DSPIC33EP512GM304-I/PT - 16-Bit 70 MIPS DSC 512KB Flash | Microchip
MPN: DSPIC33EP512GM304-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $10.28 | $10.28 |
| 10 | $9.6 | $96.00 |
| 100 | $8.9 | $890.00 |
| 500 | $8.2 | $4,100.00 |
| 1,000 | $7.6 | $7,600.00 |
DSPIC33EP512GM304-I/PT Overview
A digital signal controller combines the computational strengths of a microcontroller (MCU) with the DSP capabilities of a digital signal processor in a single chip. Within the power-management hierarchy of embedded systems, a DSC sits between general-purpose MCUs and dedicated DSPs, making it the preferred choice when real-time control loops - such as field-oriented motor control or digital power conversion - demand multiply-accumulate throughput alongside standard MCU peripherals like UART, SPI, I2C, and CAN.
Key differentiating specifications of this device include the 70 MIPS core executing at 3.3V, 512KB of self-programmable flash supporting in-field firmware updates, dual CAN 2.0B modules, four operational amplifiers (OpAmps) integrated on-chip, and rich motor-control peripherals: 12 PWM channels, four input capture/output compare units, and two quadrature encoder interface (QEI) modules for closed-loop servo feedback.
Architecturally, the dsPIC33E core uses a modified Harvard pipeline with a 24-bit instruction word, hardware DSP multiply-accumulate (MAC) unit, DO and REPEAT loop instructions, and a flexible DMA controller that offloads data movement between peripherals and RAM - critical for sustaining high sample-rate control loops without CPU overhead. The integrated op-amps and 12-bit ADC with simultaneous multi-channel sampling reduce external analog component count in inverter designs.
Typical applications include brushless DC and PMSM motor drives, digital power supplies and solar inverters, sensor signal conditioning in industrial automation, and general embedded control requiring DSP math. The two QEI interfaces directly accept encoder inputs for dual-axis motion control.
Design consideration: the device is supplied from a 3.3V rail; ensure decoupling capacitors on all VDD pins and a stable AVDD supply for ADC accuracy, and verify MCLR/VPP programming requirements with PICkit or ICD tools.
This page synthesizes distributor pricing from DigiKey, Mouser and LCSC, verified drop-in alternatives within the dsPIC33EP family, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP512GM304-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 DSPIC33EP512GM304-I/PT (same form factor and footprint) — differing in Core Architecture, Package, Operating Temperature, Program Memory (Flash), RAM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP512GM604-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP128GM304-I/PT
✅ Drop-In✓ In Stock
$4.2 / Unit
View Datasheet →DSPIC33EP256MC504-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.6 / Unit
View Datasheet →DSPIC33EP256GP504-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.68 / Unit
View Datasheet →DSPIC33EP32GP504T-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.15 / Unit
View Datasheet →DSPIC33EP512GM304-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC DSC |
| Maximum Clock / Performance | 70 MIPS |
| Flash Program Memory | 512 KB (170K x 24) |
| RAM | 16 KB |
| Supply Voltage | 3.3 V |
| PWM Channels | 12 |
| Input Capture / Output Compare | 8 / 8 |
| Quadrature Encoder Interfaces (QEI) | 2 |
| On-chip Operational Amplifiers | 4 |
| CAN Modules | 2 x CAN 2.0B |
| Operating Temperature Range | -40C to +85C |
