DSPIC33CK128MC505T-I/M7 - 100MHz 16-bit DSC, CAN FD | Microchip
MPN: DSPIC33CK128MC505T-I/M7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.18 | $6.18 |
| 10 | $5.55 | $55.50 |
| 100 | $4.93 | $493.00 |
| 500 | $4.45 | $2,225.00 |
| 1,000 | $3.98 | $3,980.00 |
DSPIC33CK128MC505T-I/M7 Overview
A digital signal controller combines the computational power of a DSP with the peripheral integration and ease of use of a microcontroller. Within the power-management hierarchy of embedded systems, the dsPIC33CK family sits at the level of a 16-bit MCU/DSC optimized for real-time closed-loop control, sitting above general-purpose PIC16/PIC18 MCUs and below 32-bit application processors. DSCs are the workhorse of digital power conversion and motor control because they execute fast math-intensive control loops deterministically.
Key differentiating features include the 100 MIPS dsPIC33CK core with DSP engine, integrated operational amplifiers that reduce external analog component count, a high-speed 12-bit ADC, and a CAN FD module for automotive and industrial networking. Multiple PWM channels support advanced motor-control and digital-power topologies with dead-time insertion and complementary outputs.
On the technical side, the dsPIC33CK core uses an enhanced Harvard architecture with a single-cycle MAC and dual operand fetch, enabling filter and transform execution in real time. DMA channels offload the CPU for ADC-to-RAM streaming, and the internal oscillator (with PLL) allows full-speed 100 MHz operation without an external crystal, saving board space. An extended-temperature E/M7 variant is offered for harsh environments.
Typical applications include brushless DC and PMSM motor control (FOC), digital power supplies such as LLC and totem-pole PFC, CAN FD nodes in automotive body and powertrain domains, and industrial automation sensing nodes where on-chip op-amps condition current-shunt signals directly.
For design, budget the VCAP pin capacitor exactly as specified in the Microchip datasheet and keep the analog supply (AVDD/AVSS) plane separate from digital switching currents to preserve 12-bit ADC accuracy.
This page synthesizes distributor inventory, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single verified reference point.
Drop-in alternatives for DSPIC33CK128MC505T-I/M7 — 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 DSPIC33CK128MC505T-I/M7 (same form factor and footprint) — differing in ADC Resolution, Core, Data Bus Width, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK256MC505T-I/M7
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK64MC505T-I/M7
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK128MC505T-E/M7
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK128MC505-I/M7
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK128MC505T-I/M7 Maximum Ratings & Electrical Characteristics
| Core | dsPIC33CK (16-bit DSC core with DSP) |
| Core Speed | 100 MHz (100 MIPS) |
| Program Memory Size | 128 KB (128K x 8) Flash |
| RAM Size | 16 KB |
| Data Bus Width | 16 bit |
| ADC Resolution | 12 bit |
| Integrated Op-Amps | Yes (on-chip operational amplifiers) |
| CAN Interface | CAN FD |
| PWM Channels | Yes (advanced PWM, motor control) |
| DMA Channels | 4 |
| External Interrupts | 4 |
| Oscillator Type | Internal |
| Operating Temperature | -40 C to +85 C |
| Package / Case | 48-VQFN (6x6 mm) |
| Package Dimensions | 6 x 6 x 0.9 mm |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (T/R) |
| RoHS Status | Compliant |
DSPIC33CK128MC505T-I/M7 6 x 6 x 0.9 mm Pin Configuration Guide
Pin configuration for DSPIC33CK128MC505T-I/M7 (6 x 6 x 0.9 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 DSPIC33CK128MC505T-I/M7.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK128MC505T-I/M7 is suitable for 6 applications: BLDC / PMSM Motor Control (FOC), Digital Power Supplies (LLC, PFC), CAN FD Automotive Nodes, Industrial Automation and Sensing, Embedded Audio and Signal Processing, Battery-Powered and Portable Equipment.
BLDC / PMSM Motor Control (FOC)
The DSPIC33CK128MC505T-I/M7 fits field-oriented motor control because its 100 MHz (100 MIPS) dsPIC33CK core executes the Clarke/Park transforms and PI current loops deterministically at high PWM frequencies, while the 12-bit ADC samples phase currents and the integrated op-amps amplify low-level shunt signals without external amplifiers. The advanced PWM module generates complementary outputs with hardware dead-time insertion, and 4 DMA channels stream ADC results into RAM so loop latency stays constant. For a typical 20-50 kHz FOC loop, the on-chip DSP MAC keeps cycle counts low, leaving margin for supervisory code. Use the internal oscillator with PLL to reach 100 MHz without a crystal, but add an external comparator path for overcurrent trip to meet safety reaction times.
Recommended
Digital Power Supplies (LLC, PFC)
In digital power conversion, the DSPIC33CK128MC505T-I/M7 closes voltage and current loops for LLC resonant converters, totem-pole PFC, and synchronous buck stages. Its 100 MHz core supports control bandwidths well above audible frequency, the high-speed 12-bit ADC captures fast transients on output voltage and inductor current, and the PWM module implements phase-shift and complementary gating with dead time. On-chip op-amps condition current-shunt feedback, reducing BOM cost versus external amplifiers. Place the ADC sampling synchronized to the PWM period to avoid switching-noise artifacts, and reserve a hardware fault input to force PWM outputs into a safe state within nanoseconds during overcurrent events, independent of CPU software response.
