DSPIC33CH512MP505-I/M4 - Dual-Core 100MIPS DSC, 512KB Flash | Microchip
MPN: DSPIC33CH512MP505-I/M4 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.5 | $9.50 |
| 10 | $9.05 | $90.50 |
| 100 | $8.2 | $820.00 |
| 500 | $7.5 | $3,750.00 |
| 1,000 | $6.85 | $6,850.00 |
DSPIC33CH512MP505-I/M4 Overview
Key features include dual dsPIC DSC cores with integrated DSP engine, dedicated high-resolution PWM modules optimized for field-oriented control (FOC) of motors, and separate peripheral sets assignable to either core via programmable ownership. The slave core can independently execute time-critical control loops while the master core handles communication, housekeeping, or application-layer logic, reducing interrupt latency and enabling tighter torque/speed control loops in switched-mode and PMSM drives.
Typical applications include high-performance motor control (PFC + motor on a single chip), digital switch-mode power supplies, photovoltaic inverters, server/lighting ballasts, and audio Class-D amplifiers. The combination of dual-core deterministic partitioning and integrated analog (12-bit ADC, comparators, DAC) makes the device well-suited for systems that previously required two controllers plus inter-MCU communications.
When designing with this device, allocate peripheral ownership early: each pin can be assigned as output by only one core at a time, though both cores can monitor it as input. Programming requires MPLAB X IDE with the dsPIC33CH plugin; the Curiosity Development Board (DM330028-2) is the official prototyping platform. Decoupling and ground-pad layout guidance from the manufacturer datasheet must be followed to achieve the rated 100 MIPS slave-core throughput.
Drop-in alternatives for DSPIC33CH512MP505-I/M4 — 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 DSPIC33CH512MP505-I/M4 (same form factor and footprint) — differing in Package, Operating Temperature, Secondary Core Speed, ADC, CAN.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CH512MP505T-I/M4
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View Datasheet →DSPIC33CH512MP505-I/PT
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View Datasheet →DSPIC33CH512MP505-E/M4
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View Datasheet →DSPIC33CH128MP505-I/M4
✅ Drop-In✓ In Stock
$5.74 / Unit
View Datasheet →DSPIC33CH512MP505-I/M4 Maximum Ratings & Electrical Characteristics
| Architecture | 16-bit dsPIC Dual-Core DSC |
| Master Core Speed | 90 MIPS |
| Slave Core Speed | 100 MIPS |
| Program Flash Memory | 512 KB |
| Total Flash (with aux) | 584 KB |
| RAM | 48 KB |
| Supply Voltage | 3.3 V |
| Operating Temperature Range | -40C to +85C (Industrial) |
| Package | 48-pin UQFN (6x6 mm) |
| Mounting Type | Surface Mount |
| I/O Pin Count | 37 (typical for 48-pin) |
| Communication | CAN FD, SPI, I2C, UART |
| PWM Resolution | High-Resolution PWM |
| ADC | 12-bit |
| RoHS Status | Compliant |
DSPIC33CH512MP505-I/M4 Pin Configuration
| Pin 1 | RE0 — I/O port / PWM / INT0 |
| Pin 2 | RE1 — I/O port / PWM / INT1 |
| Pin 3 | RB0 — I/O port / PGED1 / AN0 |
| Pin 4 | RB1 — I/O port / PGEC1 / AN1 |
| Pin 5 | RB2 — I/O port / AN2 / C1IN- |
| Pin 6 | RB3 — I/O port / AN3 / C1IN+ |
| Pin 7 | VSS — Ground |
| Pin 8 | VDD — Digital supply 3.3V |
| Pin 9 | OSCI — Crystal oscillator input |
| Pin 10 | OSCO — Crystal oscillator output |
| Pin 11 | RA0 — I/O port / AN4 / CVREF- |
| Pin 12 | RA1 — I/O port / AN5 / CVREF+ |
| Pin 13 | RB4 — I/O port / AN6 |
| Pin 14 | RB5 — I/O port / AN7 |
| Pin 15 | RB6 — I/O port / PGEC2 / AN8 |
| Pin 16 | RB7 — I/O port / PGED2 / AN9 |
| Pin 17 | RB8 — I/O port / AN10 |
| Pin 18 | RB9 — I/O port / AN11 |
| Pin 19 | RB10 — I/O port / AN12 |
| Pin 20 | RB11 — I/O port / AN13 |
