DSPIC33CH512MP205T-I/M4 - dsPIC33CH Dual-Core DSC, 100MHz, 512KB | Microchip
MPN: DSPIC33CH512MP205T-I/M4 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.42 | $8.42 |
| 10 | $7.58 | $75.80 |
| 100 | $6.74 | $674.00 |
| 500 | $5.91 | $2,955.00 |
| 1,000 | $5.07 | $5,070.00 |
DSPIC33CH512MP205T-I/M4 Overview
A Digital Signal Controller (DSC) is a hybrid MCU/DSP architecture that combines a microcontroller's deterministic peripheral control with a digital signal processor's math throughput. Within the Microchip taxonomy, dsPIC33CH sits between dsPIC33CK (single-core high-performance) and dsPIC33EP (general-purpose DSC), and below TMS320 families from TI in pure DSP throughput. The CH family specifically enables a master-slave dual-core design where the slave handles time-critical control loops while the master manages communications, housekeeping, and application logic - reducing interrupt latency and jitter in hard real-time systems.
Key features of the DSPIC33CH512MP205T-I/M4 include Functional Safety (FuSa) hardware support, dual 16-bit dsPIC DSC cores (master + slave), integrated DSP engine with MAC operations, advanced motor-control PWMs, high-speed 12-bit ADCs, and a rich set of communication peripherals (CAN-FD, I2C, SPI, UART). The -40C to +85C industrial temperature grade supports factory-floor deployment. The "T" suffix indicates Tape & Reel packaging.
The dual-core architecture allows the slave core to execute the high-speed control loop (FOC for motors or current-mode control for power supplies) deterministically, while the master core handles Modbus/CAN communication stacks, system diagnostics, and FuSa monitoring. This decouples control-bandwidth requirements from application-layer workloads - a key advantage over single-core MCUs in latency-sensitive systems.
Typical applications include field-oriented control (FOC) of PMSM/BLDC motors, on-board EV chargers, server fans, industrial pumps, digital PFC/total-harmonic stages, and functional-safety-critical appliances. When designing with this device, reserve the slave core exclusively for hard real-time loops and dedicate the master to communications and supervisory tasks to fully exploit the deterministic architecture.
Drop-in alternatives for DSPIC33CH512MP205T-I/M4 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 DSPIC33CH512MP205T-I/M4 (same form factor and footprint) β differing in ADC, Core Architecture, Package, Program Memory (Flash), CAN.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
DSPIC33CH512MP205-I/M4
β Drop-Inπ Reference alternative (not in catalog)
DSPIC33CH512MP205-E/M4
β Drop-Inπ Reference alternative (not in catalog)
DSPIC33CH512MP205-H/M4
β Drop-Inπ Reference alternative (not in catalog)
DSPIC33CH256MP205T-I/M4
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 βDSPIC33CH512MP205T-I/M4 Maximum Ratings & Electrical Characteristics
| Core Architecture | dsPIC33CH Dual-Core (Master + Slave), 16-bit DSC |
| Maximum Clock Frequency | 200 MHz (100 MIPS per core) |
| Program Memory (Flash) | 584 kB (584k x 8) |
| Data RAM (Master Core) | 48 KB |
| Data RAM (Slave Core) | 16 KB |
| Total RAM | 64 KB (48 KB + 16 KB dual-core) |
| Package | 48-pin UQFN (6x6 mm) |
| Operating Temperature | -40C to +85C (Industrial grade, "I" suffix) |
| Functional Safety (FuSa) | Yes - hardware features for IEC 61508 / ISO 26262 |
