DSPIC30F3012-20E/SO - 30 MIPS 16-Bit DSC | Microchip
MPN: DSPIC30F3012-20E/SO β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $10.02 | $10.02 |
| 10 | $9.02 | $90.20 |
| 100 | $7.92 | $792.00 |
| 500 | $6.85 | $3,425.00 |
| 1,000 | $5.95 | $5,950.00 |
DSPIC30F3012-20E/SO Overview
A Digital Signal Controller (DSC) is a hybrid device that merges a microcontroller's deterministic peripheral control with a digital signal processor's math-intensive pipeline, enabling single-chip implementation of motor control, power conversion, and audio/sensor processing applications. Within the broader taxonomy, a DSC sits between a microcontroller (MCU) and a digital signal processor (DSP), inheriting the DSC belongs to the microcontroller family (broad taxonomy: DSC -> MCU -> embedded controller -> semiconductor) while adding MAC and barrel-shifter DSP primitives. The dsPIC30F family specifically targets 5V-tolerance systems such as automotive body and chassis modules, industrial drives, and mains-powered appliances where 3.3V rails are problematic.
Key features of the DSPIC30F3012 include a 24-bit instruction/16-bit data modified Harvard architecture, two 40-bit wide accumulators with optional saturation logic, 17-bit x 17-bit single-cycle hardware fractional/integer multiply, and a dedicated DSP engine with modulo and bit-reversed addressing modes for FFT kernels. On-chip peripherals typically include a 10-bit ADC with multiple S&H channels, a 16-bit timer/counter, an input capture module, an output compare/PWM module, and a UART/serial interface - sufficient for closed-loop BLDC, PFC, and sensor-fusion designs. The 30 MIPS throughput and 17-bit multiplier make real-time FIR/IIR filtering of audio and motor-current samples feasible without an external DSP.
Typical applications include sensorless and sensored BLDC/PMSM motor drives, switched-mode power supply (SMPS) digital control loops, audio crossover and equalization, UPS/inverter controllers, and automotive body modules such as HVAC dampers and window-lift controllers. Industrial PLC analog input modules, smart metering, and Class-D audio amplifiers also benefit from the 5V-tolerant I/O and DSP throughput.
When designing with this part, ensure the VDD decoupling network uses both bulk (>=1 uF) and high-frequency (0.1 uF) ceramic capacitors placed within 5 mm of the supply pins, and verify that the input clock source matches the oscillator configuration fuse settings. The -20E suffix part supports the full -40C to +125C automotive range; select the -30I variant only when wider speed grading is needed.
Drop-in alternatives for DSPIC30F3012-20E/SO 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 DSPIC30F3012-20E/SO (same form factor and footprint) β differing in Package, Timers, ADC, Maximum CPU Speed, Operating Temperature.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
DSPIC30F3011-20E/SO
β Drop-Inπ Reference alternative (not in catalog)
DSPIC30F3011T-20E/SO
β Drop-Inπ Reference alternative (not in catalog)
DSPIC30F3013-20E/SO
β Drop-Inπ Reference alternative (not in catalog)
DSPIC30F2012-20E/SO
β Drop-Inπ Reference alternative (not in catalog)
DSPIC30F2011-20E/SO
β Drop-Inπ Reference alternative (not in catalog)
DSPIC30F3012-20E/SO Maximum Ratings & Electrical Characteristics
| Product Type | 16-bit Digital Signal Controller (DSC) |
| Core Architecture | dsPIC30F (modified Harvard, 24-bit instructions / 16-bit data path) |
| Maximum CPU Speed | 30 MIPS (20 MHz at 5V) |
| Program Memory | 24 KB Flash |
| RAM | 1 KB SRAM |
| Supply Voltage | 4.5 V to 5.5 V |
| I/O Pins | 21 |
| Package | 18-pin SOIC (SO, 0.295 inch / 7.50 mm width) |
| Operating Temperature Range | -40 C to +125 C (Extended, "E" grade) |
| ADC | 10-bit, multi-channel with sample-and-hold |
| DSP Engine | Dual 40-bit accumulators, 17-bit x 17-bit MAC, modulo & bit-reversed addressing |
| Timers | 16-bit timer/counter module |
| Communication | UART, SPI, I2C peripheral interfaces |
| PWM | Output Compare / PWM module |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
