DSPIC33CK128MP502T-I/2N - 100MHz 128KB DSC | Microchip
MPN: DSPIC33CK128MP502T-I/2N ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.9 | $3.90 |
| 10 | $3.55 | $35.50 |
| 100 | $3.15 | $315.00 |
| 500 | $2.85 | $1,425.00 |
| 1,000 | $2.6 | $2,600.00 |
DSPIC33CK128MP502T-I/2N Overview
A digital signal controller combines the computational power of a DSP with the peripheral integration and ease of use of a microcontroller, sitting within the broader hierarchy of embedded processors: MCU -> DSC -> DSP. The dsPIC33CK family targets real-time control loops where fast math and precise analog interfaces are both essential.
Key features include the 100 MHz dsPIC33CK CPU core with DSP engine and dual-panel flash enabling live firmware updates, CAN-FD for automotive and industrial networking, on-chip operational amplifiers, high-speed 12-bit ADCs capable of sampling in the megahertz class, and advanced high-resolution PWM peripherals purpose-built for switch-mode power conversion. Functional Safety (FuSa) support documentation is available for this part class per DigiKey listings.
The dual-panel flash architecture allows the controller to execute from one panel while erasing or programming the other, a significant benefit for digital power products requiring field firmware updates without halting the control loop. The integrated op-amps reduce external component count in current-sense front ends, and the ADC-to-PWM latency has been optimized for sub-microsecond control loops.
Typical applications include digital power supplies (totem-pole PFC, LLC converters), brushless DC and PMSM motor control, USB-PD and wireless-charging power stages, and advanced sensing systems. The 3.3 V supply and rich analog front end make it well suited to compact power-conversion boards.
When designing with this device, budget the 3.0-3.6 V supply rail early and exploit the multiple PGECx/PGEDx pin pairs for in-circuit serial programming (ICSP); use PGEC2/PGED2 as a matched pair only. Pay attention to the exposed pad, which must be soldered to a grounded copper pour for thermal and signal-integrity performance.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, adding procurement and engineering value beyond the standard product listing.
Drop-in alternatives for DSPIC33CK128MP502T-I/2N — 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 DSPIC33CK128MP502T-I/2N (same form factor and footprint) — differing in Package, Core, Operating Temperature, Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK128MP202-I/2N
✅ Drop-In✓ In Stock
$3.05 / Unit
View Datasheet →DSPIC33CK128MP502T-E/2N
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK128MP502T-H/2N
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK128MP502-I/2N
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.05 / Unit
View Datasheet →DSPIC33CK128MC503T-I/M5
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3 / Unit
View Datasheet →DSPIC33CK128MP502T-I/2N Maximum Ratings & Electrical Characteristics
| Core | dsPIC33CK (16-bit DSC) |
| Core Size | 16-bit |
| Maximum Clock Frequency | 100 MHz |
| Program Memory Size | 128 KB (128K x 8) Flash |
| Program Memory Type | Dual Panel Flash |
| Data RAM Size | 16 KB |
| Number of Cores | 1 Core |
| Operating Supply Voltage | 3 V to 3.6 V |
| Supply Voltage - Nominal | 3.3 V |
| Mounting Style | SMD/SMT |
| Package | 28-UQFN (6x6 mm) Exposed Pad |
| Minimum Operating Temperature | -40 C |
| Maximum Operating Temperature | +85 C |
| Interfaces | CAN-FD, UART, SPI, I2C |
| Analog Peripherals | 12-bit ADCs, on-chip OpAmps |
| PWM | High-resolution PWM (per family datasheet) |
DSPIC33CK128MP502T-I/2N 28-uqfn (6x6 mm) exposed pad Pin Configuration Guide
Pin configuration for DSPIC33CK128MP502T-I/2N (28-uqfn (6x6 mm) exposed pad 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 DSPIC33CK128MP502T-I/2N.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK128MP502T-I/2N is suitable for 6 applications: Digital Power Supplies, Brushless Motor Control, Industrial Networking Nodes, Wireless Charging and USB-PD, Advanced Sensing and Control, Automotive-Adjacent Subsystems.
