DSPIC33CK64MP503-I/M5 - 100MHz 16-Bit DSC CAN-FD | Microchip
MPN: DSPIC33CK64MP503-I/M5 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.85 | $3.85 |
| 10 | $3.42 | $34.20 |
| 100 | $2.98 | $298.00 |
| 500 | $2.55 | $1,275.00 |
| 1,000 | $2.12 | $2,120.00 |
DSPIC33CK64MP503-I/M5 Overview
A digital signal controller combines the computational throughput of a digital signal processor (DSP) with the peripheral integration and control architecture of a microcontroller (MCU). In the embedded-systems hierarchy, the dsPIC33CK family sits between general-purpose MCUs and high-end DSPs, targeting real-time closed-loop control such as digital power conversion, motor control, and advanced sensing.
Key features include a 16-bit dsPIC33CK CPU core operating up to 100 MIPS, dual-partition Flash with ECC and live update support, an integrated CAN Flexible Data (CAN FD) module, high-resolution PWM generators, and an analog subsystem with 3 operational amplifiers, 3 comparators, and a high-speed 12-bit ADC. According to Microchip product documentation, the device operates from a 3.0V to 3.6V supply.
The modified Harvard architecture with DSP instruction support (MAC, DSP multiply, barrel shifter) plus DMA channels enables tight control-loop execution, while the 2 ns-class high-resolution PWM peripheral suits switching converters and motor drive topologies.
Typical applications include digital power supplies (LLC, totem-pole PFC), BLDC/PMSM motor control with field-oriented control, CAN FD networked industrial nodes, and high-intensity LED drivers.
Design consideration: the 36-pin UQFN requires careful decoupling of all VDD pins and a solid exposed-pad ground connection for thermal and EMI performance; verify PGECx/PGEDx ICSP pairs during layout.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33CK64MP503-I/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 DSPIC33CK64MP503-I/M5 (same form factor and footprint) — differing in Package, Supply Voltage, Core Architecture, RAM, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK64MP503-E/M5
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →DSPIC33CK128MC503T-I/M5
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3 / Unit
View Datasheet →DSPIC33CK64MC103T-I/M5
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.58 / Unit
View Datasheet →DSPIC33CH64MP503-I/M5
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.55 / Unit
View Datasheet →DSPIC33CK64MP503-I/M5 Maximum Ratings & Electrical Characteristics
| Core | dsPIC33CK 16-bit DSC core |
| CPU Speed | 100 MHz (100 MIPS) |
| Program Memory (Flash) | 64 KB (64K x 8) with ECC, dual-partition live update |
| Data SRAM | 8 KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| CAN | CAN Flexible Data (CAN FD) |
| PWM | High-Resolution PWM |
| Op Amps (On-chip) | 3 |
| Comparators (On-chip) | 3 |
| Package | 36-UQFN (5x5 mm), exposed pad (M5) |
| Temperature Grade | -40C to +85C (I grade) |
| Mounting Type | Surface Mount |
| Series | dsPIC 33CK |
| Architecture | Modified Harvard, 16-bit with DSP instructions |
| Program Memory Type | FLASH |
| Application Class | Digital Signal Controller (DSC), Functional Safety (FuSa) capable family |
DSPIC33CK64MP503-I/M5 36-uqfn (5x5 mm), exposed pad (m5) Pin Configuration Guide
Pin configuration for DSPIC33CK64MP503-I/M5 (36-uqfn (5x5 mm), exposed pad (m5) 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 DSPIC33CK64MP503-I/M5.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK64MP503-I/M5 is suitable for 6 applications: Digital Power Conversion, BLDC/PMSM Motor Control, CAN FD Industrial Network Nodes, High-Intensity LED Lighting Drivers, Advanced Sensing and Control Systems, Automotive-Adjacent and E-Mobility Control Boards.
Digital Power Conversion
The DSPIC33CK64MP503-I/M5 fits digital power supplies such as LLC converters, totem-pole PFC stages, and DC-DC modules because its high-resolution PWM provides the fine duty-cycle and phase resolution needed for fixed-frequency switching at hundreds of kHz, while the 12-bit high-speed ADC samples output voltage and inductor current synchronously with the PWM cycle. The 100 MIPS 16-bit DSP core executes compensator and limit calculations deterministically within one switching period, and on-chip analog comparators implement cycle-by-cycle overcurrent protection without CPU latency. Placed as the controller with a gate-driver and power stage, the device adds firmware-configurable control laws that analog controllers cannot match, at the cost of firmware development effort and the need to validate code against fault conditions.
Recommended
BLDC/PMSM Motor Control
Field-oriented control (FOC) of brushless DC and permanent-magnet synchronous motors is a core target application for the DSPIC33CK64MP503-I/M5. The 3 integrated op amps buffer in-line shunt current signals directly, cutting external BOM cost, and the 12-bit high-speed ADC can sample two phase currents plus the DC bus in a single triggered sweep aligned to the center of the PWM carrier. The high-resolution PWM peripheral generates complementary outputs with programmable dead time for the three-phase inverter, and the 100 MHz core runs Clarke/Park transforms and a PI current loop at switching frequency with headroom for a position observer. The result is quiet, efficient torque control; the trade-off is that sensorless observers consume most of the 8 KB SRAM on larger state machines.
Recommended
CAN FD Industrial Network Nodes
With its integrated CAN Flexible Data (CAN FD) controller, the DSPIC33CK64MP503-I/M5 serves as an intelligent node in industrial automation and building-control networks that need 64-byte payloads and higher data-phase bit rates than classical CAN. The CAN FD module offloads frame handling with RAM-based message buffers, while the 100 MHz core concurrently runs the node's control task - for example a servo axis, sensor fusion block, or power-monitoring loop. Connecting the CANTX/CANRX pins through an external CAN FD transceiver yields a complete 2-wire bus interface. Dual-partition Flash with live update allows firmware upgrade over the CAN bus without bricking the node, a decisive advantage for field-deployed industrial equipment that cannot be power-cycled at will.
