DSPIC33EP64MC204-I/M - 16-bit 70 MIPS DSC 64KB Flash | Microchip
MPN: DSPIC33EP64MC204-I/M ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.85 | $4.85 |
| 10 | $4.42 | $44.20 |
| 100 | $3.95 | $395.00 |
| 500 | $3.58 | $1,790.00 |
| 1,000 | $3.24 | $3,240.00 |
DSPIC33EP64MC204-I/M Overview
A digital signal controller combines the computational architecture of a microcontroller with the multiply-accumulate hardware of a DSP. In the power-management hierarchy, the dsPIC33E family sits between general-purpose MCUs and dedicated DSPs, making it the preferred choice when a single chip must execute closed-loop control algorithms (PID, field-oriented control) while managing communications and housekeeping tasks. Microchip's dsPIC33EP generation upgraded the older dsPIC33F family with faster 70 MIPS operation and enhanced analog and PWM peripherals.
Key features include the high-speed Motor Control PWM (MCPWM) module with complementary outputs and dead-time insertion, Quadrature Encoder Interface (QEI) inputs for direct rotor-position feedback, a 16-bit fixed-point DSP engine with single-cycle MAC and 40-bit accumulators, multiple 16-bit timers, and advanced analog peripherals for current-sense feedback. The core runs at 3.0V to 3.6V single-supply, and CMOS process technology keeps power consumption manageable at full clock speed.
Architecturally, the device uses a modified Harvard pipeline with separate program and data buses, supporting two operand fetches per cycle for DSP instructions such as MAC and MPY. This allows execution of control-loop math, coordinate transforms, and filter functions (FIR/IIR) without external compute resources, freeing the CPU for application logic.
Typical applications include brushless DC (BLDC) and permanent-magnet synchronous motor (PMSM) drives, power-factor-correction converters, digital UPS systems, and sensorless motor-control nodes in industrial automation and appliance platforms. The MCPWM plus QEI combination directly maps onto motor-control feedback requirements.
Designers should budget the 3.3V rail carefully: I/O banks and the core share the supply, so decouple each VDD pin with 0.1 uF ceramics placed close to the package, and verify Flash programming voltage requirements during in-circuit programming via ICSP.
This page synthesizes distributor data, same-family drop-in alternatives, and practical design guidance not consolidated in the Microchip datasheet.
Drop-in alternatives for DSPIC33EP64MC204-I/M — 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 DSPIC33EP64MC204-I/M (same form factor and footprint) — differing in Operating Temperature, Package, Core Architecture, Program Memory (Flash), RAM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP64MC204-I/ML
✅ Drop-In✓ In Stock
$3.6 / Unit
View Datasheet →DSPIC33EP64MC204-I/MV
✅ Drop-In✓ In Stock
$3.55 / Unit
View Datasheet →DSPIC33EP32MC204-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.05 / Unit
View Datasheet →DSPIC33EP128MC204-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.98 / Unit
View Datasheet →DSPIC33EP256MC204-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.4 / Unit
View Datasheet →DSPIC33EP64MC204-I/M Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E 16-bit DSC core |
| Max CPU Speed | 70 MIPS |
| Clock Frequency | 60 MHz |
| Flash Program Memory | 64 KB (22K x 24) |
| SRAM | 8 KB |
| Supply Voltage Range | 3 V to 3.6 V |
| Operating Temperature | -40C to +85C (industrial) |
| I/O Pins | 51 |
| Package Type | 44-pin QFN (PQCC), approx. 8x8 mm |
| Mounting Type | Surface Mount |
| PWM Module | Motor Control PWM (MCPWM), high-speed |
| Encoder Interface | Quadrature Encoder Interface (QEI) |
| Timers | Multiple 16-bit timers (up to 9 timer resources per family datasheet) |
| DSP Engine | Single-cycle MAC, 40-bit accumulators, fixed point |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
| Process Technology | CMOS |
| Lifecycle Status | Active |
DSPIC33EP64MC204-I/M 44-pin qfn (pqcc), approx. 8x8 mm Pin Configuration Guide
Pin configuration for DSPIC33EP64MC204-I/M (44-pin qfn (pqcc), approx. 8x8 mm 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 DSPIC33EP64MC204-I/M.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP64MC204-I/M is suitable for 6 applications: BLDC Motor Control, PMSM Servo Drives, Digital Power Conversion, Industrial Automation Nodes, Home Appliances, Embedded Signal Processing.
BLDC Motor Control
The DSPIC33EP64MC204-I/M is purpose-built for brushless DC motor drives: its high-speed Motor Control PWM module generates complementary outputs with programmable dead-time, while the Quadrature Encoder Interface reads rotor position directly from incremental encoders. The 70 MIPS DSP engine with single-cycle MAC executes field-oriented control inner loops at switching frequency, keeping current-loop latency deterministic. Placed as the sole controller between current-sense shunt amplifiers and a three-phase gate driver, it computes Park/Clarke transforms and PID terms in real time. The 64 KB Flash stores FOC firmware plus communication and protection logic; the 3.0V to 3.6V supply and -40C to +85C industrial range suit appliance and industrial drive environments.
Recommended
PMSM Servo Drives
For permanent-magnet synchronous motor servo systems, the DSPIC33EP64MC204-I/M supplies both the control bandwidth and the feedback interfaces servo designers need. The QEI module decodes quadrature encoder signals including index pulses for commutation alignment, while the MCPWM module drives an inverter stage at tens of kilohertz with dead-time protection. The 70 MIPS, 16-bit DSP engine performs position, velocity, and current cascaded loops with fixed-point math at 40-bit accumulator precision, minimizing quantization noise in torque control. With 51 I/O pins on the QFN-44 package, remaining pins handle limit switches, safety inputs, and serial links to a higher-level motion controller, allowing a single-chip servo axis design.
