DSPIC33EP128MC202-E/SS - 16-bit 60 MIPS DSC 128KB | Microchip
MPN: DSPIC33EP128MC202-E/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.12 | $6.12 |
| 10 | $5.55 | $55.50 |
| 100 | $4.95 | $495.00 |
| 500 | $4.52 | $2,260.00 |
| 1,000 | $4.18 | $4,180.00 |
DSPIC33EP128MC202-E/SS Overview
A digital signal controller combines the computational capability of a 16-bit MCU with the hardware DSP engine and precision analog peripherals of a digital signal processor. In the power-management hierarchy of embedded systems, DSCs sit between general-purpose microcontrollers and dedicated DSPs, making them the de-facto standard for closed-loop digital power and motor-control conversion where fast control loops and high-resolution PWM are mandatory.
Key features include dual pipelined buses for DSP MAC operations, high-speed PWM modules with complementary outputs and dead-time insertion, an internal fast RC oscillator, multiple PWM/motor-control peripherals, POR, and a watchdog timer. The device operates from a single 3.3 V supply and supports In-Circuit Serial Programming (ICSP) with two program and two complex data breakpoints, plus IEEE 1149.2-compatible JTAG boundary scan.
Technical depth comes from the dsPIC33E core architecture: a modified Harvard structure with 16-bit data and 24-bit instructions, hardware divide and DSP multiply-accumulate units, and deterministic interrupt latency - essential attributes when the same silicon closes the current loop of a field-oriented-control (FOC) motor drive at 20-50 kHz.
Typical applications include brushless DC (BLDC) and permanent-magnet synchronous motor (PMSM) control, solar micro-inverters and power-factor-correction stages, and automotive auxiliary systems (the -E suffix is AEC-Q100 automotive qualified per distributor data).
Design consideration: all VDD and VSS pins must be connected, and any PGECx/PGEDx pin pair must be used as a pair for programming - using PGEC2 for ICSPCLK requires PGED2 for ICSPDAT.
This page synthesizes distributor pricing, drop-in family alternatives, pinout data, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP128MC202-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 DSPIC33EP128MC202-E/SS (same form factor and footprint) — differing in Package, Core, Flash Program Memory, Operating Temperature, RAM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128MC202-I/SS
✅ Drop-In✓ In Stock
$3.44 / Unit
View Datasheet →DSPIC33EP256MC202-E/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64MC202-E/SS
✅ Drop-In✓ In Stock
$1.96 / Unit
View Datasheet →DSPIC33EP32MC202-E/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.85 / Unit
View Datasheet →DSPIC33EP128GP202-E/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MC202-E/SS Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E 16-bit RISC DSC |
| CPU Speed | 60 MIPS / 60 MHz |
| Flash Program Memory | 128 KB (43K x 24) |
| RAM | 16 KB |
| Supply Voltage | 3.3 V |
| Package | 28-SSOP (0.209 in / 5.30 mm width) |
| Pin Count | 28 |
| Operating Temperature | -40C to +125C (Extended, -E suffix) |
| Qualification | AEC-Q100 automotive |
| Peripherals | Motor Control PWM, PWM, POR, WDT |
| Oscillator Type | Internal oscillator |
| Programming | ICSP (In-Circuit Serial Programming), In-Application Programming |
| Debug Features | Two program and two complex data breakpoints |
| JTAG | IEEE 1149.2 compatible boundary scan, trace and run-time watch |
| Mounting Type | Surface Mount |
| Packaging | Tube |
| RoHS Status | Compliant |
DSPIC33EP128MC202-E/SS Pin Configuration
| Pin 1 | MCLR — Master clear reset (active low), programming voltage input |
| Pin 2 | AN0/VREF+/CN2/RB0 — Analog input 0 / positive voltage reference / change notification / port B |
| Pin 3 | AN1/VREF-/CN3/RB1 — Analog input 1 / negative voltage reference / change notification / port B |
| Pin 4 | AN2/SS1/CN4/RB2 — Analog input 2 / SPI slave select 1 / port B |
| Pin 5 | AN3/INDX/CN5/RB3 — Analog input 3 / QEI index / port B |
| Pin 6 | AN4/QEA/IC7/CN6/RB4 — Analog input 4 / QEI phase A / input capture 7 / port B |
| Pin 7 | AN5/QEB/IC8/CN7/RB5 — Analog input 5 / QEI phase B / input capture 8 / port B |