Recommended
CAN FD Automotive Nodes
The DSPIC33CK128MC505T-I/M7 serves body-control, actuator, and sensor nodes migrating from Classical CAN to CAN FD, thanks to its integrated CAN FD controller supporting 64-byte payloads and faster data-phase bit rates. The 100 MHz core handles application logic plus network stack overhead simultaneously, while the industrial -40 C to +85 C temperature range (I suffix) covers under-hood-adjacent environments; the E/M7 extended variant covers harsher zones. Because the device integrates the CAN FD peripheral on-chip, only an external CAN transceiver is needed on the bus side. Choose the 128 KB Flash version for protocol-heavy stacks, or its 256 KB sibling when adding OTA-update firmware double-banking is required.
Recommended
Industrial Automation and Sensing
For industrial automation equipment, the DSPIC33CK128MC505T-I/M7 combines a DSP-grade core with rich analog integration, making it suitable for smart sensors, actuator controllers, and factory automation I/O modules. The 12-bit ADC plus on-chip op-amps digitize 4-20 mA and resistive-bridge sensor signals directly, PWM outputs drive heaters or small actuators, and CAN FD links the node to the plant network. The 100 MHz core runs filtering (IIR/FIR) and feature extraction locally, reducing host traffic. Use the 4 external interrupts for fast encoder or limit-switch response, and dedicate DMA channels to continuous ADC scanning so loop determinism is preserved even while the communication stack runs.
Recommended
Embedded Audio and Signal Processing
The DSP engine of the DSPIC33CK128MC505T-I/M7 - single-cycle MAC with dual operand fetch at 100 MHz - executes FIR and IIR filters, mixing, and envelope processing in real time for cost-sensitive audio products such as electronic appliance sound, alarm generators, and simple DSP effects. The 12-bit ADC can capture microphone or line-level inputs (with the on-chip op-amp as a gain stage), and PWM-based or external DAC outputs reconstruct the signal. While 16 KB RAM limits long delay lines, it is sufficient for moderate-length filters and echo effects. For high-fidelity applications use a dedicated codec, but for embedded sound generation the integration and price of this DSC are hard to beat.
Recommended
Battery-Powered and Portable Equipment
The DSPIC33CK128MC505T-I/M7 is appropriate for battery-powered tools, chargers, and portable instrumentation that still need control-loop intelligence. Its internal oscillator removes the crystal from the BOM, and low-power sleep and idle modes stretch battery life between control bursts; consult the datasheet current-consumption tables for exact figures per mode. The 12-bit ADC monitors cell voltage, current, and temperature, PWM regulates charger power stages, and CAN FD communicates with the host system in e-mobility products. Design the VCAP pin and power sequencing exactly per the datasheet to guarantee reliable startup, and use DMA-driven ADC scanning so the CPU can sleep between samples, reducing average consumption.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK128MC505T-I/M7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK256MC505T-I/M7 | DSPIC33CK64MC505T-I/M7 | DSPIC33CK128MC505T-E/M7 | DSPIC33CK128MC503T-I/M5 |
|---|---|---|---|---|---|
| Package | 48-VQFN (6x6 mm) | 48-VQFN (6x6 mm) - same | 48-VQFN (6x6 mm) - same | 48-VQFN (6x6 mm) - same | 44-VQFN (M5) - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 100 MHz (100 MIPS) | 100 MHz | 100 MHz | 100 MHz (64 MHz stated by Microchip USA listing - verify) | 100 MHz |
| Program Memory (Flash) | 128 KB | 256 KB | 64 KB | 128 KB | 128 KB |
| CAN FD | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (extended) | -40 C to +85 C |
| Packaging | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel |
Key Differentiators
- Double the Flash headroom option in the same footprint (vs DSPIC33CK256MC505T-I/M7)
- Extended temperature availability on the same die (vs DSPIC33CK128MC505T-E/M7)
- 48-pin I/O density vs the 44-pin family sibling (vs DSPIC33CK128MC503T-I/M5)
- Lower program memory cost option (vs DSPIC33CK64MC505T-I/M7)
Design Notes
The dsPIC33CK requires the VCAP pin capacitor (typically a single capacitor to the internal 1.8V core regulator, exact value specified in the Microchip datasheet) placed within a few millimeters of the pin with a solid ground return. Omitting or undervaluing this capacitor is the most common cause of erratic startup and brown-out resets. Decouple each VDD pin with 0.1 uF ceramic, and keep AVDD fed through an RC or ferrite filter from the 3.3V rail to preserve 12-bit ADC accuracy under PWM load transients.
On the 48-VQFN 6x6 mm M7 footprint, connect the exposed thermal pad to a ground plane array of at least 9 vias to improve heat dissipation and reduce ground bounce between the digital core and analog front end. Route CAN FD and high-slew PWM traces away from the op-amp and ADC input nets; dsPIC33CK Peripheral Pin Select (PPS) allows remapping functions, so finalize pin assignment before layout freeze to minimize crossings. Keep shunt-sense routing Kelvin-connected to the op-amp input pins.
Do not copy pin maps from dsPIC33F designs: the dsPIC33CK family uses Peripheral Pin Select for many digital functions, and pin functions differ between the MC503/MC504/MC505 package variants. Verify the supply voltage range against the family datasheet before reusing a 3.3V rail design from another dsPIC generation, and confirm the oscillator configuration bits - the 100 MHz internal FRC+PLL setting differs from older 70 MHz dsPIC33 parts. For Tape & Reel (T suffix) parts, confirm reflow profile compatibility with MSL rating printed on the reel label.
Compliance Information
RoHS compliant per Newark product listing for DSPIC33CK128MC505T-I/M7. REACH, halogen-free and conflict-minerals status not stated in provided data.
