DSPIC33CK128MC502T-I/SS - 100MHz 16-bit DSC 128KB Flash | Microchip
MPN: DSPIC33CK128MC502T-I/SS ✓ Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
DSPIC33CK128MC502T-I/SS Overview
A Digital Signal Controller combines the computational throughput of a digital signal processor (DSP) with the peripheral integration and deterministic control of a microcontroller (MCU). Within the embedded-systems hierarchy, DSCs sit between general-purpose MCUs and dedicated DSPs, making them the preferred choice for closed-loop, time-critical control loops such as field-oriented motor control and digitally controlled power supplies.
Key differentiating features include integrated operational amplifiers for current-sense signal conditioning, a 12-bit ADC supporting high-speed conversions, a High-Speed PWM module with advanced dead-time and complementary-output capabilities, and CAN Flexible Data-Rate (CAN FD) connectivity for modern automotive and industrial networks. These peripherals are tightly coupled to the 100 MHz DSP engine with hardware MAC and divide instructions, enabling single-cycle DSP operations.
Architecturally, the dsPIC33CK core pairs a 16-bit CPU with DSP-enhanced instruction extensions and a two-stage instruction pipeline, while the enhanced peripheral ecosystem (DMA, configurable logic, and analog comparators) offloads time-critical tasks from software. The integrated op-amps directly buffer shunt-resistor current signals into the ADC, reducing external component count in motor-control designs.
Typical applications include brushless DC (BLDC) and PMSM motor control, digital power conversion (totem-pole PFC, LLC converters), industrial automation nodes, and automotive-adjacent systems requiring CAN FD communication.
Design consideration: the dsPIC33CK family typically requires a VCAP/VDDCORE stabilizing capacitor; follow the power-up sequencing and decoupling guidance in the manufacturer datasheet, and budget Flash carefully - 128KB is ample for FOC motor-control firmware with communication stacks.
This page synthesizes distributor pricing, drop-in alternatives within the dsPIC33CK and dsPIC33CH families, and practical design notes not found in the 984-page manufacturer datasheet, adding selection and cross-reference value beyond raw spec repetition.
Drop-in alternatives for DSPIC33CK128MC502T-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 DSPIC33CK128MC502T-I/SS (same form factor and footprint) — differing in Operating Temperature, Package, Core Architecture, Program Memory (Flash), ADC Resolution.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK256MC502T-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK64MC502T-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK128MC501T-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CH128MP202-I/SS
✅ Drop-In✓ In Stock
$4.1 / Unit
View Datasheet →DSPIC33CH64MP202-E/SS
✅ Drop-In✓ In Stock
$2.78 / Unit
View Datasheet →DSPIC33CK128MC502T-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC DSC core |
| Core Frequency | 100 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| RAM | 16 KB |
| ADC Resolution | 12 bit |
| Integrated Op-Amps | Yes |
| PWM Module | High-Speed PWM |
| Communication Interface | CAN FD |
| Package | 28-SSOP |
| Package Terminal Pitch | 0.65 mm |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (I grade) |
| Packaging Option | Tape and Reel (T suffix) |
DSPIC33CK128MC502T-I/SS 0.65 mm Pin Configuration Guide
Pin configuration for DSPIC33CK128MC502T-I/SS (0.65 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 DSPIC33CK128MC502T-I/SS.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK128MC502T-I/SS is suitable for 6 applications: BLDC/PMSM Motor Control, Digital Power Conversion, Industrial Automation Nodes, Automotive-Adjacent CAN FD Systems, Audio and Signal Processing Systems, Robotics and Embedded Control.