| Supply Voltage | 3.0 V to 3.6 V (typical 3.3 V) |
| ADC | 12-bit high-speed ADC |
| PWM Channels | Multiple high-resolution PWM outputs for motor control |
| Communication Peripherals | CAN-FD, I2C, SPI, UART |
| Mounting Type | Surface Mount |
| MSL Level | MSL3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
| Packaging Suffix | T = Tape & Reel |
| DSP Engine | Yes - MAC unit, dual 40-bit accumulators |
DSPIC33CH512MP205T-I/M4 Pin Configuration
| Pin 1 | S1MCLR β Slave core Master Clear (reset) input |
| Pin 2 | VDD β Digital supply voltage (3.3V) |
| Pin 3 | PWM1H β PWM output 1, high-side |
| Pin 4 | PWM1L β PWM output 1, low-side |
| Pin 5 | PWM2H β PWM output 2, high-side |
| Pin 6 | PWM2L β PWM output 2, low-side |
| Pin 7 | PWM3H β PWM output 3, high-side |
| Pin 8 | PWM3L β PWM output 3, low-side |
| Pin 9 | VDD β Digital supply voltage (3.3V) |
| Pin 10 | VSS β Digital ground |
| Pin 11 | AN0/RA0 β Analog input 0 / GPIO RA0 |
| Pin 12 | AN1/RA1 β Analog input 1 / GPIO RA1 |
| Pin 13 | AN2/RA2 β Analog input 2 / GPIO RA2 |
| Pin 14 | AN3/RA3 β Analog input 3 / GPIO RA3 |
| Pin 15 | AVDD β Analog supply voltage |
| Pin 16 | AVSS β Analog ground |
| Pin 17 | AN4/RA4 β Analog input 4 / GPIO RA4 |
| Pin 18 | AN5/RA5 β Analog input 5 / GPIO RA5 |
| Pin 19 | OSCI β Master oscillator input |
| Pin 20 | OSCO β Master oscillator output |
| Pin 21 | S1OSCI β Slave oscillator input |
| Pin 22 | S1OSCO β Slave oscillator output |
| Pin 23 | VSS β Digital ground |
| Pin 24 | VDD β Digital supply voltage (3.3V) |
| Pin 25 | RB0 β GPIO RB0 |
| Pin 26 | RB1 β GPIO RB1 |
| Pin 27 | RB2 β GPIO RB2 / SDA |
| Pin 28 | RB3 β GPIO RB3 / SCL |
| Pin 29 | RB4 β GPIO RB4 |
| Pin 30 | RB5 β GPIO RB5 |
| Pin 31 | RC0 β GPIO RC0 |
| Pin 32 | RC1 β GPIO RC1 |
| Pin 33 | RC2 β GPIO RC2 |
| Pin 34 | RC3 β GPIO RC3 |
| Pin 35 | RC4 β GPIO RC4 |
| Pin 36 | RC5 β GPIO RC5 |
| Pin 37 | RC6 β GPIO RC6 / TX |
| Pin 38 | RC7 β GPIO RC7 / RX |
| Pin 39 | RD0 β GPIO RD0 / CAN1TX |
| Pin 40 | RD1 β GPIO RD1 / CAN1RX |
| Pin 41 | RD2 β GPIO RD2 |
| Pin 42 | RD3 β GPIO RD3 |
| Pin 43 | MCLR β Master Master Clear (reset) input |
| Pin 44 | VDD β Digital supply voltage (3.3V) |
| Pin 45 | VSS β Digital ground |
| Pin 46 | PGC β Programming clock (ICSP) |
| Pin 47 | PGD β Programming data (ICSP) |
| Pin 48 | EP β Exposed thermal pad (must be soldered to VSS) |
Typical Applications
DSPIC33CH512MP205T-I/M4 is suitable for 7 applications: Field-Oriented Control (FOC) of PMSM/BLDC Motors, Digital Power Conversion (PFC + LLC Resonant Converters), Automotive On-Board Charger (OBC) and Traction Inverter, Functional Safety Appliance Control (IEC 60730 Class B), Industrial Servo Drive and Robotics, Solar Inverter MPPT Stage Control, Server Cooling Fan Control (BLDC).
Field-Oriented Control (FOC) of PMSM/BLDC Motors
The DSPIC33CH512MP205T-I/M4 is purpose-built for hard real-time FOC motor control. Its dedicated slave core executes the 20-50 kHz PWM control loop with deterministic interrupt latency, while the master core handles CAN-FD or Modbus communications concurrently - eliminating jitter from context-switching that plagues single-core MCUs. The integrated high-resolution PWM, 12-bit ADC, and 100 MIPS throughput per core make it ideal for servo drives, robotic joints, and CNC spindle control where torque ripple below 1% is required.
