DSPIC33CK128MC502-I/SS - 16-bit 100MHz DSC, CAN FD | Microchip
MPN: DSPIC33CK128MC502-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.05 | $4.05 |
| 10 | $3.65 | $36.50 |
| 100 | $3.27 | $327.00 |
| 500 | $2.94 | $1,470.00 |
| 1,000 | $2.64 | $2,640.00 |
DSPIC33CK128MC502-I/SS Overview
A Digital Signal Controller combines the compute characteristics of a microcontroller with the arithmetic throughput of a digital signal processor. Within the embedded hierarchy, the dsPIC33CK family sits between general-purpose MCUs and dedicated DSPs: it executes single-cycle MAC and DSP instructions while retaining the peripherals, interrupt structure and development ecosystem of a standard MCU. This makes DSCs the default choice where control loops and signal processing converge, such as digital power conversion and motor control.
Key features of this part include the CAN Flexible Data-Rate (CAN FD) module for modern in-vehicle and industrial networks, a high-speed PWM peripheral with fine edge resolution for power conversion, and integrated analog: a 12-bit ADC and on-chip operational amplifiers that reduce external component count in current-sense and feedback paths. The 100 MHz core delivers roughly 100 MIPS of throughput, sufficient for field-oriented motor control at high PWM frequencies.
Architecturally, the dsPIC33CK core features an enhanced instruction set with DSP engine support, independent program and data buses for parallel operand fetches, and up to three DAC outputs and multiple ADC core options in the family. The dual-partition Flash variant support in the wider family enables live firmware updates, an important capability in field-deployed industrial equipment.
Typical applications include brushless DC and PMSM motor drives, digital switched-mode power supplies (totem-pole PFC, LLC converters), automotive and industrial CAN FD nodes, and high-performance general embedded control.
Design-wise, plan the analog front end around the on-chip op-amp gain configurations and route high-current PWM traces away from the ADC inputs; the ICSP programming pairs (PGECx/PGEDx) must be used as matched pairs.
This page synthesizes distributor availability data, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for DSPIC33CK128MC502-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 DSPIC33CK128MC502-I/SS (same form factor and footprint) — differing in ADC Resolution, Operating Temperature, CAN Interface, Core Architecture, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK128MC502-E/SS
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK128MC502T-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
Contact for price
View Datasheet →DSPIC33CK256MC502-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.77 / Unit
View Datasheet →DSPIC33CK64MC502-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK32MC502-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK128MC502-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC DSC |
| Maximum CPU Speed | 100 MHz |
| Program Memory Size | 128 KB Flash (128K x 8) |
| RAM Size | 16 KB |
| CAN Interface | CAN FD (Flexible Data-Rate) |
| ADC Resolution | 12-bit |
| On-chip Op-Amps | Yes |
| PWM | High-Speed PWM |
| Package | 28-SSOP |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (I grade) |
| Communication Interfaces | CAN FD, UART, SPI, I2C |
| Programming Interface | ICSP (PGECx/PGEDx pairs) |
| RoHS Status | Compliant |
DSPIC33CK128MC502-I/SS 28-ssop Pin Configuration Guide
Pin configuration for DSPIC33CK128MC502-I/SS (28-ssop 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 DSPIC33CK128MC502-I/SS.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK128MC502-I/SS is suitable for 6 applications: BLDC / PMSM Motor Control, Digital Power Conversion, CAN FD Industrial Network Nodes, High-Performance General Embedded Control, Battery Management and Charging Systems, E-mobility and Light Electric Vehicles.
BLDC / PMSM Motor Control
The dsPIC33CK128MC502-I/SS is engineered for brushless DC and permanent-magnet synchronous motor drives. Its 100 MHz dsPIC core executes field-oriented control (FOC) current loops at PWM frequencies well above the audible range, using single-cycle DSP multiply-accumulate instructions for Clark/Park transforms. The high-speed PWM peripheral provides fine duty-cycle resolution, while the 12-bit ADC and on-chip operational amplifiers condition shunt-based phase current feedback without external amplifiers. The 28-pin SSOP footprint fits compact gate-driver boards. Firmware can be developed with Microchip Motor Control libraries and MCLV/MCHV reference hardware, shortening time to market for servo drives, e-bike controllers, and industrial pump fans.
Recommended
Digital Power Conversion
Digital switched-mode power supplies benefit directly from this DSC's architecture. In totem-pole PFC, LLC, or buck converters, the high-speed PWM module generates complementary outputs with dead-time control and fine edge resolution, while the 100 MHz core closes voltage and current loops digitally. The 12-bit ADC provides high-speed sampling of output voltage and inductor current, and the on-chip op-amps scale current-shunt signals. The 128 KB Flash accommodates compensator code, protection state machines, and communication stacks simultaneously. Typical designs pair the controller with isolated gate drivers and feedback devices on the secondary side, using the CAN FD or UART interface for telemetry and PMBus-style supervision.
