DSPIC33CH128MP508-E/PT - Dual-Core 16-Bit DSC, 200MHz | Microchip
MPN: DSPIC33CH128MP508-E/PT β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.4 | $5.40 |
| 10 | $4.89 | $48.90 |
| 100 | $4.36 | $436.00 |
| 500 | $3.85 | $1,925.00 |
| 1,000 | $3.4 | $3,400.00 |
DSPIC33CH128MP508-E/PT Overview
A Digital Signal Controller (DSC) is a hybrid device that merges a microcontroller (MCU) with a digital signal processor (DSP). DSCs sit within the broader taxonomy: DSC -> microcontroller -> embedded processor -> semiconductor. Unlike a pure MCU, a DSC executes DSP operations in a single instruction cycle, while still providing peripherals (PWM, ADC, CAN FD, UART) and interrupt-driven control. This dual-core dsPIC33CH family extends that idea by adding a second independent DSC core on-chip for tasks like closed-loop control, housekeeping, or auxiliary math acceleration.
Key specifications include 152 KB Flash, 16 KB SRAM, dual cores up to 200 MHz, 8 DMA channels, 3 serial I/O modules, integrated CAN FD, a barrel shifter, and boundary scan support. High-resolution PWM, three operational amplifiers, and a 12-bit ADC suite make it ideal for switching power and motor control applications. The 80-pin TQFP provides ample GPIO for industrial and automotive designs while supporting surface-mount reflowed assembly.
The architecture uses a 16-bit modified Harvard core with a DSP engine, MAC, and zero-overhead loop hardware. Dual-core asymmetric processing allows one core to handle real-time control while the other runs communication stacks, custom DSP, or secondary feedback loops. The integrated peripherals and 24-bit instruction width reduce external component count.
Typical applications include digital switch-mode power supplies (PFC + LLC), sensorless and FOC motor drives, wireless charging transmitters, drone ESCs, Class-D audio amplifiers, and automotive sensor fusion. Industrial automation controllers also benefit from the CAN FD interface and dual-core flexibility.
When designing, ensure adequate decoupling with 100 nF + 1 uF ceramic capacitors close to each VDD/AVDD pin. Use a 4-layer PCB with a continuous ground plane to suppress PWM-induced switching noise. Master/slave inter-core communication uses Mailbox and SFR windowing; consult the device family datasheet for proper initialization sequences.
This page consolidates distributor pricing, drop-in alternative recommendations, and practical dual-core design notes not aggregated in a single manufacturer document.
Drop-in alternatives for DSPIC33CH128MP508-E/PT β 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 DSPIC33CH128MP508-E/PT (same form factor and footprint) β differing in ADC, High-Resolution PWM, Package, Program Memory (Flash).
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
DSPIC33CH128MP508-I/PT
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$5.25 / Unit
View Datasheet βDSPIC33CH128MP508-H/PT
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
DSPIC33CH128MP505-E/M4
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$4.5 / Unit
View Datasheet βDSPIC33CH128MP508-E/PT Maximum Ratings & Electrical Characteristics
| Architecture | Dual-Core 16-bit DSC (modified Harvard + DSP engine) |
| Core Count | 2 (Master + Slave DSC cores) |
| Maximum CPU Speed | 200 MIPS (200 MHz) |
| Program Memory (Flash) | 152 KB |
| RAM | 16 KB |
| Instruction Width | 24-bit |
| Operating Voltage | 3.0 V to 3.6 V |
| Operating Temperature | -40 C to +125 C (E = extended) |
| DMA Channels | 8 |
| Serial I/O Modules | 3 |
| CAN FD | Yes (Flexible Data rate CAN) |
| High-Resolution PWM | Yes |
