DSPIC33CK256MP306T-I/PT - 100MHz DSC, 256KB Flash | Microchip
MPN: DSPIC33CK256MP306T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.15 | $2.15 |
| 10 | $1.95 | $19.50 |
| 100 | $1.8 | $180.00 |
| 500 | $1.68 | $840.00 |
| 1,000 | $1.55 | $1,550.00 |
DSPIC33CK256MP306T-I/PT Overview
A digital signal controller combines the compute characteristics of a digital signal processor with the control peripherals and ease of use of a microcontroller. In the power-management hierarchy, the DSC sits between general-purpose MCUs and dedicated DSPs, making the dsPIC33CK family a common choice for real-time closed-loop control where fast math and precise analog timing must coexist on one chip.
Key features include 53 general-purpose I/O pins, a 20-channel 12-bit SAR ADC, six 12-bit DACs, on-chip operational amplifiers, high-resolution PWM, and 8 DMA channels for offloading data movement. The dual-panel flash enables live firmware updates, and the operating voltage range of 3V to 3.6V suits standard 3.3V rails.
Architecturally, the dsPIC33CK core executes most instructions in a single cycle with DSP multiply-accumulate support, a barrel shifter, and boundary scan. The differential ADC and programmable gain op-amps directly sample and condition current-shunt signals, which shortens the analog front end in power-conversion designs.
Typical applications include precision motor control (FOC for PMSM/BLDC), digital power supplies and PFC stages, solar inverters, and battery chargers, where 100 MIPS headroom and cycle-accurate PWM are decisive.
Design consideration: keep VDD within 3.0-3.6V and provide solid decoupling on all VDD/VSS pin pairs; the -40C to +85C industrial rating of the I-grade device must be respected in thermal budgets near full-speed operation.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33CK256MP306T-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 DSPIC33CK256MP306T-I/PT (same form factor and footprint) — differing in Core, Package, Operating Temperature, CAN, Operating Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK256MP606T-I/PT
✅ Drop-In✓ In Stock
$3.55 / Unit
View Datasheet →DSPIC33CK256MP306T-E/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK256MP306T-H/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK256MP506T-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK256MP205-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.55 / Unit
View Datasheet →DSPIC33CK256MP306T-I/PT Maximum Ratings & Electrical Characteristics
| Core | dsPIC33CK 16-bit DSC, single core |
| Maximum Speed | 100 MHz (100 MIPS) |
| Flash Program Memory | 256 KB (dual panel) |
| RAM | 64 KB |
| Operating Voltage | 3 V to 3.6 V |
| General-Purpose I/O | 53 pins |
| ADC | 20-channel, 12-bit SAR |
| DAC | 6-channel, 12-bit |
| DMA Channels | 8 |
| Integrated Peripherals | OpAmps, 12-bit ADCs, PWM |
| CAN | No CAN (MP3xx variant) |
| Operating Temperature | -40C to +85C |
| Package | TQFP-64 (10x10 mm) |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (T suffix) |
| RoHS Status | Compliant |
DSPIC33CK256MP306T-I/PT tqfp-64 (10x10 mm) Pin Configuration Guide
Pin configuration for DSPIC33CK256MP306T-I/PT (tqfp-64 (10x10 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 DSPIC33CK256MP306T-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK256MP306T-I/PT is suitable for 6 applications: Precision Motor Control (FOC for PMSM/BLDC), Digital Power Supplies and PFC, Solar Inverters and Renewable Energy Conversion, Battery Chargers and BMS, Industrial Sensing and Condition Monitoring, Embedded Signal Processing and Audio Front Ends.
Precision Motor Control (FOC for PMSM/BLDC)
The DSPIC33CK256MP306T-I/PT is purpose-built for field-oriented control of permanent-magnet and brushless DC motors. Its 100 MHz dsPIC33CK core executes the Clarke/Park transforms and PI current loops of FOC within single-digit microsecond cycles at PWM frequencies of 20-100 kHz. The 12-bit ADC with up to 20 channels simultaneously samples phase currents and the DC bus, while integrated op-amps provide programmable gain directly from shunt resistors, eliminating external amplifiers. High-resolution PWM with hardware dead-time insertion drives three-phase inverter bridges, and 8 DMA channels stream ADC results without CPU intervention. The 256KB dual-panel flash leaves ample room for position observer algorithms such as sensorless sliding-mode or flux observers.
Recommended
Digital Power Supplies and PFC
In switched-mode power supplies, boost PFC stages, and LLC converters, this DSC provides cycle-accurate control that analog controllers cannot match for programmability. The 100 MIPS core closes voltage and current loops at switching frequencies up to several hundred kHz, and the 12-bit ADC is triggered synchronously to the PWM center to sample mid-ramp currents free of switching noise. Six 12-bit DACs can supply analog references or feedback comparators, and the on-chip op-amps condition shunt or hall sensor signals. The 256KB flash accommodates multiple soft-start profiles, hot-swap logic, and digital compensation networks, while I2C/SMBus peripherals enable PMBus-style telemetry to a host controller.
