DSPIC33CK256MP308-E/PT - 100MIPS DSC, 256KB Flash | Microchip
MPN: DSPIC33CK256MP308-E/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.9 | $6.90 |
| 10 | $6.35 | $63.50 |
| 100 | $5.6 | $560.00 |
| 500 | $5.05 | $2,525.00 |
| 1,000 | $4.55 | $4,550.00 |
DSPIC33CK256MP308-E/PT Overview
A digital signal controller combines the computational throughput of a digital signal processor with the peripheral integration and control-oriented architecture of a microcontroller. In the power-management hierarchy, DSCs occupy the space between general-purpose MCUs and dedicated DSP chips, offering deterministic single-cycle MAC and DSP instructions alongside timers, PWM modules and high-speed converters. The dsPIC33CK family from Microchip is the single-core evolution of the dsPIC33 product line, targeted at closed-loop control systems.
Key features include dual-panel flash enabling live firmware updates while running code, up to three on-chip op-amps for current-sense signal conditioning, 12-bit ADCs supporting simultaneous multi-channel sampling at rates suited to high-frequency switch-mode power conversion, and advanced high-resolution PWM peripherals. The device also provides 8 DMA channels and a barrel shifter for efficient data movement and bit manipulation.
Architecturally, the dsPIC33CK core uses an enhanced 16-bit pipeline with DSP multiply-accumulate, modulo and bit-reversed addressing, and hardware division. The dual-panel flash architecture eliminates the classic erase-then-jump bootloader penalty, supporting firmware field updates in industrial equipment with minimal downtime.
Typical applications include high-performance precision motor control (FOC for PMSM and BLDC), digital power supplies and PFC stages, automotive subsystems, and industrial automation requiring deterministic control-loop execution at tens of kHz bandwidth.
Design consideration: the 100 MHz core requires careful power-supply decoupling on all VDD/VDDCORE pins and attention to the internal regulator settings; use Microchip's layout guidance for the TQFP-80 thermal pad pattern.
This page synthesizes distributor pricing, drop-in same-package family alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33CK256MP308-E/PT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK256MP308-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK256MP508-E/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK128MP308-E/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK256MP308-H/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK256MP308-E/PT Maximum Ratings & Electrical Characteristics
| Core | dsPIC33CK, 16-bit single core |
| Core Speed | 100 MHz (100 MIPS) |
| Program Memory | 256 KB Flash (dual panel) |
| RAM | 64 KB |
| DMA Channels | 8 |
| ADC Resolution | 12-bit |
| Integrated Op-Amps | Yes (up to 3) |
| PWM Peripherals | High-resolution PWM |
| Package | 80-TQFP (12x12 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C (E grade) |
| Barrel Shifter | Yes |
| Boundary Scan | Yes |
| Functional Safety | FuSa qualified variant family |
| RoHS Status | Compliant |
| Terminal Form | Gull wing |
| Number of Terminals | 80 |
DSPIC33CK256MP308-E/PT 80-tqfp (12x12 mm) Pin Configuration Guide
Pin configuration for DSPIC33CK256MP308-E/PT (80-tqfp (12x12 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 DSPIC33CK256MP308-E/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK256MP308-E/PT is suitable for 6 applications: Precision Motor Control (FOC for PMSM/BLDC), Digital Power Conversion and PFC, Automotive and Functional-Safety Subsystems, Industrial Automation and Robotics, Renewable Energy Inverters and Microinverters, Wireless and IoT Sensor Hubs.
Precision Motor Control (FOC for PMSM/BLDC)
The DSPIC33CK256MP308-E/PT is purpose-built for field-oriented control of permanent-magnet synchronous and brushless DC motors. Its 100 MIPS core executes the Park/Clarke transforms, PI current loops and speed observers at switching frequencies of 20-100 kHz with deterministic timing, while high-resolution PWM provides fine duty-cycle resolution for low current ripple. The integrated op-amps amplify shunt or in-line phase-current signals directly into the 12-bit ADCs, cutting propagation delay between sensing and actuation - critical for stable high-bandwidth current loops. On-chip DMA offloads ADC result movement so the CPU budget stays focused on the control algorithm.
Recommended
Digital Power Conversion and PFC
In switch-mode power supplies, totem-pole PFC stages and LLC converters, the DSPIC33CK256MP308-E/PT closes voltage and current loops at control bandwidths above 10 kHz using its 100 MHz core and high-resolution PWM with nanosecond-class duty-cycle steps. The 12-bit ADCs sample input/output voltage and inductor current synchronously with the PWM period, and the 8-channel DMA streams results without CPU intervention. Dead-time resolution and programmable PWM fault/shutdown paths support safe-limit operation during transients. The dual-panel flash allows firmware field updates of the power-conversion algorithm in deployed equipment without stopping the converter.
Recommended
Automotive and Functional-Safety Subsystems
The dsPIC33CK family includes Functional Safety (FuSa) qualified variants, and the E-grade temperature rating of -40C to +125C aligns with under-hood and near-power-electronics placement in automotive systems. Typical roles include auxiliary pump/compressor control, DC-DC converter control in 12V/48V zonal architectures, and sensor-fusion preprocessing. The 256KB dual-panel flash supports safe firmware updates with a golden-image fallback panel, a common ASIL-oriented pattern. The barrel shifter and single-cycle MAC accelerate diagnostic filters and CRC-style integrity calculations demanded by safety monitoring tasks running alongside the main control loop.
