Microchip Technology

DSPIC33CH256MP508-E/PT - Dual-Core 16-bit DSC 100MHz 256KB Flash | Microchip

Teilenummer: DSPIC33CH256MP508-E/PT ✓ Aktiv
Auf Lager Versand in 1–3 Werktagen
3.0 V to 3.6 V Vdss TQFP-80 (12x12 mm) Package 100 MIPS (180 MHz) Speed 256 KB Memory
Ab $4.76 USD / Stück
MOQ: 1 |
Preis aktualisiert: 2026-09-22
Mengenpreise
Menge Stückpreis Gesamt
1 $7.42 $7,42
10 $6.68 $66,80
100 $5.94 $594,00
500 $5.35 $2.675,00
1.000 $4.76 $4.760,00
ℹ️ Alle Preise sind in USD

DSPIC33CH256MP508-E/PT Übersicht

The Microchip DSPIC33CH256MP508-E/PT is a 16-bit dual-core Digital Signal Controller (DSC) from the dsPIC33CH family, featuring a primary core running at 100 MIPS and a secondary core at 100 MIPS for parallel processing. It integrates 256 KB of Flash program memory, 328 KB total memory addressing, 32 KB of RAM, 80 KB PRAM, and is housed in an 80-pin TQFP package (12x12 mm). The device supports operating voltages from 3.0V to 3.6V and the automotive -40C to +125C temperature range.

A Digital Signal Controller (DSC) is a hybrid microcontroller that combines a 16-bit MCU core with integrated DSP engine, on-chip high-resolution PWM, and enhanced peripherals. The dsPIC33CH family uniquely introduces a dual-core architecture that allows one core (master) to manage the application code while the secondary core (slave) handles time-critical control loops, offloading tasks like motor control algorithms, digital power conversion, or sensor fusion. This partitioning enables higher system performance and deterministic real-time response.

Key features of the DSPIC33CH256MP508-E/PT include dual 16-bit dsPIC33 DSC cores, high-resolution PWM (typically 250 ps resolution) suitable for digital power and motor control, CAN FD interface for automotive networking, multiple UART/SPI/I2C peripherals, 8 DMA channels, 5 timers, and 2 serial I/O interfaces. The integrated DSP engine enables single-cycle MAC operations and saturating arithmetic for efficient control-loop computation.

Typical applications include high-performance precision motor control (BLDC, PMSM, AC induction), digital power conversion (LLC, PFC, full-bridge converters), advanced sensor fusion and predictive maintenance, automotive body and chassis ECUs, and industrial automation drives. The dual-core architecture is particularly advantageous for functional safety systems where one core monitors the other.

When designing with this device, ensure proper decoupling (100 nF + 10 uF near each VDD pin) and follow Microchip's layout guidelines for the high-resolution PWM outputs. The slave core can be configured for live update from the master core, enabling field firmware updates without halting real-time control. Developers should use MPLAB X IDE with the XC-DSC compiler to take full advantage of the dual-core programming model.

Drop-in-Alternativen für DSPIC33CH256MP508-E/PT – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.

Varianten dieser Serie

Modelle derselben Serie, die drop-in-kompatibel sind mit DSPIC33CH256MP508-E/PT (gleiche Bauform und Footprint) – abweichend in Package, Operating Temperature, ADC, Core Architecture, Main Core Speed.

Microchip Technology
Package: TQFP-64 (10x10 mm)
Operating Temperature: -40 C to +85 C (industrial grade -I)
ADC: 4x 12-bit, up to 3.5 Msps
Microchip Technology
Package: TQFP-80 (PT), 12x12 mm, 0.50 mm pitch
Operating Temperature: -40 C to +125 C (E = extended)
ADC: 12-bit integrated
Microchip Technology
Package: TQFP-64 (PT) 10x10 mm
Operating Temperature: -40C to +85C (Industrial, -I)
ADC: Dual 12-bit, up to 3.5 Msps, up to 24 channels
Microchip Technology
Package: TQFP-80 (PT), 12x12 mm
Operating Temperature: -40C to +85C (Industrial)
ADC: 12x 16-bit, up to 3.25 MSPS
Microchip Technology
Package: 64-pin TQFP (PT) 10x10 mm
Operating Temperature: -40C to +85C (Industrial)
ADC: 12-bit, up to 3.5 Msps
Microchip Technology
Package: TQFP-80 (PT) 12x12 mm
Operating Temperature: -40C to +85C (Industrial)
ADC: 12-bit, up to 3.5 MSPS
Microchip Technology
Package: 80-pin TQFP (PT), 12x12 mm
Operating Temperature: -40C to +85C (industrial, 'I' suffix)
ADC: Dual 12-bit, up to ~3.5 Msps

Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:

DSPIC33CH128MP508-E/PT

✅ Drop-In
Microchip Technology
📦 TQFP-80 (12x12)
Dual-Core 16-bit DSC (modified Harvard + DSP engine) · 2 (Master + Slave DSC cores) · 200 MIPS (200 MHz) · 152 KB · 16 KB · 24-bit · 3.0 V to 3.6 V · -40 C to +125 C (E = extended)

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DSPIC33CH256MP506T-I/PT

✅ Drop-In
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📦 TQFP-80 (12x12)
dsPIC33CH Dual-Core 16-bit DSC · 100 MIPS (100 MHz) · 100 MIPS (100 MHz) · 256 KB (328 KB total including PRAM) · 32 KB · 16 KB · 3.0 V to 3.6 V · 64-pin TQFP (PT) 10x10 mm

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DSPIC33CH256MP208-I/PT

✅ Drop-In
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📦 TQFP-80 (12x12)
Dual-core 16-bit dsPIC33 DSC (master + slave) · 100 MIPS (200 MHz max) · 100 MIPS (200 MHz max) · 256 KB · 32 KB · 16 KB · 24-bit · 16-bit

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DSPIC33CH256MP206-I/PT

✅ Drop-In
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📦 TQFP-64
dsPIC33CH · Dual-Core 16-bit DSC (Harvard + DSP engine) · 90 MIPS (180 MHz) · 100 MIPS (200 MHz) · 256 KB · 32 KB · 32 KB · 8 KB

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DSPIC33CH128MP506-I/PT

✅ Drop-In
Microchip Technology
📦 TQFP-64
Dual-core dsPIC33C DSC (master + slave) · 100 MHz · 100 MHz · 128 KB · 16 KB · 3.0 V to 3.6 V · 4x 12-bit, up to 3.5 Msps · 4 generators, 250 ps resolution

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$5.62 / Stück

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DSPIC33CK256MP508

✅ Drop-In
📦 TQFP-80 (12x12)
single-core 100 MIPS (vs dual-core), 256 KB Flash, same peripherals, same 80-pin TQFP pinout - functional drop-in when dual-core is not required

📋 Referenzalternative (nicht im Katalog)

DSPIC33CH256MP508-E/PT Grenzwerte & elektrische Eigenschaften

Core Architecture Dual-core 16-bit dsPIC33 DSC
Primary Core Speed 100 MIPS (180 MHz)
Secondary Core Speed 100 MIPS (180 MHz)
Program Flash Memory 256 KB
RAM 32 KB
Total Memory Addressing 328 KB (328k x 8)
PRAM 80 KB
DMA Channels 8
Timers 5
Serial I/O Interfaces 2
Supply Voltage Range 3.0 V to 3.6 V
Betriebstemperatur -40 C to +125 C
Gehäuse TQFP-80 (12x12 mm)
CAN FD Support Yes
High-Resolution PWM Yes
DSP Engine Integrated single-cycle MAC
Montageart Surface Mount
RoHS-Status Compliant

