DSPIC33CK32MP505-I/PT - 100MHz 16-bit DSC 32KB Flash | Microchip
MPN: DSPIC33CK32MP505-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.05 | $3.05 |
| 10 | $2.85 | $28.50 |
| 100 | $2.55 | $255.00 |
| 500 | $2.3 | $1,150.00 |
| 1,000 | $2.04 | $2,040.00 |
DSPIC33CK32MP505-I/PT Overview
A digital signal controller combines the computational throughput of a DSP with the peripheral integration and deterministic control of a microcontroller. Within the power-management hierarchy, the dsPIC33CK family sits in Microchip's portfolio between general-purpose PIC MCUs and full DSPs, targeting closed-loop control loops such as digital power conversion, motor control, and advanced sensing where both math throughput and precise analog interfacing are required.
Key features of the DSPIC33CK32MP505 include integrated on-chip analog with three operational amplifiers (op-amps) and three comparators, plus a Peripheral Trigger Generator (PTG) for hardware-autonomous task scheduling. The device integrates CAN Flexible Data rate (CAN FD) for automotive and industrial networking, and the family is noted for its High-Resolution PWM (HRPWM) for fine pulse-width control in switch-mode power supplies. The part is positioned by DigiKey as a Functional Safety (FuSa) capable device, supporting safety-oriented designs.
Technical depth: the 100 MHz dsPIC DSC core executes DSP instructions (MAC, DSP multiply-accumulate) with zero-cycle overhead, enabling fast control-loop execution such as current loops in power converters running at hundreds of kilohertz switching frequency. The 8 KB of RAM supports double-buffered control variables and communication buffers. Dual-partition FLASH boot operation is supported, allowing one partition to be used for application code and the other for a bootloader or fail-safe image.
Typical applications include digital power supplies (LLC, totem-pole PFC) leveraging the high-resolution PWM, PMSM/BLDC motor control using the on-chip op-amps for shunt-amplified current sensing, and CAN FD nodes in industrial automation and automotive body systems.
Design consideration: budget the 48-pin TQFP (7x7 mm) thermal and decoupling layout early - place 0.1 uF ceramics at every VDD pin and keep the on-chip op-amp input traces short and away from PWM switching nodes to preserve analog accuracy.
This page synthesizes distributor pricing, drop-in family alternatives, design notes, and application guidance not consolidated in the manufacturer datasheet, with pricing verified as of 2026-09-23.
Drop-in alternatives for DSPIC33CK32MP505-I/PT — 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 DSPIC33CK32MP505-I/PT (same form factor and footprint) — differing in Core, Package, Operating Temperature, PWM, CAN Interface.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK64MP505-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.15 / Unit
View Datasheet →DSPIC33CK128MP505-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK256MP505-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK32MC105-E/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.55 / Unit
View Datasheet →DSPIC33CK32MP505-I/PT Maximum Ratings & Electrical Characteristics
| Core | dsPIC33CK 16-bit DSC core |
| CPU Speed | 100 MHz |
| Program Memory (FLASH) | 32 KB (32K x 8) |
| RAM | 8 KB |
| Supply Voltage | 3.3 V |
| On-chip Op-Amps | 3 |
| On-chip Comparators | 3 |
| CAN Interface | CAN FD (Flexible Data rate) |
| Peripheral Trigger Generator (PTG) | Yes |
| PWM | High-Resolution PWM (family feature) |
| Package | 48-TQFP (7x7 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial, I suffix) |
| Functional Safety | FuSa capable (per DigiKey classification) |
| FLASH Partitioning | Dual-partition boot supported |
DSPIC33CK32MP505-I/PT 48-tqfp (7x7 mm) Pin Configuration Guide
Pin configuration for DSPIC33CK32MP505-I/PT (48-tqfp (7x7 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 DSPIC33CK32MP505-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK32MP505-I/PT is suitable for 6 applications: Digital Power Supplies, PMSM / BLDC Motor Control, CAN FD Industrial Networking Nodes, Advanced Sensing and Signal Conditioning, Functional Safety Oriented Control, High-Intensity Lighting and LED Drivers.
