DSPIC33CK128MP502-E/SS - 100MHz 16-bit DSC CAN-FD | Microchip
MPN: DSPIC33CK128MP502-E/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.62 | $4.62 |
| 10 | $4.16 | $41.60 |
| 100 | $3.71 | $371.00 |
| 500 | $3.35 | $1,675.00 |
| 1,000 | $3.02 | $3,020.00 |
DSPIC33CK128MP502-E/SS Overview
A digital signal controller combines the computational power of a DSP with the peripheral set and ease of use of a microcontroller. In the power-management hierarchy, DSCs sit between general-purpose MCUs and dedicated DSPs: they execute control-loop mathematics (PID, compensation filters, field-oriented control) in hardware-friendly instructions while providing motor-control PWMs and fast analog-to-digital conversion, making them the de facto processor class for digital power supplies and motor drives.
Key differentiating specifications include the 100 MIPS dsPIC33CK DSC core (DC to 100 MIPS per the family datasheet), dual-panel flash supporting live firmware updates, and a rich analog front end: on-chip operational amplifiers and 12-bit ADCs eliminate external amplifiers in current-sense loops. The extended temperature range (-40C to +150C, denoted by the -E suffix) and Functional Safety (FuSa) support qualify the device for harsh automotive and industrial environments.
Technically, the device uses a modified Harvard architecture with a 24-bit instruction word and a DSP engine with single-cycle MAC and dual operand fetch, sustaining deterministic execution of time-critical control loops. The 128 KB flash is dual-partitioned with error correction code (ECC), enabling fail-safe over-the-air or field firmware updates without external memory. Dedicated PWM peripherals with high resolution address switching frequencies well into the hundreds of kilohertz for digital power conversion.
Typical applications include digital switched-mode power supplies (AC-DC, DC-DC), PFC stages, brushless DC and PMSM motor control for industrial drives and e-mobility accessories, CAN FD networked sensor nodes, and LED drivers. The CAN FD module directly interfaces to automotive and industrial buses while the 150C rating covers under-hood and high-power enclosure locations.
For design, note the narrow operating supply window of 3.0V to 3.6V; a 3.3V LDO or buck regulator with low noise is recommended, and all unused I/O should be configured to a defined state per Microchip's functional safety guidance. Keep the analog reference routing separate from PWM power loops for best ADC accuracy.
This page synthesizes distributor availability data, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, providing engineers and buyers with a single verifiable reference. Pricing shown is representative as of 2026-09-22.
Drop-in alternatives for DSPIC33CK128MP502-E/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 DSPIC33CK128MP502-E/SS (same form factor and footprint) — differing in Operating Temperature, PWM, CAN Interface, Data SRAM, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK128MP502-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK256MP502-E/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.96 / Unit
View Datasheet →DSPIC33CK64MP502-E/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.92 / Unit
View Datasheet →DSPIC33CK32MP502-E/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
Contact for price
View Datasheet →DSPIC33CK256MP502-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.98 / Unit
View Datasheet →DSPIC33CK128MP502-E/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33CK DSC, Modified Harvard |
| Maximum CPU Speed | 100 MHz (100 MIPS) |
| Program Flash Memory | 128 KB (128K x 8), dual-partition with ECC |
| Data SRAM | 16 KB |
| Operating Voltage Range | 3.0 V to 3.6 V |
| Operating Temperature Range | -40C to +150C (E grade) |
| CAN Interface | CAN Flexible Data (CAN FD) |
| ADC Resolution | 12-bit |
| Analog Op-Amps | Integrated op-amps |
| PWM | High-Resolution PWM |
| Package | 28-SSOP |
| Mounting Type | Surface Mount |
| Qualification | AEC-Q100 qualified, Functional Safety (FuSa) |
| Programming Interface | ICSP (PGECx/PGEDx pairs) |
| Program Memory Width | 24-bit instruction word |
DSPIC33CK128MP502-E/SS 28-ssop Pin Configuration Guide
Pin configuration for DSPIC33CK128MP502-E/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 DSPIC33CK128MP502-E/SS.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK128MP502-E/SS is suitable for 6 applications: Digital Switch-Mode Power Supplies, Brushless DC and PMSM Motor Control, Automotive CAN FD Sensor and Control Nodes, Industrial Sensing and Control, LED Lighting and Electronic Ballasts, High-Temperature Embedded Control (150C environments).