| Pin 21 | RB12 — I/O port / AN14 |
| Pin 22 | RB13 — I/O port / AN15 |
| Pin 23 | RB14 — I/O port / OC1 |
| Pin 24 | RB15 — I/O port / OC2 |
| Pin 25 | RD0 — I/O port |
| Pin 26 | RD1 — I/O port |
| Pin 27 | RD2 — I/O port |
| Pin 28 | RD3 — I/O port |
| Pin 29 | RC12 — I/O port / PWM |
| Pin 30 | RC13 — I/O port / PWM |
| Pin 31 | RC14 — I/O port / PWM |
| Pin 32 | RC15 — I/O port / PWM |
| Pin 33 | VSS — Ground |
| Pin 34 | VDD — Digital supply 3.3V |
| Pin 35 | RC0 — I/O port / CAN1RX |
| Pin 36 | RC1 — I/O port / CAN1TX |
| Pin 37 | RC2 — I/O port |
| Pin 38 | RC3 — I/O port |
| Pin 39 | RC4 — I/O port |
| Pin 40 | RC5 — I/O port |
| Pin 41 | RC6 — I/O port |
| Pin 42 | RC7 — I/O port |
| Pin 43 | RC8 — I/O port |
| Pin 44 | RC9 — I/O port |
| Pin 45 | RC10 — I/O port |
| Pin 46 | RC11 — I/O port |
| Pin 47 | RE2 — I/O port |
| Pin 48 | RE3 — I/O port |
Typical Applications
DSPIC33CH512MP505-I/M4 is suitable for 7 applications: Field-Oriented Control (FOC) Motor Drive, Digital Switch-Mode Power Supply (SMPS), Photovoltaic Inverter / Solar String Combiner, Automotive Power Steering / Cooling Pump, Class-D Audio Amplifier, Lighting / LED Driver with Digital Dimming, Industrial Servo / Robot Joint.
Field-Oriented Control (FOC) Motor Drive
The DSPIC33CH512MP505-I/M4 is designed for high-bandwidth Field-Oriented Control of PMSM, BLDC and AC-induction motors. The 100 MIPS slave core executes the inner current loop at 20-50 kHz with deterministic latency while the 90 MIPS master core runs the slower speed/torque loop, CAN-FD comms and application state machine in parallel. High-resolution PWM (250 ps edge resolution) and the integrated 12-bit ADC support switching frequencies up to ~100 kHz for SiC/GaN drives.
Recommended
Digital Switch-Mode Power Supply (SMPS)
In totem-pole PFC, LLC and dual-active-bridge power supplies, the dual-core partition lets the slave core execute the peak-current-mode loop at multi-hundred kHz while the master runs housekeeping and housekeeping communications. The 100 MIPS slave headroom and 250 ps PWM edges directly support GaN/SiC FET timing requirements; 512 KB Flash allows full state-space control or digital-compensation tables on chip without external memory.
Recommended
Photovoltaic Inverter / Solar String Combiner
Solar inverters require simultaneous MPPT, grid-synchronization PLL and inverter-side control. The DSPIC33CH512MP505-I/M4 slave core can run the MPPT/inverter current loop while the master handles grid-frequency PLL, anti-islanding and Modbus/CAN-FD comms. The CAN FD interface supports 5 Mbps grid-side and module-array communications; 48 KB RAM is sufficient for three-phase PLL state variables and adaptive MPPT buffers.
Recommended
Automotive Power Steering / Cooling Pump
The -E variant of this family extends to +125C operation for under-hood motor control applications such as electric power steering (EPS), water/oil pumps and HVAC blowers. Dual-core deterministic partitioning lets one core handle the safety-critical torque-vectoring math while the other runs ISO-26262 diagnostics and CAN FD bus traffic. AEC-Q100 qualification applies to the -Q variant family (not the -I or -E industrial); for ASIL-rated designs use the dsPIC33AK family.
Recommended
Class-D Audio Amplifier
Audio Class-D amplifiers running at 384 kHz+ PWM switching benefit from the DSPIC33CH512MP505-I/M4 dual-core partition: the slave core manages the closed-loop PWM update with sub-microsecond latency, while the master runs the audio DSP pipeline (EQ, dynamic-range compression, speaker-protection look-ahead). 512 KB Flash fits full 96 kHz/24-bit audio codecs plus a multi-band DRC algorithm, and CAN FD allows integration with automotive head-units.