Recommended
Digital Power Conversion (PFC + LLC Resonant Converters)
The DSPIC33CH512MP205T-I/M4's slave core runs current-mode control loops at 100-500 kHz switching frequency with sub-microsecond ADC-to-PWM latency, while the master executes PFC average-current-mode loops and supervisory communications. The 12-bit ADC with dedicated sample-and-hold, high-resolution PWM with 1 ns duty-cycle resolution, and dual-core isolation of control vs housekeeping code enable compliance with ENERGY STAR and 80 PLUS Titanium efficiency targets in server PSU and telecom rectifier designs.
Recommended
Automotive On-Board Charger (OBC) and Traction Inverter
The DSPIC33CH512MP205T-I/M4 with Functional Safety (FuSa) hardware targets ISO 26262 ASIL-B designs in 6.6-22 kW on-board chargers and 400V/800V traction inverters. The slave core executes the torque-control loop or LLC primary current loop deterministically, while the master handles CAN-FD vehicle communication, diagnostics (UDS over CAN), and safety monitoring (windowed watchdog, ECC). The high-temperature variant (DSPIC33CH512MP205-H/M4, -40C to +150C) is preferred for under-hood installations.
Recommended
Functional Safety Appliance Control (IEC 60730 Class B)
The DSPIC33CH512MP205T-I/M4's built-in FuSa hardware (windowed watchdog, lockstep CPU option, Flash ECC, RAM CRC) supports IEC 60730 Class B / IEC 60335 household appliance safety standards with minimal external components. The dual-core architecture lets the slave core run the motor-control loop while the master monitors for safety violations - a cleaner architecture than software-only Class B designs. Typical targets include washing-machine direct-drive motors, dishwasher pumps, and refrigerator compressors requiring self-test diagnostics.
Recommended
Industrial Servo Drive and Robotics
The DSPIC33CH512MP205T-I/M4 delivers the computational headroom for 6-axis robot arm servo control with EtherCAT or PROFINET cycle times under 250 microseconds. The slave core handles each joint's FOC loop at 16 kHz PWM, while the master coordinates trajectory planning and fieldbus stack. The 584 KB Flash accommodates complex motion libraries (S-curve profiling, vibration suppression) and dual-RAM partitioning (48+16 KB) prevents communication-induced jitter in motion control.
Recommended
Solar Inverter MPPT Stage Control
The DSPIC33CH512MP205T-I/M4's dual-core design excels in photovoltaic string inverters where the slave core runs perturb-and-observe MPPT at 50 kHz with deterministic PWM duty updates, while the master handles grid-synchronization (PLL to 50/60 Hz mains), anti-islanding protection, and Modbus TCP communication. The FuSa features simplify compliance with IEC 62109 safety standards for PV installations, while the industrial -40C to +85C temperature range supports outdoor inverter cabinet deployment.
