DSPIC33EP512MC506-I/PT - 70 MIPS 16-bit DSC, 512KB Flash | Microchip
MPN: DSPIC33EP512MC506-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.62 | $4.62 |
| 10 | $4.3 | $43.00 |
| 100 | $3.95 | $395.00 |
| 500 | $3.2 | $1,600.00 |
| 1,000 | $2.38 | $2,380.00 |
DSPIC33EP512MC506-I/PT Overview
A digital signal controller combines the computational power of a digital signal processor with the peripheral integration and control architecture of a microcontroller. Within the power-management hierarchy of embedded systems, the DSC sits between a general-purpose MCU and a dedicated DSP, making it the natural choice for closed-loop control loops that require both fast multiply-accumulate (MAC) operations and deterministic I/O behavior. The dsPIC33E family extends this concept with dedicated motor-control peripherals.
Key features of this part include the 70 MIPS dsPIC DSC core with DSP instruction support (single-cycle MAC, dual operand fetch), up to 18 channels of 10-bit ADC sampling at 1.1 Msps (4 Msps when paired), and a dedicated Motor Control PWM (MCPWM) module with complementary outputs, dead-time insertion, and fault protection, plus Quadrature Encoder Interface (QEI) inputs for position feedback.
Technical depth: the dsPIC33E core uses a modified Harvard architecture with a 16-bit data path, 24-bit instruction words, and a 16x16 fractional/integer multiplier. Peripheral integration includes multiple UART, SPI, and I2C ports, a Peripheral Pin Select (PPS) scheme that routes digital peripherals to selectable pins, and an internal FRC oscillator with PLL allowing full-speed operation without an external crystal.
Typical applications include precision brushless DC (BLDC) and permanent-magnet synchronous motor (PMSM) drives, digital power supplies and PFC stages, solar inverters, and industrial automation control boards. The MCPWM plus high-speed ADC combination directly targets these switch-mode control loops.
Design consideration: at 70 MIPS the core is sensitive to supply integrity; use the dedicated VCAP/VDDCORE stabilizing capacitor per the datasheet and place decoupling on every VDD/VSS pair. Budget interrupt latency for the control-loop ISR at high ADC trigger rates.
This page synthesizes distributor pricing, same-family drop-in alternatives, pinout guidance, and practical motor-control design notes not found in a single manufacturer document.
Drop-in alternatives for DSPIC33EP512MC506-I/PT — 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 DSPIC33EP512MC506-I/PT (same form factor and footprint) — differing in Package, Operating Temperature, Core Architecture, Packaging, Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP512MC506-E/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP512MC504T-E/TL
✅ Drop-In✓ In Stock
$5.25 / Unit
View Datasheet →DSPIC33EP256MC504-I/PT
✅ Drop-In✓ In Stock
$4.6 / Unit
View Datasheet →DSPIC33EP256MC504T-I/TL
✅ Drop-In✓ In Stock
$3.32 / Unit
View Datasheet →DSPIC33EP512GM306T-I/PT
✅ Drop-In✓ In Stock
$5.31 / Unit
View Datasheet →DSPIC33EP512GP806T-E/PT
✅ Drop-In✓ In Stock
$8.62 / Unit
View Datasheet →DSPIC33EP512MC506-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC DSC core |
| Maximum CPU Speed | 70 MIPS |
| Flash Memory | 512 KB |
| SRAM | 48 KB |
| Supply Voltage | 3.0 V to 3.6 V (3.3 V nominal) |
| Motor Control PWM | MCPWM with complementary outputs, dead time, fault inputs |
| Quadrature Encoder Interface | Yes (QEI) |
| ADC Resolution | 10-bit |
| Package | 64-pin TQFP (10x10 mm, PT) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (I grade) |
| Communication Interfaces | UART, SPI, I2C (multiple ports) |
| In-Circuit Programming | ICSP (2-wire) via MPLAB |
| RoHS Status | Compliant |
