DSPIC33FJ128MC202-E/SO - 40 MIPS 16-bit Motor Control DSC | Microchip
MPN: DSPIC33FJ128MC202-E/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.1 | $6.10 |
| 10 | $5.52 | $55.20 |
| 100 | $4.78 | $478.00 |
| 500 | $4.25 | $2,125.00 |
| 1,000 | $3.86 | $3,860.00 |
DSPIC33FJ128MC202-E/SO Overview
A digital signal controller combines a 16-bit microcontroller (MCU) architecture with digital signal processor (DSP) functionality in a single chip. In the system hierarchy, the DSC sits between a general-purpose MCU and a dedicated DSP: it executes real-time control loops and math-intensive algorithms such as PID, transforms, and field-oriented motor control with DSP-engine multiply-accumulate instructions, while retaining the peripherals and interrupt structure of a classic microcontroller.
Key differentiating features include an extended temperature range of -40C to +125C with AEC-Q100 automotive qualification, two 3-phase motor control PWM modules with independent timebases, Peripheral Pin Select (PPS) for flexible peripheral mapping, and an advanced 10-bit ADC supporting simultaneous motor current sensing.
Architecturally, the dsPIC33FJ family shares a modified Harvard 16-bit core with the PIC24H family and is pin compatible with PIC24H devices, enabling seamless migration. DSP instructions and hardware loops let the device sustain 40 MIPS execution for high-speed repetitive computations without external assist.
Typical applications include brushless DC (BLDC) and permanent magnet synchronous motor (PMSM) drives, power factor correction converters, digital UPS systems, and industrial sensing nodes that demand deterministic real-time control in a small footprint.
Design consideration: the 40 MIPS instruction cycle derives from an internal PLL on the 3.3 V rail, so follow Microchip's power decoupling guidance on all VDD/AVDD pins and route PWM outputs away from the analog inputs.
This page synthesizes distributor pricing, same-family drop-in alternatives, pinout data, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ128MC202-E/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 DSPIC33FJ128MC202-E/SO (same form factor and footprint) — differing in Operating Temperature, Programming Interface, Mounting Type, Package, Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ128MC202-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.05 / Unit
View Datasheet →DSPIC33FJ128MC202-E/SP
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.79 / Unit
View Datasheet →DSPIC33FJ64MC202-E/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32MC202-E/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ16MC202-E/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ128MC202-E/SO Maximum Ratings & Electrical Characteristics
| Core | dsPIC33F 16-bit DSC |
| Instruction Speed | up to 40 MIPS |
| Flash Memory | 128 KB (128K x 8) |
| SRAM | 16 KB |
| Supply Voltage | 3.3 V |
| Operating Temperature | -40C to +125C (E grade, automotive) |
| Package | 28-SOIC (0.295 in, 7.50 mm width) |
| Mounting Type | Surface Mount |
| Qualification | AEC-Q100 (automotive) |
| Series | dsPIC 33F, Motor Control family |
| Special Peripherals | Motor Control PWM, DMA |
| Pin Compatibility | Compatible with PIC24H family |
| Pin Count | 28 |
| Packaging Option | Tube |
| Programming Interface | ICSP via PGECx/PGEDx pairs |
DSPIC33FJ128MC202-E/SO Pin Configuration
| Pin 1 | MCLR — Master clear reset / programming voltage input |
| Pin 2 | AN0/VREF+/CN2/RB0 — Analog input 0 / positive voltage reference / change notification |
| Pin 3 | AN1/VREF-/CN3/RB1 — Analog input 1 / negative voltage reference / change notification |
| Pin 4 | AN2/SS1/CN4/RB2 — Analog input 2 / SPI slave select 1 / change notification |
| Pin 5 | AN3/INDX/CN5/RB3 — Analog input 3 / quadrature index / change notification |
| Pin 6 | AN4/QEA/IC7/CN6/RB4 — Analog input 4 / quadrature A input / input capture 7 |
| Pin 7 | VDD — Digital power supply (3.3 V) |
| Pin 8 | VSS — Digital ground |
| Pin 9 | OSC1/CLKI — Oscillator input / external clock input |
| Pin 10 | OSC2/CLKO/RC15 — Oscillator output / clock output / port RC15 |
| Pin 11 | RF2/U1RX/SDI1/EMUD1 — UART1 receive / SPI data in / emulation |
