DSPIC33FJ64MC202-I/SO - 16-bit DSC 40MIPS 64KB Flash | Microchip
MPN: DSPIC33FJ64MC202-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.62 | $5.62 |
| 10 | $5.05 | $50.50 |
| 100 | $4.49 | $449.00 |
| 500 | $4.05 | $2,025.00 |
| 1,000 | $3.62 | $3,620.00 |
DSPIC33FJ64MC202-I/SO Overview
A digital signal controller combines the computational throughput of a digital signal processor with the deterministic control peripherals of a microcontroller. Within the power-management hierarchy, a DSC sits above a general-purpose MCU: it adds a DSP engine, hardware multiply-accumulate (MAC) instructions, and motor-control PWM peripherals, making the dsPIC33F family a staple in closed-loop power electronics where firmware must execute proportional-integral control loops at tens of kilohertz.
Key features of the DSPIC33FJ64MC202 include the 16-bit modified Harvard architecture with DSP instruction support, up to 40 MIPS operation from an internal PLL, DMA channels for peripheral-to-memory transfers without CPU intervention, and a rich analog block. Per the dsPIC33FJ64MC202 datasheet family documentation (460-page family reference covering up to 128 KB Flash and 16 KB SRAM variants), the device integrates a 10/12-bit ADC, comparators, and motor-control PWM outputs suited to three-phase inverter drive.
Technically, the dsPIC33F core operates from a 3.0V to 3.6V supply, provides 21 I/O ports in the 28-pin version, and is pin compatible with the PIC24HJ family, allowing seamless migration between Microchip 16-bit platforms. Flash-based program memory supports in-circuit serial programming (ICSP) via PGEC/PGD pin pairs, simplifying field updates.
Typical applications include brushless DC and permanent-magnet synchronous motor control, switch-mode power supplies and digital power factors correction, and digital audio or sensor signal processing where repetitive MAC-intensive loops dominate.
Design-wise, budget the 3.0-3.6V rail early; the device is not 5V tolerant across all pins, and decouple all VDD/AVDD pairs with 0.1 uF ceramics placed within 5 mm of the pins.
This page synthesizes distributor inventory, drop-in alternative cross-references, and practical design notes not found in the manufacturer datasheet, with pricing as of 2026-09-27.
Drop-in alternatives for DSPIC33FJ64MC202-I/SO — 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 DSPIC33FJ64MC202-I/SO (same form factor and footprint) — differing in Core Architecture, Operating Temperature, Supply Voltage, Package, Packaging.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ32MC202-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ64MC202-E/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32MC202-E/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.55 / Unit
View Datasheet →PIC24HJ64GP202-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24HJ32GP202-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ64MC202-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F modified Harvard |
| Max CPU Speed | 40 MIPS |
| Program Memory (Flash) | 64 KB |
| Supply Voltage | 3 V to 3.6 V |
| I/O Ports | 21 |
| Package | 28-pin SOIC (SO) |
| Operating Temperature | -40C to +85C (I grade) |
| Memory Type | Flash |
| DMA | Yes |
| Motor Control PWM | Yes |
| Pin Compatibility | PIC24HJ family pin compatible |
| Programming Interface | ICSP (2-wire PGEC/PGED pairs) |
| Mounting Type | Surface Mount |
| Lead Finish | Lead free |
| RoHS Status | Compliant |
| Lifecycle Status | Active |
DSPIC33FJ64MC202-I/SO Pin Configuration
| Pin 1 | MCLR — Master clear reset input / programming voltage |
| Pin 2 | AN0/VREF+/CN2/RB0 — Analog input 0 / positive ADC reference / I/O RB0 |
| Pin 3 | AN1/VREF-/CN3/RB1 — Analog input 1 / negative ADC reference / I/O RB1 |
| Pin 4 | AN2/SS1/CN4/RB2 — Analog input 2 / SPI slave select / I/O RB2 |
| Pin 5 | AN3/INDX/CN5/RB3 — Analog input 3 / QEI index input / I/O RB3 |
| Pin 6 | AN4/QEA/IC7/CN6/RB4 — Analog input 4 / QEI phase A / capture 7 / I/O RB4 |
| Pin 7 | AN5/QEB/IC8/CN7/RB5 — Analog input 5 / QEI phase B / capture 8 / I/O RB5 |
| Pin 8 | VSS — Digital ground |
| Pin 9 | OSC1/CLKI/CN12/RA2 — Oscillator crystal input / external clock input |
| Pin 10 | OSC2/CLKO/RC15 — Oscillator crystal output / clock output / I/O RC15 |