Digital Switch-Mode Power Supplies
The DSPIC33CK128MP502-E/SS fits digital power conversion because its 100 MHz (100 MIPS) core closes voltage- and current-loop feedback at switching frequencies of several hundred kilohertz, while the high-resolution PWM provides sub-nanosecond-effective duty-cycle resolution for precise duty and phase control. Its 12-bit ADCs sample output voltage and inductor current synchronously with the PWM period, and integrated op-amps amplify shunt-current signals without external amplifiers, reducing BOM count. Placed as the single controller in AC-DC or DC-DC converters, it replaces analog compensation networks with firmware-defined control laws, and the 128 KB dual-partition flash allows live firmware update of control coefficients in the field.
Recommended
Brushless DC and PMSM Motor Control
Field-oriented control (FOC) for BLDC and PMSM motors demands deterministic execution and fast analog sampling, both delivered by the DSPIC33CK128MP502-E/SS: the 100 MHz core computes Park/Clarke transforms and PI current loops within a single PWM period, the high-resolution PWM drives the three-phase inverter with fine edge resolution that reduces torque ripple, and 12-bit ADCs trigger on PWM events to capture phase currents at consistent points. The integrated op-amps condition low-side shunt currents directly. Microchip's motor-control development boards for this family (PIM-based systems) demonstrate proven reference designs, and the -40C to +150C rating suits enclosed drives.
Recommended
Automotive CAN FD Sensor and Control Nodes
The CAN FD module on the DSPIC33CK128MP502-E/SS connects nodes directly to automotive and industrial buses at data rates beyond classical CAN, while AEC-Q100 qualification and Functional Safety (FuSa) support address automotive quality requirements. The 150C temperature rating of the -E grade permits placement near actuators, pumps, and under-hood loads where conventional 85C controllers fail. The 12-bit ADCs and op-amps digitize local analog sensors (pressure, current, position), the high-resolution PWM drives actuators or fans, and the 128 KB flash with ECC plus dual-partition live update enables firmware upgrade over the vehicle network without external memory.
Recommended
Industrial Sensing and Control
Factory automation nodes benefit from the DSPIC33CK128MP502-E/SS combination of a DSP-class 100 MHz core for filtering and control algorithms, on-chip op-amps and 12-bit ADCs for direct sensor signal conditioning, and CAN FD for deterministic industrial networking. The 16 KB RAM accommodates FIR/IIR filter histories and protocol buffers, while the 128 KB flash with ECC retains calibration tables and logging across power cycles. Because the device integrates the analog front end, a single 28-SSOP chip can replace a microcontroller plus external amplifier and ADC chain, shrinking board area in dense I/O modules and motor-mounted sensor boards.
Recommended
LED Lighting and Electronic Ballasts
High-power LED drivers require precise current regulation at switching frequencies where analog controllers struggle with dimming resolution. The DSPIC33CK128MP502-E/SS addresses this with high-resolution PWM for fine duty-cycle and phase control in buck, boost, or flyback LED stages, 12-bit ADCs for output-current feedback, and the 100 MHz core running average-current-mode control loops with programmable compensation. Its -40C to +150C rating tolerates driver enclosures with elevated ambient temperatures, and firmware-defined behavior allows color-tuning, thermal foldback, and fault reporting over CAN FD in networked architectural or horticultural lighting systems.
