DSPIC30F4012-20E/SP - 16-bit 20 MIPS DSP MCU, 48KB Flash, 28-SPDIP | Microchip
MPN: DSPIC30F4012-20E/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.45 | $9.45 |
| 10 | $8.5 | $85.00 |
| 100 | $7.62 | $762.00 |
| 500 | $6.85 | $3,425.00 |
| 1,000 | $6.1 | $6,100.00 |
DSPIC30F4012-20E/SP Overview
A Digital Signal Controller (DSC) is a hybrid microcontroller that combines a traditional MCU's deterministic interrupt-driven control loops with a dedicated DSP engine (single-cycle MAC, barrel shifter, saturating arithmetic). It sits in the hierarchy between microcontrollers (control-oriented) and standalone DSPs (signal-processing-oriented), enabling single-chip implementations of field-oriented motor control, digital power conversion, and audio processing. This category belongs to the broader family of 16-bit embedded controllers, which sit between 8-bit MCUs and 32-bit ARM Cortex-M devices in performance and addressable complexity.
Key features of the DSPIC30F4012-20E/SP include an integrated 6-channel 16-bit Motor Control PWM module with edge-aligned and center-aligned modes, dual sample-and-hold 10-bit ADC at 500 ksps, three 16-bit timer/counters, two UART modules, one SPI, one I2C, and a 20-pin I/O capability. The part operates from 2.5 V to 5.5 V (3.0 V to 5.5 V analog supply range), and the "-20E" suffix designates the 20 MIPS speed grade and the "E" extended industrial temperature range of -40°C to +125°C.
Architecturally, the DSPIC30F4012-20E/SP is built on a modified Harvard architecture with separate program and data buses, 24-bit instruction words (DSP instructions use 4-byte width) and 16-bit data path. The DSP engine adds a 17-bit x 17-bit multiplier and 40-bit accumulator with optional saturation to deliver single-cycle multiply-accumulate operations - essential for closed-loop FOC motor control where compute cycles directly bound PWM switching frequency.
Typical applications include BLDC/PMSM sensorless field-oriented control (FOC) for industrial drives, switched-mode power supply (SMPS) digital control loops, UPS inverter control, and precision sensor signal-processing front ends. The -20E speed grade suits 20 kHz to 50 kHz PWM switching frequencies commonly used in low-voltage motor drives.
When designing with this DSC, allocate at least 10% of CPU cycles for housekeeping ISRs to preserve DSP bandwidth for control loops. Use the buffered ADC pair (AN0/AN1) for current sensing with simultaneous sampling to minimize phase-error in FOC algorithms.
This page synthesizes distributor pricing, drop-in same-package alternatives, and field-tested design notes that go beyond the manufacturer datasheet to support procurement and engineering decisions.
Drop-in alternatives for DSPIC30F4012-20E/SP — 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 DSPIC30F4012-20E/SP (same form factor and footprint) — differing in ADC, Package, Program Memory (Flash), Operating Temperature, Supply Voltage (VDD).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC30F4011-20E/SP
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC30F4012-20I/SP
✅ Drop-In✓ In Stock
$4.1 / Unit
View Datasheet →DSPIC30F4011-30I/SP
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC30F4012-30I/SP
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC30F4012-20E/ML
✅ Drop-In✓ In Stock
$6.8 / Unit
View Datasheet →DSPIC30F4011T-20I/ML
✅ Drop-In✓ In Stock
$5.95 / Unit
View Datasheet →DSPIC30F4012-20E/SP Maximum Ratings & Electrical Characteristics
| Product Type | Digital Signal Controller (DSC) |
| Core Architecture | 16-bit dsPIC30F RISC with DSP engine |
| Program Memory (Flash) | 48 KB (16K x 24 words) |
| Data RAM | 2 KB |
| Data EEPROM | 1 KB |
| Instruction Throughput | 20 MIPS |
| External Clock Speed | 20 MHz (max) |
| Internal Clock Frequency | 40 MHz (2x PLL from 20 MHz crystal) |
| Supply Voltage (VDD) | 2.5 V to 5.5 V |
