DSPIC33EP32MC202-I/SS - 16-bit DSC 32KB Flash 60MHz | Microchip
MPN: DSPIC33EP32MC202-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.12 | $4.12 |
| 10 | $3.71 | $37.10 |
| 100 | $3.3 | $330.00 |
| 500 | $2.97 | $1,485.00 |
| 1,000 | $2.68 | $2,680.00 |
DSPIC33EP32MC202-I/SS Overview
A digital signal controller combines the compute power of a digital signal processor (DSP) with the peripheral integration and control architecture of a microcontroller. Within the power management hierarchy, the dsPIC33E family sits at the top of Microchip's 16-bit embedded control portfolio, scaling up from PIC16 and PIC18 MCUs to full DSP performance. DSCs are the de facto standard building block for precision motor control, digital power conversion, and embedded signal processing systems.
Key features include the dsPIC33E core running at up to 70 MIPS class performance, 21 general-purpose I/O pins, a 6-channel 10-bit/12-bit ADC for simultaneous analog sampling, 4 DMA channels that move data without CPU intervention, 7 timers, and 2 serial communication ports. The MC (motor control) peripheral set integrates high-speed PWM modules purpose-built for inverter and motor drive topologies.
Architecturally, the device uses a modified Harvard pipeline with 24-bit instruction width, fixed-point DSP engine with hardware multiply-accumulate, and single-cycle MAC operations that accelerate control-loop math such as FOC (field-oriented control) and PID algorithms. The operating voltage is 3.3V, and the industrial temperature grade covers -40C to +85C.
Typical applications include brushless DC and PMSM motor drives, digital switching power supplies, solar inverters, UPS systems, and battery chargers. The integrated high-speed PWM with dead-time control eliminates the need for external PWM controllers in most digital power designs.
Design consideration: all VDD/VSS pairs must be decoupled, and PGECx/PGEDx pairs must be routed as matched pairs for in-circuit serial programming (ICSP) compatibility.
This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes beyond what the manufacturer datasheet provides.
Drop-in alternatives for DSPIC33EP32MC202-I/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 DSPIC33EP32MC202-I/SS (same form factor and footprint) — differing in Package, Operating Temperature, Core, RAM, Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP32MC202T-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP32MC202-E/SS
✅ Drop-In✓ In Stock
$2.85 / Unit
View Datasheet →DSPIC33EP32MC202-I/MM
✅ Drop-In✓ In Stock
$2.25 / Unit
View Datasheet →DSPIC33EP32MC202T-E/SS
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP256MC202T-I/SS
✅ Drop-In✓ In Stock
$3.38 / Unit
View Datasheet →DSPIC33EP32MC202-I/SS Maximum Ratings & Electrical Characteristics
| Core Processor | dsPIC33E (16-bit) |
| Program Memory Size | 32 KB (10.7K x 24) Flash |
| RAM Size | 4 KB |
| Maximum Clock Frequency | 60 MHz |
| Core Performance | up to 70 MIPS (family class) |
| Number of I/O | 21 |
| ADC Resolution | 10-bit / 12-bit |
| ADC Channels | 6 |
| DMA Channels | 4 |
| Timers | 7 |
| Serial Ports | 2 |
| Supply Voltage | 3.3 V |
| Operating Temperature | -40C to +85C |
| Package | 28-SSOP (5.30 mm width) |
| Mounting Type | Surface Mount |
| Program Memory Type | Flash |
| Data Converters | A/D 6x10b/12b |
DSPIC33EP32MC202-I/SS Pin Configuration
| Pin 1 | MCLR — Master clear reset / programming voltage input |
| Pin 2 | AN0/C1IN1+/RA0 — Analog input 0 / comparator input / port A |
| Pin 3 | AN1/C1IN1-/RA1 — Analog input 1 / comparator input / port A |
| Pin 4 | PGD3/AN2/SS1/C2IN1-/RB0 — Programming data 3 / analog 2 / SPI slave select / port B |
| Pin 5 | PGC3/AN3/C2IN1+/RB1 — Programming clock 3 / analog 3 / comparator input / port B |
| Pin 6 | PGD2/AN4/C2IN2-/RB2 — Programming data 2 / analog 4 / comparator input / port B |
| Pin 7 | PGC2/AN5/C2IN2+/RB3 — Programming clock 2 / analog 5 / comparator input / port B |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI/RC12 — Oscillator input / external clock input / port C |
| Pin 10 | OSC2/CLKO/RC13 — Oscillator output / clock output / port C |
| Pin 11 | VDD — Power supply (3.3V) |
| Pin 12 | RP1/PGD1/SDI1/T2CK/RC1 — Peripheral pin select / programming data 1 / SPI data in / port C |
| Pin 13 | RP2/PGC1/SDO1/T3CK/RC2 — Peripheral pin select / programming clock 1 / SPI data out / port C |
| Pin 14 | VSS — Ground reference |
| Pin 15 | RP3/SOSCI/T1CK/U1ATX/RC3 — Peripheral pin select / secondary oscillator input / Timer1 clock / port C |
| Pin 16 | RP4/SOSCO/T5CK/PWM1L/RC4 — Peripheral pin select / secondary oscillator output / PWM1 low / port C |