Recommended
High-Intensity LED Lighting Drivers
Smart LED drivers benefit from the DSPIC33CK64MP503-I/M5 combination of high-resolution PWM (for precise dimming resolution and multi-channel phase-shifted converters) and the on-chip high-speed ADC (for output-current regulation and fault monitoring). Dimming granularity far beyond 8-bit is achievable because PWM edge placement is finer than the base timer resolution, eliminating visible low-current stepping at deep dim levels. The 3 comparators implement fast overcurrent shutdown for shorted-LED or open-loop fault events, and CAN FD enables DALI-over-alternatives or networked lighting control in commercial installations. Thermal management is simplified because the UQFN exposed pad dissipates controller heat into the lighting PCB ground plane; the main design consideration is isolating switching noise from the ADC front end.
Recommended
Advanced Sensing and Control Systems
The DSPIC33CK64MP503-I/M5 is suited to advanced sensing nodes - power-quality meters, vibration monitors, and precision process controllers - because the family integrates a 12-bit high-speed ADC with multiple channels, on-chip op amps for sensor signal conditioning, and a DSP core able to run digital filters (IIR/FIR), RMS computation, and FFT-style analysis in real time. The 64 KB ECC Flash stores calibration tables and communication stacks, and the 8 KB SRAM holds double-buffered sample windows for block processing. DMA channels stream ADC results to RAM without CPU intervention, preserving deterministic timing for the control loop. Functional-safety (FuSa) family support per Microchip documentation assists designs requiring documented development processes, though full safety certification depends on system-level architecture.
Recommended
Automotive-Adjacent and E-Mobility Control Boards
While the -I grade DSPIC33CK64MP503-I/M5 targets industrial ranges (-40C to +85C), the same dsPIC33CK architecture is used in auxiliary e-mobility systems such as DC-DC converters, pump/fan controllers, and actuator drivers where CAN FD is the communication backbone. The dual-partition ECC Flash provides error-corrected program storage and live-update capability needed for field firmware campaigns, and cycle-by-cycle comparator-based protection meets the fast fault-response expectations of traction-adjacent power stages. Designers needing full AEC-Q100 coverage should move to the appropriate qualified variants within the Microchip portfolio; the device itself supplies the control-layer performance - 100 MIPS with hardware DSP - that these nodes require at low unit cost in a compact 5x5 mm footprint.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK64MP503-I/M5 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK64MP503-E/M5 | DSPIC33CK128MC503T-I/M5 | DSPIC33CK64MC103T-I/M5 | DSPIC33CH64MP503-I/M5 |
|---|---|---|---|---|---|
| Package | 36-UQFN (5x5 mm, M5) | 36-UQFN (5x5 mm, M5) - same | 36-UQFN (5x5 mm, M5) - same | 36-UQFN (5x5 mm, M5) - same | 36-UQFN (5x5 mm, M5) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 100 MHz (100 MIPS) | 100 MHz | 100 MHz | 100 MHz | 100 MHz (main core) |
| Program Flash | 64 KB ECC | 64 KB ECC | 128 KB ECC | 64 KB ECC | 64 KB ECC |
| Temperature Range | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) |
| CAN FD | Yes | Yes | Yes | Yes | Yes |
| Core Count | 1 | 1 | 1 | 1 | 2 (dual-core) |
Key Differentiators
- Extended-temperature option in identical footprint (vs DSPIC33CK64MP503-E/M5)
- 2x program memory in the same 36-pin M5 footprint (vs DSPIC33CK128MC503T-I/M5)
- Single-core simplicity vs dual-core sibling (vs DSPIC33CH64MP503-I/M5)
Design Notes
The 36-UQFN (M5) package has an exposed pad that must be soldered to a grounded copper pour - do not treat it as optional. Connect all VDD/VSS pin pairs with 100 nF ceramic decoupling capacitors placed within 2 mm of each pin pair, plus one bulk 10 uF capacitor per supply domain. Because peripheral pins are assigned via Peripheral Pin Select (PPS), reserve flexibility in early layout by routing several GPIO fan-outs; but ICSP pairs must remain matched (PGECx with PGEDx) and accessible on a programming header per Microchip programming documentation.
Operate the device from a clean 3.3V rail within the 3.0V-3.6V datasheet operating range. Digital power converters driven from this controller routinely toggle high-current loads, so isolate the controller's VDD domain from gate-driver supply transients with an LC or ferrite filter, and enable the internal brown-out reset with an appropriate trip point in configuration words. Estimated: a 100 MHz dsPIC33CK core draws on the order of tens of mA, which at 3.3V stays well under 0.2 W - no heatsink is required, but the exposed pad still needs grounding for signal integrity.
Common failure modes in first-revision designs: (1) forgetting to connect the exposed pad, causing flaky ground returns under high ADC sampling rates; (2) mismatched ICSP pair selection - PGEC2 must pair with PGED2, not PGED1, or programming fails; (3) exceeding the 3.6V absolute supply range when tying VDD to a 5V rail - always use an LDO or buck to 3.3V; (4) relying on default pin maps instead of verifying PPS assignments, which silently relocates PWM/ADC functions. Cross-check the final pin map against the datasheet 36-pin M5 pin diagram before release.
Compliance Information
RoHS/lead-free status per standard Microchip commercial product offering; detailed REACH and conflict-minerals declarations should be confirmed from Microchip's product compliance portal.
