DSPIC33CK32MC103T-I/M5 - 100MHz 16-bit DSC 32KB Flash | Microchip
MPN: DSPIC33CK32MC103T-I/M5 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.76 | $1.76 |
| 10 | $1.6 | $16.00 |
| 100 | $1.35 | $135.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.65 | $650.00 |
DSPIC33CK32MC103T-I/M5 Overview
A digital signal controller combines the compute power of a digital signal processor with the control peripherals of a microcontroller. In the power-management hierarchy, the dsPIC33CK sits above general-purpose MCUs in the dsPIC33C family tree, targeting real-time control loops such as motor Field-Oriented Control (FOC) and digital power conversion where deterministic interrupt latency and math acceleration matter most.
Key features include a 12-bit, 3.5 Msps ADC with multiple channels, three integrated analog op amps, one analog comparator, a 12-bit DAC, and 4x2 high-speed PWM channels with 2 ns resolution for dead-time-critical switching topologies. Four DMA channels offload data movement, and three serial communication ports (UART, SPI, I2C) cover connectivity needs.
Architecturally, the dsPIC33CK core is a modified Harvard 16-bit pipeline with DSP multiply-accumulate instructions, designed for single-cycle MAC operations used in control mathematics and filtering. Flash ECC and Memory Built-in Self-Test (MBIST) support functional-safety (FuSa) development flows per Microchip for automotive and industrial applications.
Typical applications include brushless DC and PMSM motor control, digital power supplies (LLC, totem-pole PFC), LED drivers, and battery management systems where the 2 ns PWM resolution and fast ADC directly improve control-loop bandwidth and efficiency.
Design consideration: the part operates from 3.0 V to 3.6 V; plan a clean 3.3 V rail with local decoupling and verify the -40C to +125C industrial temperature rating against your junction-temperature estimate.
This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design guidance not found in the manufacturer datasheet, verified against data as of 2026-09-23.
Drop-in alternatives for DSPIC33CK32MC103T-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 DSPIC33CK32MC103T-I/M5 (same form factor and footprint) — differing in Operating Temperature, Package, RoHS Status, Packaging, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK32MC103-I/M5
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK32MC103T-E/M5
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK32MC103T-E/M5VAO
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK64MC103T-I/M5
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.58 / Unit
View Datasheet →DSPIC33CK16MC103T-I/M5
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK128MC503T-I/M5
✅ Drop-In✓ In Stock
$3 / Unit
View Datasheet →DSPIC33CK32MC103T-I/M5 Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33CK DSC core |
| Maximum Clock Frequency | 100 MHz |
| Performance | Up to 100 MIPS |
| Program Memory (Flash) | 32 KB with ECC |
| Data SRAM | 8 KB with MBIST |
| Operating Voltage Range | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +125C |
| ADC Resolution and Speed | 12-bit, up to 3.5 Msps (family) |
| Integrated Op Amps | 3 |
| Analog Comparators | 1 |
| DAC | 12-bit |
| PWM Channels | 4x2 high-speed PWM, 2 ns resolution (family) |
| DMA Channels | 4 |
| Serial Interfaces | 3 serial I/O ports (UART/SPI/I2C) |
| Timers | 3 timers |
| Package | 36-UQFN (5x5 mm) |
| Mounting Type | Surface Mount |
| Packaging | Tape and Reel (T) |
| RoHS Status | Compliant |
DSPIC33CK32MC103T-I/M5 36-uqfn (5x5 mm) Pin Configuration Guide
Pin configuration for DSPIC33CK32MC103T-I/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 DSPIC33CK32MC103T-I/M5.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK32MC103T-I/M5 is suitable for 6 applications: BLDC/PMSM Motor Control (FOC), Digital Power Conversion (LLC, Totem-Pole PFC), Battery Management and Charging Systems, Industrial Automation and Robotics, LED Lighting and Electronic Ballasts, Embedded Sensing and IoT Edge Nodes.