DSPIC33EP512MC506-I/PT Pin Configuration
| Pin 1 | MCLR — Master clear reset / programming voltage input |
| Pin 2 | AN0/VREF+/RB0 — Analog input 0 / ADC positive reference / PORTB0 |
| Pin 3 | AN1/VREF-/RB1 — Analog input 1 / ADC negative reference / PORTB1 |
| Pin 4 | AN2/RB2 — Analog input 2 / PORTB2 |
| Pin 5 | AN3/RB3 — Analog input 3 / PORTB3 |
| Pin 6 | AN4/RB4 — Analog input 4 / PORTB4 |
| Pin 7 | AN5/RB5 — Analog input 5 / PORTB5 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI — Crystal oscillator input / external clock input |
| Pin 10 | OSC2/CLKO/RC15 — Crystal oscillator output / clock output / PORTC15 |
| Pin 11 | VDD — Positive supply (3.0-3.6 V) |
| Pin 12 | AN8/RC1 — Analog input 8 / PORTC1 |
| Pin 13 | AN9/RC0 — Analog input 9 / PORTC0 |
| Pin 14 | AN10/RC13 — Analog input 10 / PORTC13 |
| Pin 15 | VSS — Ground reference |
| Pin 16 | AN11/RC14 — Analog input 11 / PORTC14 |
| Pin 17 | VDD — Positive supply |
| Pin 18 | AN12/RB8 — Analog input 12 / PORTB8 |
| Pin 19 | AN13/RB9 — Analog input 13 / PORTB9 |
| Pin 20 | VCAP/VDDCORE — Core regulator stabilizing capacitor - external capacitor required |
| Pin 21 | RG6/TCK — PORTG6 / JTAG test clock |
| Pin 22 | RG7/TDI — PORTG7 / JTAG test data input |
| Pin 23 | RG8/TDO — PORTG8 / JTAG test data output |
| Pin 24 | RG9/TMS — PORTG9 / JTAG test mode select |
| Pin 25 | AN14/RB10 — Analog input 14 / PORTB10 |
| Pin 26 | AN15/RB11 — Analog input 15 / PORTB11 |
| Pin 27 | VDD — Positive supply |
| Pin 28 | VSS — Ground reference |
| Pin 29 | RE0/PWM1H — PORTE0 / Motor PWM1 high output |
| Pin 30 | RE1/PWM1L — PORTE1 / Motor PWM1 low output |
| Pin 31 | RE2/PWM2H — PORTE2 / Motor PWM2 high output |
| Pin 32 | RE3/PWM2L — PORTE3 / Motor PWM2 low output |
| Pin 33 | RE4/PWM3H — PORTE4 / Motor PWM3 high output |
| Pin 34 | RE5/PWM3L — PORTE5 / Motor PWM3 low output |
| Pin 35 | RE6/PWM4H — PORTE6 / Motor PWM4 high output |
| Pin 36 | RE7/PWM4L — PORTE7 / Motor PWM4 low output |
| Pin 37 | VDD — Positive supply |
| Pin 38 | VSS — Ground reference |
| Pin 39 | RD0/PWM5H — PORTD0 / Motor PWM5 high output |
| Pin 40 | RD1/PWM5L — PORTD1 / Motor PWM5 low output |
| Pin 41 | RD2/PWM6H — PORTD2 / Motor PWM6 high output |
| Pin 42 | RD3/PWM6L — PORTD3 / Motor PWM6 low output |
| Pin 43 | RD4/FLTA — PORTD4 / MCPWM fault A input |
| Pin 44 | RD5 — PORTD5 (PPS-mappable digital I/O) |
| Pin 45 | RD6 — PORTD6 (PPS-mappable digital I/O) |
| Pin 46 | AVDD — Analog supply for ADC |
| Pin 47 | AVSS — Analog ground |
| Pin 48 | RD7 — PORTD7 (PPS-mappable digital I/O) |
| Pin 49 | RD8 — PORTD8 (PPS-mappable digital I/O) |
| Pin 50 | RD9 — PORTD9 (PPS-mappable digital I/O) |
| Pin 51 | RD10 — PORTD10 (PPS-mappable digital I/O) |
| Pin 52 | RD11 — PORTD11 (PPS-mappable digital I/O) |
| Pin 53 | VDD — Positive supply |
| Pin 54 | VSS — Ground reference |
| Pin 55 | RB12 — PORTB12 (analog-capable, PPS-mappable) |
| Pin 56 | RB13 — PORTB13 (analog-capable, PPS-mappable) |
| Pin 57 | RB14 — PORTB14 (analog-capable, PPS-mappable) |
| Pin 58 | RB15 — PORTB15 (analog-capable, PPS-mappable) |
| Pin 59 | RD12/SCL1 — PORTD12 / I2C1 clock (PPS-mappable) |
| Pin 60 | RD13/SDA1 — PORTD13 / I2C1 data (PPS-mappable) |
| Pin 61 | RG0/U1TX — PORTG0 / UART1 transmit (PPS-mappable) |
| Pin 62 | RG1/U1RX — PORTG1 / UART1 receive (PPS-mappable) |
| Pin 63 | RG2/INT0 — PORTG2 / external interrupt 0 |
| Pin 64 | RG3 — PORTG3 (PPS-mappable digital I/O) |
Typical Applications
DSPIC33EP512MC506-I/PT is suitable for 6 applications: BLDC / PMSM Motor Drives, Digital Power Supplies and PFC, Solar Inverters and Energy Systems, Industrial Automation and Robotics, Electric Vehicle Auxiliary Systems, Embedded Sensing and IoT Edge Nodes.