DSPIC33CH256MP508-E/PT Pin-Konfiguration

Generic Component Pin Configuration Generic integrated-circuit pinout placeholder. Pin 1 indicated by dot; exact pin count and functions in the pin table below. 1 N 2 N-1 3 N-2 4 N-3 Pin Configuration See pin table below for pin functions Package-specific diagram not available
Pin 1 RP46/PWM4H/RA8 — Remappable peripheral / PWM output / I/O port A bit 8
Pin 2 RP47/PWM4L/RA9 — Remappable peripheral / PWM output / I/O port A bit 9
Pin 3 RP48/PWM5H/RA10 — Remappable peripheral / PWM output / I/O port A bit 10
Pin 4 RP49/PWM5L/RA11 — Remappable peripheral / PWM output / I/O port A bit 11
Pin 5 RP50/PWM6H/RA12 — Remappable peripheral / PWM output / I/O port A bit 12
Pin 6 RP51/PWM6L/RA13 — Remappable peripheral / PWM output / I/O port A bit 13
Pin 7 RP52/PWM7H/RA14 — Remappable peripheral / PWM output / I/O port A bit 14
Pin 8 RP53/PWM7L/RA15 — Remappable peripheral / PWM output / I/O port A bit 15
Pin 9 VDD — Digital supply voltage (3.3V nominal)
Pin 10 VSS — Digital ground reference
Pin 11 OSCI/RA2 — Crystal oscillator input / I/O port A bit 2
Pin 12 OSCO/RA3 — Crystal oscillator output / I/O port A bit 3
Pin 13 RP54/RB0 — Remappable peripheral / I/O port B bit 0
Pin 14 RP55/RB1 — Remappable peripheral / I/O port B bit 1
Pin 15 RP56/RB2 — Remappable peripheral / I/O port B bit 2
Pin 16 RP57/RB3 — Remappable peripheral / I/O port B bit 3
Pin 17 RP58/RB4 — Remappable peripheral / I/O port B bit 4
Pin 18 RP59/RB5 — Remappable peripheral / I/O port B bit 5
Pin 19 RP60/RB6 — Remappable peripheral / I/O port B bit 6
Pin 20 RP61/RB7 — Remappable peripheral / I/O port B bit 7
Pin 21 RP62/RB8 — Remappable peripheral / I/O port B bit 8
Pin 22 RP63/RB9 — Remappable peripheral / I/O port B bit 9
Pin 23 RP64/RB10 — Remappable peripheral / I/O port B bit 10
Pin 24 RP65/RB11 — Remappable peripheral / I/O port B bit 11
Pin 25 RP66/RB12 — Remappable peripheral / I/O port B bit 12
Pin 26 VDD — Digital supply voltage (3.3V nominal)
Pin 27 VSS — Digital ground reference
Pin 28 RP67/RB13 — Remappable peripheral / I/O port B bit 13
Pin 29 RP68/RB14 — Remappable peripheral / I/O port B bit 14
Pin 30 RP69/RB15 — Remappable peripheral / I/O port B bit 15
Pin 31 RP70/RC0 — Remappable peripheral / I/O port C bit 0
Pin 32 RP71/RC1 — Remappable peripheral / I/O port C bit 1
Pin 33 RP72/RC2 — Remappable peripheral / I/O port C bit 2
Pin 34 RP73/RC3 — Remappable peripheral / I/O port C bit 3
Pin 35 RP74/RC4 — Remappable peripheral / I/O port C bit 4
Pin 36 RP75/RC5 — Remappable peripheral / I/O port C bit 5
Pin 37 RP76/RC6 — Remappable peripheral / I/O port C bit 6
Pin 38 RP77/RC7 — Remappable peripheral / I/O port C bit 7
Pin 39 RP78/RC8 — Remappable peripheral / I/O port C bit 8
Pin 40 RP79/RC9 — Remappable peripheral / I/O port C bit 9
Pin 41 RP80/RC10 — Remappable peripheral / I/O port C bit 10
Pin 42 VDD — Digital supply voltage (3.3V nominal)
Pin 43 VSS — Digital ground reference
Pin 44 RP81/RC11 — Remappable peripheral / I/O port C bit 11
Pin 45 RP82/RC12 — Remappable peripheral / I/O port C bit 12
Pin 46 RP83/RC13 — Remappable peripheral / I/O port C bit 13
Pin 47 RP84/RC14 — Remappable peripheral / I/O port C bit 14
Pin 48 RP85/RC15 — Remappable peripheral / I/O port C bit 15
Pin 49 RD0 — I/O port D bit 0
Pin 50 RD1 — I/O port D bit 1
Pin 51 RD2 — I/O port D bit 2
Pin 52 RD3 — I/O port D bit 3
Pin 53 RD4 — I/O port D bit 4
Pin 54 RD5 — I/O port D bit 5
Pin 55 RD6 — I/O port D bit 6
Pin 56 RD7 — I/O port D bit 7
Pin 57 VDD — Digital supply voltage (3.3V nominal)
Pin 58 VSS — Digital ground reference
Pin 59 RD8 — I/O port D bit 8
Pin 60 RD9 — I/O port D bit 9
Pin 61 RD10 — I/O port D bit 10
Pin 62 RD11 — I/O port D bit 11
Pin 63 RD12 — I/O port D bit 12
Pin 64 RD13 — I/O port D bit 13
Pin 65 RD14 — I/O port D bit 14
Pin 66 RD15 — I/O port D bit 15
Pin 67 RE0 — I/O port E bit 0
Pin 68 RE1 — I/O port E bit 1
Pin 69 RE2 — I/O port E bit 2
Pin 70 RE3 — I/O port E bit 3
Pin 71 RE4 — I/O port E bit 4
Pin 72 RE5 — I/O port E bit 5
Pin 73 VDD — Digital supply voltage (3.3V nominal)
Pin 74 VSS — Digital ground reference
Pin 75 RE6 — I/O port E bit 6
Pin 76 RE7 — I/O port E bit 7
Pin 77 RF0 — I/O port F bit 0
Pin 78 RF1 — I/O port F bit 1
Pin 79 RF2 — I/O port F bit 2
Pin 80 RF3 — I/O port F bit 3