| Pin 17 | RP5/VCAP/VDDCORE — Peripheral pin select / internal regulator capacitor output |
| Pin 18 | RP6/PWM1H/RC5 — Peripheral pin select / PWM1 high / port C |
| Pin 19 | RP7/PWM2L/RC6 — Peripheral pin select / PWM2 low / port C |
| Pin 20 | RP8/PWM2H/RC7 — Peripheral pin select / PWM2 high / port C |
| Pin 21 | RP9/PWM3L/RC8 — Peripheral pin select / PWM3 low / port C |
| Pin 22 | RP10/PWM3H/RC9 — Peripheral pin select / PWM3 high / port C |
| Pin 23 | RP11/U1RX/TXCK/RC10 — Peripheral pin select / UART receive / port C |
| Pin 24 | RP12/U1TX/RXCK/RC11 — Peripheral pin select / UART transmit / port C |
| Pin 25 | RP13/SCK1/RC13 — Peripheral pin select / SPI clock 1 / port C |
| Pin 26 | RP14/SDA1/RC14 — Peripheral pin select / I2C data / port C |
| Pin 27 | RP15/SCL1/RC15 — Peripheral pin select / I2C clock / port C |
| Pin 28 | AVDD/AVSS — Analog power / analog ground reference (per datasheet pin diagram) |
Typical Applications
DSPIC33EP32MC202-I/SS is suitable for 6 applications: Brushless DC and PMSM Motor Control, Digital Switch-Mode Power Supplies, Solar Micro-Inverters and String Optimizers, Uninterruptible Power Supplies (UPS), Battery Chargers and BMS Front Ends, Industrial Embedded Control and Sensing Nodes.
Brushless DC and PMSM Motor Control
The DSPIC33EP32MC202-I/SS fits BLDC and PMSM drives because its MC sub-family high-speed PWM offers complementary outputs, programmable dead time, and cycle-by-cycle current limit needed to drive a three-phase inverter safely. The 6-channel 10/12-bit ADC can be triggered by the PWM module for precisely timed phase-current sampling, which is the key requirement for field-oriented control. Its 60 MHz dsPIC33E core with a single-cycle MAC DSP engine executes the Clarke/Park transforms and PI current loops with substantial headroom, typically closing current loops in the 10-50 microsecond range. Place the ADC sense inputs on the dedicated analog-capable pins and keep shunt-based current feedback paths short; the integrated comparator and fault inputs provide hardware overcurrent shutdown without software latency.
Recommended
Digital Switch-Mode Power Supplies
The DSPIC33EP32MC202-I/SS serves as a digital compensator and PWM generator in AC-DC and DC-DC converters. The high-speed PWM supports multiple output pairs with phase-shifted or complementary operation and resolution adequate for half-bridge, full-bridge, and buck topologies; the 12-bit ADC samples output voltage and current for the control loop while DMA moves samples without CPU load. Compared with an analog PWM controller, the dsPIC33E allows firmware-defined compensation (PID or 2P2Z), non-linear gain scheduling, and PMBus-style adaptivity, though it costs more loop bandwidth than pure analog control. Keep the PWM-to-gate-driver routing short, and use the internal comparators for fast hardware cycle-limiting so that overcurrent events never depend on software response time.
Recommended
Solar Micro-Inverters and String Optimizers
In photovoltaic power electronics, the DSPIC33EP32MC202-I/SS runs maximum-power-point-tracking (MPPT) algorithms and the associated inverter modulation. Its DSP engine performs the P&O or incremental-conductance search quickly while the PWM module handles the boost-stage switching; the 12-bit ADC monitors panel voltage, current, and temperature channels across the 6 inputs. The 32KB Flash accommodates MPPT, grid synchronization, and protection firmware for a single-channel design; designs needing more communication stacks should step up to DSPIC33EP256MC202T-I/SS, which shares the same pinout. The -40C to +85C industrial grade matches rooftop enclosure environments. Isolation between the controller domain and the grid side must be provided externally with optocouplers or digital isolators.
Recommended
Uninterruptible Power Supplies (UPS)
The DSPIC33EP32MC202-I/SS can manage single-phase UPS control: inverter PWM modulation, battery charging management, and transfer-switch sequencing all fit within its peripheral set. The 7 timers provide independent bases for the inverter carrier, line-frequency synchronization, and battery-monitor scheduling; the 4 DMA channels stream ADC results from output-voltage and battery-current channels continuously. Its 60 MHz clock leaves room for the THD-reducing sinusoidal modulation plus harmonic compensation. The 32KB Flash is sufficient for basic online or line-interactive topologies, while fuller feature sets (LCD, communication) benefit from the pin-compatible 256KB variant. Battery protection demands fast hardware current limiting; use the internal comparators and fault pins rather than relying on software-only shutdown paths.