BLDC/PMSM Motor Control
The DSPIC33CK128MC502T-I/SS is purpose-built for sensorless and sensored field-oriented control (FOC) of brushless DC and permanent-magnet synchronous motors. Its single 100 MHz dsPIC33CK core executes single-cycle MAC instructions, closing current loops fast enough for FOC at PWM frequencies of 50 kHz and above, while the High-Speed PWM module provides complementary outputs with programmable dead time for three-phase inverters. The integrated op-amps buffer shunt-resistor current signals directly into the 12-bit ADC, eliminating external amplifiers and shortening the current-sense path. Designers typically budget the 128KB Flash for FOC firmware plus CAN FD communication stacks. Unlike general-purpose MCUs, the deterministic DSP pipeline keeps loop-jitter low, directly improving torque ripple and efficiency.
Recommended
Digital Power Conversion
In digitally controlled power supplies - totem-pole PFC, LLC resonant converters, and high-frequency buck stages - the DSPIC33CK128MC502T-I/SS provides the fast control loop and precision PWM resolution needed for stable regulation. The High-Speed PWM module supports high PWM resolution and flexible dead-time insertion, critical for efficiency in wide-bandgap (GaN/SiC) designs switching above 100 kHz. The 12-bit ADC with integrated op-amps samples output voltage and inductor/shunt currents with minimal external conditioning, and the 100 MHz core runs digital compensators (PID/3p3z) in firmware with deterministic latency. The 128KB Flash accommodates compensator tables, fault management, and telemetry. CAN FD or UART links to a system host enable hot-swap power-shelf control in server and telecom rectifiers.
Recommended
Industrial Automation Nodes
As a CAN FD-capable 16-bit DSC, the DSPIC33CK128MC502T-I/SS serves as a compact intelligent node for industrial automation: actuators, sensors, and conveyor subsystems that must react to local control loops while reporting over a robust field bus. The 100 MHz core handles protocol stacks and local control simultaneously, the 12-bit ADC digitizes analog transducer signals, and the integrated op-amps condition low-level sensor outputs without extra components. The industrial -40C to +85C temperature grade (I suffix) matches cabinet and factory-floor environments. Compared with a plain MCU plus external CAN controller, this single-chip approach reduces board area and BOM count; the 28-SSOP footprint fits compact distributed-I/O PCBs. High-Speed PWM outputs can also drive local actuators such as valves or small motors.
Recommended
Automotive-Adjacent CAN FD Systems
The DSPIC33CK128MC502T-I/SS integrates CAN Flexible Data-Rate (CAN FD), making it suitable for CAN FD-based connectivity in off-highway equipment, agricultural systems, marine electronics, and other automotive-adjacent platforms that do not require full AEC-Q100 qualification. CAN FD raises data payloads to 64 bytes and bit rates well beyond classical CAN, and the DSC's 100 MHz core keeps up with FD frame processing while running the primary control application. The High-Speed PWM and 12-bit ADC resources simultaneously drive local actuators and monitor sensors, consolidating gateway-node and control-node functions in one 28-SSOP device. Note that automotive production programs should instead select Microchip's automotive-qualified variants of the dsPIC33CK family with PPAP documentation.
Recommended
Audio and Signal Processing Systems
The DSP engine of the DSPIC33CK128MC502T-I/SS - hardware MAC, DSP addressing modes, and single-cycle multiply - makes it a cost-effective DSP for embedded audio processing: active noise cancellation, digital filters, audio effects, and ultrasonic signal generation. The 12-bit ADC captures microphone or sensor inputs, the integrated op-amps provide input buffering/gain, and PWM or external codec interfaces handle output paths. At 100 MHz the core sustains meaningful MIPS for biquad filter cascades and FFT-based analysis within deterministic deadlines. Compared with a separate MCU-plus-DSP solution, this single-chip DSC halves the control/communication complexity while the 128KB Flash holds filter coefficient tables and firmware. It is best suited to low-channel-count embedded audio rather than high-fidelity multi-channel playback, where a dedicated audio DSP remains preferable.
