DSPIC33EP128MC502-H/SS - 16-bit DSC 128KB Flash 60MHz | Microchip
MPN: DSPIC33EP128MC502-H/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.68 | $4.68 |
| 10 | $4.21 | $42.10 |
| 100 | $3.76 | $376.00 |
| 500 | $3.38 | $1,690.00 |
| 1,000 | $3.1 | $3,100.00 |
DSPIC33EP128MC502-H/SS Overview
A digital signal controller combines the computational power of a digital signal processor with the peripheral integration and deterministic behavior of a microcontroller. Within the power-management hierarchy, the dsPIC33E family sits above basic MCUs and below full DSPs, offering a 70 MIPS-class dsPIC DSC core with integrated DSP engine, making it ideal for real-time embedded control loops such as field-oriented motor control.
Key features include a 16-bit pipelined core with DSP multiply-accumulate instructions, an ADC configurable as 10-bit at 1.1 Msps with four sample-and-hold circuits or 12-bit at 500 ksps with one sample-and-hold, six analog inputs on 28-pin devices, and up to three op amp/comparators with direct connection to the ADC module. The device also supports In-Circuit and In-Application Programming (ICSP) with two program and two complex data breakpoints, plus IEEE 1149.2 compatible JTAG boundary scan, trace, and run-time watch.
Technically, the dsPIC33EP architecture separates program and data buses and adds a dedicated DSP engine, so control algorithms (PI/PID loops, Park/Clarke transforms) execute alongside peripheral-driven PWM generation without CPU stalls. Flexible and independent ADC trigger sources allow simultaneous sampling synchronized to the high-speed PWM - essential for low-latency current sensing in motor drives.
Typical applications include brushless DC (BLDC) and permanent-magnet synchronous motor (PMSM) drives, power factor correction and digital power supplies, and industrial automation nodes requiring precise analog sensing and deterministic control.
A key design consideration: configure the ADC resolution/Msps trade-off early (10-bit/1.1 Msps vs 12-bit/500 ksps) since it determines current-loop bandwidth, and always connect all VDD/VSS pairs and use a matched PGECx/PGEDx pair for ICSP programming.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with pricing as of 2026-09-24.
Drop-in alternatives for DSPIC33EP128MC502-H/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 DSPIC33EP128MC502-H/SS (same form factor and footprint) — differing in Package, Operating Temperature, Core Architecture, Program Memory (Flash), Qualification.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128GP502-E/SS
✅ Drop-In✓ In Stock
$2.75 / Unit
View Datasheet →DSPIC33EP128GP502-H/SO
✅ Drop-In✓ In Stock
$3.36 / Unit
View Datasheet →DSPIC33EP256MC502-H/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64MC502-H/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32MC502-H/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.75 / Unit
View Datasheet →DSPIC33EP128MC202T-E/MM
✅ Drop-In✓ In Stock
$3.41 / Unit
View Datasheet →DSPIC33EP128MC502-H/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC DSC core |
| Program Memory (Flash) | 128 KB |
| RAM | 16 KB |
| Core Clock / Performance | 60 MHz (Mouser listing) |
| Family Class | dsPIC33E Motor Control (MC) family, 70 MIPS class core |
| Package | 28-pin SSOP (SS) |
| Pin Count | 28 |
| Mounting Type | Surface Mount |
| ADC Resolution / Speed | 10-bit, 1.1 Msps with 4 S&H or 12-bit, 500 ksps with 1 S&H |
| Analog Inputs (28-pin device) | 6 |
| Op Amps / Comparators | Up to 3, direct connection to ADC module |
| ADC Trigger Sources | Flexible and independent |
| Debug Features | 2 program and 2 complex data breakpoints, JTAG boundary scan (IEEE 1149.2 compatible), trace and run-time watch |
| Programming | In-Circuit and In-Application Programming (ICSP), multiple PGECx/PGEDx pairs |
DSPIC33EP128MC502-H/SS 28-pin ssop (ss) Pin Configuration Guide
Pin configuration for DSPIC33EP128MC502-H/SS (28-pin ssop (ss) 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 DSPIC33EP128MC502-H/SS.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP128MC502-H/SS is suitable for 6 applications: BLDC / PMSM Motor Control, Digital Power Supplies and PFC, Industrial Automation Nodes, Embedded Sensing and Signal Processing, Appliance and HVAC Control, Robotics and Servo Drives.
BLDC / PMSM Motor Control
The DSPIC33EP128MC502-H/SS fits brushless DC and permanent-magnet synchronous motor drives because its 60 MHz 16-bit DSC core executes field-oriented control algorithms while dedicated high-speed PWM drives the inverter stage. The ADC, configurable at 10-bit/1.1 Msps (four sample-and-hold) or 12-bit/500 ksps, samples phase currents synchronized to PWM via flexible independent trigger sources, minimizing current-loop latency. Up to three op amps/comparators connected directly to the ADC condition sensor signals on-chip, reducing external component count in compact 28-pin drive designs.
Recommended
Digital Power Supplies and PFC
In switch-mode power supplies and power-factor-correction stages, the DSPIC33EP128MC502-H/SS provides the deterministic control loop needed for voltage-mode and current-mode regulation. The 60 MHz core closes current loops fast enough for 100-500 kHz converters, while the 12-bit/500 ksps ADC with independent triggers samples input/output voltages synchronized to PWM edges, avoiding switching-noise corruption. The integrated comparators can implement cycle-by-cycle overcurrent protection in hardware, and ICSP with in-application programming supports field firmware updates in deployed power hardware.