Digital Power Supplies
The DSPIC33CK32MP505-I/PT fits digital power conversion - LLC resonant converters, totem-pole PFC, and DC-DC stages - because its 100 MHz 16-bit core executes the inner current and voltage loops at the switching frequency with deterministic latency, while the family's High-Resolution PWM delivers fine duty-cycle and phase resolution needed for soft-switching topologies. The three on-chip comparators provide cycle-by-cycle overcurrent protection in hardware, independent of software response, which is essential for fault survival in power stages. In a typical topology the DSC reads shunt or sensor feedback through its ADC, executes a PI control law using DSP MAC instructions, and updates the HRPWM registers within one switching period. Unlike fixed-frequency analog controllers, firmware-defined control permits adaptive mode switching and telemetry over CAN FD, adding system-level value. The trade-off is firmware development effort versus the plug-and-play nature of analog controllers.
Recommended
PMSM / BLDC Motor Control
For brushless DC and permanent-magnet synchronous motor drives, the DSPIC33CK32MP505-I/PT integrates the complete signal chain: the three on-chip operational amplifiers amplify low-side shunt-resistor currents directly, eliminating external op-amps and their offset/drift budget, while the three comparators implement hardware overcurrent trip that gates the High-Resolution PWM within microseconds. The 100 MHz core sustains field-oriented control (FOC) math - Clarke/Park transforms and PI current loops - at the typical 10-20 kHz control rate with ample margin for position-observer algorithms. Per Microchip's positioning of the dsPIC33CK family, motor control is a primary target application. The PTG (Peripheral Trigger Generator) schedules ADC sampling synchronized to PWM without CPU intervention, reducing loop jitter. Design consideration: keep shunt-to-op-amp traces short and Kelvin-connected, and use the dual-partition FLASH to hold a bootloader for field firmware updates of drive parameters over CAN FD.
Recommended
CAN FD Industrial Networking Nodes
The integrated CAN Flexible Data-rate module makes the DSPIC33CK32MP505-I/PT a strong node controller for industrial automation networks, where CAN FD raises payloads from 8 to 64 bytes and bitrates beyond the classical 1 Mbit/s CAN limit. The 100 MHz core services the CAN FD FIFOs and application logic concurrently, while the Peripheral Trigger Generator offloads deterministic peripheral sequencing from software, preserving real-time margins for the protocol stack. In factory automation the same chip can run local control loops (motor, power, or sensing) and bridge telemetry onto the plant CAN FD backbone, replacing a two-chip controller-plus-transceiver-controller architecture with one DSC. The 48-pin TQFP exposes sufficient I/O for digital inputs, encoder interfaces, and status outputs. Pair with a CAN FD transceiver (e.g., an MCP2562FD-class part) at the physical layer, and use the dual-partition FLASH for A/B firmware images to enable fail-safe field updates.
Recommended
Advanced Sensing and Signal Conditioning
The DSPIC33CK32MP505-I/PT serves advanced sensing nodes because its analog front-end - three op-amps and three comparators - plus a 100 MHz DSP core can condition, filter, and classify sensor signals on-chip. Typical uses include current and voltage sensing in inverters, resistive bridge conditioning, and fast threshold detection for protection events. The op-amps can be configured with internal gain settings to match shunt or sensor amplitudes, and the DSP instructions accelerate FIR/IIR filtering without floating-point hardware, using fixed-point arithmetic well suited to 16-bit DSC architecture. The PTG triggers ADC conversions synchronized to PWM or external events, giving coherent sampling that reduces aliasing in switched systems. Compared with a discrete amplifier-plus-MCU design, this integration shortens the analog BOM and removes inter-chip noise coupling, though designers must respect the single-supply 3.3 V analog range and keep high-dV/dt PWM traces away from op-amp inputs on the PCB.
Recommended
Functional Safety Oriented Control
DigiKey classifies the DSPIC33CK32MP505-I/PT under Functional Safety (FuSa) capable dsPIC33CK devices, making it a candidate for control systems where safety mechanisms must be demonstrated - industrial drives, power supplies with mandated fault handling, and machinery controllers. The architecture supports safety-relevant techniques: the dual-partition FLASH enables A/B code images with boot-time integrity checks, the on-chip comparators give an independent hardware path for overcurrent or overvoltage trip that does not depend on software correctness, and the windowed watchdog plus clock monitoring peripherals detect CPU lock-up. Microchip provides family-level safety documentation through its FuSa program for the dsPIC33CK line, which designers can leverage during ISO 13849 or IEC 61508 assessments (obtain the current safety manual from Microchip for certified claims). This positions the part between standard MCUs and dedicated safety MCUs for applications with moderate safety integrity requirements, at a $2-3 unit price point.