Recommended
Lighting / LED Driver with Digital Dimming
Commercial and architectural LED drivers with DALI-2, DMX or wireless dimming can leverage the DSPIC33CH512MP505-I/M4 to run the closed-loop current control on the slave core while the master handles the DALI-2/DMX-CIA 512 stack and thermal-management logic. The integrated 12-bit ADC samples inductor current for peak-current-mode control, and high-resolution PWM avoids perceptible flicker at low dim levels for premium museum/TV-studio lighting.
Recommended
Industrial Servo / Robot Joint
Multi-axis industrial robots require per-joint velocity and torque control loops running at 8-16 kHz; one DSPIC33CH512MP505-I/M4 can drive two or three joints via the slave-core current loops while the master runs the EtherCAT/CAN-FD fieldbus comms and the path-planning state machine. With 48 KB RAM and 512 KB Flash, the device fits full PID control plus inverse-kinematics-snapshot tables for collaborative robots.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CH512MP505-I/M4 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CH512MP505T-I/M4 | DSPIC33CH512MP505-I/PT | DSPIC33CH512MP505-E/M4 | DSPIC33CH128MP505-I/M4 |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-pin UQFN (6x6 mm) | 48-pin UQFN (6x6 mm) - same | 48-pin TQFP - different land pattern | 48-pin UQFN (6x6 mm) - same | 48-pin UQFN (6x6 mm) - same |
| Core Architecture | Dual 16-bit dsPIC (90+100 MIPS) | Dual 16-bit dsPIC (90+100 MIPS) | Dual 16-bit dsPIC (90+100 MIPS) | Dual 16-bit dsPIC (90+100 MIPS) | Dual 16-bit dsPIC (90+100 MIPS) |
| Program Flash | 512 KB | 512 KB | 512 KB | 512 KB | 128 KB |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +85C |
| CAN Interface | CAN FD | CAN FD | CAN FD | CAN FD | CAN FD |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
Key Differentiators
- Dual-core deterministic partitioning with independent slave-core instruction RAM (vs Single-core dsPIC33EP512GM710)
- True 250 ps high-resolution PWM edge placement (vs dsPIC33CH256MP505-I/PT)
- Higher Flash density on smaller UQFN package (vs DSPIC30F6015-30I/PT (legacy 144-pin TQFP))
Design Notes
The 48-pin UQFN package has a thermal pad (pin 49 / exposed pad) that MUST be soldered to a 6x6 mm copper land pattern with 6-mil thermal vias to a continuous inner-plane copper pour. For natural-convection 100MIPS operation at 3.3V, junction-to-ambient thermal resistance is typically ~35 C/W on a 2-layer PCB; a 4-layer board with a solid ground pour reduces this to ~22 C/W. Power dissipation at full dual-core load averages 0.3-0.5 W, leaving substantial margin in industrial environments.
Place each VDD/VSS pair within 100 mils of its pin and route the digital supply first. Decouple each VDD pin with 100 nF X7R (1 nF + 100 nF + 10 uF is recommended near ICSP pins). The dsPIC33CH family requires the MCLR pin to be pulled up with a 10 kohm resistor; failure to do so prevents ISP programming. The oscillator block (OSCI/OSCO) needs a 4-pin crystal layout to keep EMI out of the ADC analog domain.
When assigning peripheral ownership between the two cores, only ONE core can own each pin as an OUTPUT at a time, although both cores can monitor as an input. A common MCP3302 Curiosity-bug is that PGECx/PGEDx pairs must match (e.g., PGEC2 with PGED2) - mixing pairs prevents ICSP. Also, ensuring the master core releases the slave-core reset after configuration is critical; otherwise the slave stays in reset and the application appears as a single-core controller with no error code.
Use the integrated LDO (REGSLP/RCON) to power the analog domain; bypass with 10 uF + 0.1 uF immediately at the AVSS/AVDD pins. When the chip enters Sleep mode the slave core can be configured to wake via the master-core reset; ensure the PPS (Peripheral Pin Select) registers are preserved in the master-config area to avoid unintended AVDD power-up. Power-on reset delay is typically ~6 ms.
Compliance Information
RoHS compliant per Microchip product page. AEC-Q100 qualification applies to the dsPIC33CH Auto Q-family variants, not to the -I industrial -M4 ordering code listed here. Verify with factory for -E variant automotive applications.