| Pin 12 | RF3/U1TX/SDO1/EMUC1 — UART1 transmit / SPI data out / emulation |
| Pin 13 | RF4/SCL1/EMUD3 — I2C1 clock / emulation |
| Pin 14 | RF5/SDA1/EMUC3 — I2C1 data / emulation |
| Pin 15 | VSS — Digital ground |
| Pin 16 | VDD — Digital power supply (3.3 V) |
| Pin 17 | RF12/PGED3/EMUD0 — Port RF12 / programming data channel 3 / emulation |
| Pin 18 | RF13/PGEC3/EMUC0 — Port RF13 / programming clock channel 3 / emulation |
| Pin 19 | RE0/PWM1L1 — PWM1 low-side output 1 / port RE0 |
| Pin 20 | RE1/PWM1H1 — PWM1 high-side output 1 / port RE1 |
| Pin 21 | RE2/PWM1L2 — PWM1 low-side output 2 / port RE2 |
| Pin 22 | RE3/PWM1H2 — PWM1 high-side output 2 / port RE3 |
| Pin 23 | RE4/PWM1L3 — PWM1 low-side output 3 / port RE4 |
| Pin 24 | RE5/PWM1H3 — PWM1 high-side output 3 / port RE5 |
| Pin 25 | RE8/PGED2 — Port RE8 / programming data channel 2 |
| Pin 26 | RE9/PGEC2 — Port RE9 / programming clock channel 2 |
| Pin 27 | AVDD — Analog power supply (3.3 V) |
| Pin 28 | AVSS — Analog ground |
Typical Applications
DSPIC33FJ128MC202-E/SO is suitable for 6 applications: BLDC / PMSM Motor Control, Digital Power Conversion, Automotive Auxiliary Actuators, Industrial Sensing and Condition Monitoring, Embedded Audio and Signal Processing, RC Servo and Robotics Control.
BLDC / PMSM Motor Control
The DSPIC33FJ128MC202-E/SO is purpose-built for precision motor control: its dsPIC33F core sustains 40 MIPS, enough to close field-oriented control (FOC) current loops at 20-50 kHz PWM frequencies with DSP multiply-accumulate instructions. Two 3-phase motor-control PWM modules with independent timebases, dead-time insertion, and complementary outputs drive three-phase inverters directly, while the 10-bit ADC samples phase currents with motor-control PWM triggering for synchronized capture. The E-grade -40C to +125C AEC-Q100 qualification suits automotive pumps, fans, and actuators. Firmware for sensorless observers and lookup tables fits comfortably in the 128 KB Flash, with 16 KB SRAM holding control states and compensation variables.
Recommended
Digital Power Conversion
In switch-mode power supplies, power factor correction (PFC), and digital UPS systems, the DSPIC33FJ128MC202-E/SO replaces analog control loops with firmware-defined control at 40 MIPS. The motor-control PWM modules provide high-resolution complementary outputs with programmable dead time for half-bridge and full-bridge stages, and DMA offloads ADC result transfers so the CPU maintains deterministic loop timing. A 3.3 V supply and 28-SOIC footprint let the controller sit directly on the power board near gate drivers. The 128 KB Flash accommodates multiple operating modes (CCM, burst, protection state machines) plus a bootloader for field firmware updates in deployed power products.
Recommended
Automotive Auxiliary Actuators
The AEC-Q100 qualification and -40C to +125C E-grade rating make the DSPIC33FJ128MC202-E/SO suitable for automotive auxiliary drives: HVAC blower motors, coolant pumps, throttle actuators, and wiper systems. Motor-control PWM with fault inputs enables hardware shutdown on overcurrent, while Peripheral Pin Select remaps UART/CAN-adjacent peripherals to fit existing wiring loom interface designs. The 128 KB Flash supports dual-bank firmware strategies for OTA-style updates. Designers should verify the target OEM's EMC requirements with the PWM switching frequency, as the 28-SOIC package limits power dissipation - the DSC controls the drive, while a discrete gate driver stage handles motor current.
Recommended
Industrial Sensing and Condition Monitoring
For vibration, current, and acoustic condition monitoring, the DSPIC33FJ128MC202-E/SO's DSP engine executes FFT and FIR filtering at 40 MIPS while the MCU peripherals handle sensor interfaces over UART/SPI/I2C. The 16 KB SRAM buffers time-domain samples for spectral analysis, and the 10-bit ADC with DMA streams data without CPU intervention. The 128 KB Flash holds both acquisition firmware and onboard classification routines, enabling standalone edge decisions without a host processor. The wide -40C to +125C E-grade suits motor-mounted sensors near hot machinery, and the 28-SOIC package fits compact sensor heads with minimal PCB area.