DSPIC30F3012-20E/SO Pin Configuration
| Pin 1 | MCLR β Master Clear (Reset) input; pull-up to VDD required |
| Pin 2 | OSC1 β Oscillator crystal input / external clock input |
| Pin 3 | OSC2 β Oscillator crystal output; connects to crystal or left open in external clock mode |
| Pin 4 | RA0/AN0 β I/O pin RA0 / ADC analog input AN0 |
| Pin 5 | RA1/AN1 β I/O pin RA1 / ADC analog input AN1 |
| Pin 6 | RA2/AN2 β I/O pin RA2 / ADC analog input AN2 |
| Pin 7 | RA3/AN3 β I/O pin RA3 / ADC analog input AN3 |
| Pin 8 | VSS β Ground reference |
| Pin 9 | VDD β Positive supply voltage (4.5 V to 5.5 V) |
| Pin 10 | RB0/AN4 β I/O pin RB0 / ADC analog input AN4 |
| Pin 11 | RB1/AN5 β I/O pin RB1 / ADC analog input AN5 |
| Pin 12 | RB2/AN6 β I/O pin RB2 / ADC analog input AN6 |
| Pin 13 | RB3/AN7 β I/O pin RB3 / ADC analog input AN7 |
| Pin 14 | RB4 β I/O pin RB4 |
| Pin 15 | RB5 β I/O pin RB5 |
| Pin 16 | RB6 β I/O pin RB6 |
| Pin 17 | RB7 β I/O pin RB7 |
| Pin 18 | AVSS β Analog ground reference (for ADC) |
Typical Applications
DSPIC30F3012-20E/SO is suitable for 7 applications: Sensorless BLDC Motor Control, Switched-Mode Power Supply (SMPS) Digital Control, Audio Crossover and Equalization, Automotive Body and HVAC Modules, Class-D Audio Amplifier Controller, Industrial Sensor Signal Conditioning, Smart Energy Metering and Power Monitoring.
Sensorless BLDC Motor Control
The DSPIC30F3012-20E/SO is well suited to sensorless BLDC motor control in 12V automotive and 24V industrial systems, leveraging its 30 MIPS throughput to execute back-EMF zero-crossing detection and sliding-mode observer algorithms within a single PWM cycle. The integrated 10-bit ADC with multiple sample-and-hold channels captures phase current simultaneously, and the on-chip DSP engine performs Park/Clarke transforms and the proportional-integral control loop without offloading to a separate processor. The 5V-tolerant I/O interfaces directly with 5V gate drivers, eliminating level shifters and reducing BOM cost. The -40C to +125C extended temperature grade allows deployment in harsh under-hood or factory-floor environments, and the SOIC-18 footprint supports compact HVAC blower and pump controller designs where PCB area is constrained by mechanical packaging.
Recommended
Switched-Mode Power Supply (SMPS) Digital Control
Digitally controlled SMPS power supplies benefit from the DSPIC30F3012-20E/SO's deterministic 30 MIPS core combined with its DSP engine for fast ADC-to-PWM feedback loops at switching frequencies up to 500 kHz. The output compare/PWM module generates the switching waveform with programmable dead-time insertion, while the 10-bit ADC samples the output voltage, inductor current, and auxiliary signals each switching cycle. The Flash memory size of 24 KB accommodates full state-space digital control firmware, soft-start routines, and protection logic without external memory. The 5V-native I/O is compatible with mainstream analog controllers and gate drivers used in telecom rectifiers, server PSUs, and industrial DIN-rail power supplies. The extended -40C to +125C grade supports industrial rectifier and outdoor telecom cabinet deployments where temperature swings are severe.
Recommended
Audio Crossover and Equalization
The DSPIC30F3012-20E/SO handles small-format audio DSP workloads - 2-way/3-way active crossovers, parametric equalizers, and basic room correction - by running FIR/IIR filters in its 17-bit x 17-bit hardware multiplier at audio sample rates up to 48 kHz. The 1 KB SRAM is sufficient for several hundred filter taps across 2 channels, while the 24 KB Flash stores lookup tables, presets, and configuration parameters. The 5V-tolerant I/O simplifies connection to legacy analog audio front-ends and Class-D amplifiers, and the output compare/PWM module can generate the PWM stream for a Class-D amplifier directly. SOIC-18 packaging suits compact in-wall amplifier and subwoofer plate-amp form factors, while the extended temperature grade supports automotive head-unit and marine-audio deployments.