BLDC/PMSM Motor Control (FOC)
The DSPIC33CK32MC103T-I/M5 fits sensorless and sensored Field-Oriented Control directly: its 100 MHz dsPIC33CK core delivers 100 MIPS with single-cycle DSP MAC instructions for the Clarke/Park transforms, while 4x2 high-speed PWM channels with 2 ns resolution give precise dead-time and complementary outputs for three-phase inverters. The 12-bit/3.5 Msps ADC samples phase currents within the PWM period, and the three on-chip op amps amplify low-side shunt signals without external amplifiers. Typical topology: PWM drives a MOSFET gate stage, ADC triggers on PWM boundaries, and the 32KB ECC Flash holds the full FOC stack and start-up algorithm at the dsPIC33CK Value Line price point.
Recommended
Digital Power Conversion (LLC, Totem-Pole PFC)
Digital power supplies require deterministic loop closure at switching frequency, and the DSPIC33CK32MC103T-I/M5 meets this with a 100 MHz core, 2 ns PWM resolution for phase-shift and frequency modulation, and a 3.5 Msps ADC for synchronous current sampling. The one analog comparator supports fast cycle-by-cycle overcurrent protection independent of CPU load. Placed as the sole controller of an LLC or totem-pole PFC stage, it replaces analog control ICs while adding adaptive dead-time and digital telemetry over UART/I2C. The 3.0 V to 3.6 V supply range suits isolated bias rails, and ECC Flash protects firmware integrity in always-on power systems.
Recommended
Battery Management and Charging Systems
In BMS and smart-charger designs, the DSPIC33CK32MC103T-I/M5 combines the acquisition and control peripherals needed for accurate cell monitoring: the 12-bit ADC with 3.5 Msps capability and multiple channels reads stacked cell voltages and shunt current, the three op amps buffer sensor outputs, and the 12-bit DAC generates reference thresholds for the comparator-based protection path. High-resolution PWM controls the charge-converter stage with 2 ns granularity, improving efficiency at light load. Operating from -40C to +125C, the part covers battery-pack environments, while 32KB ECC Flash stores state-of-charge algorithms and safety logs. Serial ports (UART/SPI/I2C) link to AFE front ends and host controllers.
Recommended
Industrial Automation and Robotics
Factory equipment needs real-time control plus communication, and the DSPIC33CK32MC103T-I/M5 provides 100 MIPS of headroom for multi-axis servo inner loops, three serial ports for encoder and host links, and four DMA channels that stream ADC data without CPU intervention. The high-speed PWM generates precise motion-control waveforms, and the industrial -40C to +125C rating suits panel and motor-mounted electronics. In robotic joint drivers, the on-chip op amps condition current-sense signals for torque estimation, keeping the BOM compact. The Functional Safety (FuSa) features of the dsPIC33CK family - Flash ECC and MBIST - support safety-oriented industrial designs per Microchip documentation.
Recommended
LED Lighting and Electronic Ballasts
High-power LED drivers benefit from the 2 ns PWM resolution of the DSPIC33CK32MC103T-I/M5, which enables fine dimming granularity and constant-current regulation across a wide output range. The 12-bit ADC monitors output current and temperature sensors, the comparator implements fast fault shutdown, and the 100 MHz core runs adaptive control plus DMX/UART or DALI-style interfaces on its serial ports. In resonant LED ballasts, the same 4x2 high-speed PWM drives half-bridge stages with phase-shift control. The compact 5x5 mm UQFN fits lamp-driver form factors, and volume pricing near $0.65 makes it cost-effective for lighting OEMs as of 2026-09-23.