Recommended
High-Temperature Embedded Control (150C environments)
Systems located in geothermal, down-hole-adjacent, aerospace accessory, or high-power inverter enclosures regularly see ambient temperatures above 85C, beyond standard industrial controller ratings. The DSPIC33CK128MP502-E/SS extends operation to +150C, letting a single controller run control, communication, and diagnostics inside the hot zone instead of routing long analog signals to a cooler compartment. The 100 MHz core processes sensor data locally, CAN FD transmits results off-board, and flash ECC plus memory built-in self-test maintain data integrity under thermal stress, supported by Microchip's Functional Safety documentation for reliability-critical designs.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK128MP502-E/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK128MP502-I/SS | DSPIC33CK256MP502-E/SS | DSPIC33CK64MP502-E/SS | DSPIC33CK32MP502-E/SS | DSPIC33CK256MP502-I/SS |
|---|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) |
| Program Flash | 128 KB (dual-partition, ECC) | 128 KB | 256 KB | 64 KB | 32 KB | 256 KB |
| SRAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Temperature Range | -40C to +150C (E grade) | -40C to +85C | -40C to +150C | -40C to +150C | -40C to +150C | -40C to +85C |
| CAN FD / Op-Amps / 12-bit ADC / HR-PWM | Yes | Yes | Yes | Yes | Yes | Yes |
| Qualification | AEC-Q100, Functional Safety (FuSa) | AEC-Q100 | AEC-Q100, FuSa | AEC-Q100, FuSa | AEC-Q100, FuSa | AEC-Q100 |
Key Differentiators
- 150C extended temperature rating (vs DSPIC33CK128MP502-I/SS)
- Cost-optimized 128 KB flash size (vs DSPIC33CK256MP502-E/SS)
- Integrated analog signal chain (vs DSPIC33CK32MP502-E/SS)
- Live-updatable dual-partition flash (vs DSPIC33CK128MP502-I/SS)
Design Notes
The DSPIC33CK128MP502-E/SS operates only from 3.0V to 3.6V, so generate the controller rail with a clean 3.3V regulator such as an LDO with adequate PSRR for the target application. Decouple VDD and AVDD separately with 0.1uF ceramic capacitors placed within 2 mm of the pins, plus a bulk 4.7uF to 10uF capacitor. In motor-drive boards, isolate the controller supply from the gate-driver supply to prevent PWM switching transients from corrupting the ADC reference. Estimated: a 100 MHz core draws several tens of milliamperes; size the regulator accordingly.
Route the analog front end (op-amp inputs, ADC channels, VREF) on a quiet region of the board, away from PWM output traces and gate-driver loops. Use a solid ground plane and return analog currents under the analog traces only. Keep the ICSP programming pairs (PGECx/PGEDx) routed to a header - per Microchip programming guidance, whichever PGEC/PGED pair is used must be paired consistently (e.g., PGEC2 with PGED2). Add series resistors on PGD lines if driving long harnesses to reduce ringing during programming.
The -E grade permits junction temperatures up to +150C, but verify your thermal budget: Estimated junction rise = theta_JA (see datasheet thermal table for 28-SSOP) multiplied by total power dissipation (core current plus I/O current times voltage drop). In a sealed enclosure at 85C ambient with 100 MHz operation, heat sinking through the PCB ground plane is usually required. Measure junction temperature using the on-chip temperature-indicator diode channels during validation, and enforce firmware-based thermal shutdown or frequency scaling with margin below 150C.
Do not assume the industrial -I/SS and extended -E/SS parts are thermally interchangeable: only the -E/SS is specified to +150C. Also, flash ECC and dual-partition live update require correct linker/configuration setup in MPLAB X; incorrect partition settings can render the live-update feature unusable. Finally, unused I/O should never be left floating in safety-relevant designs - configure them as outputs driving low or inputs with internal pull devices per the Functional Safety (FuSa) documentation to guarantee deterministic states at reset.
Compliance Information
AEC-Q100 qualified and listed under Microchip's automotive/Functional Safety (FuSa) dsPIC33CK portfolio per distributor listings (DigiKey, Mouser, Avnet). REACH and halogen-free status not stated in provided data.
