DSPIC33CK64MC105T-I/M4 - 16-bit 100MHz DSC 64KB Flash | Microchip
MPN: DSPIC33CK64MC105T-I/M4 ✓ Active| Qty | Unit Price | Extended |
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DSPIC33CK64MC105T-I/M4 Overview
A digital signal controller combines the computational capability of a DSP with the peripheral integration and control architecture of a microcontroller. Within the power-management hierarchy, the dsPIC33CK family sits in Microchip's 16-bit MCU/DSC portfolio, targeting real-time control loops where deterministic single-cycle MAC and DSP instructions matter, such as motor field-oriented control (FOC) and digital power conversion.
Key features include a 12-bit ADC running at up to 3.5 Msps across 15 channels with simultaneous multi-channel sampling, three integrated operational amplifiers that off-board external analog front ends, one analog comparator, and a 12-bit DAC reference output. Four high-speed PWM modules (4x2 channels) offer 2 ns edge resolution, enabling very high-frequency power stages and precision dead-time control.
Technically, the dsPIC33CK core uses a modified Harvard architecture with an enhanced instruction set including DSP support (single-cycle MAC, barrel shifter), hardware ECC on program Flash, Memory Built-In Self-Test (MBIST) on SRAM, and four DMA channels for low-latency data movement without CPU intervention. The part operates from a 3.0 V to 3.6 V single supply and is rated -40C to +85C for the industrial temperature suffix, with derated 70 MIPS operation up to +150C junction on extended variants per the family data sheet.
Typical applications include brushless DC and PMSM motor FOC drives, power factor correction (PFC) stages, digital SMPS, and sensor fusion in industrial automation. Microchip reference designs such as the MCHV-3 PFC reference design explicitly use the dsPIC33CK64MC105.
Design consideration: because the ADC and PWM clocks derive from internal PLL configuration, validate your oscillator startup and PLL lock settings early; the 2 ns PWM resolution only holds within specified VDD (3.0-3.6 V) and temperature ranges.
This page synthesizes distributor listings, family datasheet parameters, and drop-in alternative analysis not consolidated on the manufacturer product page alone.
Drop-in alternatives for DSPIC33CK64MC105T-I/M4 — 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 DSPIC33CK64MC105T-I/M4 (same form factor and footprint) — differing in Core, Operating Temperature, PWM, Packaging.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK32MC105-E/M4
✅ Drop-In✓ In Stock
$3.2 / Unit
View Datasheet →DSPIC33CK64MC105T-E/M4
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
DSPIC33CK64MC105T-I/PT
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$3.52 / Unit
View Datasheet →DSPIC33CK64MC105T-I/M4 Maximum Ratings & Electrical Characteristics
| Core | dsPIC33CK (16-bit DSC) |
| Architecture | Modified Harvard, 16-bit |
| Maximum Clock Frequency | 100 MHz (100 MIPS) |
| Program Flash Size | 64 KB (with ECC) |
| Data RAM Size | 8 KB |
| Operating Supply Voltage | 3 V to 3.6 V |
| ADC Resolution | 12-bit |
| ADC Sampling Rate | 3.5 Msps |
| ADC Channels | 15 |
| On-chip Op Amps | 3 |
| Analog Comparators | 1 |
| DAC Resolution | 12-bit |
| PWM | 4x2 high-speed PWM, 2 ns resolution |
| DMA Channels | 4 |
| Package / Case | UQFN-48 (6x6 mm) |
| Operating Temperature | -40C to +85C (70 MIPS operation to +150C per family data sheet) |
| Mounting Style | SMD/SMT |
| Packaging | Reel (Tape & Reel) |
| Special Features | ECC Flash, MBIST, PTG (Peripheral Trigger Generator), Functional Safety (FuSa) support |
DSPIC33CK64MC105T-I/M4 uqfn-48 (6x6 mm) Pin Configuration Guide
Pin configuration for DSPIC33CK64MC105T-I/M4 (uqfn-48 (6x6 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 DSPIC33CK64MC105T-I/M4.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK64MC105T-I/M4 is suitable for 6 applications: PMSM / BLDC Motor Field-Oriented Control, Power Factor Correction (PFC), Digital Switch-Mode Power Supplies (SMPS), Industrial Automation and Sensing Nodes, Evaluating with Curiosity Nano Platform, Sensor Signal Processing and DSP Tasks.