| ADC | 12-bit integrated |
| Package | TQFP-80 (PT), 12x12 mm, 0.50 mm pitch |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
| Barrel Shifter | Yes |
| Boundary Scan | Yes (JTAG) |
DSPIC33CH128MP508-E/PT Pin Configuration
| Pin 1 | OSCI β Primary crystal oscillator input |
| Pin 2 | OSCO β Primary crystal oscillator output |
| Pin 3 | RP0 β Remappable I/O / PWM1H |
| Pin 4 | RP1 β Remappable I/O / PWM1L |
| Pin 5 | VDD β 3.3 V core supply |
| Pin 6 | VSS β Ground reference |
| Pin 7 | PWM2H β PWM output 2 high-side |
| Pin 8 | PWM2L β PWM output 2 low-side |
| Pin 9 | PWM3H β PWM output 3 high-side |
| Pin 10 | PWM3L β PWM output 3 low-side |
| Pin 11 | PWM4H β PWM output 4 high-side |
| Pin 12 | PWM4L β PWM output 4 low-side |
| Pin 13 | AVDD β Analog 3.3 V supply |
| Pin 14 | AVSS β Analog ground |
| Pin 15 | AN0 β Analog input 0 |
| Pin 16 | AN1 β Analog input 1 |
| Pin 17 | AN2 β Analog input 2 |
| Pin 18 | AN3 β Analog input 3 |
| Pin 19 | AN4 β Analog input 4 |
| Pin 20 | AN5 β Analog input 5 |
| Pin 21 | AN6 β Analog input 6 |
| Pin 22 | AN7 β Analog input 7 |
| Pin 23 | AN8 β Analog input 8 |
| Pin 24 | AN9 β Analog input 9 |
| Pin 25 | AN10 β Analog input 10 |
| Pin 26 | AN11 β Analog input 11 |
| Pin 27 | AN12 β Analog input 12 |
| Pin 28 | AN13 β Analog input 13 |
| Pin 29 | AN14 β Analog input 14 |
| Pin 30 | AN15 β Analog input 15 |
| Pin 31 | PWM5H β PWM output 5 high-side |
| Pin 32 | PWM5L β PWM output 5 low-side |
| Pin 33 | PWM6H β PWM output 6 high-side |
| Pin 34 | PWM6L β PWM output 6 low-side |
| Pin 35 | PWM7H β PWM output 7 high-side |
| Pin 36 | PWM7L β PWM output 7 low-side |
| Pin 37 | PWM8H β PWM output 8 high-side |
| Pin 38 | PWM8L β PWM output 8 low-side |
| Pin 39 | PWM9H β PWM output 9 high-side |
| Pin 40 | PWM9L β PWM output 9 low-side |
| Pin 41 | RP32 β Remappable I/O |
| Pin 42 | RP33 β Remappable I/O |
| Pin 43 | RP34 β Remappable I/O |
| Pin 44 | RP35 β Remappable I/O |
| Pin 45 | RP36 β Remappable I/O |
| Pin 46 | RP37 β Remappable I/O |
| Pin 47 | RP38 β Remappable I/O |
| Pin 48 | RP39 β Remappable I/O |
| Pin 49 | RP40 β Remappable I/O |
| Pin 50 | RP41 β Remappable I/O |
| Pin 51 | C1TX β CAN FD 1 transmit |
| Pin 52 | C1RX β CAN FD 1 receive |
| Pin 53 | U1TX β UART1 transmit |
| Pin 54 | U1RX β UART1 receive |
| Pin 55 | SDA1 β I2C1 data |
| Pin 56 | SCL1 β I2C1 clock |
| Pin 57 | SDO1 β SPI1 serial data out |
| Pin 58 | SDI1 β SPI1 serial data in |
| Pin 59 | SCK1 β SPI1 serial clock |
| Pin 60 | SS1 β SPI1 slave select |
| Pin 61 | TMS β JTAG test mode select |
| Pin 62 | TCK β JTAG test clock |
| Pin 63 | TDI β JTAG test data in |
| Pin 64 | TDO β JTAG test data out |
| Pin 65 | MCLR β Master clear reset |
| Pin 66 | VDD β 3.3 V core supply |
| Pin 67 | VSS β Ground reference |
| Pin 68 | PGEC1 β ICSP programming clock |
| Pin 69 | PGED1 β ICSP programming data |
| Pin 70 | PGEC2 β Slave core ICSP programming clock |
| Pin 71 | PGED2 β Slave core ICSP programming data |
| Pin 72 | RP58 β Remappable I/O |
| Pin 73 | RP59 β Remappable I/O |
| Pin 74 | RP60 β Remappable I/O |
| Pin 75 | RP61 β Remappable I/O |
| Pin 76 | RP62 β Remappable I/O |
| Pin 77 | RP63 β Remappable I/O |
| Pin 78 | RP64 β Remappable I/O |
| Pin 79 | RP65 β Remappable I/O |
| Pin 80 | RP66 β Remappable I/O |
Typical Applications
DSPIC33CH128MP508-E/PT is suitable for 6 applications: Digital Switch-Mode Power Supply (PFC + LLC), Field-Oriented Control (FOC) Motor Drive, Drone Electronic Speed Controller (ESC), Wireless Power Transmitter (Qi/WPC), Server Power Supply Unit (PSU), Automotive Sensor Fusion ECU.
