA sink/source (22 mA high-drive pins) |
| 5V-Tolerant I/O | Yes (selectable pins) |
| Programming/Debug | ICSP via PGECx/PGEDx pairs |
| Qualification | AEC-Q100 qualified (family, per Microchip USA) |
| Packaging Option | Tube (E/SS standard pack) |
| RoHS Status | Compliant |
DSPIC33EP128GP502-E/SS Pin Configuration
| Pin 1 | MCLR β Master clear reset (active low), programming voltage input |
| Pin 2 | AN0/VREF+/CN2/RB0 β Analog input 0 / positive ADC reference / port B pin 0 |
| Pin 3 | AN1/VREF-/CN3/RB1 β Analog input 1 / negative ADC reference / port B pin 1 |
| Pin 4 | AN2/SS1/CN4/RB2 β Analog input 2 / SPI slave select / port B pin 2 |
| Pin 5 | AN3/INDX/CN5/RB3 β Analog input 3 / encoder index / port B pin 3 |
| Pin 6 | AN4/QEA/IC7/CN6/RB4 β Analog input 4 / quadrature A input / capture 7 |
| Pin 7 | AN5/QEB/IC8/CN7/RB5 β Analog input 5 / quadrature B input / capture 8 |
| Pin 8 | VSS β Ground reference |
| Pin 9 | OSC1/CLKI/CN30/RA2 β Crystal oscillator input / external clock input |
| Pin 10 | OSC2/CLKO/RC15 β Crystal oscillator output / clock output |
| Pin 11 | VDD β Positive supply (3.0V to 3.6V) |
| Pin 12 | RP15/RC1 β Remappable peripheral pin / port C pin 1 |
| Pin 13 | RP14/RC0 β Remappable peripheral pin / port C pin 0 |
| Pin 14 | RP13/CN13 β Remappable peripheral pin (e.g. SDI1/U1RX) |
| Pin 15 | RP12/CN14 β Remappable peripheral pin |
| Pin 16 | RP11/CN15 β Remappable peripheral pin |
| Pin 17 | RP10/CN16 β Remappable peripheral pin |
| Pin 18 | RP26/PGEC3/CN9 β Remappable pin / ICSP clock pair 3 |
| Pin 19 | VDD β Positive supply (3.0V to 3.6V) |
| Pin 20 | RP19/PGD/SDA1 β Remappable pin / ICSP data / I2C data |
| Pin 21 | RP20/PGEC/PMA0 β Remappable pin / ICSP clock / parallel master address 0 |
| Pin 22 | RP21/PMA14 β Remappable peripheral pin |
| Pin 23 | RP22/PMA13 β Remappable peripheral pin |
| Pin 24 | RP23/PMA12 β Remappable peripheral pin |
| Pin 25 | RP24/PMA11 β Remappable peripheral pin |
| Pin 26 | RP25/PMA10 β Remappable peripheral pin |
| Pin 27 | AVDD β Analog positive supply (tie to VDD with filter) |
| Pin 28 | AVSS β Analog ground |
Typical Applications
DSPIC33EP128GP502-E/SS is suitable for 6 applications: Digital Power Supplies and PFC, BLDC/PMSM Motor Control, Industrial Automation Nodes, Sensor Signal Conditioning and Data Acquisition, Embedded Audio and Signal Processing, Automotive and Rugged Embedded Systems.
Digital Power Supplies and PFC
The DSPIC33EP128GP502-E/SS fits digital power conversion because its high-speed PWM module delivers complementary outputs with programmable dead time and nanosecond-class resolution, while the 60 MIPS DSP engine closes voltage and current loops with single-cycle MAC operations. A typical PFC or LLC stage uses the PWM to drive the switch at 100-500 kHz, with the ADC triggered synchronously at the midpoint of the PWM period to sample current and bus voltage away from switching noise. The on-chip op amp can amplify shunt signals without an external amplifier, reducing BOM count. Because loop compensation runs as firmware, gain scheduling and non-linear control strategies are implemented without hardware changes.
Recommended
BLDC/PMSM Motor Control
Sensorless or sensored control of BLDC and PMSM motors is a primary application for the DSPIC33EP128GP502-E/SS. The high-speed PWM generates the six-step or sinusoidal drive pattern, quadrature encoder interface inputs (QEA/QEB on port B pins) read position from incremental encoders, and the 60 MIPS core executes field-oriented control with Park/Clarke transforms inside the current-loop ISR. The extended -40C to +125C temperature rating of the E grade suits controllers mounted inside motor housings or on heat-soaked drive boards. On-chip comparators support cycle-by-cycle overcurrent shutdown with no CPU latency, protecting power stages during rotor lock events.
Recommended
Industrial Automation Nodes
In factory automation, the DSPIC33EP128GP502-E/SS serves as an intelligent actuator or sensor node: UART, SPI, and I2C ports connect to displays, EEPROM, and field transceivers, while DMA offloads serial transfers from the CPU. The 15 mA (22 mA high-drive) I/O capability directly drives optocoupler LEDs and small relays, and 5V-tolerant pins simplify interfaces to legacy 5V PLC logic. The PTG (Peripheral Trigger Generator) sequences ADC sampling and PWM updates autonomously, freeing the core for protocol handling. The AEC-Q100 family pedigree and E-grade temperature rating give industrial designers margin against cabinet temperature extremes and continuous-duty operation.