PMSM / BLDC Motor Field-Oriented Control
The DSPIC33CK64MC105T-I/M4 fits sensorless and sensored FOC drives because its 12-bit ADC samples up to 3.5 Msps across 15 channels, allowing phase currents to be captured mid-PWM with minimal latency, while the three on-chip op amps amplify shunt signals without external amplifiers. The 4x2 high-speed PWM with 2 ns edge resolution provides precise complementary outputs with dead-time granularity fine enough for high-frequency inverters. In a typical implementation, the Peripheral Trigger Generator synchronizes ADC sampling to the PWM center, DMA moves results to RAM, and the 100 MHz core executes Clarke/Park transforms and PI loops within one control period. Microchip's MCHV-3 reference design demonstrates exactly this topology using the dsPIC33CK64MC105 PIM.
Recommended
Power Factor Correction (PFC)
For single-stage boost PFC, the DSPIC33CK64MC105T-I/M4 provides the deterministic control timing needed to regulate input current shaping at 100 MIPS. The ADC's 3.5 Msps rate supports inner current-loop bandwidths well above audible range, and the external op-amp configuration (demonstrated in Microchip's official mchv3-dspic33ck64mc105-pfc reference design on GitHub) conditions shunt and bus-voltage feedback. The 12-bit DAC supplies a clean ramp or reference for comparator-based cycle-by-cycle current limiting, protecting the MOSFET during transients. Because PWM edges adjust in 2 ns steps, the firmware can trim duty resolution finely at high switching frequencies, minimizing steady-state limit-cycle oscillation on the output bus voltage.
Recommended
Digital Switch-Mode Power Supplies (SMPS)
In digital SMPS (buck, boost, LLC), the DSPIC33CK64MC105T-I/M4 replaces analog controllers where programmability and telemetry are required. The 2 ns PWM resolution avoids the duty-cycle quantization that plagues lower-resolution digital controllers at switching frequencies above 200 kHz, and the 12-bit/3.5 Msps ADC closes voltage and current loops with sub-microsecond latency. The single comparator provides hardware over-current protection that acts within the same switching cycle, independent of CPU load, while ECC on program Flash ensures firmware integrity over lifetime in always-on power supplies. Operating from a regulated 3.0-3.6 V rail, it integrates cleanly with the auxiliary bias supplies already present in power conversion designs.
Recommended
Industrial Automation and Sensing Nodes
The DSPIC33CK64MC105T-I/M4 serves as the real-time element in factory automation nodes that combine signal conditioning with local control. Its three op amps and 15-channel 12-bit ADC digitize multiple industrial sensors - current transducers, pressure bridges, thermistors - with the DSP instruction set executing filtering (IIR/FIR) and calibration math at 100 MIPS. The Peripheral Trigger Generator sequences sampling autonomously, freeing CPU headroom for communication protocol stacks over UART/SPI/I2C links. The -40C to +85C I-grade rating covers cabinet-free industrial environments, and 64KB of ECC Flash accommodates firmware plus field-updatable parameter storage. The FuSa-oriented memory features (ECC, MBIST) support functional-safety documentation for machinery integration.
Recommended
Evaluating with Curiosity Nano Platform
Microchip ships the dsPIC33CK64MC105 Curiosity Nano evaluation kit, which mounts this exact DSC and provides USB debugging without external tools - an ideal starting point before committing the UQFN-48 part to a custom PCB. On this platform, engineers can exercise the 3.5 Msps ADC, the 2 ns-resolution PWM, the op amps, and the 12-bit DAC using MPLAB X and MPLAB Code Configurator. Because the Curiosity Nano board carries the same 100 MHz dsPIC33CK64MC105 die, firmware validated there ports directly to production hardware; only pin-mapping and board-level analog layout require adaptation. This evaluation path shortens time-to-tape for motor control and digital power projects using the DSPIC33CK64MC105T-I/M4.