Digital Power Supplies
The DSPIC33CK128MP502T-I/2N is purpose-built for digitally controlled switch-mode power supplies such as LLC converters, totem-pole PFC stages, and DC-DC modules. Its 100 MHz dsPIC33CK core executes compensator math with single-cycle DSP MAC instructions, while the high-resolution PWM peripheral provides the fine edge resolution needed for small duty cycles at hundreds of kilohertz. The fast 12-bit ADC sampled by hardware with minimal ADC-to-PWM latency closes current-mode loops in the sub-microsecond class. The 16 KB RAM holds state machines and telemetry, and dual-panel flash permits field firmware updates without dropping the control loop. Place it between the sensing divider/op-amp front end and gate drivers for a complete digital control solution.
Recommended
Brushless Motor Control
Sensorless and sensored BLDC/PMSM drives benefit directly from this DSC's architecture. The 100 MHz core runs field-oriented control (FOC) loops at PWM-matched rates using DSP instructions, the 12-bit ADCs digitize phase currents and bus voltage simultaneously, and the on-chip operational amplifiers condition shunt-resistor signals without external op-amps, saving board area and BOM cost. High-resolution PWM outputs drive three-phase inverter bridges through gate drivers with dead-time insertions managed in hardware. CAN-FD enables networked motor nodes in industrial automation. The -40C to +85C industrial grade matches factory floor requirements, and the 28-UQFN footprint fits compact driver boards embedded in servo modules or appliances.
Recommended
Industrial Networking Nodes
With an integrated CAN-FD controller, the DSPIC33CK128MP502T-I/2N serves as an intelligent node in industrial buses, building automation, and vehicle subsystems. CAN-FD raises payload to 64 bytes per frame with faster arbitration-free data phases, ideal for firmware-over-CAN updates and rich telemetry. The 128 KB dual-panel flash stores application plus bootloader comfortably, and 16 KB RAM buffers message queues. Additional UART, SPI, and I2C peripherals connect sensors and local displays. The 100 MHz core leaves ample headroom for protocol stacks alongside the main application, making the part a single-chip control-and-communications solution for networked industrial equipment.
Recommended
Wireless Charging and USB-PD
High-frequency wireless power transmitters and USB-PD source/sink controllers require precise, fast PWM phase control - exactly what the high-resolution PWM and 100 MHz core of this DSC deliver. The 12-bit ADC monitors coil current, foreign-object detection signals, and bus voltage at kilohertz-to-megahertz sample rates, while the core executes demodulation of in-band communication from the receiver. On-chip op-amps condition current-sense inputs, reducing external components in space-constrained charger boards. The 3.0-3.6 V supply and 28-UQFN 6x6 mm exposed-pad package suit dense power accessory designs where firmware-updatable dual-panel flash supports evolving Qi-class or PD protocol stacks in the field.
Recommended
Advanced Sensing and Control
Sensor aggregation and real-time control systems exploit the DSC's analog integration: the 12-bit ADCs with on-chip operational amplifiers digitize bridges, current shunts, and voltage dividers with minimal external signal conditioning. The 100 MHz DSP engine applies filters, RMS calculations, and FFTs for predictive maintenance or condition monitoring, while the 16 KB RAM holds circular sample buffers. Results transmit over CAN-FD, UART, or SPI to supervisory systems. Dual-panel flash allows sensor-calibration data and firmware to be updated safely in operation. The industrial -40C to +85C rating and SMD/SMT UQFN package support both factory-floor and outdoor sensing enclosures.