Recommended
Sensor Signal Conditioning and Data Acquisition
The on-chip op amps, advanced ADC, and CTMU (Charge Time Measurement Unit) make the DSPIC33EP128GP502-E/SS a compact analog front-end. Shunt, thermistor, or bridge sensor signals can be amplified by the internal op amps before ADC conversion, while the CTMU measures capacitance or time intervals for touch, level, or ultrasonic sensing. With 16 KB of RAM, moderate DSP filtering (FIR/IIR) runs in the Y data space while control code occupies the X space. The DSP MAC engine performs calibration and linearization math in real time, and results stream over UART or SPI to a host without processor stalls thanks to DMA.
Recommended
Embedded Audio and Signal Processing
For lightweight audio tasks - tone generation, active filtering, acoustic alarms, or closed-loop control of Class-D amplifiers - the 60 MIPS DSP engine of the DSPIC33EP128GP502-E/SS executes single-cycle MAC operations with dual operand fetch, sustaining sample rates of tens of kHz with heavy filtering loads. The high-speed PWM can directly generate Class-D carrier waveforms, and the ADC samples microphone or feedback signals synchronously with the PWM trigger. While it will not replace a dedicated audio DSP for high channel counts, it consolidates audio plus control into one 3.3V chip in a 28-SSOP footprint, cutting system cost in appliances and industrial sounders.
Recommended
Automotive and Rugged Embedded Systems
The AEC-Q100 qualification pedigree of the dsPIC33EP128GP502 family, combined with the -E grade -40C to +125C operating range, positions this part for under-hood adjacent and harsh-environment electronics: pump controllers, HVAC actuators, lighting ballasts, and off-highway equipment nodes. The extended temperature rating also benefits non-automotive rugged systems such as solar pump drives and sealed outdoor controllers. Designers should note the 3.0V to 3.6V supply requirement and use 5V-tolerant I/O for transceiver interfaces, and should confirm the specific automotive orderable part number and PPAP support with Microchip for automotive production programs.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128GP502-E/SS β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP256GP502-E/SS | DSPIC33EP64GP502-E/SS | DSPIC33EP32GP502-E/SS | DSPIC33EP128GP502-I/SS | DSPIC33EP128GP502-E/MM |
|---|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-QFN-S 6x6 - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 128 KB | 256 KB | 64 KB | 32 KB | 128 KB | 128 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| CPU Speed | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +85C | -40C to +125C |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Drop-in on Same PCB | - | Yes, pin-to-pin | Yes, pin-to-pin | Yes, pin-to-pin | Yes, pin-to-pin | No - QFN footprint requires new PCB land pattern |
Key Differentiators
- Extended -40C to +125C operation in low-cost SSOP-28 (vs DSPIC33EP128GP502-I/SS)
- Double the firmware headroom on the same PCB (vs DSPIC33EP64GP502-E/SS)
- Easiest assembly and rework vs QFN variant (vs DSPIC33EP128GP502-E/MM)
- DSP engine plus mixed-signal integration (vs DSPIC33CK64MC102-I/SS)
Design Notes
Power the DSPIC33EP128GP502-E/SS from a clean 3.3V rail within 3.0V to 3.6V. Decouple every VDD pin with 100 nF ceramic capacitors placed within 2 mm of the pin, plus a 4.7-10 uF bulk capacitor per board. The internal core regulator requires a dedicated low-ESR capacitor on VDDCORE as specified in the family datasheet (DS70000657J) - omitting it causes brown-out resets during Flash writes. AVDD should be fed through an RC or ferrite filter from VDD to keep ADC noise low.
Route the ICSP connector to one complete PGECx/PGEDx pair - do not mix PGEC from one pair with PGED from another, as confirmed by third-party programmer documentation (northernsoftware.com). Because RP pins are remappable, assign the ICSP pair pins before allocating them to PWM or UART functions in the PPS configuration, or in-circuit programming will fail on assembled boards. Keep crystal traces under 10 mm with guard ground for reliable oscillator startup.
Estimated: the 28-SSOP package theta_JA is approximately 90-110 C/W (verify the exact value in the package outline section of DS70000657J). At a typical 60 mA operating current from 3.3V, dissipation is about 0.2 W, giving roughly 20 C junction rise - acceptable even at +125C ambient only if the ambient rating assumed by Microchip's E-grade spec is respected. Avoid adding significant I/O sink current at maximum ambient; total pin current budget plus core current must keep junction below the datasheet absolute maximum.
When driving the high-speed PWM into long gate-driver traces, use the dead-time registers rather than software delays, and enable the PWM fault/comparator auto-shutdown path so overcurrent events truncate outputs in hardware without CPU latency. For 5V-tolerant inputs driven by 5V logic, configure the corresponding ANSELx bits to digital mode - leaving analog mode active on a shared pin is the most common cause of stuck-input bugs on this family.
Compliance Information
AEC-Q100 qualification per Microchip USA product description; RoHS compliance standard for Microchip active SMD products. REACH/halogen-free status not stated in provided data - verify on Microchip's environmental page.
