DSPIC33CK32MP205-I/M4 - 100MHz 16-bit DSC 32KB Flash | Microchip
MPN: DSPIC33CK32MP205-I/M4 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.12 | $4.12 |
| 10 | $3.7 | $37.00 |
| 100 | $3.31 | $331.00 |
| 500 | $2.95 | $1,475.00 |
| 1,000 | $2.65 | $2,650.00 |
| 3,000 | $2.39 | $7,170.00 |
DSPIC33CK32MP205-I/M4 Overview
A digital signal controller combines the computational power of a digital signal processor with the peripheral integration and control-loop responsiveness of a microcontroller. Within the power-management hierarchy, the DSC sits at the top of embedded control ICs, executing deterministic, cycle-accurate control loops that general-purpose MCUs cannot achieve at equivalent cost. The dsPIC33CK family is Microchip's single-core 16-bit DSC line, positioned for digital power, motor control, and advanced sensing.
Key features of the DSPIC33CK32MP205 include a modified Harvard architecture core executing up to 100 MIPS, dual-partition Flash with ECC and Live Update for field firmware upgrades, and Memory Built-In Self-Test (MBIST) on data SRAM. The -40C to +150C operating range and 3.0V to 3.6V supply make it suitable for harsh automotive-adjacent and industrial environments.
Technically, the device integrates high-resolution PWM and CAN Flexible Data (CAN FD) on-chip, along with three operational amplifiers that buffer current-sense signals directly into the ADC pipeline, eliminating external op-amps in motor-control and digital-power designs.
Typical applications include digital switched-mode power supplies (SMPS/LLC/totem-pole PFC), brushless DC and PMSM motor drives, and high-endurance sensing and control systems. The CAN FD interface also supports industrial networking nodes.
Design consideration: the 48-UQFN exposed pad must be soldered to a solid ground plane for thermal and signal-integrity performance; the -I suffix indicates the industrial temperature range of -40C to +85C for the qualified device variant.
This page synthesizes distributor pricing, pin-compatible family alternatives, and practical design notes not found in the manufacturer datasheet, with pricing verified as of 2026-09-23.
Drop-in alternatives for DSPIC33CK32MP205-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 DSPIC33CK32MP205-I/M4 (same form factor and footprint) — differing in Operating Temperature, Package, PWM, Data SRAM, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK32MP205-E/M4
✅ Drop-In✓ In Stock
$2.05 / Unit
View Datasheet →DSPIC33CK32MP205-H/M4
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK32MC105-E/M4
✅ Drop-In✓ In Stock
$3.2 / Unit
View Datasheet →DSPIC33CK256MP205-E/M4
✅ Drop-In✓ In Stock
$1.87 / Unit
View Datasheet →DSPIC33CK64MP205-I/M4
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK16MP205-I/M4
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK32MP205-I/M4 Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC DSC, Modified Harvard |
| Maximum Clock Frequency | 100 MHz (100 MIPS) |
| Program Flash Memory | 32 KB |
| Data SRAM | 8 KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (I grade device qualification; family supports up to +150C) |
| Package | 48-pin UQFN (6x6 mm) with exposed pad |
| Mounting Type | Surface Mount |
| On-chip Op-Amps | 3 |
| Analog Comparators | 3 |
| CAN Interface | CAN FD (Flexible Data) |
| PWM | High-Resolution PWM |
| Programmable Trigger Generator | Yes (PTG) |
| Flash Features | ECC, dual-partition Live Update |
| SRAM Feature | Memory Built-In Self-Test (MBIST) |
| RoHS Status | Compliant |
| Packaging | Tray |
DSPIC33CK32MP205-I/M4 48-pin uqfn (6x6 mm) with exposed pad Pin Configuration Guide
Pin configuration for DSPIC33CK32MP205-I/M4 (48-pin uqfn (6x6 mm) with exposed pad 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 DSPIC33CK32MP205-I/M4.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK32MP205-I/M4 is suitable for 6 applications: Digital Switch-Mode Power Supplies, Brushless DC and PMSM Motor Control, Industrial Sensing and Control Nodes, Power Factor Correction Converters, Battery Management and Charging Systems, Embedded DSP and Signal Processing.