| Pin 11 | PGD/EMUD1/SDA1/T2CK/U1ATX/CN1/RB6 — ICSP data / debug channel / I2C data / Timer2 clock / I/O RB6 |
| Pin 12 | PGC/EMUC1/SCL1/T3CK/U1ARX/CN0/RB7 — ICSP clock / debug channel / I2C clock / Timer3 clock / I/O RB7 |
| Pin 13 | VDD — Digital power supply (3.0V to 3.6V) |
| Pin 14 | RP14/CTED2/T2CK/IC1/RB8 — Remappable pin RP14 / CTMU edge 2 / capture 1 / I/O RB8 |
| Pin 15 | RP13/CTED1/T3CK/IC2/RB9 — Remappable pin RP13 / CTMU edge 1 / capture 2 / I/O RB9 |
| Pin 16 | RP12/OC1/T1CK/RB10 — Remappable pin RP12 / output compare 1 / Timer1 clock / I/O RB10 |
| Pin 17 | RP11/OC2/CN13/RB11 — Remappable pin RP11 / output compare 2 / I/O RB11 |
| Pin 18 | RP10/OC3/U1TX/RB12 — Remappable pin RP10 / output compare 3 / UART1 TX / I/O RB12 |
| Pin 19 | RP9/OC4/U1RX/RB13 — Remappable pin RP9 / output compare 4 / UART1 RX / I/O RB13 |
| Pin 20 | VDD — Digital power supply (3.0V to 3.6V) |
| Pin 21 | VSS — Digital ground |
| Pin 22 | RP8/SOSCI/T5CK/CN14/RB14 — Remappable pin RP8 / secondary oscillator input / Timer5 clock / I/O RB14 |
| Pin 23 | RP7/SOSCO/T4CK/CN15/RB15 — Remappable pin RP7 / secondary oscillator output / Timer4 clock / I/O RB15 |
| Pin 24 | RP6/U2RX/IC3/RF4 — Remappable pin RP6 / UART2 RX / capture 3 / I/O RF4 |
| Pin 25 | RP5/U2TX/IC4/RF5 — Remappable pin RP5 / UART2 TX / capture 4 / I/O RF5 |
| Pin 26 | RP4/SCL2/IC5/RF6 — Remappable pin RP4 / I2C2 clock / capture 5 / I/O RF6 |
| Pin 27 | RP3/SDA2/IC6/RF7 — Remappable pin RP3 / I2C2 data / capture 6 / I/O RF7 |
| Pin 28 | AVDD — Analog power supply (3.0V to 3.6V) |
Typical Applications
DSPIC33FJ64MC202-I/SO is suitable for 6 applications: Brushless DC / PMSM Motor Control, Digital Power Supplies / SMPS, Industrial Automation and Control Nodes, Digital Audio and Signal Processing, Sensor Signal Conditioning and Data Acquisition, Embedded Control and IoT Edge Devices.
Brushless DC / PMSM Motor Control
The DSPIC33FJ64MC202-I/SO fits three-phase BLDC and PMSM drive because its dsPIC33F core sustains 40 MIPS with hardware MAC instructions for field-oriented control, while dedicated motor-control PWM outputs generate complementary dead-time-gated gate signals for a six-switch inverter. In a typical 20 kHz FOC loop, the controller executes Clarke/Park transforms, PI current regulators, and space-vector modulation well within the PWM period, leaving DMA to move ADC results without CPU stalls. Running from a 3.3V rail with 21 I/O, it also handles gate-driver interfacing, encoder or Hall feedback capture, and UART/CAN host communication on one chip. The trade-off versus a dedicated motor ASIC is software development effort, offset by complete control-law flexibility.
Recommended
Digital Power Supplies / SMPS
Switch-mode power supplies and power-factor-correction stages benefit from the DSPIC33FJ64MC202-I/SO's combination of fast ADC sampling, DMA, and PWM peripherals that support complementary outputs with programmable dead time. A 200-500 kHz buck or boost converter requires control-loop updates every 2-5 microseconds; the 40 MIPS core with DSP MAC instructions executes the compensation algorithm in a fraction of that window, while DMA streams current/voltage samples without interrupt jitter. Firmware-based control enables soft-start profiling, nonlinear gain scheduling, and adaptive dead-time optimization that fixed analog controllers cannot offer. Design consideration: budget the 3.0-3.6V supply and route the analog ground carefully so switching noise does not corrupt ADC readings.
Recommended
Industrial Automation and Control Nodes
In factory automation, the DSPIC33FJ64MC202-I/SO serves as a compact intelligent node for actuators, pumps, and conveyors, where the -40C to +85C industrial temperature rating covers unconditioned cabinets and the 64 KB Flash holds control plus communication stacks. The 21 I/O ports and peripherals with DMA let one chip close a local control loop while servicing UART, SPI, or I2C links to a PLC or SCADA host. Repetitive PID computations at kilohertz rates exploit the DSP engine, and ICSP programming enables field firmware updates without desoldering. Because it is pin compatible with the PIC24HJ family, OEMs can reuse one PCB across non-DSP and DSP product grades, reducing inventory complexity and qualification cost across an automation product line.
