DSPIC33CK64MC103-I/M5 - 100MHz DSC, 64KB Flash | Microchip
MPN: DSPIC33CK64MC103-I/M5 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.1 | $3.10 |
| 10 | $2.85 | $28.50 |
| 100 | $2.6 | $260.00 |
| 500 | $2.42 | $1,210.00 |
| 1,000 | $2.24 | $2,240.00 |
DSPIC33CK64MC103-I/M5 Overview
A digital signal controller combines the computational throughput of a DSP with the peripheral set and control architecture of a microcontroller. Within the power management IC and embedded processing hierarchy, DSCs occupy the niche where deterministic, cycle-accurate control loops are required, making the dsPIC33CK family a popular choice over general-purpose MCUs for field-oriented motor control and digital power conversion.
Key features include deterministic 100 MIPS performance from a modified Harvard architecture, Flash ECC and fault-injection testing support for functional safety designs, and SRAM with Memory Built-In Self-Test (MBIST). The high-resolution PWM module delivers fine edge placement for power converters, while the 12-bit ADC supports high-speed sampling of current and voltage feedback signals. Integrated op amps reduce external component count in current-sensing circuits.
Architecturally, the dsPIC33CK core uses DSP multiply-accumulate instructions and hardware looping, enabling FOC (Field-Oriented Control) loop execution at rates unattainable by classic 8-bit MCUs. The -I temperature suffix guarantees operation from -40C to +85C (industrial grade), with the core running at full 100 MIPS across this range.
Typical applications include brushless DC and PMSM motor control (FOC), digital power supplies and PFC stages, advanced sensing front ends, and capacitive touch interfaces. The integrated analog peripherals make it especially efficient in compact, cost-sensitive control boards.
Design consideration: the device operates only from a 3.0V to 3.6V rail, so 5V systems require an LDO or buck regulator, and all I/O must respect 3.6V absolute maximum levels.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33CK64MC103-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 DSPIC33CK64MC103-I/M5 (same form factor and footprint) — differing in ADC Resolution, Core Architecture, Package.
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Request AlternativesDSPIC33CK64MC103-I/M5 Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33CK DSC core |
| Maximum Clock Frequency | 100 MHz (100 MIPS) |
| Program Flash | 64 KB (with ECC) |
| Data SRAM | 8 KB (with MBIST) |
| Supply Voltage Range | 3.0 V to 3.6 V |
| ADC Resolution | 12-bit |
| Package | 36-pin UQFN, 5x5 mm |
| Operating Temperature | -40C to +85C (industrial, -I suffix) |
| Peripherals | Op Amps, Comparators, High-Resolution PWM, High-Speed ADC |
| Mounting Type | Surface Mount |
| Family | dsPIC33CK64MC10X (single-core DSC) |
| DSP Engine | Integrated DSP MAC instructions, hardware looping |
| Touch Sensing Support | Yes (capacitive touch) |
| Functional Safety Features | Flash ECC, fault injection testing, SRAM MBIST |
| Programming/Debug | ICSP via PGECx/PGEDx pairs (e.g. PGEC2/PGED2) |
| RoHS Status | Compliant |
DSPIC33CK64MC103-I/M5 36-pin uqfn, 5x5 mm Pin Configuration Guide
Pin configuration for DSPIC33CK64MC103-I/M5 (36-pin 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 DSPIC33CK64MC103-I/M5.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK64MC103-I/M5 is suitable for 6 applications: BLDC/PMSM Motor Control (FOC), Digital Power Conversion, Advanced Sensing and Signal Conditioning, Capacitive Touch Interfaces, Industrial Automation and Robotics, Appliance and Consumer Motor Systems.
BLDC/PMSM Motor Control (FOC)
The DSPIC33CK64MC103-I/M5 is engineered for Field-Oriented Control of brushless DC and permanent-magnet synchronous motors. Its deterministic 100 MIPS core with single-cycle DSP MAC instructions executes current and speed loops fast enough for low-inductance motors, while the high-resolution PWM delivers fine edge placement for sinusoidal drive with minimal torque ripple. The 12-bit high-speed ADC samples phase currents, and the integrated op amps amplify shunt signals without external components, cutting BOM cost on compact control boards. Placed as the sole MCU on the inverter control card, it drives the gate-driver PWM inputs directly; the main trade-off is the 3.0V to 3.6V supply domain, which must be level-shifted against 5V gate drivers.
Recommended
Digital Power Conversion
Digital AC-DC, DC-DC, and PFC stages benefit from the DSPIC33CK64MC103-I/M5's high-resolution PWM, whose fine duty and phase resolution enables precise control of switching edges in half-bridge, LLC, and totem-pole topologies. The 100 MIPS core closes voltage and current loops deterministically at high switching frequencies, and the 12-bit ADC with integrated op amps conditions current-shunt and voltage-divider feedback on-chip, reducing analog front-end component count. Flash ECC and SRAM MBIST support the functional-safety documentation increasingly required in server and telecom power designs. The key design consideration is loop software timing: with a single core, compensation-loop ISR execution must be budgeted carefully against the switching frequency.
Recommended
Advanced Sensing and Signal Conditioning
Sensor-front-end designs use the DSPIC33CK64MC103-I/M5's integrated op amps and 12-bit ADC to amplify and digitize signals from pressure, current, and position sensors in a single IC. The 100 MHz core applies DSP filtering - IIR/FIR, FFT-based analysis, or oversampling with decimation - in real time, enabling measurement-grade resolution from modest hardware. On-chip comparators provide fast over-threshold trips independent of software, useful for protective cutoffs in industrial sensing. Because the analog chain is internal, layout-induced noise pickup is reduced versus discrete amplifier solutions, though the 3.6V supply ceiling limits the common-mode input range and must be considered when scaling sensor outputs.