Recommended
CAN FD Industrial Network Nodes
With an integrated CAN Flexible Data-Rate module, the dsPIC33CK128MC502-I/SS is a strong fit for industrial and automotive network nodes that must bridge control and communication on one chip. The CAN FD peripheral supports the higher payload and bit-rate switching of the FD protocol, enabling use in CANopen, CANopen Lift, and J1939-FD style networks. The 100 MHz core leaves ample headroom to run the application control loop and protocol stack concurrently. Typical deployments include sensor/actuator nodes, motor-drive communication gateways, and building automation endpoints. An external CAN FD transceiver with proper common-mode termination is the only additional network component required.
Recommended
High-Performance General Embedded Control
For general embedded systems needing more arithmetic throughput than a conventional 16-bit MCU, the dsPIC33CK128MC502-I/SS provides roughly 100 MIPS with DSP acceleration while retaining familiar MCU peripherals: UART, SPI, I2C, timers, and capture/compare modules. The 128 KB Flash and 16 KB RAM support mid-size application code with protocol stacks and data logging. Applications include power monitoring instruments, digital filters in sensing front ends, charging management, and closed-loop process control. C development with the free-tier Microchip compiler family, plus MPLAB X IDE and the Curiosity/PICkit debug tools, keeps the software ecosystem low-cost and well documented for single-developer teams.
Recommended
Battery Management and Charging Systems
Battery chargers and BMS nodes exploit this DSC's combination of precision analog and fast control. The 12-bit ADC samples cell voltages, pack current, and temperature, while the on-chip op-amps provide gain staging for shunt measurements. The high-speed PWM drives synchronous buck/boost charger power stages with deterministic dead time, supporting CC/CV charging profiles and MPPT-style sourcing from photovoltaic inputs. The CAN FD interface links the pack to vehicle or inverter controllers per J1939-style networks. The 128 KB Flash holds state-of-charge algorithms, protection logic, and logging. With the industrial temperature rating of -40C to +85C, the -I/SS grade covers typical garage and outdoor equipment environments.
Recommended
E-mobility and Light Electric Vehicles
E-scooters, e-bikes, and light EV subsystems combine all of this DSC's strengths in one 28-pin part: FOC motor control of the hub or mid-drive motor, CAN FD communication with the battery and display, and 100 MHz headroom for traction and safety logic concurrently. The industrial temperature grade suits exposed vehicle electronics, and the SSOP-28 footprint keeps controller boards compact for handlebar or frame mounting. Firmware can implement sensorless or encoder-based commutation, torque ramp limiting, regenerative braking, and fault diagnostics. Development is accelerated by Microchip's motor-control reference designs and libraries targeting the dsPIC33CK family, reducing validation risk for safety-relevant drive behavior.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK128MC502-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK128MC502-E/SS | DSPIC33CK256MC502-I/SS | DSPIC33CK64MC502-I/SS |
|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 100 MHz | 100 MHz | 100 MHz | 100 MHz |
| Flash Memory | 128 KB | 128 KB | 256 KB | 64 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB |
| Operating Temperature | -40C to +85C | Extended grade | -40C to +85C | -40C to +85C |
| CAN FD | Yes | Yes | Yes | Yes |
| ADC / Op-Amps / High-Speed PWM | 12-bit ADC, op-amps, HS PWM | Same peripheral set | Same peripheral set | Same peripheral set |
Key Differentiators
- Integrated CAN FD in a 28-pin controller (vs DSPIC33CK64MC502-I/SS)
- Cost-optimized capacity ceiling (vs DSPIC33CK256MC502-I/SS)
- Guaranteed industrial temperature coverage (vs DSPIC33CK128MC502-E/SS)
Design Notes
Place a 100 nF ceramic decoupling capacitor directly across each VDD/VSS pin pair with the shortest possible return path, plus one bulk capacitor (4.7 uF to 10 uF) near the device. Keep the VDD plane solid under the DSC. Route the PWM outputs away from analog inputs feeding the 12-bit ADC and the on-chip op-amp inputs; a guard ground trace between PWM and analog routing materially improves ADC noise floor in motor-control layouts.
The ICSP programming interface uses PGECx/PGEDx pairs that must be wired as matched pairs - if PGEC2 carries ICSPCLK, ICSPDAT must connect to PGED2 (per Microchip dsPIC33CK128MC502 programming documentation). Ensure MCLR is pulled up and accessible on the programming header. Do not assign PGECx/PGEDx pins to high-capacitance loads (LEDs, long traces), as this breaks programming and debugging.
Estimated: when substituting the /SS footprint with memory variants (64/256 KB), verify that the selected ordering code matches your compiled firmware size with at least 20% Flash headroom for OTA-style updates, and confirm the exact supply voltage range in the electrical characteristics section of the manufacturer datasheet before freezing the power tree, since the retrieved web data did not state it explicitly.
Compliance Information
RoHS compliance and lead-free finish per standard current-production Microchip 28-SSOP ordering code. REACH, halogen-free, and conflict-minerals declarations not stated in retrieved data - consult Microchip environmental documentation.