| Pin 8 | VSS — Ground reference (must be connected for programming) |
| Pin 9 | OSC1/CLKI/CN12/RA2 — Oscillator crystal input / external clock input / port A |
| Pin 10 | OSC2/CLKO/CN13/RA3 — Oscillator crystal output / clock output / port A |
| Pin 11 | VDD — 3.3 V power supply (must be connected for programming) |
| Pin 12 | RP15/RF4/U1RX/SDI1/CN17 — Remappable pin: UART1 RX / SPI1 data in / port F |
| Pin 13 | RP14/RF5/U1TX/SDO1/CN16 — Remappable pin: UART1 TX / SPI1 data out / port F |
| Pin 14 | VSS — Ground reference (must be connected for programming) |
| Pin 15 | VDD — 3.3 V power supply (must be connected for programming) |
| Pin 16 | RP13/SOSCI/T2CK/CN14/RB6 — Secondary oscillator input / Timer2 clock / remappable pin / port B |
| Pin 17 | RP12/SOSCO/T1CK/CN15/RB7 — Secondary oscillator output / Timer1 clock / remappable pin / port B |
| Pin 18 | VDD — 3.3 V power supply |
| Pin 19 | RP11/PWM1L1/INT0/RE0 — Remappable pin: PWM1 low output / external interrupt 0 / port E |
| Pin 20 | RP10/PWM1H2/RE1 — Remappable pin: PWM1 high output / port E |
| Pin 21 | RP9/PWM1L2/RP32/PGD1/RE2 — Remappable pin: PWM1 low output / ICSP data pin 1 / port E |
| Pin 22 | RP8/PWM1H3/RP31/PGC1/RE3 — Remappable pin: PWM1 high output / ICSP clock pin 1 / port E |
| Pin 23 | RP7/INT1/RP30/PGD2/RE4 — Remappable pin: external interrupt 1 / ICSP data pin 2 / port E |
| Pin 24 | RP6/INT2/RP29/PGC2/RE5 — Remappable pin: external interrupt 2 / ICSP clock pin 2 / port E |
| Pin 25 | AVSS — Analog ground reference |
| Pin 26 | AVDD — Analog 3.3 V supply for ADC |
| Pin 27 | AN9/RP3/PWM1L3/RE9 — Analog input 9 / remappable pin: PWM1 low output / port E |
| Pin 28 | AN10/RP2/PWM1H4/RE8 — Analog input 10 / remappable pin: PWM1 high output / port E |
Typical Applications
DSPIC33EP128MC202-E/SS is suitable for 6 applications: BLDC / PMSM Motor Control, Digital Power Conversion, Automotive Auxiliary Systems, Industrial Automation and Robotics, LED Lighting and Electronic Ballasts, Sensing and Instrumentation Nodes.
BLDC / PMSM Motor Control
The DSPIC33EP128MC202-E/SS is purpose-built for brushless DC and permanent-magnet synchronous motor drives. Its 60 MIPS dsPIC33E core executes field-oriented control current loops at 20-50 kHz with deterministic latency, while the motor-control PWM peripheral generates complementary six-step outputs with programmable dead-time insertion for three-phase bridges. The 128 KB Flash accommodates sensorless estimators (sliding-mode or back-EMF observers) plus parameter tables, and 16 KB RAM buffers ADC current-sampling streams. Placed directly driving gate-driver inputs, the DSC eliminates an external DSP while keeping loop bandwidth above the electrical frequency of most appliance and pump motors.
Recommended
Digital Power Conversion
For AC-DC and DC-DC stages such as power-factor correction, LLC, and solar micro-inverters, the DSPIC33EP128MC202-E/SS closes voltage and current loops digitally at 60 MIPS. High-speed PWM with complementary outputs, dead-time, and fault trip inputs replaces analog controllers, enabling adaptive compensation and soft-start profiles in firmware. The 3.3 V core interfaces directly to shunt or current-transformer conditioning through its ADC inputs. Because the control law lives in the 128 KB Flash, one PCB serves multiple power ratings or grid standards - a quantified BOM saving in multi-SKU power product families.
Recommended
Automotive Auxiliary Systems
The -E suffix brings AEC-Q100 qualification and a -40C to +125C operating range, making this DSC suitable for automotive auxiliary motor and actuator control: HVAC blowers, electronic water pumps, throttle and flap actuators, and pumps in thermal-management modules. The internal oscillator reduces crystal count in cost-sensitive nodes, while ICSP programming supports end-of-line flashing. According to distributor data, this exact MPN is categorized as automotive AEC-Q100 - engineers can design it in without a separate automotive order code, provided the 3.3 V supply rail is derived from the vehicle load-dump-protected system.