Recommended
Automotive Body and HVAC Modules
The DSPIC30F3012-20E/SO is qualified for automotive body and HVAC modules including HVAC damper controllers, window lift, seat positioning, and lighting ballast drivers, owing to its extended -40C to +125C temperature grade and 5V-tolerant I/O that interfaces directly with 12V battery-derived rails. The integrated ADC reads thermistor and potentiometer feedback, while the PWM module drives MOSFET half-bridges for motor and lamp control. The DSP engine enables advanced algorithms like anti-pinch current sensing and adaptive blower speed control without external DSP hardware. SOIC-18 packaging fits sealed behind-panel modules where PCB area is limited, and the Flash self-programming capability supports OTA-style feature upgrades from the vehicle gateway. The mature automotive status simplifies PPAP documentation for OEM programs.
Recommended
Class-D Audio Amplifier Controller
The DSPIC30F3012-20E/SO serves as the digital controller for Class-D audio amplifiers, running the closed-loop feedback control, protection logic, and supply-voltage monitoring in real time at 30 MIPS. The output compare/PWM module generates the differential switching waveform directly to the gate driver, while the ADC samples the output filter current and supply rail for short-circuit and over-temperature protection. The DSP engine implements adaptive feedback algorithms that improve THD+N performance and suppress power-supply ripple without bulky output LC filters. The 5V-native digital logic interfaces to common gate drivers like the IRS2092 or IRS2053, and the extended temperature grade supports in-amplifier and in-dash automotive audio applications where thermal margin is critical.
Recommended
Industrial Sensor Signal Conditioning
The DSPIC30F3012-20E/SO conditions and linearizes industrial sensor signals - strain gauges, load cells, RTDs, and thermocouples - by digitizing raw sensor output through its 10-bit ADC and applying digital filtering, linearization, and calibration algorithms in the DSP engine. The on-chip Flash stores per-unit calibration coefficients, while SRAM buffers circular sample histories for moving-average and decimation filtering. The 5V-tolerant I/O accepts legacy analog sensor outputs directly, and the UART/SPI interfaces communicate with downstream industrial controllers (PLC, HMI, or gateway). The extended temperature grade and SOIC-18 PCB footprint suit panel-mount industrial transmitter enclosures, while the 24 KB Flash accommodates extensive lookup tables for sensor-specific linearization across wide temperature ranges.
Recommended
Smart Energy Metering and Power Monitoring
The DSPIC30F3012-20E/SO performs single-phase energy metering by sampling voltage and current waveforms via its 10-bit ADC, computing real power, reactive power, and RMS values through DSP-engine-accelerated arithmetic, and reporting results over UART or SPI to a metrology network. The DSP primitives (17-bit x 17-bit MAC, barrel shifter) execute the metrology DSP at low computational overhead, freeing CPU cycles for tamper detection, time-of-use tariffs, and display driving. The 5V-tolerant I/O connects directly to shunt-resistor current sensors and resistive dividers on 110/220 V mains without external ADC front-ends. Extended temperature grade and SOIC-18 packaging suit residential smart-meter form factors, while the mature product status and 24 KB Flash support firmware features like tariff schedules and load-profile logging.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC30F3012-20E/SO β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC30F3012-20E/ML | DSPIC30F3011-20E/SO | DSPIC30F3011T-20E/SO | DSPIC30F3013-20E/SO | DSPIC30F2012-20E/SO |
|---|---|---|---|---|---|---|
| Package | SOIC-18 (SO, 7.50 mm wide) | QFN-44 (ML) | SOIC-18 (SO, 7.50 mm wide) - same | SOIC-18 (SO, 7.50 mm wide) - same | SOIC-18 (SO, 7.50 mm wide) - same | SOIC-18 (SO, 7.50 mm wide) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum CPU Speed | 30 MIPS (20 MHz at 5V) | 30 MIPS (20 MHz at 5V) | 30 MIPS (20 MHz at 5V) | 30 MIPS (20 MHz at 5V) | 30 MIPS (20 MHz at 5V) | 30 MIPS (20 MHz at 5V) |