Recommended
Industrial Automation and Robotics
In factory automation, servo drives, multi-axis robots and CNC subsystems, the DSPIC33CK256MP308-E/PT provides the deterministic execution needed for synchronized position/current loops across multiple axes. The 80-pin TQFP offers sufficient PWM, encoder and QEI-related I/O for dual-axis designs on one controller, while the 100 MIPS core handles trajectory interpolation and communication protocol stacks simultaneously. Its 64KB RAM buffers motion profiles and network frames, and the DSP instructions accelerate filtering of encoder feedback. Extended temperature qualification supports cabinet-less and thermally stressed installations on machinery close to drives and motors.
Recommended
Renewable Energy Inverters and Microinverters
Solar microinverters, string inverters and MPPT stages benefit from the controller's combination of high-resolution PWM for the power stage and 100 MIPS of headroom for maximum-power-point-tracking algorithms executed in parallel with the control loop. The 12-bit ADCs sample panel voltage/current and grid-side waveforms for grid-code-compliant synchronization, and the integrated op-amps condition current-shunt signals for anti-islanding and leakage-current monitoring. The extended -40C to +125C rating survives rooftop and outdoor enclosure temperatures, while dual-panel flash enables field updates as grid-interconnection standards evolve after installation.
Recommended
Wireless and IoT Sensor Hubs
As the local processing hub of an industrial IoT node, the DSPIC33CK256MP308-E/PT performs FFT-based vibration analysis, RMS computations and threshold detection locally, thanks to its DSP MAC instructions and 64KB RAM, sending only summarized features to the cloud - reducing wireless payload and latency. Its 8 DMA channels stream sensor data from multiple SPI/I2C devices concurrently, and the extended temperature grade suits installations inside motors, switchgear and outdoor enclosures. Dual-panel flash supports secure over-the-air firmware updates with a fallback panel, a key requirement for large fleets of unattended sensing equipment.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK256MP308-E/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK256MP308-I/PT | DSPIC33CK256MP508-E/PT | DSPIC33CK128MP308-E/PT | DSPIC33CK256MP308-H/PT |
|---|---|---|---|---|---|
| Package | 80-TQFP (12x12 mm) | 80-TQFP (12x12 mm) - same | 80-TQFP (12x12 mm) - same | 80-TQFP (12x12 mm) - same | 80-TQFP (12x12 mm) - same |
| Brand | 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 (100 MIPS) | 64 MHz max |
| Program Flash | 256 KB (dual panel) | 256 KB (dual panel) | 256 KB (dual panel) | 128 KB | 256 KB (dual panel) |
| RAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| CAN FD | No | No | Yes | No | No |
| DMA Channels | 8 | 8 | 8 | 8 | 8 |
Key Differentiators
- Extended -40C to +125C temperature rating (vs DSPIC33CK256MP308-I/PT)
- Pin count and I/O capacity for multi-peripheral designs (vs DSPIC33CK256MP205-E/PT)
- Full-speed 100 MHz core (vs DSPIC33CK256MP308-H/PT)
- Trade-off: no CAN FD on MP308 (vs DSPIC33CK256MP508-E/PT)
Design Notes
The dsPIC33CK core at 100 MHz requires a clean VDDCORE supply via the on-chip regulator; follow Microchip's datasheet connection requirements for the VCAP pin capacitance and low-ESR decoupling. Place 100 nF ceramic capacitors at every VDD pin pair of the 80-TQFP plus one bulk 10 uF per supply rail. Estimated: a 100 MHz core with active peripherals draws tens of mA - budget the 3.3V rail accordingly and verify with Microchip's current-estimation spreadsheet rather than assuming datasheet minimums.
For motor-control use, keep the PWM output traces short and matched to the gate drivers, and route ADC current-sense inputs as differential pairs away from PWM switching edges. Use a solid ground plane under the controller and connect the TQFP thermal pattern to ground with multiple vias. Per Microchip's dsPIC33CK design guidance, synchronize ADC sampling to the PWM period-center to sample current away from switching noise, which measurably reduces current-loop jitter.
Do not confuse the E (extended, -40C to +125C) and I (industrial, -40C to +85C) suffixes when sourcing - the -I variant is cheaper but will not meet extended-temperature requirements. Also verify the /PT (tray) versus /PT tape-and-reel ordering code against your pick-and-place flow. Finally, dual-panel flash programming requires the correct panel-swap boot sequence per the flash programming specification - a naive bootloader approach can brick the live panel.
Estimated: the 80-TQFP 12x12 mm package theta_JA is typically in the tens of C/W range on a standard 4-layer board (consult the package outline page for the exact figure). At an estimated 100-150 mA core+peripheral current from 3.3V, dissipation is roughly 0.3-0.5 W, implying a junction rise of about 15-25 C/W ambient on good copper - acceptable at +125C ambient only with adequate copper pour. Verify against the datasheet thermal table for your board stack-up.
Compliance Information
RoHS compliance consistent with Microchip's current production policy for the dsPIC33CK TQFP family per distributor listings; obtain formal certificates from Microchip's Quality resources. The family includes Functional Safety (FuSa) qualified variants per DigiKey listing.
