DSPIC33CK512MP305-I/PT - 16-bit 100MIPS DSC 512KB Flash | Microchip
MPN: DSPIC33CK512MP305-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.92 | $6.92 |
| 10 | $6.24 | $62.40 |
| 100 | $5.42 | $542.00 |
| 500 | $4.87 | $2,435.00 |
| 1,000 | $4.36 | $4,360.00 |
DSPIC33CK512MP305-I/PT Overview
A digital signal controller combines the computational capability of a digital signal processor with the peripheral integration and ease of use of a microcontroller. Within the power-management hierarchy of embedded systems, a DSC sits between a general-purpose MCU and a dedicated DSP: it executes fixed-point DSP instructions for control-loop math while integrating motor-control peripherals such as high-resolution PWM, fast 12-bit ADCs, and operational amplifiers on the same silicon.
Key features include a 100 MHz (100 MIPS) single-core dsPIC CPU with DSP instruction extensions, 512 KB of ECC-protected dual-panel Flash enabling live updates, 64 KB of RAM with 8-channel Direct Memory Access (DMA), and integrated analog: multiple 12-bit ADCs with high sample rates, comparators, and on-chip operational amplifiers that can close current-loop feedback without external op-amps.
The dsPIC33CK family architecture adds a hardware barrel shifter, dual 40-bit accumulators, and modulo and bit-reversed addressing for efficient FIR/IIR filtering and fast Fourier transforms. Dedicated motor-control peripherals, including complementary-output high-resolution PWM with dead-time insertion, make closed-loop field-oriented control (FOC) practical at switching frequencies well above 100 kHz. Communication coverage spans UART, SPI, I2C, and CAN Flexible Data-Rate (CAN FD), which the family datasheet identifies as a headline feature.
Typical applications are precision brushless DC and PMSM motor control for industrial drives and drones, digital power conversion such as totem-pole PFC and LLC power supplies, and automotive-adjacent subsystems where CAN FD connectivity and functional-safety-oriented design practices are required.
Design considerations: the device operates from a 3.0 V to 3.6 V supply, so provide a clean 3.3 V rail, decouple every VDD pin, and place the VCAP capacitor per the datasheet layout guidance. Flash live updates require careful dual-panel partition planning at design time.
This page synthesizes distributor pricing, drop-in same-family alternatives, pinout guidance, and practical design notes not consolidated in the manufacturer datasheet, so engineers can evaluate supply-chain and second-source options in one place.
Drop-in alternatives for DSPIC33CK512MP305-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 DSPIC33CK512MP305-I/PT (same form factor and footprint) — differing in Package, Operating Temperature, CAN Interface, Data SRAM, On-chip Op-Amps.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK512MP605-I/PT
✅ Drop-In✓ In Stock
$1 / Unit
View Datasheet →DSPIC33CK256MP205-I/PT
✅ Drop-In✓ In Stock
$3.55 / Unit
View Datasheet →DSPIC33CK256MP205-E/PT
✅ Drop-In✓ In Stock
$3.92 / Unit
View Datasheet →DSPIC33CK512MP305-E/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK128MP506-E/MR
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$4.42 / Unit
View Datasheet →DSPIC33CK512MP305-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33CK DSC (fixed-point DSP) |
| Maximum CPU Speed | 100 MIPS (100 MHz) |
| Program Memory (Flash) | 512 KB (dual-panel, ECC) |
| RAM | 64 KB |
| DMA Channels | 8 |
| Supply Voltage Range | 3 V to 3.6 V |
| Operating Temperature | -40C to +125C |
| ADC Resolution | 12-bit |
| ADC Type | Multiple high-speed 12-bit ADCs (SAR) |
| Package | 48-TQFP (7x7 mm) |
| Mounting Type | Surface Mount |
| PWM | High-Resolution PWM (motor control) |
| CAN Interface | CAN FD (Flexible Data-Rate) |
| Serial Interfaces | UART, SPI, I2C |
| On-chip Op-Amps | Yes |
| Technology | CMOS |
| RoHS Status | Compliant |
| Qualification Suffix | I = Industrial temperature (-40C to +85C per suffix convention), PT = TQFP tray |
DSPIC33CK512MP305-I/PT 48-tqfp (7x7 mm) Pin Configuration Guide
Pin configuration for DSPIC33CK512MP305-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 DSPIC33CK512MP305-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK512MP305-I/PT is suitable for 6 applications: Precision Motor Control (FOC for BLDC/PMSM), Digital Power Conversion (PFC / LLC), CAN FD Industrial Networking Nodes, Drone and UAV Flight Peripherals, Sensor Signal Processing and DAQ, Test and Measurement Instrumentation.