Digital Switch-Mode Power Supplies
The DSPIC33CK32MP205 is a natural fit for digitally controlled SMPS topologies including LLC resonant converters, phase-shifted full bridges, and totem-pole PFC stages. Its high-resolution PWM provides fine duty-cycle granularity that eliminates limit-cycle oscillation in tight voltage-regulation loops, while the 100 MHz core executes compensator math every switching cycle with deterministic latency. The three on-chip comparators implement cycle-by-cycle overcurrent protection with sub-microsecond response, independent of CPU load. In a typical 100 kHz LLC design, the DSC replaces analog control chips while adding adaptive dead-time control, soft-start sequencing, and CAN FD telemetry. The main trade-off versus a fixed-function PWM controller is firmware development effort, offset by a single bill-of-materials part across multiple product power levels.
Recommended
Brushless DC and PMSM Motor Control
Field-oriented control (FOC) of BLDC and PMSM motors is a flagship application for the dsPIC33CK family. The DSPIC33CK32MP205's DSP engine executes Clarke/Park transforms and PI current loops at PWM switching frequencies of 20-100 kHz with cycle-accurate sampling synchronized by the high-resolution PWM module. The three integrated op-amps amplify low-side shunt current signals directly into the ADC inputs, eliminating three external op-amp packages and their offset/matching errors, while the three analog comparators provide hardware overcurrent trip without software intervention. Motor start-up algorithms, speed ramps, and fault handling fit comfortably in 32 KB Flash. For multi-motor systems or those needing larger lookup tables, the pin-compatible DSPIC33CK256MP205 provides 256 KB without board redesign.
Recommended
Industrial Sensing and Control Nodes
Factory automation nodes benefit from the DSPIC33CK32MP205's combination of analog integration, CAN FD networking, and DSP filtering capability. Sensor signals such as pressure bridges or thermocouple front-ends can be buffered by the on-chip op-amps and digitally filtered using the DSP MAC instructions, achieving effective resolution gains without external signal-conditioning ICs. The CAN FD interface supports 64-byte payloads and higher data-phase bit rates than classical CAN, enabling rich diagnostics reporting on industrial networks. The Programmable Trigger Generator (PTG) autonomously sequences ADC sampling and PWM updates offload from the CPU, freeing MIPS for protocol handling. Operation from 3.0V to 3.6V simplifies integration with standard 3.3V industrial logic while the 100 MIPS core keeps control loop deadlines.
Recommended
Power Factor Correction Converters
Totem-pole and boost PFC stages demand precise, phase-related PWM pairs and fast current-loop response, both native strengths of the DSPIC33CK32MP205. The high-resolution PWM generates complementary outputs with programmable dead time at sub-nanosecond adjustment granularity, critical for managing body-diode conduction losses in GaN and SiC based totem-pole topologies. The 100 MHz core closes average-current-mode loops each switching cycle, holding input current distortion low across load transients. The comparators feed cycle-by-cycle current limiting for inrush and fault conditions. With 32 KB Flash, both PFC control and system supervision (brownout handling, soft-start, CAN FD status reporting) coexist in a single DSC. The -40C to +85C industrial qualification supports deployment in outdoor and factory-floor power infrastructure.
Recommended
Battery Management and Charging Systems
Smart battery chargers and BMS front-ends use the DSPIC33CK32MP205 to run charging state machines, coulomb counting, and safety supervision in one controller. The on-chip op-amps buffer current-shunt and cell-voltage dividers into the ADC, the comparators enforce hardware overcurrent and overvoltage thresholds, and the DSP engine applies digital filtering to noisy battery sensing signals. The CAN FD port integrates the pack directly into vehicle or industrial energy-storage networks, a key advantage over analog charger ICs. With 32 KB Flash, multi-chemistry charge profiles (Li-ion, LiFePO4, lead-acid) can be stored and selected at runtime. Live Update dual-partition Flash allows charging-firmware field updates without bricking a deployed pack, an important serviceability feature for fleet equipment.