BLDC / PMSM Motor Drives
The DSPIC33EP512MC506-I/PT is Microchip's flagship choice for precision 3-phase motor control, pairing the 70 MIPS dsPIC33E core with a dedicated MCPWM module offering complementary outputs, programmable dead-time insertion, and hardware fault shutdown. A field-oriented control (FOC) loop runs comfortably at 10-20 kHz inside the 70 MIPS budget, while the QEI module decodes encoder position feedback and the 10-bit ADC synchronizes phase-current sampling to PWM centers to eliminate switching-ripple error. Typical boards place the DSC between an encoder input chain and gate drivers such as the MIC4104 or gate-driver ICs driving a 3-phase MOSFET bridge. The hardware dead-time guarantee eliminates software jitter that would otherwise cause shoot-through at high PWM frequencies.
Recommended
Digital Power Supplies and PFC
Switch-mode power supplies, LLC converters, and PFC stages benefit from the DSC's center-aligned MCPWM and ADC synchronized sampling. The 70 MIPS core executes average-current-mode or voltage-mode control laws with 16-bit fractional MAC arithmetic in a few microseconds, far below a 100 kHz switching period. Complementary PWM outputs with dead-time directly drive half-bridge topologies, and the fault inputs provide cycle-by-cycle current limiting without CPU intervention. Typical designs trigger the ADC at PWM counter zero to sample inductor current at the valley, minimizing ripple-induced measurement error. Compared to fixed-function controller ICs, the dsPIC33EP adds telemetry, adaptive tuning, and protocol reporting over UART/I2C at similar BOM cost.
Recommended
Solar Inverters and Energy Systems
Grid-tied microinverter and solar charge-controller designs use the DSPIC33EP512MC506-I/PT to run MPPT algorithms plus DC-AC modulation concurrently. The 512 KB Flash accommodates MPPT search, grid synchronization (PLL), protection state machines, and communication stacks in one image, while 48 KB SRAM buffers sampled waveforms for harmonic analysis. The MCPWM module generates the PWM pattern for the power stage and supports complementary switching with dead time required by transformer-isolated topologies. UART or SPI links to metering ICs report energy data; hardware fault inputs enforce rapid shutdown on overcurrent. The industrial -40C to +85C temperature grade suits outdoor combiner-box and inverter enclosures.
Recommended
Industrial Automation and Robotics
In factory automation nodes, the DSC acts as a real-time motion or process controller. Peripheral Pin Select lets engineers route multiple UART, SPI, and I2C ports to any of dozens of pins, simplifying multi-sensor board layouts without mux hardware. The 70 MIPS core handles PID cascades, trajectory generation, and protocol parsing simultaneously; DSP MAC instructions accelerate FIR filters on noisy encoder or analog feedback. QEI inputs interface directly with incremental encoders on servo axes. Connectivity to PLC backplanes via CAN (through an external transceiver) or Modbus over UART keeps integration simple. Watchdog, brown-out, and code protection features meet industrial reliability expectations.
Recommended
Electric Vehicle Auxiliary Systems
Beyond traction inverters, EV subsystems - pumps, blowers, e-mirror drives, and DC-DC converters - need robust motor control at low cost. The -40C to +85C industrial grade and 3.3 V supply with wide oscillator tolerance fit typical 12 V auxiliary boards, where a buck converter drops the rail for the DSC. The MCPWM fault inputs connect directly to comparator-based overcurrent latches for fast hardware protection, and QEI handles position feedback in throttle and HVAC flap actuators. Firmware FOC runs at several kHz switching frequency on the 70 MIPS core. Designers requiring under-hood -40C to +125C operation should select the E-temperature-grade variants of the same die instead.