Recommended
Digital Audio and Signal Processing
Audio applications such as active crossovers, effects processors, and microphone-array front ends exploit the DSPIC33FJ64MC202-I/SO's multiply-accumulate engine for FIR and IIR filtering at 40 MIPS. Processing a two-channel 48 kHz stream leaves ample cycle margin for biquad cascades, dynamics processing, and soft interpolation. On-chip SPI and UART interfaces connect to audio codecs or DACs, while the 3.0-3.6V supply keeps power consumption low enough for portable or always-on installations. The 64 KB Flash stores filter coefficient sets and preset management alongside the processing kernel. Compared with a dedicated DSP, integration is the advantage: one SOIC-28 device handles control, communication, and signal math, though floating-point-heavy algorithms must be fixed-point converted.
Recommended
Sensor Signal Conditioning and Data Acquisition
The DSPIC33FJ64MC202-I/SO consolidates analog front-end control and digital post-processing for sensors such as pressure bridges, thermocouples, and MEMS accelerometers. Its ADC, DMA, and DSP MAC chain supports oversampling and averaging schemes that push effective resolution beyond the converter base rating, while comparators provide fast threshold alarms independent of software latency. The -40C to +85C rating suits outdoor and industrial sensing, and the 21 I/O drive local actuators or status indicators directly. With 64 KB Flash, calibration tables and compensation curves for multiple sensor types fit on-chip, and ICSP permits recalibration firmware updates in the field. Keep AVDD well decoupled with 0.1 uF ceramics and separate the analog ground return to preserve converter accuracy.
Recommended
Embedded Control and IoT Edge Devices
For embedded edge controllers that bridge sensing and actuation, the DSPIC33FJ64MC202-I/SO offers deterministic real-time behavior without an RTOS tax: interrupt latency is short and predictable at 40 MIPS, and DMA offloads peripheral traffic so the core stays available for protocol handling. The 28-pin SOIC conserves board area in dense nodes, the industrial temperature range covers unconditioned environments, and the Flash-based memory supports ICSP field upgrades as product firmware evolves. UART, SPI, and I2C interfaces connect to Wi-Fi or LoRa modules, letting this DSC handle motor, power, or DSP-heavy local tasks while a radio module manages the network stack. Migration flexibility to pin-compatible PIC24HJ parts protects the design against long-term supply shifts.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ64MC202-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ32MC202-I/SO | DSPIC33FJ64MC202-E/SO | DSPIC33FJ32MC202-E/SO | PIC24HJ64GP202-I/SO | PIC24HJ32GP202-I/SO |
|---|---|---|---|---|---|---|
| Package | 28-SOIC (SO) | 28-SOIC (SO) - same | 28-SOIC (SO) - same | 28-SOIC (SO) - same | 28-SOIC (SO) - same | 28-SOIC (SO) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | ||
| Core / MIPS | dsPIC33F, 40 MIPS | dsPIC33F, 40 MIPS | dsPIC33F, 40 MIPS | PIC24HJ MCU core | ||
| Program Flash | 64 KB | 32 KB | 64 KB | 32 KB | 64 KB class | 32 KB class |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | ||
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +125C | -40C to +85C | |
| Motor Control PWM / DSP | Yes (MC variant) | Yes (MC variant) | Yes (MC variant) | Standard PIC24 peripherals (GP variant) |
Key Differentiators
- Double the program memory of the closest drop-in (vs DSPIC33FJ32MC202-I/SO)
- Extended temperature option on the same footprint (vs DSPIC33FJ64MC202-E/SO)
- DSP-enhanced core vs general-purpose pin-compatible MCU (vs PIC24HJ64GP202-I/SO)
Design Notes
The DSPIC33FJ64MC202 operates only from 3.0V to 3.6V. Regulate from a 5V bus with a 3.3V LDO or buck rated for at least 100 mA of controller and I/O load. Decouple both VDD pins and AVDD each with 0.1 uF ceramic capacitors placed within 5 mm of the pins, plus one 4.7-10 uF bulk capacitor near the device. AVDD should be filtered (ferrite bead plus 0.1 uF and 1 uF) to maximize ADC accuracy, since switching noise on the analog rail directly appears in conversion results.
Use the ICSP header on one chosen PGECx/PGEDx pair - RB6/RB7 (PGEC1/PGED1) is the conventional choice per the NSDSP programming notes. Do not load that pair with high-speed circuitry; series 100-470 ohm resistors isolate the programmer from external loads and prevent contention during debug. Keep the crystal (OSC1/OSC2) traces under 15 mm with ground guard, and place 0.1 uF caps on both crystal pins if using the primary oscillator above 8 MHz for full-speed 40 MIPS PLL operation.
Three frequent mistakes: (1) assuming 5V tolerance - the dsPIC33F is a 3.3V device and inputs must not exceed VDD plus limits; level-shift any 5V signals. (2) Using PGEC/PGED pairs inconsistently - ICSPCLK and ICSPDAT must come from the same numbered pair, or programming will fail. (3) Ignoring errata - check the current Microchip dsPIC33FJ family errata sheet before tape-out, as revisions have documented ADC and oscillator issues in early die steppings.
Compliance Information
Package described as 'LEAD FREE, PLASTIC' in digchip specification listing; RoHS compliant per Microchip standard production. Not AEC-Q100 qualified per available data.
