DSPIC33EP256MC206T-I/MR - 70 MIPS 16-bit DSC, 256KB | Microchip
MPN: DSPIC33EP256MC206T-I/MR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.85 | $5.85 |
| 10 | $5.35 | $53.50 |
| 100 | $4.75 | $475.00 |
| 500 | $4.3 | $2,150.00 |
| 1,000 | $3.95 | $3,950.00 |
DSPIC33EP256MC206T-I/MR Overview
A digital signal controller combines the control peripherals of a microcontroller with the mathematical throughput of a DSP in a single Harvard-architecture device. In the power-management hierarchy, the dsPIC33EP family sits above general-purpose PIC16/PIC24 MCUs and below dedicated DSPs, making it a popular choice for embedded control systems that need both fast interrupt response and single-cycle MAC (multiply-accumulate) DSP instructions for control-loop filtering.
Key features of the dsPIC33EP256MC206 include the 16-bit dsPIC33E core with DSP engine, on-chip high-speed PWM modules suited to motor control, integrated op amps and advanced analog peripherals per the family data sheet, and connectivity peripherals including I2C, SPI, UART/USART, IrDA, LINbus and QEI (quadrature encoder interface), as listed on the Microchip product page and distributor listings.
Architecturally, the dsPIC33E core executes most instructions in a single cycle at up to 70 MIPS, and the MC (motor control) subfamily adds high-resolution PWM with dead-time control and fault inputs essential for driving three-phase inverters. The 85.5K x 24 flash organization supports self-programming for field firmware updates, while the RAM provides workspace for control loops and DSP buffers.
Typical applications include brushless DC and PMSM motor drives, digital power supplies (PFC, LLC), solar inverters, and industrial automation nodes requiring encoder feedback via QEI. The 64-pin VQFN offers a compact 9x9 mm footprint with exposed pad for thermal and ground integrity.
Design consideration: connect every VDD and VSS pin pair on the 64-pin device; per Microchip documentation (northernsoftware.com), leaving any supply pin unconnected can cause programming or debugging failures.
This page synthesizes distributor availability, same-package alternatives, and practical design notes beyond what the manufacturer datasheet provides. Pricing below is an estimate as of 2026-09-24; confirm live pricing with distributors.
Drop-in alternatives for DSPIC33EP256MC206T-I/MR — 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 DSPIC33EP256MC206T-I/MR (same form factor and footprint) — differing in Package, Packaging, Program Memory (Flash), Temperature Grade.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP256MC206T-E/MR
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP128MC206T-I/MR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64MC206T-I/MR
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.2 / Unit
View Datasheet →DSPIC33EP256GM306T-I/MR
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
Contact for price
View Datasheet →DSPIC33EP256MC506T-I/MR
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.65 / Unit
View Datasheet →DSPIC33EP256MC206T-I/MR Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E 16-bit DSC core |
| Maximum CPU Speed | 70 MIPS |
| Program Memory Size | 256 KB (85.5K x 24) flash |
| Supply Voltage | 3.3 V |
| Package | 64-VQFN with exposed pad (MR) |
| Pin Count | 64 |
| Mounting Type | Surface Mount |
| Connectivity | I2C, SPI, UART/USART, IrDA, LINbus, QEI |
| Analog Peripherals | Op amps and advanced analog (per family datasheet) |
| PWM | High-speed PWM (motor control subfamily) |
| Hardware Breakpoints | 4 |
| Packaging | Tape & Reel (T suffix) |
| Temperature Grade | -40C to +85C (I suffix) |
DSPIC33EP256MC206T-I/MR 64-vqfn with exposed pad (mr) Pin Configuration Guide
Pin configuration for DSPIC33EP256MC206T-I/MR (64-vqfn with exposed pad (mr) 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 DSPIC33EP256MC206T-I/MR.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP256MC206T-I/MR is suitable for 6 applications: BLDC / PMSM Motor Drives, Digital Power Supplies (PFC / LLC), Industrial Automation Nodes, Solar Micro-Inverters, Robotics and Servo Drives, Embedded Control and IoT Edge Nodes.
BLDC / PMSM Motor Drives
The DSPIC33EP256MC206T-I/MR fits motor control because its 70 MIPS dsPIC33E core executes field-oriented control (FOC) loops with single-cycle DSP multiply-accumulate instructions, while the MC subfamily integrates high-speed PWM with dead-time control and a QEI encoder interface. In a typical three-phase inverter, the DSC reads phase currents and encoder position, runs the current/speed loop at 10-20 kHz, and drives the PWM gate stages from the same chip. Unlike a generic MCU plus external DSP, this integration reduces BOM count and loop latency. Trade-off: available ADC channels must be budgeted across current sensing and bus-voltage feedback in the 64-pin footprint.
Recommended
Digital Power Supplies (PFC / LLC)
The 70 MIPS core with hardware DSP enables voltage-mode and current-mode digital control loops for PFC and LLC stages at switching frequencies up to several hundred kHz. The dsPIC33EP256MC206's high-speed PWM supports complementary outputs with adjustable dead time and cycle-by-cycle current limiting via fault inputs, which is essential for half-bridge and full-bridge topologies. On-chip op amps reduce external signal-conditioning parts for current-shunt sensing. Because firmware implements the compensator, gains can be updated across load ranges without hardware changes - a key benefit versus fixed analog compensation; the trade-off is firmware validation effort for every control-loop change.