Recommended
Embedded Sensing and IoT Edge Nodes
The DSC's DSP engine makes it an efficient edge signal-processing node: 16x16 MAC operations filter accelerometer, microphone, or current-sensor streams in real time before results are shipped over UART/SPI/I2C to a gateway. The internal FRC oscillator with PLL enables crystal-less designs for cost-sensitive nodes, while Peripheral Pin Select lets one PCB footprint serve multiple sensor variants. 512 KB Flash stores feature-extraction code plus over-the-air update staging, and 48 KB SRAM buffers FFT windows. Compared with a general-purpose 8-bit PIC plus external DSP, this single-chip approach reduces BOM count and firmware complexity while keeping deterministic control-loop timing for any local actuators.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP512MC506-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP512MC506-E/PT | DSPIC33EP512MC504T-E/TL | DSPIC33EP256MC504-I/PT | DSPIC33EP512GM306T-I/PT | DSPIC33EP512GP806T-E/PT |
|---|---|---|---|---|---|---|
| Package | 64-TQFP (10x10, PT) | 64-TQFP (10x10, PT) - same | 64-TQFP (10x10, TL) - same size, different pin map variant | 64-TQFP (10x10, PT) - same | 64-TQFP (10x10, PT) - same | 64-TQFP (10x10, PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Flash Memory | 512 KB | 512 KB | 512 KB | 256 KB | 512 KB | 512 KB |
| SRAM | 48 KB | 48 KB | 48 KB | 48 KB | 48 KB | 48 KB |
| Operating Temperature | -40C to +85C (I) | -40C to +125C (E) | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +125C (E) |
| Motor Control PWM (MCPWM) + QEI | Yes | Yes | Yes | Yes | No (GM family: USB/connectivity emphasis) | No (GP family: CAN/CTMU emphasis) |
Key Differentiators
- Dedicated Motor Control PWM with hardware dead time and fault shutdown (vs DSPIC33EP512GP806T-E/PT)
- Extended temperature option on the identical die (vs DSPIC33EP512MC506-E/PT)
- Double the code space at similar cost vs 256 KB sibling (vs DSPIC33EP256MC504-I/PT)
Design Notes
The VCAP/VDDCORE pin (pin 20) must have its dedicated stabilizing capacitor to ground, sized per the datasheet electrical characteristics section - typically a low-ESR ceramic in the 10 uF class plus a smaller 0.1 uF in parallel. Omitting it or using excessive ESR causes core brown-out at 70 MIPS, showing up as random resets under interrupt load. Place the capacitor within 2-3 mm of the pin with a direct via to the ground plane. Estimated: with core current of tens of mA at 3.3 V, total board power is well under 0.5 W, so no thermal relief is required.
Place a 0.1 uF ceramic decoupling capacitor at every VDD/VSS pair (six pairs on this 64-pin package) plus one bulk 10 uF near the supply entry. Route MCPWM outputs (RE0-RE7, RD0-RD3) to gate drivers as short, matched pairs to preserve the hardware dead-time relationship; asymmetric trace lengths can unbalance effective dead time by nanoseconds, which matters at 100+ kHz switching. Keep AVDD/AVSS on a quiet analog island with a ferrite or RC filter from the digital rail, and route ADC sense traces away from PWM switching nodes.
Peripheral Pin Select (PPS) locks after configuration: writing RPINR/RPOR registers is blocked unless the UNLOCK sequence (0x55/0xAA to PPS register window) is executed first - a very common bring-up bug causing peripherals to appear dead. Second, MCPWM fault inputs (FLTA) default to active states that can gate PWM outputs off if left floating; tie or configure them deliberately. Third, when porting from dsPIC33F to 33EP, note the ADC and output-compare register layouts differ - re-run XC16 compilation and review the migration app note rather than reusing binary objects.
At 70 MIPS, keep the external crystal (if used) within 5 mm of OSC1/OSC2 with guard ground; alternatively use the internal FRC+PLL for crystal-less designs, accepting ppm-level frequency tolerance unsuitable for CAN or precise UART baud rates. For encoder QEI inputs, add series termination or RC filtering if encoder cabling exceeds ~30 cm, since QEI edges are counted in hardware and glitches become position error. Test points on PWM complementary pairs ease dead-time verification with a dual-channel scope during commissioning.
Compliance Information
RoHS compliant and lead-free per DigiKey/Mouser/LCSC listings. Not an automotive AEC-Q100 qualified ordering code; REACH and halogen-free status should be confirmed on the distributor compliance certificate for the relevant date code.