Recommended
Capacitive Touch Interfaces
Microchip positions the dsPIC33CK64MC10X family for touch applications, and the DSPIC33CK64MC103-I/M5 implements capacitive touch scanning using its ADC and charge-transfer timing resources with the Microchip touch library. The 100 MIPS core executes noise-filtering and baseline-tracking algorithms fast enough to maintain reliability in noisy motor-drive environments - a common requirement in appliance controls that combine touch panels with inverter-driven motors. Integrating touch, display logic, and motor or load control on one DSC removes a dedicated touch controller from the BOM. Designers should allocate ADC channels and ISR budget between touch scanning and control loops, and follow Microchip's touch layout guidelines for electrode and ground design.
Recommended
Industrial Automation and Robotics
In industrial motion and actuation nodes, the DSPIC33CK64MC103-I/M5 combines deterministic 100 MIPS control with Flash ECC and SRAM MBIST, supporting the functional-safety analyses required in factory automation and collaborative robotics. The high-resolution PWM drives servo and stepper stages, the 12-bit ADC and op amps read encoders, current sensors, and position feedback, and communication is handled through its serial peripherals for networked operation. Its -40C to +85C industrial rating suits control cabinets and motor-integrated electronics. The single-core architecture keeps control timing jitter minimal, but designers needing protocol stack and real-time control isolation may prefer the dual-core dsPIC33CH siblings.
Recommended
Appliance and Consumer Motor Systems
Fans, pumps, compressors, and power tools increasingly use sensorless FOC for efficiency and acoustic benefits, and the DSPIC33CK64MC103-I/M5 delivers this at consumer price points - its dsPIC33CK Value Line relatives sell for well under a dollar at volume, underscoring the family's cost position. The DSC runs sensorless observers (sliding-mode or flux estimators) on its DSP engine, while the high-resolution PWM minimizes switching acoustic noise. Integrated op amps and the 12-bit ADC support single-shunt current reconstruction, reducing component count on cost-driven mainboards. Design consideration: consumer mains-powered products need robust EMI and surge protection around the 3.3V controller domain, including isolation from the rectified mains stage.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK64MC103-I/M5 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK32MC103-I/M5 | DSPIC33CK16MC103-I/M5 | DSPIC33CK64MC102-I/M5 | DSPIC33CK64MC103-E/M5 |
|---|---|---|---|---|---|
| Package | 36-UQFN (5x5) | 36-UQFN (5x5) - same | 36-UQFN (5x5) - same | 36-UQFN (5x5) - same | 36-UQFN (5x5) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) |
| Program Flash | 64 KB | 32 KB | 16 KB | 64 KB | 64 KB |
| On-Chip Op Amps | Yes | Yes | Yes | No (MC102 variant omits op amps) | Yes |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C (extended) |
| 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 | 3.0 V to 3.6 V |
| Safety Features | Flash ECC, fault injection, MBIST | Flash ECC, fault injection, MBIST | Flash ECC, MBIST | Flash ECC, MBIST | Flash ECC, fault injection, MBIST |
Key Differentiators
- Largest Flash in the same 36-UQFN drop-in footprint (vs DSPIC33CK32MC103-I/M5)
- Integrated op amps reduce external BOM (vs DSPIC33CK64MC102-I/M5)
- Industrial temperature rating for cost-optimized designs (vs DSPIC33CK64MC103-E/M5)
- Trade-off: 64 KB Flash ceiling within the same package (vs DSPIC33CK512MP606T-I/PT)
Design Notes
The dsPIC33CK64MC103 operates only from a 3.0V to 3.6V rail. In 5V or 24V industrial systems, derive the controller supply with a 3.3V LDO or buck regulator, and place a 0.1 uF ceramic decoupling capacitor at each VDD pin plus a bulk 10 uF capacitor nearby. All I/O must stay below 3.6V absolute maximum - use level shifters or series resistors when interfacing 5V gate drivers or sensors. Estimated: at typical operating currents of tens of mA, dissipation in the 36-UQFN stays well within thermal limits without heatsinking.
For ICSP programming/debugging, the device has multiple PGECx/PGEDx pairs and they must be used as matched pairs - if PGEC2 carries ICSPCLK, then PGED2 must carry ICSPDAT (per Microchip documentation and Northern Software dev notes). Do not mix pins from different pairs. Also reserve the programming pair header on production PCBs; retrofitting test points after layout is costly. Avoid assigning the chosen PGED/PGEC pins to analog functions in final firmware.
For motor-control layouts, keep the ADC input traces from current shunts to the CPU board short and route them as a differential pair away from PWM switching nodes; use the internal op amps with Kelvin-sensed shunt connections to preserve accuracy. Provide a solid ground plane beneath the 36-UQFN and connect the exposed pad to ground with an array of vias for thermal and signal-integrity performance. Place the high-resolution PWM output traces to gate drivers away from sensitive analog feedback lines to prevent duty-cycle jitter from crosstalk.
The 36-UQFN (5x5 mm) package relies on the PCB for heat dissipation via the exposed pad. Estimated: a DSC running 100 MHz with active analog peripherals typically dissipates well under 0.5 W, which with a reasonable copper area keeps junction temperature comfortably inside the -40C to +85C industrial envelope. For -E extended-temperature variants used near +125C ambient, verify junction temperature with the datasheet thermal resistance figures and increase copper pour area as needed.
Compliance Information
RoHS compliance and lead-free status per distributor listings (LCSC, Mouser, DigiKey). REACH, halogen-free, and conflict-minerals declarations not stated in the provided data - consult Microchip environmental documentation.