Recommended
Industrial Automation Nodes
The DSPIC33EP128MC502-H/SS serves as a compact intelligent node in factory automation, combining control, sensing, and communication on one chip. Its 128KB Flash hosts protocol stacks and control logic simultaneously, the six analog inputs acquire sensor data through the 10-bit/1.1 Msps ADC, and IEEE 1149.2 compatible JTAG boundary scan eases board-level production test. The 28-pin SSOP conserves PCB area in dense I/O modules, while in-application programming enables firmware field upgrades without pulling controllers from installed equipment.
Recommended
Embedded Sensing and Signal Processing
For sensor-conditioning applications, the DSPIC33EP128MC502-H/SS leverages its DSP multiply-accumulate engine and flexible ADC to perform real-time filtering, FFT analysis, and calibration on-chip. The 12-bit/500 ksps conversion mode provides resolution adequate for vibration and acoustic analysis, and the four sample-and-hold 10-bit mode enables simultaneous multi-channel acquisition with 1.1 Msps throughput. Up to three on-chip op amps buffer low-level sensor outputs directly into the ADC, eliminating external amplifiers in cost-sensitive 28-pin designs.
Recommended
Appliance and HVAC Control
Home appliances and HVAC equipment use the DSPIC33EP128MC502-H/SS to drive variable-speed compressor and fan motors with sensorless FOC, improving energy efficiency versus fixed-speed designs. The 60 MHz core handles position observer algorithms, the on-chip comparators provide hardware overcurrent protection, and the 128KB Flash accommodates both motor control and user-interface logic. In-application programming allows OEMs to update control firmware in the field, and the small 28-SSOP package fits space-constrained appliance control boards.
Recommended
Robotics and Servo Drives
Robot joints and servo actuators benefit from the DSPIC33EP128MC502-H/SS combination of 60 MHz real-time processing, synchronized current sensing, and 500 ksps 12-bit feedback acquisition. The DSP engine computes inverse kinematics inner loops and torque control at kilohertz rates, while independent ADC triggers align sampling with PWM for clean current measurement. Two program and two complex data breakpoints plus run-time watch accelerate control-firmware debugging, and multiple PGECx/PGEDx pairs give flexible in-circuit programming access in densely populated robot controller PCBs.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128MC502-H/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128GP502-E/SS | DSPIC33EP128GP502-H/SO | DSPIC33EP128MC202T-E/MM |
|---|---|---|---|---|
| Package | 28-SSOP (SS) | 28-SSOP (SS) - same | 28-SOIC - same pin functions, larger body | 28-QFN (MM) - same pin functions, different land pattern |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 128 KB | 128 KB | 128 KB | 128 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB |
| Core Speed | 60 MHz | 70 MIPS class core | 70 MIPS class core | 70 MIPS class core |
| Family Emphasis | Motor Control (MC) - op amps/comparators to ADC | General Purpose - CAN, CTMU, PTG | General Purpose - CAN, CTMU, PTG | Motor Control, reduced analog set |
| JTAG / Debug | 2 program + 2 data breakpoints, IEEE 1149.2 JTAG | Same dsPIC33EP debug architecture | Same dsPIC33EP debug architecture | Same dsPIC33EP debug architecture |
| On-site Stock (XAIPART) | Quote-based | Yes - XAIPART product page | Yes - XAIPART product page | Yes - XAIPART product page (tape & reel) |
Key Differentiators
- Integrated op amps/comparators wired directly to the ADC (vs DSPIC33EP128GP502-E/SS)
- Same silicon in SOIC for cost-optimized builds (vs DSPIC33EP128GP502-H/SO)
- Complete motor-control analog front end vs reduced MC202 (vs DSPIC33EP128MC202T-E/MM)
Design Notes
Connect ALL VDD and VSS pin pairs - Microchip explicitly requires all VSS/VDD pins to be connected for correct operation and reliable ICSP programming. Decouple each VDD pin with 100 nF ceramic capacitors placed within 2-3 mm of the pin, plus one bulk 4.7-10 uF capacitor per supply rail. Estimated: at 60 MHz with typical dsPIC33E core current in the tens of mA range, supply ripple must stay well below the datasheet VDD tolerance for ADC accuracy.
The device offers more than one PGECx/PGEDx pair for ICSP - you must use them as matched pairs (e.g., PGEC2->ICSPCLK requires PGED2->ICSPDAT). Route the chosen pair as a short, guarded trace pair to a standard 5-pin ICSP header, and keep the MCLR pin trace away from PWM switching nodes to prevent spurious resets during motor-drive operation. Reserve programming-header space on dense boards since the 28-SSOP has no alternate boot interface.
Choose the ADC mode deliberately: 10-bit/1.1 Msps with four sample-and-hold circuits suits simultaneous multi-phase current sampling, while 12-bit/500 ksps with one sample-and-hold suits precision single-channel measurement - a mid-project mode change can break control-loop timing budgets. Also note the analog front end (up to three op amps/comparators with direct ADC connection) is an MC502 family feature; if you substitute an MC202 variant for cost, that hardware amplifier stage disappears and the PCB analog section must change.
Compliance Information
Compliance status was not stated in the retrieved web data for the -H/SS suffix specifically; verify RoHS/REACH on the Microchip product page before design-in. Comparison services list RoHS/REACH status per exact suffix, so confirm against the ordering-code table in the manufacturer datasheet.