Recommended
Sensor Signal Processing and DSP Tasks
The modified Harvard core with single-cycle MAC, DSP-enhanced instruction set, and barrel shifter makes the DSPIC33CK64MC105T-I/M4 effective for embedded signal processing: digital filtering of vibration data, FFT-based condition monitoring, and control-law computation. Four DMA channels stream ADC conversion results to SRAM without CPU intervention, sustaining continuous 3.5 Msps acquisition while the core runs analysis kernels. The 8KB SRAM supports moderate-length buffers, and 64KB ECC Flash holds both firmware and filter coefficient tables safely. For acoustic or power-quality analysis where deterministic timing matters, the Peripheral Trigger Generator aligns processing windows to external events with hardware precision at up to 100 MIPS.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK64MC105T-I/M4 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK32MC105-E/M4 | DSPIC33CK64MC105T-E/M4 | DSPIC33CK64MC105T-I/PT |
|---|---|---|---|---|
| Package | UQFN-48 (6x6) | UQFN-48 (6x6) - same | UQFN-48 (6x6) - same | TQFP-48 - different footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 64 KB (ECC) | 32 KB (ECC) | 64 KB (ECC) | 64 KB (ECC) |
| Data RAM | 8 KB | 8 KB | 8 KB | 8 KB |
| Max Clock / Performance | 100 MHz (100 MIPS) | 100 MHz (100 MIPS; derated at high temp) | 100 MHz (70 MIPS to +150C) | 100 MHz (100 MIPS) |
| Temperature Range | -40C to +85C | Extended (-40C to +150C derated) | Extended (-40C to +150C derated) | -40C to +85C |
| ADC | 12-bit, 3.5 Msps, 15 ch | 12-bit, 3.5 Msps, 15 ch | 12-bit, 3.5 Msps, 15 ch | 12-bit, 3.5 Msps, 15 ch |
| On-chip Op Amps / Comparators | 3 op amps, 1 comparator | 3 op amps, 1 comparator | 3 op amps, 1 comparator | 3 op amps, 1 comparator |
| 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 |
Key Differentiators
- Double the program Flash in identical footprint (vs DSPIC33CK32MC105-E/M4)
- Extended temperature option with zero hardware change (vs DSPIC33CK64MC105T-E/M4)
- Integrated analog front end (vs Generic 16-bit MCUs (e.g., PIC24F class))
Design Notes
Supply the DSPIC33CK64MC105T-I/M4 from a tightly regulated 3.0-3.6 V rail; the ADC accuracy and 2 ns PWM resolution are only specified within this window. Decouple each VDD pin with 100 nF ceramic capacitors placed within 2 mm of the pin, plus one bulk 10 uF capacitor near the device. The exposed pad under the UQFN-48 must be soldered to a solid ground array - it is both the primary ground return and thermal path. Estimated: at 100 MIPS with analog peripherals active, current draw is in the tens-of-mA class, so a 300 mA LDO provides ample margin.
Route shunt-amplifier inputs to the three on-chip op amps as short Kelvin-sense traces directly from the shunt resistor terminals; keep these analog traces away from PWM output lines and gate-driver switching nodes. Place the RC anti-alias filter (e.g., 1 kΩ + 1 nF, estimated corner ~160 kHz) close to the ADC input pins. Star-ground or a single solid ground plane is preferred over partitioned grounds, given the mixed analog/digital pin placement on the UQFN-48.
Verify the ordering suffix before assembly: T = tape & reel, I = -40C to +85C, M4 = UQFN-48 6x6. Mixing up /M4 (UQFN) and /PT (TQFP) devices is a frequent BOM error since both are 48-pin. Also confirm extended-temperature needs early: if ambient exceeds +85C, the I-grade part is out of spec and the E-suffix variant (70 MIPS derate above rated temp per family data sheet) must be used instead - a firmware timing impact, not just a procurement change.
The 100 MHz internal operation plus fast PWM edges (2 ns resolution) produce significant harmonics; keep PWM output stubs short and add series termination (estimated 22-33 Ω) on long gate-driver traces to damp ringing. Configure unused I/O as outputs-low or inputs with pull-downs in firmware to prevent floating-node EMI. Microchip's family reference manual section on high-speed PWM layout is the authoritative guidance for dead-time and edge-placement integrity.
Compliance Information
Compliance status was not explicitly stated in the verified distributor data captured for this MPN. As an active Microchip catalog industrial device it is generally shipped lead-free; verify via Microchip's product page Quality/Environmental Data before compliance documentation.
