DSPIC33CK128MC503-E/M5 - 16-bit 100MHz DSC, 128KB Flash | Microchip
MPN: DSPIC33CK128MC503-E/M5 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.95 | $4.95 |
| 10 | $4.46 | $44.60 |
| 100 | $3.97 | $397.00 |
| 500 | $3.57 | $1,785.00 |
| 1,000 | $3.22 | $3,220.00 |
DSPIC33CK128MC503-E/M5 Overview
A digital signal controller combines the computational power of a digital signal processor with the control peripherals and ease of use of a microcontroller. Within the power-management hierarchy, the DSC sits above general-purpose MCUs in the dsPIC33C generation, providing deterministic interrupt latency, DSP multiply-accumulate instructions, and cycle-accurate peripherals targeted at closed-loop power conversion and motor control systems.
Key features include the single 100 MHz dsPIC33CK core with DSP-enhanced instruction set, 128 KB Flash and 16 KB RAM for complex firmware and data logging, dual on-chip operational amplifiers that reduce external component count in current-sense paths, a 12-bit ADC supporting simultaneous sampling of multiple channels, and a CAN FD interface for robust industrial and automotive networking. The E suffix denotes the extended -40C to +125C operating range for harsh environments.
Architecturally, the dsPIC33CK core executes from Flash with zero-wait-state prefetch, integrates DSP and fixed-point math units, and connects peripherals through crossbar-like routing that gives the 27 general-purpose I/O pins flexible mapping. High-resolution PWM modules support advanced switching topologies such as totem-pole PFC, LLC resonant converters, and three-phase inverter drives with cycle-level dead-time control.
Typical applications include brushless DC and PMSM motor control, digital power supplies and solar inverters, and CAN FD networked industrial nodes. The on-chip op-amps and ADC make the part especially well suited to shunt-based phase-current sensing in compact motor-drive designs.
Design consideration: the 3.0V to 3.6V supply window requires a tightly regulated rail; use the internal voltage regulator and place the recommended decoupling network at the VDD and AVDD pins per the manufacturer datasheet.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33CK128MC503-E/M5 — 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 DSPIC33CK128MC503-E/M5 (same form factor and footprint) — differing in Flash Program Memory, Operating Temperature, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK256MC503-E/M5
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK64MC503-E/M5
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK128MC503-I/M5
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK128MP503-E/M5
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CH64MP503-I/M5
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.55 / Unit
View Datasheet →DSPIC33CK128MC503-E/M5 Maximum Ratings & Electrical Characteristics
| Core | dsPIC33CK 16-bit DSC core |
| Core Clock Frequency | 100 MHz |
| Flash Program Memory | 128 KB (128K x 8) |
| RAM Data Memory | 16 KB |
| Supply Voltage Range | 3 V to 3.6 V |
| General-Purpose I/O | 27 I/O |
| Package | 36-UQFN (5x5 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C (E grade) |
| ADC Resolution | 12-bit |
| On-Chip Op-Amps | Yes (integrated op-amps) |
| PWM | High-resolution PWM |
| Communication Interfaces | CAN FD, UART, SPI, I2C |
| Functional Safety Support | Yes (FuSa package support) |
DSPIC33CK128MC503-E/M5 36-uqfn (5x5 mm) Pin Configuration Guide
Pin configuration for DSPIC33CK128MC503-E/M5 (36-uqfn (5x5 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 DSPIC33CK128MC503-E/M5.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK128MC503-E/M5 is suitable for 6 applications: BLDC / PMSM Motor Control, Digital Power Conversion (Totem-Pole PFC / LLC), Solar Micro-Inverters and String Optimizers, CAN FD Industrial Networked Nodes, Automotive Subsystem Control, Battery Management and Charging Systems.
BLDC / PMSM Motor Control
The DSPIC33CK128MC503-E/M5 fits sensorless and sensored field-oriented-control (FOC) motor drives because its 100 MHz DSP core executes current-loop math with sub-microsecond determinism, its integrated op-amps buffer low-side shunt currents directly into the 12-bit ADC, and its high-resolution PWM inserts cycle-accurate dead time for the three-phase inverter. In a typical topology the phase shunts feed the on-chip op-amps, the ADC samples at the PWM center to reject switching ripple, and the CAN FD interface links the drive to the plant network. Using the on-chip amplifiers removes two to three external op-amp packages, shrinking the 5x5 mm controller footprint. The -40C to +125C E grade also survives motor-housingside ambient conditions.
Recommended
Digital Power Conversion (Totem-Pole PFC / LLC)
In digital power supplies, the DSPIC33CK128MC503-E/M5 suits totem-pole PFC and LLC resonant converter control thanks to its 100 MHz core, high-resolution PWM with phase-shift and complementary outputs, and fast 12-bit ADC triggering synchronized to PWM events for cycle-by-cycle current sampling. The controller closes voltage and current loops at switching frequency, computes duty or frequency modulation in firmware, and manages housekeeping such as inrush, brown-out, and fault latching. The 128 KB Flash accommodates multi-mode control state machines plus CAN FD or UART telemetry to a system host. Operating from a regulated 3.3V rail derived from the auxiliary bias supply, the part delivers deterministic latency that analog-style control loops require without analog compensator drift.