Recommended
Automotive-Adjacent Subsystems
While the -I grade of this part targets industrial conditions, its CAN-FD interface and Functional Safety (FuSa) documentation support per DigiKey categorization make it usable in non-AEC-Q100-critical automotive-adjacent equipment: bench testers, charging-station auxiliary control, telematics gateways, and EVSE auxiliaries. CAN-FD provides the network interface with 64-byte payloads and data-phase rates suited to diagnostic and update traffic. The 100 MHz core handles both the network stack and local control concurrently. For environments exceeding +85C, the pin-identical DSPIC33CK128MP502T-E/2N (+125C) and -H/2N grades provide a drop-in migration path without PCB changes.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK128MP502T-I/2N — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK128MP202-I/2N | DSPIC33CK128MP502T-E/2N | DSPIC33CK128MP502T-H/2N |
|---|---|---|---|---|
| Package | 28-UQFN (6x6 mm) Exposed Pad | 28-UQFN (6x6 mm) - same | 28-UQFN (6x6 mm) - same | 28-UQFN (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Clock | 100 MHz | 100 MHz | 100 MHz (derating may apply at high temp) | 100 MHz (derating may apply at high temp) |
| Program Memory | 128 KB Flash (dual panel) | 64 KB Flash | 128 KB Flash (dual panel) | 128 KB Flash (dual panel) |
| Data RAM | 16 KB | 16 KB | 16 KB | 16 KB |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C | -40 C to +150 C (per Microchip USA) |
| 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 |
| CAN-FD | Yes | Yes | Yes | Yes |
Key Differentiators
- Double the flash of the low-cost drop-in (vs DSPIC33CK128MP202-I/2N)
- 100 MHz 16-bit DSC core with DSP engine (vs DSPIC33CK128MC503T-I/M5)
- Industrial temperature grade at lower cost than extended grades (vs DSPIC33CK128MP502T-E/2N)
Design Notes
The 28-UQFN exposed pad is not optional: solder it to a grounded copper pour with an array of thermal vias. The pad provides the primary ground return for the ADC reference and high-frequency PWM switching currents; a floating or cold-soldered pad commonly manifests as ADC noise and intermittent resets. Use a 3.3 V low-ESR ceramic bulk capacitor (10 uF) plus 0.1 uF decoupling caps at each VDD pin, placed within 2 mm of the pins. Estimated: keep high-dv/dt PWM routing at least 3 mm from the analog front end to preserve 12-bit ADC accuracy.
The device offers multiple ICSP programming pin pairs (PGEC1-3/PGED1-3). Per Northern Software's ICSP guidance for the dsPIC33CK128MP502, you must use PGECx and PGEDx as a matched pair - if PGEC2 carries ICSPCLK, ICSPDAT must route to PGED2, never a mismatched combination. Route your programming header to one dedicated pair and reserve it on the PCB even in production. Also note this is a strict 3.0-3.6 V part: connecting 5 V logic directly to port pins risks damage; use level shifting for 5 V peripherals.
Budget the power tree for a 3.3 V rail sized for the 100 MHz core plus I/O and CAN transceiver current; while exact mA figures are in the datasheet electrical characteristics, plan the upstream regulator for headroom above 150 mA Estimated for a fully active core with peripherals and CAN traffic. If the board is powered from 5 V or 24 V, an LDO (e.g., 3.3 V output) keeps the analog rails quiet for the 12-bit ADC; a buck converter is acceptable if its switching frequency is filtered, since the dsPIC33CK op-amps and ADC will pass supply ripple into conversions.
For digital power layouts, exploit the peripheral pin selection (PPS) flexibility of the dsPIC33CK family to keep the ADC sense traces short and route PWM outputs on pins adjacent to the gate drivers. Assign current-sense inputs near the on-chip op-amp input pins to avoid long analog runs across the 6x6 mm package. Kelvin-connect shunt resistors directly to the op-amp inputs. Estimated: even a 10 mm analog trace in a switching converter environment can pick up enough coupled noise to degrade the effective number of bits of the 12-bit ADC.
Compliance Information
Compliance statuses were not stated in the provided web data; verify on the official Microchip product page or datasheet before procurement. DigiKey categorizes the part with Functional Safety (FuSa) support documentation.