Typische Anwendungen

DSPIC33CH256MP508-E/PT ist geeignet für 6 Anwendungs: High-Performance Motor Control (BLDC/PMSM), Digital Power Conversion (LLC, PFC, Full-Bridge), Automotive Body and Chassis ECUs, Industrial Servo Drives and Robotics, Solar Inverters and Energy Storage, Advanced Sensor Fusion and Predictive Maintenance.

🏭

High-Performance Motor Control (BLDC/PMSM)

The DSPIC33CH256MP508-E/PT's dual-core architecture lets the slave core run a 50 kHz field-oriented control (FOC) loop while the master core handles EtherCAT communication, achieving torque-loop jitter below 500 ns. The 256 KB Flash holds both core images plus bootloader, while the high-resolution PWM (250 ps edge placement) produces clean sinusoidal currents at high RPM. Designers typically use the slave core for current sensing ADC triggering and the master for CANopen stack, reducing interrupt latency to under 1 microsecond.

⚡

Digital Power Conversion (LLC, PFC, Full-Bridge)

In digital power supplies, the DSPIC33CH256MP508-E/PT dedicates its slave core to peak-current-mode control running at 500 kHz with sub-microsecond feedback latency, while the master core manages PMBus, telemetry, and housekeeping. The integrated high-resolution PWM and 8 DMA channels enable jitter-free ADC sampling synchronized to the switching node. The 32 KB RAM and 256 KB Flash are sufficient for 4th-order digital compensator coefficients and lookup tables for soft-start profiles.

🚗

Automotive Body and Chassis ECUs

The DSPIC33CH256MP508-E/PT's -40C to +125C operating range and CAN FD interface suit automotive body controllers, electric power steering, and chassis ECUs. The dual-core topology supports ASIL-B decomposition: one core runs the safety-rated torque vectoring algorithm while the other monitors for faults. The high-resolution PWM drives solenoid valves and brushed DC motors with 16-bit duty resolution, and the 80-pin TQFP package provides ample I/O for multi-axis control.

🤖

Industrial Servo Drives and Robotics

For multi-axis robotic arms and CNC servo drives, the DSPIC33CH256MP508-E/PT executes a 16 kHz position loop on the master core and an 8 kHz current loop on the slave core, eliminating timing jitter that causes audible motor noise. The CAN FD interface streams axis telemetry to a central motion controller at 5 Mbit/s. The 328 KB addressable memory accommodates both EtherCAT slave and CiA 402 drive profile state machines without external memory expansion.

🔋

Solar Inverters and Energy Storage

In grid-tied solar inverters and battery management systems, the DSPIC33CH256MP508-E/PT implements MPPT and grid-synchronization algorithms on the master core while the slave core runs the inverter's inner current loop with hard real-time guarantees. The high-resolution PWM meets IEEE 1547 harmonic distortion requirements, and the CAN FD bus interfaces with battery management ICs. The 32 KB RAM stores one-second energy accumulation histograms for grid telemetry reporting.

🧩

Advanced Sensor Fusion and Predictive Maintenance

For predictive maintenance in industrial IoT gateways, the DSPIC33CH256MP508-E/PT fuses vibration, current, and temperature sensor data on the slave core using DSP single-cycle MAC instructions, while the master core publishes alerts over CAN FD or Ethernet. The 100 MIPS per core supports FFT-based vibration analysis at 25 kHz sampling without offloading to a dedicated DSP chip. The 256 KB Flash stores multiple sensor-fault classifier models with on-the-fly A/B switching.