Recommended
Solar Micro-Inverters and String Optimizers
Photovoltaic power electronics benefit from the DSPIC33CK128MC503-E/M5 because maximum-power-point tracking demands rapid, deterministic sampling of panel voltage and current plus resonant or PWM control of the power stage. The 100 MHz DSC core executes MPPT algorithms concurrently with current-mode control loops, while the 12-bit ADC reads the PV and bus sense signals synchronized to PWM to avoid switching-noise corruption. The extended -40C to +125C temperature range addresses rooftop enclosure environments, and the 36-pin UQFN (5x5 mm) keeps controller area minimal on compact inverter boards. CAN FD or UART provides grid-tie communication to a gateway controller when required by the system architecture.
Recommended
CAN FD Industrial Networked Nodes
As an industrial field-node controller, the DSPIC33CK128MC503-E/M5 combines a CAN FD interface supporting 64-byte payloads and higher data-phase bit rates with sufficient 128 KB Flash to run both the application and a robust communication stack. The 27 general-purpose I/O pins with peripheral pin-select mapping adapt to mixed sensor and actuator duties, the 12-bit ADC digitizes analog transducer inputs, and the UART/SPI/I2C peripherals connect local expansion devices. According to Microchip's dsPIC33CK positioning, these DSCs target industrial automation segments requiring deterministic behavior and functional-safety support packages, making the part suitable for safety-oriented I/O modules, servo end-stops, and machinery telemetry where CAN FD backbones are replacing classical CAN.
Recommended
Automotive Subsystem Control
The E temperature grade (-40C to +125C) of the DSPIC33CK128MC503-E/M5 addresses under-hood and near-engine electronic modules such as pump controllers, valve drivers, and actuator nodes. The 100 MHz core runs sensor-fusion and closed-loop control concurrently, the 12-bit ADC plus integrated op-amps handle position and current feedback with minimal external parts, and the PWM modules drive actuators or pre-drivers with hardware dead-time and fault shutdown. Microchip positions the dsPIC33CK family for automotive as well as industrial segments, and the FuSa designation on distributor listings reflects availability of functional-safety support documentation for qualified development flows. CAN FD integration eases network integration into modern vehicle backbone architectures.
Recommended
Battery Management and Charging Systems
Battery chargers and management nodes use the DSPIC33CK128MC503-E/M5 for its synchronized control and monitoring: the 12-bit ADC samples cell voltage, pack current, and temperature inputs, the high-resolution PWM drives the buck or multi-phase charging power stage with precise current regulation, and firmware state machines implement CC/CV profiles, cell balancing triggers, and safety cutoffs in the 128 KB Flash. The integrated op-amps condition shunt-based current sensing without external amplifiers, reducing BOM cost on compact charger boards. The -40C to +125C range covers automotive and outdoor energy-storage environments, while UART or CAN FD reports status and diagnostics to vehicle or site controllers. Deterministic interrupt behavior supports fast overcurrent protection latency in the control firmware.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK128MC503-E/M5 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK256MC503-E/M5 | DSPIC33CK64MC503-E/M5 | DSPIC33CK128MP503-E/M5 | DSPIC33CH64MP503-I/M5 |
|---|---|---|---|---|---|
| Package | 36-UQFN (5x5 mm) | 36-UQFN (5x5 mm) - same | 36-UQFN (5x5 mm) - same | 36-UQFN (5x5 mm) - same | 36-UQFN (5x5 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 128 KB | 256 KB | 64 KB | 128 KB | 64 KB |
| Core Architecture | Single-core dsPIC33CK, 100 MHz | Single-core dsPIC33CK, 100 MHz | Single-core dsPIC33CK, 100 MHz | Single-core dsPIC33CK, 100 MHz | Dual-core dsPIC33CH |
| Operating Temperature | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C (E) | -40C to +85C (I) |
| CAN FD | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Double the firmware headroom at same cost tier (vs DSPIC33CK64MC503-E/M5)
- Extended temperature operation (vs DSPIC33CK128MC503-I/M5)
- Integrated op-amps reduce BOM (vs DSPIC33CK128MP503-E/M5)
Design Notes
Supply the DSPIC33CK128MC503-E/M5 from a tightly regulated 3.0V to 3.6V rail per the datasheet. Estimated: at 100 MHz core activity with peripheral loading, expect tens of milliamps of core current; decouple VDD and AVDD with 100 nF ceramic capacitors placed within 2 mm of each pin pair, plus 10 uF bulk per rail. Separate the analog supply domain (AVDD) from digital VDD with a ferrite bead if the board shares a noisy 3.3V switching regulator output, and confirm the internal regulator capacitor requirement in the manufacturer datasheet pin-configuration section.
The 36-UQFN (5x5 mm) package uses a fine-pitch land pattern and exposed thermal pad; follow the manufacturer datasheet land-pattern drawing and solder the exposed pad to a grounded copper pour with multiple vias for heat spreading and ground integrity. Route the PWM outputs to gate drivers as short matched pairs to minimize loop area, and keep the on-chip op-amp input traces (shunt sense lines) as a Kelvin connection directly at the shunt resistor to prevent ground-bounce errors in current feedback.
Do not confuse ordering-code suffixes: the E grade (-40C to +125C) and I grade (-40C to +85C) share the same silicon but differ in qualification, so substituting an I/M5 part into an extended-temperature design silently violates your thermal budget. Also verify the 27 usable I/O count before committing pinout assignments - peripheral pin-select remapping must be confirmed in the family datasheet pin diagrams, since some terminals carry shared analog/digital functions with restrictions.
Compliance Information
Compliance data not present in the retrieved web data. Confirm RoHS/REACH declarations on the Microchip product page Material Declaration for the E/M5 ordering code.