Recommended
Embedded DSP and Signal Processing
Beyond power conversion, the DSPIC33CK32MP205 serves as a low-cost embedded DSP for filtering, tone generation, and sensor-fusion tasks. The modified Harvard architecture with hardware MAC instructions executes FIR/IIR filters and FFT kernels efficiently at up to 100 MIPS, while the PTG offloads deterministic trigger sequences from software. Audio-band and instrumentation filtering, vibration signature analysis, and ultrasonic sensor processing fit within the 8 KB SRAM and 32 KB Flash budget. Unlike a standalone DSP, the device integrates the analog front end (op-amps, comparators, ADC) and CAN FD connectivity, collapsing a multi-chip signal chain into one 48-UQFN part. Development uses the standard MPLAB X IDE with XC16 and the free DSP library, avoiding separate DSP toolchain investment.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK32MP205-I/M4 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK32MP205-E/M4 | DSPIC33CK32MP205-H/M4 | DSPIC33CK32MC105-E/M4 | DSPIC33CK256MP205-E/M4 | DSPIC33CK64MP205-I/M4 |
|---|---|---|---|---|---|---|
| Package | 48-UQFN (6x6 mm) | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 32 KB | 32 KB | 32 KB | 32 KB | 256 KB | 64 KB |
| Data SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 24 KB (family max) | 8 KB |
| Maximum Core Speed | 100 MHz (100 MIPS) | 100 MHz | 64 MHz | 100 MHz | 100 MHz | 100 MHz |
| On-chip Op-Amps | 3 | 3 | 3 | None (MC variant) | 3 | 3 |
| CAN FD | Yes | Yes | Yes | Yes | Yes | Yes |
| High-Resolution PWM | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Three integrated op-amps for current sensing (vs DSPIC33CK32MC105-E/M4)
- Full 100 MHz core speed (vs DSPIC33CK32MP205-H/M4)
- Cost-optimized 32 KB memory point (vs DSPIC33CK256MP205-E/M4)
Design Notes
The 48-UQFN exposed pad (die paddle) must be soldered to a contiguous ground pour for both thermal dissipation and signal-integrity reasons; do not leave it as a thermal-relief-only connection. Place a 0.1 uF ceramic decoupling capacitor within 2 mm of each VDD pin pair, plus one bulk 4.7-10 uF capacitor near the supply entry. Route the high-resolution PWM outputs (which drive gate transformers or drivers) as short, matched-length pairs to minimize skew in complementary outputs used for half-bridge dead-time control.
Supply is 3.0V to 3.6V only - the device is not 5V tolerant as a 5V part; use level shifters on any 5V-signaled interface. Estimated: at 100 MIPS the core current is on the order of tens of mA per the family datasheet current-consumption tables; budget the local LDO or DC-DC accordingly and add margin for ADC and PWM simultaneous operation, which raises peak current. If the board also powers GaN/SiC gate drivers from the same rail, isolate DSC supply with an LC filter to prevent switching ripple from corrupting ADC reference accuracy.
ICSP programming requires PGECx and PGEDx pins used strictly as a matched pair - mixing PGEC1 with PGED2 will fail device programming (per Northern Software dsPIC33CK32MP205 notes). Plan the programming header on one pair and reserve it in your schematic. Also, when migrating firmware to the pin-compatible 256 KB variant, verify Flash sector sizes in the linker script; erase-page geometry differs across family densities and a naive port can corrupt Live Update partitioning.
Estimated: family datasheet qualified operation extends to +150C ambient for E-grade variants. For the -I grade part in an enclosed drive, compute junction temperature as Tj = Ta + (theta_JA x Pd); obtain theta_JA for the 48-UQFN from the packaging section of the manufacturer datasheet rather than assuming, since UQFN values depend strongly on the exposed-pad copper area. A solid 2-oz ground pour under the paddle typically improves effective thermal resistance substantially versus minimum-footprint layout.
Compliance Information
RoHS compliant per distributor listings (DigiKey/Mouser). REACH, halogen-free, and conflict-minerals declarations should be obtained from Microchip's product compliance portal for the specific part number.