Recommended
Embedded Sensing and IoT Edge Nodes
For smart sensor nodes, the DSPIC33CK32MC103T-I/M5 integrates the complete analog front end: three op amps for signal conditioning, a 12-bit/3.5 Msps ADC for acquisition, a 12-bit DAC for stimulus generation, and a comparator for threshold alarms - all inside one 5x5 mm package. The 100 MHz DSP core performs real-time filtering (FIR/IIR) and FFT-based feature extraction locally, reducing cloud dependency. UART, SPI, and I2C interfaces connect to radios and memory, and four DMA channels keep sampling deterministic. The 8KB SRAM buffers waveform captures, while the industrial temperature range and RoHS-compliant UQFN package suit both indoor controllers and harsh-environment edge deployments.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK32MC103T-I/M5 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK32MC103-I/M5 | DSPIC33CK32MC103T-E/M5 | DSPIC33CK64MC103T-I/M5 | DSPIC33CK128MC503T-I/M5 |
|---|---|---|---|---|---|
| Package | UQFN-36 (5x5 mm) | UQFN-36 (5x5) - same | UQFN-36 (5x5) - same | UQFN-36 (5x5) - same | UQFN-36 (5x5) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 32 KB (ECC) | 32 KB (ECC) | 32 KB (ECC) | 64 KB (ECC) | 128 KB (ECC) |
| Max Clock / Performance | 100 MHz / 100 MIPS | 100 MHz / 100 MIPS | 100 MHz (64 MHz stated at E-grade per Microchip USA) | 100 MHz / 100 MIPS | 100 MHz / 100 MIPS |
| Analog Integration | 12-bit ADC, 3 op amps, 1 comparator, 12-bit DAC | Same (identical die) | Same (identical die) | Same family analog set | Same family analog set |
| Packaging Format | Tape & Reel (T) | Tray/Tube | Tape & Reel | Tape & Reel | Tape & Reel |
Key Differentiators
- Lowest-cost 32KB point in the UQFN-36 M5 footprint (vs DSPIC33CK128MC503T-I/M5)
- Industrial I-grade with 100 MHz full-speed rating (vs DSPIC33CK32MC103T-E/M5)
- Upgrade path without respin (vs DSPIC33CK64MC103T-I/M5)
Design Notes
Supply the DSPIC33CK32MC103T-I/M5 from a clean 3.0 V to 3.6 V rail (nominal 3.3 V). Place a 0.1 uF ceramic capacitor on every VDD pin within 2 mm of the package, plus one 4.7 uF to 10 uF bulk capacitor near the device. Because the ADC, op amps, and DAC share the supply, switching-regulator ripple appears directly in ADC readings; an RC filter or small LDO feeding the analog rail improves effective ADC resolution. Verify brown-out settings so PWM outputs tri-state safely during supply dips.
The 36-UQFN 5x5 mm package has a central exposed thermal pad that must be soldered to a grounded copper pour with an array of vias - it provides the main ground return and heat path. Route PWM outputs away from ADC input traces, and keep the shunt-sense op amp inputs as Kelvin connections directly at the sense resistors. Follow Microchip's dsPIC33CK layout guidelines and reference the Curiosity Nano dsPIC33CK64MC105 board layout as a proven example.
Do not assume fixed peripheral pin assignments: dsPIC33CK peripherals use Peripheral Pin Select (PPS), so configure mapping in firmware before hardware validation. The E-grade parts are specified differently from I-grade (Microchip USA lists 64 MHz max at the E temperature rating) - check the correct datasheet column before qualifying E parts as substitutes. When migrating Flash sizes within the M5 footprint, confirm linker script and programming voltage settings in MPLAB X to avoid boot failures.
For FOC designs, synchronize ADC sampling to the PWM using the ADC trigger-from-PWM feature so current samples land away from switching edges - this prevents switching noise from corrupting the phase-current readings. Keep the comparator-based overcurrent path short and analog, since it must react faster than any firmware loop. Terminate UART/SPI lines routed longer than 10 cm with appropriate series resistors to control ringing at the 100 MHz system clock harmonics.
Compliance Information
RoHS compliant per LCSC and Microchip product listings as of 2026-09-23. The I-suffix part is industrial grade; AEC-Q100 qualification applies to the E-suffix variants (DSPIC33CK32MC103T-E/M5, E/M5VAO).