| Package | 44-TQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| Packaging | Tray |
| Category | Digital Signal Controllers / 16-bit Microcontrollers |
DSPIC33EP512GM304-I/PT Pin Configuration
| Pin 1 | MCLR — Master clear reset / programming voltage input (VPP) |
| Pin 2 | AN0/VREF+/CN2/RB0 — Analog input 0 / positive voltage reference / change notification / port B |
| Pin 3 | AN1/VREF-/CN3/RB1 — Analog input 1 / negative voltage reference / change notification / port B |
| Pin 4 | AN2/SS1/CN4/RB2 — Analog input 2 / SPI1 slave select / port B |
| Pin 5 | AN3/INDX/CN5/RB3 — Analog input 3 / QEI index input / port B |
| Pin 6 | AN4/QEA/IC7/CN6/RB4 — Analog input 4 / QEI phase A / input capture 7 / port B |
| Pin 7 | AN5/QEB/IC8/CN7/RB5 — Analog input 5 / QEI phase B / input capture 8 / port B |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI/CN30/RA2 — Oscillator crystal input / external clock input |
| Pin 10 | OSC2/CLKO/RC15 — Oscillator crystal output / clock output |
| Pin 11 | VDD — Positive supply (3.3 V) |
| Pin 12 | PGD/EMUD1/CN1/RA1 — In-circuit serial programming data / emulation data / port A |
| Pin 13 | PGC/EMUC1/CN0/RA0 — In-circuit serial programming clock / emulation clock / port A |
| Pin 14 | SOSCI/CN1/RB6 — Secondary oscillator input / change notification / port B |
| Pin 15 | SOSCO/T1CK/CN0/RB7 — Secondary oscillator output / Timer1 external clock / port B |
| Pin 16 | VDD — Positive supply (3.3 V) |
| Pin 17 | VSS — Ground reference |
| Pin 18 | TCK/CN19/RB8 — Timer1 clock / change notification / port B |
| Pin 19 | AN6/RP2/CN12/RB9 — Analog input 6 / PPS remappable pin RP2 / port B |
| Pin 20 | AN7/RP3/CN13/RB10 — Analog input 7 / PPS remappable pin RP3 / port B |
| Pin 21 | AN8/RP4/CN14/RB11 — Analog input 8 / PPS remappable pin RP4 / port B |
| Pin 22 | AN9/RP5/CN15/RB12 — Analog input 9 / PPS remappable pin RP5 / port B |
| Pin 23 | AN10/RP6/CN16/RB13 — Analog input 10 / PPS remappable pin RP6 / port B |
| Pin 24 | AN11/RP7/CN17/RB14 — Analog input 11 / PPS remappable pin RP7 / port B |
| Pin 25 | VSS — Ground reference |
| Pin 26 | AVDD — Analog positive supply for ADC and op-amps |
| Pin 27 | AVSS — Analog ground reference |
| Pin 28 | CVDD — Comparator/op-amp positive supply |
| Pin 29 | CVSS — Comparator/op-amp ground |
| Pin 30 | VCAP/VDDCORE — Core regulator capacitor connection (do not use as supply) |
| Pin 31 | RP8/CN18/RB15 — PPS remappable pin RP8 / port B |
| Pin 32 | RP9/CN21/RB16 — PPS remappable pin RP9 / port B |
| Pin 33 | RP10/CN22/RB17 — PPS remappable pin RP10 / port B |
| Pin 34 | RP11/CN23/RB18 — PPS remappable pin RP11 / port B |
| Pin 35 | RP12/CN24/RB19 — PPS remappable pin RP12 / port B |
| Pin 36 | RP13/CN25/RB20 — PPS remappable pin RP13 / port B |
| Pin 37 | RP14/CN26/RB21 — PPS remappable pin RP14 / port B |
| Pin 38 | RP15/CN27/RB22 — PPS remappable pin RP15 / port B |
| Pin 39 | RP16/CN28/RC12 — PPS remappable pin RP16 / port C |
| Pin 40 | RP17/CN29/RC13 — PPS remappable pin RP17 / port C |
| Pin 41 | RTCC/RC14 — Real-time clock and calendar output / port C |
| Pin 42 | RP18/CN31/RC1 — PPS remappable pin RP18 / port C |
| Pin 43 | RP19/CN32/RC2 — PPS remappable pin RP19 / port C |
| Pin 44 | VDD — Positive supply (3.3 V) |
Typical Applications
DSPIC33EP512GM304-I/PT is suitable for 6 applications: PMSM / BLDC Motor Drives, Digital Power Supplies and Solar Inverters, Industrial Automation and PLC I/O, Sensor Signal Conditioning and Data Acquisition, Embedded Control with CAN Networking, Portable Test and Measurement Instruments.