Precision Motor Control (FOC for BLDC/PMSM)
The DSPIC33CK512MP305-I/PT is purpose-built for field-oriented control of brushless DC and permanent-magnet synchronous motors. Its 100 MIPS DSP core with dual 40-bit accumulators executes the Clarke/Park transforms and PI current-loop math in a few microseconds, enabling PWM switching frequencies above 100 kHz with single-shunt or three-shunt current sensing. The on-chip operational amplifiers amplify shunt signals internally, and the multiple high-speed 12-bit ADCs sample phase currents synchronized to the PWM center, reducing quantization and latency. High-resolution PWM with hardware dead-time insertion protects the inverter bridge. Typical uses include industrial servo drives, drone ESCs, pumps, and fans, where the 512 KB Flash holds FOC firmware plus position-sensor algorithms such as encoder, resolver, or sensorless observer-based control.
Recommended
Digital Power Conversion (PFC / LLC)
In digital power supplies, the DSPIC33CK512MP305-I/PT implements average-current-mode totem-pole PFC and LLC half-bridge control on a single chip. The 100 MIPS core sustains control loops at 100-500 kHz switching frequencies because the high-resolution PWM provides sub-nanosecond duty-cycle resolution, preventing limit-cycle oscillation at high conversion ratios. The 12-bit ADCs sample input/output voltage and inductor current with programmable triggers synchronized to PWM events, and the 8 DMA channels stream sampled data to RAM without CPU intervention. The 512 KB dual-panel Flash stores multiple firmware profiles (e.g., 115 VAC and 230 VAC modes) with live-update capability for in-field efficiency tuning. Design trade-off: budget CPU cycles so both PFC and LLC loops plus housekeeping fit within the PWM interrupt period.
Recommended
CAN FD Industrial Networking Nodes
The integrated CAN Flexible Data-Rate module makes the DSPIC33CK512MP305-I/PT a strong fit for industrial network nodes such as motor-drive slaves, sensor concentrators, and building-automation controllers. CAN FD supports payloads up to 64 bytes at arbitration and data phases faster than classical CAN's 1 Mbps, so the node can stream telemetry (currents, temperatures, rotor position) without saturating the bus. The 100 MIPS core runs the application and protocol stack concurrently, while the 8 DMA channels move CAN frames to RAM with minimal CPU load. The 64 KB RAM buffers multiple transmit queues and diagnostic logs. Pair the controller with a CAN FD transceiver and proper common-mode choke layout for EMC compliance in industrial environments.
Recommended
Drone and UAV Flight Peripherals
UAV electronic speed controllers and flight-controller coprocessors benefit from the DSPIC33CK512MP305-I/PT's combination of high control-loop bandwidth and light weight in system terms: one 48-TQFP device replaces separate MCU, op-amps, and ADC front ends. In a quadcopter ESC, the 100 MIPS core runs sensorless FOC at 20-40 kHz electrical frequency, the on-chip op-amps condition shunt voltages, and the 12-bit ADCs capture current and bus voltage synchronized to PWM. The 512 KB Flash retains multiple flight-mode profiles and failsafe code, and the wide -40C to +125C operating range survives near power stages. High-resolution PWM reduces current ripple and acoustic noise, a measurable advantage for cinematic and inspection drones where efficiency directly extends flight time.
Recommended
Sensor Signal Processing and DAQ
For industrial data acquisition and sensor front ends, the DSPIC33CK512MP305-I/PT integrates the complete chain: on-chip op-amps for gain and filtering, multiple 12-bit SAR ADCs for simultaneous multi-channel sampling, DMA for autonomous data streaming, and 512 KB Flash plus 64 KB RAM for FIR/IIR filtering and FFT-based feature extraction using the DSP MAC instructions. This suits vibration monitoring nodes, current/voltage quality meters, and load-cell conditioning. The DSP core's modulo and bit-reversed addressing accelerate block-based signal processing without an external DSP. Ethernet-class throughput is unnecessary here; the CAN FD or UART interfaces forward processed results upstream. Analog design note: keep AVDD filtered and route analog traces away from PWM nets to preserve the ADC's effective resolution.