Recommended
Battery Chargers and BMS Front Ends
The DSPIC33EP32MC202-I/SS implements multi-stage charging profiles (CC/CV, trickle, termination) with its PWM and 12-bit ADC: current loops close through firmware PID on ADC-sampled shunt or Hall-sensor feedback, while the voltage loop regulates the CV phase. The 6 ADC inputs cover current, voltage, and temperature channels, and DMA offloads the sampling workload so the core can run state-of-charge estimation math using its DSP MAC. The -40C to +85C grade suits industrial chargers; for automotive bay environments choose the extended-temperature DSPIC33EP32MC202-E/SS drop-in. Layout priority is the sense-path kelvin routing to the ADC pins - ground bounce in the power loop directly corrupts current measurements and can cause premature charge termination or loop instability.
Recommended
Industrial Embedded Control and Sensing Nodes
Beyond power electronics, the DSPIC33EP32MC202-I/SS works as a compact industrial control node: 21 I/O lines, 2 serial ports, and the 12-bit ADC support sensor acquisition and actuator control in a single 28-pin SSOP. Typical roles include pump/fan controllers, proximity-sensor conditioning, and small automation actuators where a DSP-grade core gives margin for filtering (IIR/FIR using the MAC engine) and diagnostics. The 32KB Flash suits fixed-function firmware; product families expecting field upgrades or protocol growth should use the same-pinout 256KB variant. With 3.3V I/O, level-shifting is required for 5V legacy PLC signals. The ICSP programming pairs let field service update firmware with a two-wire header, a practical benefit for deployed industrial equipment maintenance.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32MC202-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP32MC202T-I/SS | DSPIC33EP32MC202-E/SS | DSPIC33EP32MC202-I/MM | DSPIC33EP256MC202T-I/SS |
|---|---|---|---|---|---|
| Package | 28-SSOP (5.30 mm) | 28-SSOP (5.30 mm) - same | 28-SSOP (5.30 mm) - same | 28-SSOP (5.30 mm) - same | 28-SSOP (5.30 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 32 KB (10.7K x 24) | 32 KB | 32 KB | 32 KB | 256 KB |
| Max Clock Frequency | 60 MHz | 60 MHz | 60 MHz | 60 MHz | 60 MHz |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C |
| Packaging | Tube/Rail | Tape & Reel | Tube/Rail | Tube/Rail | Tape & Reel |
| Motor Control Peripherals (MC sub-family) | Yes (high-speed PWM, 3 pairs) | Yes - identical | Yes - identical | Yes - identical | Yes - identical |
Key Differentiators
- Purpose-built motor-control PWM set (vs DSPIC33EP32GP502 (same memory class, GP sub-family))
- 8x program memory in the identical footprint (vs DSPIC33EP256MC202T-I/SS)
- Extended temperature availability without redesign (vs DSPIC33EP32MC202-E/SS)
Design Notes
The DSPIC33EP32MC202-I/SS includes an internal 1.8V core regulator whose output must be decoupled with the specified VCAP capacitor (typically a low-ESR ceramic per the datasheet) placed within 2 mm of the VCAP pin. Omitting or misplacing this capacitor is the single most common bring-up failure for dsPIC33EP designs - the device will not clock or program correctly. Additionally, connect every VDD/VSS pair with 0.1 uF ceramics and provide a bulk 10 uF at the board entry point. Estimated: at 60 MHz with 21 I/O loaded, core current stays well under the 3.3V rail budget of typical LDO supplies such as the MCP1700 family at 250 mA.
The device provides multiple PGECx/PGEDx pairs for ICSP; any pair works for programming, but ICSPCLK and ICSPDAT must come from the same pair (e.g., PGEC2 with PGED2, per northernsoftware.com's support notes). Route the chosen pair as a short, matched stub to a standard 5-pin ICSP header, and keep MCLR with its 10 kOhm pull-up and series resistor per Microchip programming specifications. Avoid routing PGED/PGEC traces under PWM or gate-driver circuits - transients on these lines during motor operation can corrupt in-circuit debug sessions.
For motor-drive or digital-power use, partition the board so the power loop (bus capacitors, MOSFETs, shunts) is physically separated from the controller, with a single-point analog ground connection to AVSS. Kelvin-route current-shunt signals directly to the ADC input pins; ground bounce of even 50 mV on a shunt sized for a few hundred mV full-scale creates several-percent current-sensing error that destabilizes FOC current loops. Use the internal comparators and PWM fault inputs for hardware overcurrent shutdown - never depend on ADC-then-software paths, which add microseconds of latency precisely when the bridge needs nanosecond protection.
Compliance Information
RoHS status per distributor listings (LCSC/etei comparison pages list RoHS compliance dimension). REACH, halogen-free, and conflict-minerals status not stated in provided data.