Recommended
Digital Power Conversion
Switch-mode power supplies, PFC stages, and digital UPS converters benefit from the DSPIC33EP64MC204-I/M's deterministic PWM generation and fast control-loop math. The MCPWM module supports phase-shifted and complementary topologies with fault-trip inputs, enabling safe shutdown within one PWM cycle on overcurrent events. The 70 MIPS DSP engine executes average-current-mode control and notch/notch-filter compensation at the switching frequency, with the 16-bit fixed-point architecture providing sufficient dynamic range for power-stage modeling. The 3.0V to 3.6V core supply integrates cleanly into auxiliary bias rails, and ICSP programming supports in-system firmware updates during production calibration of converter setpoints.
Recommended
Industrial Automation Nodes
In factory automation, the DSPIC33EP64MC204-I/M serves as an intelligent actuator or sensor node controller where signal processing and I/O coexist. Its 51 I/O pins, multiple 16-bit timers, and DSP engine allow it to sample analog sensors, filter readings with IIR algorithms, and drive actuators with the MCPWM module simultaneously. The -40C to +85C industrial temperature grade and QFN-44 footprint fit both DIN-rail controller boards and compact machinery-mounted electronics. The 64 KB Flash typically holds protocol firmware (Modbus-style serial handling), a state machine, and calibration tables, while the 8 KB SRAM buffers telemetry. ICSP enables field firmware updates without removing boards from machinery.
Recommended
Home Appliances
Appliance platforms such as washing machines, refrigerators, and HVAC blowers use the DSPIC33EP64MC204-I/M to drive variable-speed motors efficiently. Sensorless trapezoidal or FOC algorithms run on the 70 MIPS core using back-EMF or shunt-current feedback, with the MCPWM module providing the six-step or space-vector PWM outputs. The wide -40C to +85C operating range tolerates unconditioned appliance interiors, and the 3.3V single-rail supply simplifies the power design around mains-derived auxiliary supplies. The 64 KB Flash leaves room for self-diagnostics, fault logging, and communication firmware, while the QFN-44 package minimizes PCB area in cost-sensitive appliance main boards.
Recommended
Embedded Signal Processing
Beyond motor control, the DSPIC33EP64MC204-I/M functions as an embedded DSP for sensor conditioning and lightweight spectral processing. The hardware MAC and 40-bit accumulators accelerate FIR and IIR filtering, RMS computation, and Goertzel-based frequency detection at 70 MIPS, tasks that saturate conventional MCUs at equivalent clock rates. The QFN-44 package's 51 I/O pins interface ADC front ends and digital peripherals, while multiple 16-bit timers generate precise sampling interrupts for coherent acquisition. The industrial temperature grade and low 3.0V to 3.6V consumption make it appropriate for battery-backed and field-installed instrumentation where deterministic DSP throughput must coexist with MCU-style housekeeping in one 3.3V chip.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP64MC204-I/M — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP64MC204-I/ML | DSPIC33EP64MC204-I/MV | DSPIC33EP32MC204-I/ML | DSPIC33EP128MC204-I/ML | DSPIC33EP256MC204-I/ML |
|---|---|---|---|---|---|---|
| Package | 44-QFN | 44-QFN (8x8) - same | 44-QFN - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Flash Memory | 64 KB | 64 KB | 64 KB | 32 KB | 128 KB | 256 KB |
| Supply Voltage | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Motor Control Peripherals | MCPWM + QEI | MCPWM + QEI | MCPWM + QEI | MCPWM + QEI | MCPWM + QEI | MCPWM + QEI |
| Lifecycle Status | Active | Active | Active | Active | Active | Active |
Key Differentiators
- Motor-control peripheral set (vs DSPIC33EP64GP503-I/TL)
- Headroom for feature growth (vs DSPIC33EP32MC204-I/ML)
- Pin-count scaling within family (vs DSPIC33EP64MC202-I/SP)
Design Notes
The DSPIC33EP64MC204-I/M runs from a single 3.0V to 3.6V rail shared by core and I/O. Place a 0.1 uF ceramic capacitor at every VDD pin pair plus one bulk 4.7 uF to 10 uF capacitor near the package. Avoid routing motor PWM return currents under the QFN; keep the analog supply (AVDD/AVSS) filtered with an RC (for example 10 ohm + 1 uF) if ADC-based current sensing is used, because inverter switching noise degrades ADC accuracy.
The 44-QFN requires a solderable exposed pad (if present on this variant) or adequate via fanout for thermal relief. Use short, symmetric traces from MCPWM outputs to gate drivers to minimize dead-time mismatch between phases. Route QEI encoder inputs as a tightly matched pair away from PWM lines; encoder miscounts from coupled switching edges are a frequent field failure in drive designs using the dsPIC33EP MC family.
Verify the exact package suffix before tape-out: /ML, /MV, /PT, and /TL refer to different 44-pin packages, and only QFN suffixes are footprint-compatible with the -I/M part. Do not exceed the 3.6V absolute supply limit; 5V-tolerant claims should be checked against the datasheet pin tables. Configure configuration words (oscillator, watchdog, brown-out) in code - defaults will not yield 70 MIPS operation without PLL setup.
Compliance Information
Compliance status for this exact suffix was not stated in the provided web data. Modern Microchip dsPIC33EP catalog parts are typically RoHS-compliant; verify on the official Microchip product page before specifying.