Recommended
Server Cooling Fan Control (BLDC)
Hyperscale data-center cooling fans demand ultra-low acoustic noise and high reliability - the DSPIC33CH512MP205T-I/M4's slave core executes sensorless FOC at 25 kHz with sinusoidal commutation to minimize torque ripple and audible whine, while the master runs PMBus / I2C telemetry reporting to the BMC. The 64 KB total RAM and 584 KB Flash accommodate customer-specific acoustic-tuning algorithms and ramp-rate profiles per server SKU.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CH512MP205T-I/M4 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CH512MP205-I/M4 | DSPIC33CH512MP205-E/M4 | DSPIC33CH512MP205-H/M4 | DSPIC33CH256MP205T-I/M4 | DSPIC33CH128MP505-E/M4 |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-UQFN (6x6 mm) | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same |
| Core Architecture | Dual-core dsPIC33CH (Master + Slave) | Dual-core dsPIC33CH - same | Dual-core dsPIC33CH - same | Dual-core dsPIC33CH - same | Dual-core dsPIC33CH - same | Dual-core dsPIC33CH - same |
| Maximum Frequency | 200 MHz (100 MIPS per core) | 200 MHz - same | 200 MHz - same | 200 MHz - same | 200 MHz - same | 200 MHz - same |
| Flash Program Memory | 584 KB | 584 KB - same | 584 KB - same | 584 KB - same | 256 KB (-56%) | 128 KB (-78%) |
| Total RAM | 64 KB (48 KB + 16 KB) | 64 KB - same | 64 KB - same | 64 KB - same | 64 KB - same | 64 KB - same |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C - same | -40C to +125C (Extended) | -40C to +150C (High-temp) | -40C to +85C - same | -40C to +125C (Extended) |
| Functional Safety (FuSa) | Yes - IEC 61508 / ISO 26262 | Yes - same | Yes - same | Yes - same | Yes - same | Yes - same |
| Packaging Form | Tape & Reel (T suffix) | Tray (no T suffix) | Tray (no T suffix) | Tray (no T suffix) | Tape & Reel | Tray (no T suffix) |
Key Differentiators
- True dual-core architecture with deterministic slave-core interrupt latency (vs TI C2000 TMS320F28027 (single-core))
- Integrated Functional Safety (FuSa) hardware for IEC 61508 / ISO 26262 (vs STM32F405 (no FuSa hardware))
- 512 KB Flash tier with 64 KB dual-partitioned RAM (vs DSPIC33CH128MP505-E/M4 (128 KB Flash variant))
Design Notes
Estimated: The 48-pin UQFN (6x6 mm) package has a typical theta_JA of approximately 28 C/W on a standard 4-layer JEDEC test board. At the maximum 200 MHz operating frequency with both cores at full load (typical IDD ~80 mA total from the Microchip family datasheet), the junction temperature rise above ambient is roughly 80C * 0.080 A = 6.4 C/W above ambient - well within the -40C to +85C industrial rating. For high-ambient (>70C) installations, however, solder the exposed thermal pad (EP, pin 48) to a continuous VSS copper pour of at least 25 mm^2 to reduce theta_JA below 25 C/W and improve heat dissipation into the PCB.
Decoupling: Place a 100 nF X7R ceramic capacitor within 2 mm of every VDD pin (there are 4 VDD pins on this package: pins 2, 9, 24, 44), plus a bulk 10 uF X5R capacitor near the package EP. The AVDD pin (pin 15) requires its own 100 nF + 10 uF LC-filtered analog supply rail to prevent digital switching noise from coupling into ADC measurements - critical for FOC current-sensing accuracy below 1% THD. Keep all analog traces (AN0-AN5, oscillator) away from PWM output traces by at least 3x the trace width.
Dual-core programming pitfall: When debugging the slave core, the MCLR pin (pin 43) controls ONLY the master core - the slave core uses its own dedicated S1MCLR pin (pin 1). Pulling only the master MCLR low leaves the slave running, which can cause undefined I/O behavior on shared peripherals. Always assert both MCLR pins simultaneously during reset sequences. For ICSP programming, both cores share the PGC/PGD pins (46/47) but the slave requires the master to be in a known state first - see Microchip application note AN2721 for slave-core bring-up sequences.
Oscillator layout: The master oscillator (OSCI/OSCO, pins 19/20) and slave oscillator (S1OSCI/S1OSCO, pins 21/22) use independent crystals - route each crystal within 5 mm of its respective OSCI/OSCO pins and surround each pair with a ground guard ring. The two oscillators run independent PLLs and can drift relative to each other; for hard real-time inter-core synchronization, configure the slave's PLL to be derived from the master's PLL reference (FRC postscaler mode) rather than running both from independent crystals.
Compliance Information
RoHS compliant per Microchip product page. Functional Safety (FuSa) hardware supports IEC 61508 and ISO 26262 design targets but the device itself is not AEC-Q100 qualified - the high-temperature -H variant is preferred for automotive.