Digital Switch-Mode Power Supply (PFC + LLC)
The DSPIC33CH128MP508-E/PT is ideally suited for digital SMPS control in PFC + LLC or totem-pole topologies. Its 200 MIPS per core capability, high-resolution PWM (250 ps resolution), and 12-bit ADC with dedicated Sample-and-Hold enable multi-loop digital control at switching frequencies up to 500 kHz. The dual-core architecture allows the Master core to handle the high-speed PFC control loop while the Slave core manages housekeeping, communication (UART/CAN FD), and secondary-side regulation. The high PSRR analog chain and fast ADC minimize conversion latency, which is critical for digital PFC achieving >0.99 power factor.
Recommended
Field-Oriented Control (FOC) Motor Drive
For 3-phase PMSM and ACIM FOC motor drives, the DSPIC33CH128MP508-E/PT provides the DSP throughput needed for sensorless FOC at speeds up to 30,000 RPM. The dedicated DSP engine with single-cycle MAC and zero-overhead loops executes Park/Clarke transforms, SVPWM modulation, and sliding-mode observers within microseconds. Dual cores split the workload between real-time current loop (Master) and speed/position loop with CAN FD communication (Slave). The integrated high-resolution PWM with 250 ps edge placement produces clean switching waveforms, reducing audible motor noise and torque ripple.
Recommended
Drone Electronic Speed Controller (ESC)
In drone BLDC ESC applications, the DSPIC33CH128MP508-E/PT's 200 MHz dual-core performance and high-resolution PWM deliver the response time needed for fast-throttle maneuvers and field-weakening operation. The compact 80-pin TQFP fits the tight mechanical envelope of a 4-in-1 ESC board. The integrated CAN FD enables real-time telemetry from the ESC to the flight controller, while the DMA-driven ADC achieves deterministic current sampling synchronized to PWM edges. Built-in op amps interface directly to low-side current shunts.
Recommended
Wireless Power Transmitter (Qi/WPC)
For resonant wireless power transmitters supporting the Qi or proprietary WPC standards, the DSPIC33CH128MP508-E/PT's dual cores and high-resolution PWM enable precise frequency tracking and load-step response. The Master core implements the resonant control loop with sub-microsecond cycle time, while the Slave core handles foreign object detection (FOD) algorithms and Qi protocol negotiation over I2C. The 12-bit ADC captures tank current and voltage waveforms for digital demodulation. CAN FD connectivity supports automotive wireless charging modules.
Recommended
Server Power Supply Unit (PSU)
In 80 PLUS Titanium server PSU designs, the DSPIC33CH128MP508-E/PT manages PFC + LLC + SR topology with high efficiency targets above 96%. The dual-core architecture runs the PFC voltage loop on the Master and the LLC + synchronous rectification on the Slave, sharing telemetry through Mailbox RAM. CAN FD or PMBus interfaces enable digital monitoring of input/output power, temperature, and fan speed. Hot-swap and black-box fault logging are handled in firmware. The 125 C extended temperature grade supports server ambient specifications.