Recommended
Robotics and Embedded Control
Compact robotics subsystems - joint controllers, gripper drivers, mobile-robot drive nodes - benefit from the DSPIC33CK128MC502T-I/SS combination of a 100 MHz control core, High-Speed PWM for motor drivers, 12-bit ADC for encoders and current sensing, and CAN FD for multi-node robot buses. The integrated op-amps condition motor phase currents for torque control loops, and the DSP core runs cascade position/velocity/current loops at rates unattainable on general-purpose 8/16-bit MCUs. The 28-SSOP package's 0.65 mm pitch is hand-solderable for prototypes yet production-friendly, and the industrial temperature grade suits workshop and field robots. Firmware-level CAN FD enables deterministic coordination across dozens of joints on a single bus, replacing point-to-point wiring harnesses and simplifying robot cable routing.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK128MC502T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK256MC502T-I/SS | DSPIC33CK64MC502T-I/SS | DSPIC33CK128MC501T-I/SS | DSPIC33CH128MP202-I/SS |
|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 128 KB | 256 KB | 64 KB | 128 KB | 128 KB |
| Core / Frequency | 1x 100 MHz 16-bit dsPIC33CK | 1x 100 MHz (same core) | 1x 100 MHz (same core) | 1x 100 MHz (same core) | Dual-core: 100 MHz main + 100 MHz auxiliary |
| ADC | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit |
| CAN FD | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) |
Key Differentiators
- 128KB Flash sweet spot at MC50x cost (vs DSPIC33CK64MC502T-I/SS)
- Memory headroom flexibility within the same footprint (vs DSPIC33CK256MC502T-I/SS)
- Single-core simplicity for pure control loops (vs DSPIC33CH128MP202-I/SS)
- Dual integrated op-amps reduce external BOM (vs DSPIC33CK128MC501T-I/SS)
Design Notes
Provide dedicated decoupling on every VDD pin pair plus a separate AVDD filter (typically a ferrite bead or RC from the digital rail, per the manufacturer datasheet power architecture). The dsPIC33CK core regulator requires the specified VCAP/VDDCORE capacitor - do not omit it or substitute a different dielectric, as core-supply instability is a leading cause of field reset issues. Estimated: at 100 MHz core operation, run-current is in the tens-of-mA class; verify exact IDD curves against the datasheet electrical-characteristics tables for your supply budget.
Route the High-Speed PWM outputs to gate drivers with short, matched traces and keep the shunt-resistor-to-op-amp-to-ADC analog path as short as possible; the integrated op-amps are meant to eliminate long external analog runs. Place the 12-bit ADC's AVDD/AVSS connections on a quiet analog island separated from PWM switching loops and CAN FD transceiver return currents. Use a solid ground plane under the 28-SSOP and place the ICSP/PGD/PGC programming header adjacent to the part for production reprogramming access.
Budget Flash before committing to the 128KB part: linked firmware including a CAN FD stack, FOC control code, and diagnostics can approach 100KB - if projections exceed ~80% of 128KB, select the pin-identical DSPIC33CK256MC502T-I/SS early instead of a mid-program PCB-identical swap later. Also confirm temperature grade on purchase documents: -I (-40C to +85C) parts must not be substituted into extended-temperature sockets that require -E variants, and automotive programs require Microchip's AEC-Q100-qualified equivalents rather than the industrial grade.
For CAN FD nodes, keep the CANTX/CANRX traces short to the transceiver and place the transceiver's split/termination network per Microchip's CAN FD design guidance in the datasheet system-integration section. On PWM outputs driving external MOSFET gates, series resistors and gate-driver layout control dv/dt coupling into adjacent analog traces; the 100 MHz DSC tolerates fast edge timing but the analog front end benefits from routing analog signals orthogonally to switching nets on adjacent layers.
Compliance Information
The -I temperature grade (industrial -40C to +85C) is not AEC-Q100 qualified; Microchip offers separate automotive-qualified variants for automotive programs. RoHS/REACH status should be confirmed via Microchip's official compliance certificates.