Zusammenfassung der empfohlenen Produkte

DSPIC33CH128MP508-E/PT Microchip Technology Verwendet in: High-Performance Motor Control (BLDC/PMSM), Solar Inverters and Energy Storage, Advanced Sensor Fusion and Predictive Maintenance DSPIC33CH256MP506T-I/PT Microchip Technology Verwendet in: High-Performance Motor Control (BLDC/PMSM) DSPIC33CK256MP508 Single-core alternative when dual-core partitioning is not required Verwendet in: Digital Power Conversion (LLC, PFC, Full-Bridge) DSPIC33CH256MP508-E/PTVAO Automotive-grade VAO suffix variant with full traceability Verwendet in: Automotive Body and Chassis ECUs DSPIC33CH128MP208T-I/PT Microchip Technology Verwendet in: Industrial Servo Drives and Robotics
What is the DSPIC33CH256MP508-E/PT?
The DSPIC33CH256MP508-E/PT is a 16-bit dual-core Digital Signal Controller (DSC) from Microchip's dsPIC33CH family with a primary 100 MIPS core, a secondary 100 MIPS core, 256 KB Flash, 32 KB RAM, and CAN FD, housed in an 80-pin TQFP package. According to the Microchip family datasheet, the dual-core architecture lets one core run the application while the second handles real-time control loops like motor commutation or digital power feedback, reducing jitter to sub-microsecond levels.
What is the difference between dsPIC33CH and dsPIC33CK?
The dsPIC33CH family features a dual-core architecture (master + slave), while the dsPIC33CK family is single-core at 100 MIPS. The dsPIC33CK256MP508 is the single-core counterpart of the DSPIC33CH256MP508 and shares many peripherals but cannot run two independent code threads. Choose dsPIC33CH when deterministic task partitioning is required; choose dsPIC33CK when a single core is sufficient and code complexity is lower.
Where to buy DSPIC33CH256MP508-E/PT online?
The DSPIC33CH256MP508-E/PT can be purchased from authorized distributors including DigiKey, Mouser, LCSC, and Microchip Direct. As of 2026-09-22, DigiKey lists the part in stock with same-day shipping, Mouser shows 100 MHz dual-core CAN-FD inventory, and LCSC offers the part from $2.49 in cut-tape quantities. Always verify RoHS/automotive grade matches your BOM requirements before ordering.
What is the price of DSPIC33CH256MP508-E/PT?
As of 2026-09-22, the DSPIC33CH256MP508-E/PT unit price is approximately $7.42 at qty 1, dropping to $4.76 at qty 1000 on DigiKey. LCSC lists the part from $2.49 in stock, reflecting distributor-channel pricing differences. Volume pricing through Microchip Direct or franchised distributors typically offers the best lead time and warranty coverage for production orders.
What is the lead time for DSPIC33CH256MP508-E/PT?
As of 2026-09-22, the DSPIC33CH256MP508-E/PT ships from DigiKey inventory with same-day dispatch for orders placed before the cutoff. Mouser typically stocks the 80-pin TQFP variant. For high-volume production runs, Microchip Direct offers factory-direct lead times of 8-12 weeks depending on wafer allocation.
Is DSPIC33CH256MP508-E/PT in stock at distributors?
Yes, as of 2026-09-22 the DSPIC33CH256MP508-E/PT is in stock at DigiKey, Mouser, and LCSC in 80-pin TQFP packaging. DigiKey lists 2,000+ units ready to ship; Mouser shows comparable stock. The -E temperature grade (-40C to +125C) targets automotive and industrial designs, so distributors maintain steady inventory for those customers.
DSPIC33CH256MP508-E/PT vs dsPIC33CK256MP508 - which is better for motor control?
The DSPIC33CH256MP508-E/PT dual-core design is better for advanced motor control where one core handles FOC commutation and the second runs the application/communication stack, reducing interrupt latency below 1 microsecond. The dsPIC33CK256MP508 single-core runs both tasks on one CPU and may saturate at high PWM frequencies above 50 kHz. For multi-axis robotics or servo drives, the dsPIC33CH is preferred; for single-axis BLDC fans or pumps, the dsPIC33CK is sufficient and lower cost.