Recommended
Embedded Audio and Signal Processing
The dsPIC33F DSP engine with 40-bit accumulators and dual fetch executes audio filters, tone generation, and acoustic processing at 40 MIPS, making the DSPIC33FJ128MC202-E/SO viable for industrial intercoms, alarm tone synthesis, and active noise attenuation prototypes. SPI and UART interfaces connect to audio codecs, and DMA keeps sample rates deterministic. Although not a dedicated audio DSP, its 128 KB Flash supports substantial coefficient tables and multichannel processing in one 3.3 V, 28-pin device. The extended temperature grade permits audio electronics inside outdoor or engine-bay-adjacent enclosures where consumer codecs would exceed ratings.
Recommended
RC Servo and Robotics Control
Robotics joint controllers benefit from the DSPIC33FJ128MC202-E/SO's combination of 40 MIPS real-time loop closure and motor-control PWM with 4 PWM generator channels for multi-axis small robots or gimbal motors. Current-loop FOC per axis runs in the DSP engine while UART/CAN handles higher-level communication with the robot controller. Peripheral Pin Select simplifies routing encoder inputs to the QEA/QEB quadrature-capable pins. The 128 KB Flash supports trajectory interpolation and safety limits onboard, and the -40C to +125C range survives outdoor robotics and drone-adjacent actuator environments in the small 28-SOIC outline.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ128MC202-E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ128MC202-I/SO | DSPIC33FJ128MC202-E/SP | DSPIC33FJ64MC202-E/SO | DSPIC33FJ32MC202-E/SO |
|---|---|---|---|---|---|
| Package | 28-SOIC (7.50 mm) | 28-SOIC (7.50 mm) - same | 28-SPDIP (through-hole) | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 128 KB | 128 KB | 128 KB | 64 KB | 32 KB |
| SRAM | 16 KB | 16 KB | 16 KB | 8 KB | 4 KB |
| Core Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Operating Temperature | -40C to +125C | -40C to +85C | -40C to +125C | -40C to +125C | -40C to +125C |
| AEC-Q100 Qualification | Qualified (automotive) | No (industrial grade) | Qualified (automotive) | Qualified (automotive) | Qualified (automotive) |
Key Differentiators
- Extended automotive temperature range (vs DSPIC33FJ128MC202-I/SO)
- Largest Flash in the MC202 28-SOIC family (vs DSPIC33FJ64MC202-E/SO)
- Same function, SMT-optimized footprint (vs DSPIC33FJ128MC202-E/SP)
Design Notes
Connect all VDD (pins 7, 16) and AVDD (pin 27) pins with independent decoupling: 0.1 uF ceramic per pin plus one 4.7-10 uF bulk capacitor per supply domain. AVDD should be filtered (ferrite bead + capacitor) from the digital VDD rail so the ADC reference sees quiet supply noise. Estimated: a motor drive switching 20 kHz PWM on six SOIC I/O will inject di/dt noise onto VSS; a solid ground plane under the 28-SOIC keeps ground bounce within ADC resolution limits.
Route the motor-control PWM outputs (pins 19-24) away from analog inputs RB0-RB4 (pins 2-6) to prevent switching noise coupling into the 10-bit ADC. Keep the crystal on OSC1/OSC2 (pins 9-10) within 10-12 mm of the device with short traces and guard with ground. MCLR (pin 1) needs a 4.7-10 k pull-up and an ICSP header wired to a matched PGECx/PGEDx pair (pins 25/26 or 17/18) - use PGEC2/PGED2 as a pair, never mixing channels.
Do not power the device above 3.6 V - the dsPIC33FJ family is a 3.3 V core with no 5 V tolerance on standard I/O; level-shift or use series resistors when interfacing 5 V peripherals. Verify code fits the chosen Flash size before substituting a smaller FJ32/FJ16 variant. The '-E' grade (-40C to +125C) is required for automotive/enclosed hot environments - do not substitute the '-I' 85C part in engine-bay or sealed-enclosure applications without thermal derating analysis.
Compliance Information
Distributor listings (Hotenda) categorize this part as 'Automotive, AEC-Q100'. RoHS status is typical for active Microchip SOIC parts; confirm RoHS/REACH certificates on the Microchip product page.