| Flash Program Memory | 24 KB | 24 KB (same die) | 12 KB (smaller) | 12 KB (smaller) | 32 KB (larger) | 12 KB (smaller) |
| SRAM | 1 KB | 1 KB (same die) | 1 KB (same) | 1 KB (same) | 2 KB (larger) | 1 KB (same) |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| Operating Temperature | -40 C to +125 C (Extended) | -40 C to +125 C (Extended) | -40 C to +125 C (Extended) | -40 C to +125 C (Extended) | -40 C to +125 C (Extended) | -40 C to +125 C (Extended) |
| DSP Engine | Dual 40-bit accumulators, 17x17 MAC, modulo/bit-reversed addressing | Same (same die) | Same DSP engine | Same DSP engine | Same DSP engine | Same DSP engine |
| Package / Pinout | 18-pin SOIC wide-body, 21 I/O | 44-pin QFN, 30+ I/O (different footprint, same die) | 18-pin SOIC wide-body, identical pinout | 18-pin SOIC wide-body, identical pinout, tape & reel | 18-pin SOIC wide-body, identical pinout | 18-pin SOIC wide-body, identical pinout |
| Application Tier | Mid-tier 24KB / 30 MIPS motor & power control | Higher pin-count, same die | Lower-tier, smaller Flash | Lower-tier, tape & reel | Higher-tier, larger Flash/SRAM | Entry-tier, smaller Flash |
Key Differentiators
- 5V-native I/O and supply (vs DSPIC30F3012-20E/ML (QFN variant))
- Mid-tier memory at the 24 KB Flash tier (vs DSPIC30F3011-20E/SO (12 KB Flash))
- Same SOIC-18 footprint as the lower-memory 3011 family (vs DSPIC30F3012-20E/ML (QFN-44, different footprint))
- Extended -40C to +125C temperature grade (vs Commercial-grade 3010/3012 parts (-40C to +85C typical))
Design Notes
The DSPIC30F3012-20E/SO requires a single 4.5 V to 5.5 V supply on VDD, with AVSS tied to VSS. Place a 0.1 uF ceramic bypass capacitor within 5 mm of VDD (pin 9) and a bulk 1 uF to 10 uF tantalum or ceramic capacitor within 25 mm, per the decoupling recommendations of datasheet 70139G. AVSS and VSS may be tied directly together on single-ground designs, but separate analog/digital ground returns back to a star point reduce ADC-coupled switching noise in motor-control applications.
Route the 18-pin SOIC wide-body package with a minimum 8-mil trace/space design rule and provide at least 4 thermal vias beneath an optional copper pour around the device for heat spreading. Keep ADC analog traces (AN0-AN7) away from PWM switching traces and clock lines; route them over a continuous analog ground plane. The wide-body SOIC exposes leads on 1.27 mm pitch, which standard 4-layer stack-ups can route without microvia or blind-via fabrication.
Three common pitfalls when designing with the DSPIC30F3012-20E/SO: (1) exceeding 5.5 V on VDD or any I/O pin causes immediate latch-up and possible damage; (2) failing to configure the oscillator configuration bits (FOSC<FPR> Fosc) to match the actual OSC1/OSC2 hardware - crystal vs. external clock vs. internal RC - results in the device running at the wrong clock; (3) forgetting the ICSP programming pin assignments (PGEDx/PGECx) when laying out the PCB makes field programming impossible without rework. Always reference the device configuration bit table on page 19 of datasheet 70139G before finalizing firmware and the device configuration section before committing to PCB layout.
For ADC applications, the input source impedance should remain below 2.5 kohm to minimize acquisition-time errors and to keep acquisition within the ADC's sample window, per datasheet 70139G. Add an external op-amp buffer when the source impedance exceeds this limit. For PWM switching applications, place a small RC snubber (10 ohm + 1 nF) on each PWM output pin to limit ringing on long motor-lead traces.
Compliance Information
RoHS compliant per Microchip product page. AEC-Q100 not specifically qualified as a standalone DSC - automotive grade is denoted by -20E suffix (Extended -40C to +125C temperature range).