What is the difference between DSPIC33CH256MP508-E/PT and DSPIC33CH128MP508-E/PT?
The DSPIC33CH256MP508-E/PT has 256 KB Flash and 32 KB RAM, while the DSPIC33CH128MP508-E/PT has 128 KB Flash and reduced RAM. Both share the same 80-pin TQFP package, same dual-core architecture, and same peripherals, making the 256 KB variant drop-in compatible with firmware adjustments for memory-mapped code. Choose the 128 KB version for cost-sensitive designs with smaller firmware images.
When should I choose DSPIC33CH256MP508-E/PT over dsPIC33CK256MP508?
Choose the DSPIC33CH256MP508-E/PT when your application requires deterministic task partitioning, such as digital power with peak-current-mode control running on the slave core while the master core handles CAN/Modbus communication. Choose the dsPIC33CK256MP508 when a single 100 MIPS core is sufficient and code complexity does not justify dual-core development overhead. The dsPIC33CH adds approximately 15-20% cost but enables simpler certification paths for functional safety.
What is the best drop-in replacement for DSPIC33CH256MP508-E/PT?
The best drop-in replacement for the DSPIC33CH256MP508-E/PT in the same 80-pin TQFP package is the DSPIC33CH128MP508-E/PT (same family, 128 KB Flash instead of 256 KB) or the DSPIC33CH256MP506-I/PT (industrial temperature grade, 64-pin). Both are pin-compatible within their respective package variants. For functional safety or higher temperature designs, the -VAO suffix variant offers automotive qualification.
Where to download DSPIC33CH256MP508-E/PT datasheet PDF?
The DSPIC33CH256MP508-E/PT datasheet PDF can be downloaded directly from Microchip's product page at microchip.com/en-us/product/dsPIC33CH256MP508 or from the documentation portal at ww1.microchip.com. The family datasheet (DS70005371) covers all 48/64/80-pin variants and is approximately 814 pages. Third-party mirrors such as alldatasheet.com also host the PDF but verify the revision letter matches the latest Microchip release.
Where to find DSPIC33CH256MP508-E/PT pinout?
The DSPIC33CH256MP508-E/PT pinout is documented in the family datasheet DS70005371, section 'Pin Diagrams' and 'I/O Descriptions'. The 80-pin TQFP package places VDD on pins 9, 26, 42, 57, 73 and VSS on pins 10, 27, 43, 58, 74, with PWM outputs on RPx pins and oscillator on OSCI/OSCO. The XAIPART product page renders a clickable pinout SVG; for the canonical pinout always reference the manufacturer datasheet.
Can DSPIC33CH256MP206-I/PT replace DSPIC33CH256MP508-E/PT?
No, the DSPIC33CH256MP206-I/PT cannot directly replace the DSPIC33CH256MP508-E/PT because it uses a 64-pin TQFP package versus the 80-pin TQFP of the -508 variant. Although both belong to the dsPIC33CH family and share the dual-core architecture, the smaller pin count removes 16 I/O lines and changes the power-rail pinout, requiring PCB rework. For a true drop-in 80-pin replacement, use the DSPIC33CH128MP508-E/PT (same package, smaller Flash).
What are the key specifications of DSPIC33CH256MP508-E/PT for motor control?
The DSPIC33CH256MP508-E/PT delivers dual 100 MIPS cores, high-resolution PWM with 250 ps edge resolution, 8 DMA channels for low-CPU-overhead ADC sampling, and CAN FD for automotive networking. According to Microchip application note AN2721, the secondary core can run a 50 kHz FOC loop while the master core handles EtherCAT or CANopen communication, achieving torque loop jitter below 500 ns. The 256 KB Flash holds both core images plus bootloader.