Recommended
Industrial Automation Nodes
For factory automation endpoints, the DSPIC33EP256MC206T-I/MR combines UART/USART, LINbus, I2C and SPI connectivity in one 3.3V device, letting a single DSC bridge field sensors to a higher-level controller while simultaneously running local closed-loop control. The 256KB flash (85.5K x 24 words) leaves room for protocol stacks plus the control application, and four hardware breakpoints ease debugging of interrupt-heavy code. The industrial -40C to +85C grade matches panel and cabinet environments. Designers should plan for a 3.3V rail and connect all VDD/VSS pin pairs, as Microchip documentation warns that unconnected supply pins can break programming.
Recommended
Solar Micro-Inverters
Grid-tie micro-inverter control demands fast, deterministic loops for maximum power point tracking (MPPT) and grid-current shaping. The dsPIC33EP256MC206's DSP engine performs the MPPT math while its high-resolution PWM shapes the power-stage switching, and the 12-bit ADC front end (per family datasheet advanced analog) samples voltage and current feedback. A single 64-pin VQFN replaces discrete controllers, cutting board area - valuable in micro-inverter enclosures mounted behind panels. Note the thermal budget: with the -I grade limited to +85C ambient, derating or the -E (+125C) variant may be required in hot outdoor installations.
Recommended
Robotics and Servo Drives
Robotic joints need tight torque loops with encoder feedback; the QEI peripheral decodes quadrature signals in hardware while the 70 MIPS core runs cascaded position/velocity/current loops. The DSP MAC accelerates notch filters and observer algorithms (e.g., for sensorless FOC) without floating-point coprocessors, and 256KB flash accommodates trajectory planning alongside control code. Communication across joints uses UART or SPI daisy chains. Layout consideration: keep PWM and analog sense traces separated on the 64-VQFN footprint and use the exposed pad as a low-inductance ground to protect ADC accuracy from switching noise.
Recommended
Embedded Control and IoT Edge Nodes
As a general 16-bit embedded controller, the DSPIC33EP256MC206T-I/MR suits data-acquisition and edge-control nodes that need more math throughput than a PIC16 but simpler certification than a Linux-class SoC. SPI and I2C connect to sensors and radios, the 256KB flash stores application plus bootloaders for field updates via self-programming, and 3.3V single-supply operation simplifies power design. The 64-VQFN's compact 9x9 mm footprint fits dense PCBs. For designs not needing the motor-control PWM/op-amp peripherals, the pin-compatible GM306 variant offers a general-purpose peripheral set on the same footprint.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP256MC206T-I/MR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP256MC206T-E/MR | DSPIC33EP128MC206T-I/MR | DSPIC33EP256GM306T-I/MR | DSPIC33EP256MC206T-I/PT |
|---|---|---|---|---|---|
| Package | 64-VQFN (9x9 mm, exposed pad, MR) | 64-VQFN (9x9 mm) - same | 64-VQFN (9x9 mm) - same | 64-VQFN (9x9 mm) - same | 64-TQFP (10x10 mm) - different footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Flash Program Memory | 256 KB (85.5K x 24) | 256 KB | 128 KB | 256 KB | 256 KB |
| Operating Temperature | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +85C | -40C to +85C | -40C to +85C |
| Peripheral Focus | Motor control (high-speed PWM, op amps) | Motor control - same | Motor control - same | General purpose | Motor control - same |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Packaging | Tape & Reel (T) | Tape & Reel (T) | Tape & Reel (T) | Tape & Reel (T) | Tape & Reel (T) |
Key Differentiators
- Extended-temperature drop-in option on the identical footprint (vs DSPIC33EP256MC206T-E/MR)
- Motor-control peripheral specialization vs general-purpose siblings (vs DSPIC33EP256GM306T-I/MR)
- Package choice trade-off: VQFN vs TQFP with same silicon (vs DSPIC33EP256MC206T-I/PT)
- Honest trade-off: single-distributor availability (vs DSPIC33EP256MC206T-E/MR)
Design Notes
On the 64-pin VQFN MR footprint, connect EVERY VDD and VSS pin pair. Per Microchip tooling documentation (northernsoftware.com device notes for dsPIC33EP256MC206), leaving even one supply pin unconnected can cause programming or debugging failure. Use the exposed pad as a solid ground connection with an array of vias to the ground plane; this serves both thermal dissipation and low-inductance grounding for the high-speed 70 MIPS core and fast PWM edges.
Keep the analog section (ADC inputs, on-chip op amp pins) physically separated from PWM output traces and gate-drive return paths on the 64-VQFN layout. Route current-sense shunt signals as Kelvin connections directly to the op amp/ADC pins, and place 100 nF decoupling ceramic capacitors within 2 mm of each VDD pin. Because the FOC loops sample in sync with PWM, residual switching coupling into the ADC front end appears as current-sense distortion that firmware cannot remove.
Estimated: at 70 MIPS with all PWM modules active, core current is typically in the tens of mA range (confirm exact ICC in DS70000657J), giving roughly 100-200 mV x I internal dissipation near 3.3V - usually under 0.7W. The exposed-pad VQFN keeps junction rise low with a modest ground-plane pour. However, if the board operates above 60C ambient, choose the DSPIC33EP256MC206T-E/MR (+125C grade) drop-in variant rather than the -I grade to preserve margin.
The -I temperature suffix and the MR package suffix are part of the ordering code: DSPIC33EP256MC206T-I/MR is NOT footprint-compatible with the -I/PT (TQFP) version despite identical silicon, and distribution stock is split across all suffix combinations (DigiKey lists I/PT and E/MR separately). Lock the exact MPN early in sourcing. Also verify the RAM figure used for buffer sizing against DS70000657J - distributor sources list conflicting RAM values (16KB vs 32KB) for this device.
Compliance Information
RoHS/lead-free inferred from current-generation Microchip VQFN packaging and distributor categorization; formal REACH, halogen-free and conflict-minerals certificates for this exact ordering code were not present in the provided data - verify on microchip.com.