Recommended
High-Intensity Lighting and LED Drivers
Digital LED drivers benefit from the DSPIC33CK32MP505-I/PT's High-Resolution PWM, whose fine duty and phase resolution enables dimming curves and multi-channel phase-staggered converters without audible-switching artifacts. The 100 MHz core implements average-current-mode or hysteretic control of buck/boost LED stages, while the comparators provide fast-cycle overcurrent protection for the LED string. The three op-amps can amplify current-shunt feedback for constant-current regulation directly, reducing external component count in high-bay, street-lighting, and stage-lighting fixtures. CAN FD integration allows multi-fixture synchronized lighting networks in architectural or theatrical installations, an advantage over purely analog drivers. Thermal design matters: derate drive current using ADC-monitored temperature feedback, and exploit dual-partition FLASH to ship lighting profiles updatable in the field. The 48-pin TQFP provides enough PWM-capable I/O for multi-string fixtures or fan and buck-stage management in one controller.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK32MP505-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK64MP505-I/PT | DSPIC33CK128MP505-I/PT | DSPIC33CK256MP505-I/PT | DSPIC33CK32MC105-E/PT |
|---|---|---|---|---|---|
| Package | 48-TQFP (7x7 mm) | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 100 MHz | 100 MHz | 100 MHz | 100 MHz | 100 MHz |
| FLASH | 32 KB | 64 KB | 128 KB | 256 KB | 32 KB |
| On-chip Op-Amps | 3 | 3 | 3 | 3 | None (external analog required) |
| CAN FD | Yes | Yes | Yes | Yes | Yes |
| Temperature Grade | -40C to +85C (Industrial, I) | -40C to +85C (Industrial, I) | -40C to +85C (Industrial, I) | -40C to +85C (Industrial, I) | Extended (E suffix) |
Key Differentiators
- Integrated analog front-end (vs DSPIC33CK32MC105-E/PT)
- Lowest cost per control loop in the 48-pin TQFP family (vs DSPIC33CK256MP505-I/PT)
- Functional Safety (FuSa) positioning (vs DSPIC33CK32MP502-I/SS)
Design Notes
Decouple every VDD/VDDCORE pin of the DSPIC33CK32MP505-I/PT with 0.1 uF ceramics placed within 2 mm of the pin, plus at least one bulk 4.7-10 uF capacitor near the 48-pin TQFP. Microchip's dsPIC33CK datasheet power section requires proper decoupling of the internal core regulator capacitor pin - do not omit it, as core-rail noise directly degrades ADC accuracy and can cause spurious resets. Use a solid ground plane on layer 2 under the 7x7 mm footprint and connect the exposed paddle area (if your footprint includes thermal vias) to ground for signal-return integrity.
The three on-chip op-amps share the die with the High-Resolution PWM stage, so layout discipline determines analog accuracy. Route op-amp inverting/non-inverting input traces as short Kelvin connections directly to shunt resistors, and keep them away from PWM output traces and the CAN FD differential pair. Do not cross analog inputs over PWM or crystal traces on adjacent layers without a ground shield. Estimated: with typical PWM edge rates, crosstalk of even 10 mV into a shunt sense line can shift current-loop readings by several percent at 10-20 mOhm shunt values - verify with scope probing at the pin, not the shunt.
Three common mistakes with this part: (1) Confusing temperature suffixes - the -I grade is -40C to +85C; do not substitute -E parts silently in a BOM without re-verifying ratings paperwork. (2) Assuming pin compatibility outside the MP505 memory family: DSPIC33CK32MP502 (/SS, 28-pin) and MP205 (/PT, 64-pin) look similar by name but are NOT drop-in. (3) Omitting the Peripheral Pin Select (PPS) configuration - most digital peripherals on dsPIC33CK are routable, and firmware that assumes fixed pinout will not map peripherals. Always configure PPS registers and verify against the datasheet pin-multiplexing tables.
Compliance Information
Standard current-production Microchip catalog part supplied by DigiKey/Mouser/LCSC; formal RoHS/REACH certificate text was not present in the provided web data - obtain from Microchip's environmental compliance portal.