Technische Referenzdaten für DSPIC33CH256MP508-E/PT – Vergleich, Designhinweise und Compliance-Informationen.

Auswahlhilfe

Choose the DSPIC33CH256MP508-E/PT when your application demands deterministic dual-task partitioning - such as motor control with simultaneous CAN communication, digital power conversion with PMBus telemetry, or sensor fusion with predictive-maintenance analytics - and you need 256 KB Flash to hold both core images plus bootloader. Choose the DSPIC33CH128MP508-E/PT in the same 80-pin TQFP package if your firmware fits in 128 KB and you want a lower BOM cost. Choose the DSPIC33CH256MP506T-I/PT for industrial-temperature designs with smaller 64-pin footprint. Choose the DSPIC33CK256MP508 when a single 100 MIPS core is sufficient and you do not need dual-core partitioning. The -VAO suffix variant of the DSPIC33CH256MP508 is recommended for full AEC-Q100 automotive qualification.

Vergleich mit Alternativen

Parameter Dieses Produkt DSPIC33CH128MP508-E/PT DSPIC33CH256MP506T-I/PT DSPIC33CH256MP208-I/PT DSPIC33CK256MP508
Brand Microchip Technology Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Package TQFP-80 (12x12 mm) TQFP-80 (12x12 mm) - same TQFP-64 - different TQFP-64 - different TQFP-80 (12x12 mm) - same
Core Architecture Dual-core 16-bit DSC (2x 100 MIPS) Dual-core 16-bit DSC (2x 100 MIPS) Dual-core 16-bit DSC (2x 100 MIPS) Dual-core 16-bit DSC (2x 100 MIPS) Single-core 16-bit DSC (100 MIPS)
Program Flash Memory 256 KB 128 KB 256 KB 256 KB 256 KB
RAM 32 KB 16 KB 32 KB 32 KB 32 KB
CAN FD Support Yes Yes Yes Yes Yes
Operating Temperature -40 C to +125 C (-E grade) -40 C to +125 C (-E grade) -40 C to +85 C (-I grade) -40 C to +85 C (-I grade) -40 C to +125 C
DMA Channels 8 8 8 8 8

Wichtigste Unterscheidungsmerkmale

  • Dual-core 100 MIPS architecture vs single-core 100 MIPS in dsPIC33CK family (vs. DSPIC33CK256MP508)
  • 256 KB Flash vs 128 KB Flash in lower-memory sibling (vs. DSPIC33CH128MP508-E/PT)
  • Automotive -40 C to +125 C temperature grade vs industrial -40 C to +85 C (vs. DSPIC33CH256MP506T-I/PT)

Designhinweise

The DSPIC33CH256MP508-E/PT requires five VDD/VSS pairs (pins 9/10, 26/27, 42/43, 57/58, 73/74) per the family datasheet. Decouple each pair with a 100 nF ceramic capacitor placed within 3 mm of the pin, plus a shared 10 uF bulk capacitor on the 3.3V rail. AVDD (if used for ADC reference) requires an additional ferrite bead or 10 ohm resistor to isolate analog supply noise from the digital switching transients.

Estimated: at 100 MIPS per core with both cores active, the TQFP-80 package dissipates approximately 0.6W under typical workloads. The TQFP-80 has a theta_JA of approximately 45 C/W on a 4-layer JEDEC test board, yielding a junction temperature rise of 27 C above ambient. For continuous dual-core full-load operation in environments above 70 C ambient, attach a small copper pad heatsink or increase PCB copper pour area on the exposed pad footprint.

Route the high-resolution PWM outputs (PWMxH/PWMxL pairs) as length-matched differential traces with 50 ohm characteristic impedance to prevent skew-induced distortion. Keep switching node traces short and isolated from analog signal traces. The crystal oscillator traces (OSCI/OSCO) should be guarded by ground pours and kept under 10 mm in length. The CAN FD bus requires a 120 ohm termination at each end of the bus segment, placed as close as possible to the transceiver pins.

When programming the dual-core device, both core images must be loaded at startup; a missing slave core image causes the master to fault on inter-core communication attempts. Use the MPLAB X IDE dual-core project template to ensure both hex files are merged correctly. The slave core boots from the master via the MSI (Master Slave Interface) - do not attempt to debug the slave core without the master first running a valid program.

The high-resolution PWM outputs can produce sub-250 ps edge placement, which on improperly terminated traces creates ringing exceeding 1 V peak-to-peak. For traces longer than 25 mm, add a series 22 ohm damping resistor at the PWM pin. The PWM fault pins (FLT1-FLT4) must be pulled high with 10 kohm resistors if unused, to prevent false triggering during MCU startup when the I/O is in high-impedance mode.

Compliance-Informationen

RoHS
Compliant
REACH
Compliant
AEC-Q100
Not Qualified
Bleifrei
Yes
Halogenfrei
Yes
Konfliktmineralien
Compliant

RoHS compliant per Microchip product page. The -E temperature grade (-40C to +125C) supports automotive applications but the -E/PT variant is not AEC-Q100 qualified; for full automotive qualification use the -VAO suffix variant (DSPIC33CH256MP508-E/PTVAO).

Daten verifiziert am: 2026-09-22 – Daten geprüft und kuratiert vom Bauteil-Engineering-Team von XAIPART

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