PMSM / BLDC Motor Drives
The DSPIC33EP512GM304-I/PT fits precision motor drives because its 70 MIPS core sustains field-oriented control (FOC) loops at 10-20 kHz while the 12 PWM channels generate complementary outputs with hardware dead-time for three-phase inverters. The two QEI modules accept quadrature encoder feedback for closed-loop position control, and the four on-chip op-amps amplify current-shunt signals ahead of the ADC, eliminating external amplifier stages. In a typical FOC servo drive, the device samples phase currents, executes Clark/Park transforms and PI loops in the DSP MAC engine, and updates PWM duty cycles within one control period. The 16KB RAM accommodates observer state variables and communication buffers, while 512KB flash holds full motion profiles and fieldbus stacks. Choose this part when dual-axis or high-resolution encoder-based control is needed in a 44-pin budget.
Recommended
Digital Power Supplies and Solar Inverters
In digitally controlled AC-DC, DC-DC, and solar micro-inverter designs, the DSPIC33EP512GM304-I/PT provides the deterministic control core: the 70 MIPS pipeline executes voltage/current compensation loops with the hardware DSP multiply-accumulate unit, and high-resolution PWM updates support phase-shifted and interleaved topologies. The 12-bit ADC with simultaneous sampling captures input voltage, output current, and temperature in one shot group, while the DMA controller streams results to 16KB RAM without CPU intervention - keeping ISR latency predictable. The 512KB flash stores compensation coefficients, soft-start state machines, MPPT algorithms, and firmware-update bootloaders. Two CAN 2.0B modules enable supervisory communication in paralleled inverter arrays. Because the part runs from a single 3.3V rail, level-shifting to gate-driver inputs is straightforward, and the -40C to +85C industrial rating covers outdoor power-electronics enclosures.
Recommended
Industrial Automation and PLC I/O
Factory automation nodes benefit from the DSPIC33EP512GM304-I/PT's blend of DSP math and standard MCU connectivity. The Peripheral Pin Select (PPS) system maps UART, SPI, and I2C onto flexible 44-pin package locations, easing PCB routing in dense I/O modules, while two CAN 2.0B controllers natively support CANopen and DeviceNet-style fieldbus traffic without external controllers. The 8 input-capture and 8 output-compare units timestamp encoder events and generate coordinated pulse trains for stepper or servo indexing, and the QEI modules decode position feedback directly. With 512KB flash, one controller can hold a protocol stack, a PID scheduler, and diagnostics logging simultaneously. The 16KB RAM buffers fieldbus frames and sample histories. Its -40C to +85C rating and industrial qualification profile suit control cabinets, motor junction boxes, and distributed I/O near machinery.
Recommended
Sensor Signal Conditioning and Data Acquisition
The DSPIC33EP512GM304-I/PT integrates four operational amplifiers and a 12-bit ADC, making it a compact front-end for industrial sensors such as pressure bridges, thermocouples with cold-junction math, and current transducers. The on-chip op-amps can be configured in differential or S/H modes to amplify millivolt-level bridge outputs before conversion, reducing BOM count and board area. The DSP core applies calibration polynomials, digital filtering (IIR/FIR with the MAC unit), and linearization curves executed at 70 MIPS - far faster than firmware-only approaches on general MCUs. The 16KB RAM holds filter states and rolling statistics, while 512KB flash retains multi-point calibration tables per device serial number. Processed results stream out over UART, SPI, or CAN. This single-chip approach is ideal for transmitters, weighing modules, and condition-monitoring probes where the -40C to +85C industrial range is required.
Recommended
Embedded Control with CAN Networking
With two independent CAN 2.0B controllers, the DSPIC33EP512GM304-I/PT serves as a networked embedded controller in vehicles, agricultural equipment, and building systems that bridge CAN segments or gateway between CAN and serial links. Each CAN module has dedicated hardware buffers with DMA support, offloading message handling from the CPU so the 70 MIPS core can simultaneously run application logic, filtering, and sensor processing. The PPS system lets designers place CANTX/CANRX, UART, and PWM pins optimally across the 44-pin TQFP. The 512KB flash stores multiple protocol profiles and OTA-update bootloaders, and 16KB RAM maintains several transmit/receive FIFOs plus application state. The 3.3V rail integrates directly with standard CAN transceivers. Applications include chassis nodes, irrigation controllers, HVAC zone units, and battery monitoring units where -40C operation is mandatory.