Recommended
Automotive Sensor Fusion ECU
For automotive sensor modules integrating IMU, pressure, and position sensors, the DSPIC33CH128MP508-E/PT provides the dual-core performance needed for sensor fusion algorithms. The Master core runs the safety-critical sampling and CAN FD communication stack, while the Slave core executes extended Kalman filter (EKF) or particle filter fusion. The extended -40C to +125 C temperature range suits automotive underhood and chassis environments. Integrated op amps condition sensor signals directly, reducing BOM cost.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CH128MP508-E/PT β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CH128MP508-I/PT | DSPIC33CH128MP508-H/PT | DSPIC33CH128MP506-I/PT | DSPIC33CH128MP505-E/M4 | DSPIC33CH128MP208T-I/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-80 (PT) 12x12 mm | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-64 (PT) - DIFFERENT | TQFP-80 (PT) - same | TQFP-64 (PT) - DIFFERENT |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Count | 2 (Master + Slave) | 2 | 2 | 2 | 2 | 2 |
| Max CPU Speed | 200 MIPS | 200 MIPS | 200 MIPS | 200 MIPS | 200 MIPS | 200 MIPS |
| Flash Memory | 152 KB | 152 KB | 152 KB | 152 KB | 152 KB | 152 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Temperature Range | -40 C to +125 C (E grade) | -40 C to +85 C (I grade) | -40 C to +150 C (H grade) | -40 C to +85 C (I grade) | -40 C to +125 C (E grade) | -40 C to +85 C (I grade) |
| Pin Count | 80 | 80 | 80 | 64 | 80 | 64 |
| CAN FD | Yes | Yes | Yes | Yes | Yes | Yes |
| High-Resolution PWM | Yes (250 ps) | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- True dual-core DSC on a single die (vs Single-core dsPIC33EPxxx MCUs)
- High-resolution PWM at 250 ps resolution (vs DSPIC33EP128MC506)
- Integrated CAN FD interface (vs DSPIC33CH64MP506 (lower-density variant))
Design Notes
Estimated: At core speed of 200 MHz with both cores active, the DSPIC33CH128MP508-E/PT consumes roughly 200-400 mA from the 3.3 V VDD rail. Use a 100 nF X7R ceramic placed within 3 mm of each VDD pin, plus a single 10 uF bulk ceramic or tantalum capacitor at the regulator output. A separate AVDD/AVSS pair should be decoupled with 100 nF and 10 uF to isolate analog supply noise from the switching PWM outputs.
Use a 4-layer PCB with a continuous ground plane below the device for thermal dissipation and noise suppression. The 80-pin TQFP body is 12x12 mm with 0.50 mm pitch; route PWM signals on inner layers between VDD/GND planes to minimize radiated EMI. Keep ADC traces short and shielded by ground pour. Place crystal load capacitors (typically 18-22 pF) symmetrically within 3 mm of OSCI/OSCO.
Route high-speed PWM outputs and their complements (PWMxH/PWMxL) as differential pairs with matched lengths to within 1 mm to prevent duty-cycle distortion at high switching frequencies. Use 50 ohm controlled impedance if traces exceed 25 mm. Separate the analog ANx traces (inputs to ADC) from PWM traces by at least 3x the trace-to-trace spacing, with ground shielding recommended.
Estimated: Common pitfalls when designing with the DSPIC33CH128MP508-E/PT include (1) forgetting to initialize both cores - the Slave core must be released by the Master via firmware handshake before it executes code; (2) using 3.3 V supply below 3.0 V minimum, which causes unreliable Flash programming; (3) skipping the MCLR reset capacitor (typically 10 nF) which can cause spurious resets during PWM switching; (4) configuring high-resolution PWM with mismatched master clock source. Consult family datasheet section 7 (Slave Core Configuration) for proper dual-core bring-up.
Compliance Information
RoHS compliant per Microchip product page. AEC-Q100 not qualified in standard grade - request automotive variant from Microchip. Halogen-free status not confirmed in provided data.