Recommended
Industrial Automation and Robotics
In factory automation, the DSPIC33EP128MC202-E/SS serves as a compact motion node: stepper or servo indexers, conveyor synchronizers, and robotic joint controllers. The DSP multiply-accumulate engine accelerates trajectory interpolation filters, and the JTAG boundary-scan (IEEE 1149.2) capability supports board-level test during production. Dual program/data breakpoints speed firmware bring-up on the motion loop. With 128 KB Flash, one image can hold several motion profiles selectable over UART or CAN, letting a single SKU cover multiple machine variants and shortening the field-firmware update path through in-application programming.
Recommended
LED Lighting and Electronic Ballasts
High-intensity and industrial LED drivers benefit from the high-speed PWM: the DSC dims LEDs at frequencies above audibility while a second PWM channel manages constant-current regulation, all from one 28-pin 3.3 V device. The 60 MIPS core implements power correction for off-line drivers, and the extended -E temperature range suits enclosed luminaires where ambient can reach 85C with hot spots to +125C junction-adjacent board regions. Firmware-based control allows dimming curves, DALI-like protocol stacks, and fault derating without changing hardware - a key advantage over fixed-function LED controller ICs.
Recommended
Sensing and Instrumentation Nodes
The 16 KB RAM and DSP MAC hardware make the DSPIC33EP128MC202-E/SS an efficient front-end for signal-conditioning nodes: digital filters (FIR/IIR) run on sampled sensor streams before transmission over UART or SPI. The internal oscillator and 3.3 V single-supply operation simplify battery-backed or isolated field instruments, and ICSP allows recalibration constants to be flashed on the production line. Automotive qualification extends use into vehicle sensor modules such as position and pressure instrumentation, where the +125C ceiling covers engine-bay ambient extremes without a derated lifetime specification.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128MC202-E/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128MC202-I/SS | DSPIC33EP256MC202-E/SS | DSPIC33EP64MC202-E/SS | DSPIC33EP32MC202-E/SS | DSPIC33EP128GP202-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 |
| Flash Program Memory | 128 KB (43K x 24) | 128 KB | 256 KB | 64 KB | 32 KB | 128 KB |
| CPU Speed | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS |
| Operating Temperature | -40C to +125C | -40C to +85C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| Peripheral Family | Motor Control (MC): high-speed PWM, advanced analog | Motor Control (MC) | Motor Control (MC) | Motor Control (MC) | Motor Control (MC) | General Purpose (GP) |
| Automotive AEC-Q100 | Yes | No (industrial grade) | Yes (-E grade) | Yes (-E grade) | Yes (-E grade) | Yes (-E grade) |
Key Differentiators
- Extended automotive temperature and qualification (vs DSPIC33EP128MC202-I/SS)
- Motor-control peripheral set (vs DSPIC33EP128GP202-E/SS)
- Balanced memory/cost point in the family (vs DSPIC33EP256MC202-E/SS)
Design Notes
Programming pitfalls: all VDD and VSS pins (pins 8, 11, 14, 15, 18) must be connected, and PGECx/PGEDx pins must be used as pairs - if PGEC2 (pin 24) carries ICSPCLK, ICSPDAT must connect to PGED2 (pin 23). Even one unconnected supply pin can make programming fail, per Microchip programming documentation. Reserve one full PGEC/PGED pair plus MCLR on a standard 5-pin (or RJ-11/ICD) programming header in your layout, with a series resistor (about 100 ohm to 470 ohm) on MCLR and keep the trace short.
Decouple each VDD pin (11, 15, 18) and the AVDD pin (26) individually: place 100 nF X7R ceramic capacitors within 2 mm of each pin, plus one bulk 4.7-10 uF capacitor near the device. AVDD should be isolated from digital VDD with an RC filter (e.g., 10 ohm + 1 uF) or an LC filter to protect ADC accuracy in motor-control current sensing, where ripple on the analog rail directly corrupts shunt measurements. Estimated: a 10 ohm/1 uF RC gives a ~16 kHz corner, well above ADC sampling needs but rejecting switching noise.
For motor-control use, route PWM outputs (pins 19, 20, 21, 22, 27, 28) away from analog inputs AN0-AN10 and the AVSS/AVDD pair (pins 25-26). Keep the gate-driver return path under the PWM traces to minimize loop area and EMI; this matters when switching 3-phase bridges at 20-50 kHz. The internal oscillator removes the crystal, but if you use the secondary oscillator (pins 16-17) for an RTC, guard it with ground pour and keep crystal load capacitors close to the pins.
Compliance Information
Distributor data (Datasheets.com, Hotenda) lists this part as automotive AEC-Q100, 3.3 V, 28-pin SSOP. RoHS compliance per standard Microchip -E/SS flow. REACH and halogen-free status not stated in provided data.