Recommended
Solar Inverters and Renewable Energy Conversion
Grid-tied solar micro-inverters and string optimizers require simultaneous MPPT, DC-DC conversion, and grid-synchronization control - a workload matched to the DSPIC33CK256MP306T-I/PT. The 100 MHz core runs incremental-conductance MPPT plus current-control loops concurrently; the multi-channel 12-bit ADC samples PV voltage/current and grid waveforms, and the 53 GPIO provide ample relay, contactor, and protection signaling. The 8-channel DMA keeps sampling deterministic under interrupt load, and the 256KB flash stores anti-islanding firmware, certification routines, and OTA update code enabled by dual-panel flash. The -40C to +85C industrial range matches outdoor combiner-box and optimizer environments.
Recommended
Battery Chargers and BMS
Multi-chemistry battery chargers benefit from the controller's combination of precise analog sensing and flexible control. The 20-channel 12-bit SAR ADC tracks cell voltages and pack current at millivolt/milliamp resolution, the on-chip op-amps amplify shunt signals with programmable gain, and the 12-bit DACs generate charge-profile references. Charging CC/CV/taper stages are implemented in firmware on the 100 MHz core with 256KB of flash available for charge algorithms, safety state machines, and data logging into 64KB RAM. The dual-panel flash supports secure field firmware updates to adapt charge profiles to new cell chemistries without reprogramming fixtures on the production line.
Recommended
Industrial Sensing and Condition Monitoring
The DSPIC33CK256MP306T-I/PT serves as a smart sensor hub for vibration, current, and process monitoring in Industry 4.0 retrofits. Its 12-bit ADC samples accelerometer or current-transducer outputs at high rates, the DSP core applies FFT and digital filtering in real time, and on-chip op-amps reduce bill-of-material count in the analog front end. With 256KB flash, edge analytics and anomaly-detection features run locally, and the 53 GPIO drive alarms, relays, and local indicators. UART/SPI/I2C links and an optional external CAN FD transceiver over pin-muxed ports pass summarized results to PLCs or gateways, reducing continuous network traffic versus raw streaming.
Recommended
Embedded Signal Processing and Audio Front Ends
For embedded DSP tasks - active noise cancellation, sensor signal conditioning, or communications modems - the 100 MHz core with hardware MAC and barrel shifter executes FIR/IIR filters efficiently, while the six 12-bit DACs provide output channels and the 20-channel 12-bit ADC captures inputs. The 64KB RAM buffers several blocks of sample data for overlap-add processing, and 8 DMA channels move sample streams between peripherals and memory with deterministic latency. The 256KB flash retains filter coefficients, protocol stacks, and calibration tables, and the 3.0-3.6V supply integrates directly into standard 3.3V mixed-signal boards using the 10x10 mm TQFP footprint.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK256MP306T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK256MP606T-I/PT | DSPIC33CK256MP306T-E/PT | DSPIC33CK256MP306T-H/PT | DSPIC33CK256MP506T-I/PT | DSPIC33CK256MP205-I/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-64 (10x10) | TQFP-64 (10x10) - same | TQFP-64 (10x10) - same | PQFP-64 (10x10) - same footprint | TQFP-64 (10x10) - same | TQFP-64 (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) | 100 MHz family | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 128 KB |
| RAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| CAN Module | No | Yes (CAN FD) | No | No | Yes (CAN FD) | No |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +125C | Automotive/extended grade | -40C to +85C | -40C to +85C |
Key Differentiators
- No CAN die cost - lowest price in the 64-pin 256KB family (vs DSPIC33CK256MP606T-I/PT)
- Maximum flash in the same footprint (vs DSPIC33CK256MP205-I/PT)
- Extended-temperature upgrade path (vs DSPIC33CK256MP306T-E/PT)
Design Notes
Supply the dsPIC33CK core from a clean 3.0-3.6V rail. Place 0.1uF ceramic decoupling capacitors at every VDD/VSS pin pair, plus at least one 10uF bulk capacitor per board. Because the ADC and core share the supply, isolate noisy loads (LEDs, relays) onto separate rails; reference the ADC to a dedicated, quiet AVDD plane when sampling differential shunt signals at high rates to preserve 12-bit accuracy.
The TQFP-64 has 0.5 mm lead pitch; use 4-mil trace/space capability and keep high-current PWM traces (motor phases, gate-drive outputs) on a dedicated layer with solid ground return underneath. Route analog sense traces (shunt, ADC inputs) away from PWM and clock lines, and guard them with ground pours. Provide an unbroken ground plane beneath the 10x10 mm package; avoid splitting the plane under the crystal and ADC region.
Verify the device selection before building: MP306 has NO CAN module - designs needing CAN FD must use the MP506/MP606 variants, which are pin-compatible on this footprint. Configure Peripheral Pin Select (PPS) carefully - incorrect remapping is the most common bring-up failure on dsPIC33CK. Finally, respect the -40C to +85C limit of the I-grade; for automotive or enclosed high-ambient environments specify the E-grade DSPIC33CK256MP306T-E/PT instead.
Compliance Information
RoHS compliance confirmed per JLCPCB and LCSC listings. AEC-Q100 qualification status not stated in provided data for this I-grade part.