Recommended
Test and Measurement Instrumentation
Bench instruments, power analyzers, and programmable loads exploit the DSPIC33CK512MP305-I/PT's deterministic 100 MIPS core for timing-critical trigger generation and measurement sequencing. The high-resolution PWM synthesizes stimulus waveforms with fine duty resolution, the simultaneous 12-bit ADCs capture multi-channel responses with known phase alignment, and the DSP instruction set computes RMS, THD, and FFT spectra in-line. The 512 KB dual-panel Flash supports feature-upgradable firmware in the field - an important lifecycle requirement for instruments with long service lives. USB-to-UART bridges or UART links to a host processor handle user interface traffic. Compared with a general-purpose MCU, the DSC's hardware MAC and dual accumulators cut DSP computation cycles substantially, freeing CPU margin for housekeeping and communications.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK512MP305-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK512MP605-I/PT | DSPIC33CK256MP205-I/PT | DSPIC33CK256MP205-E/PT | DSPIC33CK512MP305-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 |
| Flash Program Memory | 512 KB (dual-panel) | 512 KB | 256 KB | 256 KB | 512 KB |
| CPU Speed | 100 MIPS | 100 MIPS | 100 MIPS | 100 MIPS | 100 MIPS |
| RAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| Operating Temperature | -40C to +85C (I suffix) | -40C to +85C (I suffix) | -40C to +85C (I suffix) | -40C to +125C (E suffix) | -40C to +125C (E suffix) |
| CAN FD | Yes | Yes | Yes | Yes | Yes |
| Supply Voltage | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V |
| Relative Cost | Baseline | Comparable | Lower (half the Flash) | Lower Flash cost, extended temp premium | Premium (extended temp grade) |
Key Differentiators
- Maximum Flash headroom in the 48-pin CK family (vs DSPIC33CK256MP205-I/PT)
- Extended temperature option within the same footprint (vs DSPIC33CK512MP305-E/PT)
- Peripheral-set choice at identical memory size (vs DSPIC33CK512MP605-I/PT)
- Balanced entry point for cost-sensitive designs (vs DSPIC33CK128MP506-E/MR)
Design Notes
The DSPIC33CK512MP305-I/PT requires a 3.0 V to 3.6 V supply (3.3 V nominal) and includes an internal core regulator whose dedicated VCAP pin must have the exact datasheet-specified capacitor - substituting a different value or type can cause core-supply instability during Flash erase/write operations. Decouple every VDD pin with 100 nF ceramics placed within 2 mm of the pins, add bulk capacitance near the controller, and filter AVDD with an RC or ferrite when the on-chip ADCs sample current shunts. Simultaneous Flash programming in the other panel increases momentary supply current; size the regulator for the worst-case read-while-write condition.
Route PGECx/PGEDx programming pairs as matched, short pairs with series resistors (typically 100 ohm) and a header on every production board - the datasheet requires ICSPCLK and ICSPDAT from the same pair, and mixed-pair wiring is the most common field-programming failure. Keep PWM output traces away from AVDD, VCAP, and analog sensor inputs to protect ADC effective number of bits. The TQFP thermal pad is not exposed, so heat exits through the leads; give the part at least a modest 2 oz copper pour when driving gate drivers hard in digital-power designs.
Two frequent integration mistakes: (1) treating the 'I' industrial suffix as -40C to +125C - use the 'E' suffix part (DSPIC33CK512MP305-E/PT) when the ambient near the power stage exceeds +85C; (2) underestimating Flash partitioning - dual-panel live updates require reserving panel space at design time and cannot be retrofitted once the 512 KB map is committed. Also verify oscillator start-up: designs relying on the internal FRC plus PLL should validate actual MIPS after PLL lock, since some distributor summaries cite 64 MHz FRC figures that differ from the 100 MHz PLL-driven maximum.
For motor-control ADC sampling, trigger conversions from the PWM peripheral at the counter center or zero rather than free-running, so phase-current samples are taken with minimal ripple - this measurably improves current-loop accuracy and reduces torque ripple. Use the on-chip op-amps in the datasheet-recommended gain configuration and keep shunt resistor Kelvin connections directly to the op-amp inputs. When CAN FD runs above classical bit rates, keep the transceiver as close to the CCTX/CCRX pins as possible and observe the transceiver's required supply sequencing relative to the controller I/O.
Compliance Information
Current-production Microchip parts in this family are RoHS-compliant and lead-free per distributor listings; REACH, halogen-free and conflict-minerals status should be confirmed from the Microchip product page certificate of conformance for the exact date code.