Recommended
Portable Test and Measurement Instruments
Handheld and bench instruments - data loggers, impedance meters, and waveform-capture probes - leverage the DSPIC33EP512GM304-I/PT for its single-supply 3.3V operation, DSP-class math, and flexible analog integration. The 70 MIPS core executes FFT windows, RMS computation, and auto-ranging state machines with the hardware MAC engine, keeping measurements responsive. The four op-amps condition input signals ahead of the 12-bit ADC, and the DMA controller streams conversion results into 16KB RAM for post-processing and display formatting. The 512KB flash stores calibration constants, logarithmic history, and multi-language UI assets. UART and SPI connect to displays, touch interfaces, and USB-bridge chips. Because the device idles at low typical currents in doze modes, battery-operated instruments achieve long runtimes while retaining instant wake-up via input-capture triggers - a balance difficult to achieve with separate MCU-plus-DSP designs.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP512GM304-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP512GM604-I/PT | DSPIC33EP128GM304-I/PT | DSPIC33EP256MC504-I/PT | ||
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | ||
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same |
| Performance | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Flash Memory | 512 KB (170K x 24) | 512 KB | 128 KB | 256 KB | 256 KB | 32 KB |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Peripheral Family | GM (general purpose + motor control) | GM family | GM family | MC (motor control) family | GP (general purpose) family | GP (general purpose) family |
Key Differentiators
- Maximum flash in the 44-pin family (vs DSPIC33EP256GP504-I/PT)
- RAM upgrade path on identical footprint (vs DSPIC33EP512GM604-I/PT)
- Integrated analog front-end (vs DSPIC33EP32GP504T-I/PT)
Design Notes
The dsPIC33EP core is powered by an internal regulator; connect VCAP/VDDCORE (pin 30 area) to a low-ESR ceramic capacitor of the value specified in the manufacturer datasheet - typically on the order of 10 uF - and never load this pin externally. Place 100 nF decoupling capacitors on every VDD pin within 2-3 mm of the package, plus bulk 4.7-10 uF per supply bank. Separate AVDD from digital VDD with a ferrite bead and local 1 uF + 100 nF pair to preserve ADC accuracy when PWM switching noise is present.
Route analog inputs (AN0-AN11) away from PWM and crystal traces on the 10x10 mm TQFP breakout. Keep the secondary oscillator (SOSCI/SOSCO) traces short and guarded by ground when driving the RTCC for logging applications. PPS remappable pins (RPn) allow placing UART/SPI/PWM near their connectors - assign them during schematic capture, then lock the PPS register map in firmware to prevent accidental remap. Use the exposed datasheet-recommended land pattern for reliable reflow of the 0.8 mm-pitch leads.
Two frequent errors: (1) forgetting that MCLR doubles as VPP during programming - never tie it directly to VDD without the recommended pull-up resistor and programming-circuit consideration, or ICSP with PICkit/ICD tools will fail; (2) leaving ADC-capable pins as analog after reset - ANx pins default to analog mode, so digital I/O requires clearing ANSELx registers in initialization. Also verify flash wait-state settings when configuring for 70 MIPS: the 512KB array requires the correct wait states at maximum frequency for reliable execution.
Estimated: at 70 MIPS with all peripherals active, typical core current is on the order of tens of mA, giving power dissipation well under 0.5 W - well within the 44-TQFP thermal capability without heatsinking. The dominant thermal concern is not the DSC itself but adjacent gate drivers; provide ground pour around the controller to keep local ambient inside the -40C to +85C rating of the -I temperature grade. Verify worst-case dissipation with Microchip's current-consumption estimates at your actual clock configuration.
Compliance Information
/PT suffix denotes RoHS-compliant, lead-free Tray packaging per Microchip part-numbering convention; verify REACH and halogen-free declarations on Microchip environmental documentation.