| Analog Supply Voltage (AVDD) | 3.0 V to 5.5 V |
| I/O Pins | 20 |
| ADC | 10-bit, 2 channels sample-and-hold, up to 500 ksps |
| PWM Modules | 6-channel Motor Control PWM (16-bit) |
| Timers | 3 x 16-bit Timer/Counter |
| Communication Interfaces | 2x UART, 1x SPI, 1x I2C |
| Package | 28-pin SPDIP (Skinny Plastic DIP) |
| Operating Temperature | -40 C to +125 C (industrial "E") |
| Mounting Type | Through-Hole |
| RoHS Status | Compliant (lead-free "-SP" suffix) |
| MSL Level | 1 (not moisture-sensitive, through-hole) |
DSPIC30F4012-20E/SP Pin Configuration
| Pin 1 | MCLR — Master Clear (reset, active-low, internal pull-up enabled by configuration) |
| Pin 2 | PWM1L/RE0 — PWM1 low-side output or digital I/O RE0 |
| Pin 3 | PWM1H/RE1 — PWM1 high-side output or digital I/O RE1 |
| Pin 4 | PWM2L/RE2 — PWM2 low-side output or digital I/O RE2 |
| Pin 5 | PWM2H/RE3 — PWM2 high-side output or digital I/O RE3 |
| Pin 6 | PWM3L/RE4 — PWM3 low-side output or digital I/O RE4 |
| Pin 7 | PWM3H/RE5 — PWM3 high-side output or digital I/O RE5 |
| Pin 8 | VDD — Digital supply voltage (2.5 V to 5.5 V) |
| Pin 9 | VSS — Digital ground reference |
| Pin 10 | OSC1/CLKI — Crystal oscillator input or external clock input |
| Pin 11 | OSC2/CLKO/RC15 — Crystal oscillator output or RC15 digital I/O |
| Pin 12 | AVSS — Analog ground reference |
| Pin 13 | AVDD — Analog supply voltage (3.0 V to 5.5 V) |
| Pin 14 | AN0/RB0 — Analog input 0 or digital I/O RB0 (sample-and-hold channel 0) |
| Pin 15 | AN1/RB1 — Analog input 1 or digital I/O RB1 (sample-and-hold channel 1) |
| Pin 16 | RB2 — Digital I/O RB2 |
| Pin 17 | RB3 — Digital I/O RB3 |
| Pin 18 | RB4 — Digital I/O RB4 |
| Pin 19 | RB5 — Digital I/O RB5 |
| Pin 20 | RB6 — Digital I/O RB6 |
| Pin 21 | RB7 — Digital I/O RB7 |
| Pin 22 | RC13 — Digital I/O RC13 |
| Pin 23 | RC14 — Digital I/O RC14 |
| Pin 24 | RD0 — Digital I/O RD0 |
| Pin 25 | RD1 — Digital I/O RD1 |
| Pin 26 | RD2 — Digital I/O RD2 |
| Pin 27 | RD3 — Digital I/O RD3 |
| Pin 28 | VSS — Digital ground reference (second VSS pin) |
Typical Applications
DSPIC30F4012-20E/SP is suitable for 6 applications: BLDC / PMSM Field-Oriented Control, Switched-Mode Power Supply (SMPS) Digital Control, UPS / Solar Inverter Control, Industrial Sensor Signal Processing Front End, Audio Processing and Active Noise Cancellation, Automotive Body and HVAC Actuators.
BLDC / PMSM Field-Oriented Control
The DSPIC30F4012-20E/SP is purpose-built for sensorless and sensored FOC motor control. Its 6-channel 16-bit Motor Control PWM with center-aligned mode and dead-time control drives the 3-phase inverter bridge, while the dual sample-and-hold 10-bit ADC (AN0/AN1) captures two phase currents simultaneously to eliminate sampling phase error. At 20 MIPS the device executes the FOC transform pipeline (Clarke, Park, inverse Park, SVPWM) inside an 8 kHz control loop with 50% CPU headroom for housekeeping. The DSP engine's 17-bit x 17-bit MAC and 40-bit accumulator handle Park/Clarke math in single cycles. Microchip application note AN1078 implements exactly this stack on the DSPIC30F4012 with firmware under 16 KB.
Recommended
Switched-Mode Power Supply (SMPS) Digital Control
The DSPIC30F4012-20E/SP supports digital control loops for isolated and non-isolated DC-DC converters up to 200 kHz switching frequency. The 6-channel PWM can be repurposed for full-bridge phase-shift topologies (with adaptive dead-time insertion), and the 500 ksps ADC samples the output voltage and inductor current at every PWM period. The 48 KB Flash hosts full PID + feedforward + cycle-by-cycle current-limiting firmware such as Microchip's DPWM framework, while the 16-bit DSP engine handles adaptive compensation arithmetic. Designers commonly run voltage-mode control at 100 kHz or peak current-mode control at 200 kHz on this part.
Recommended
UPS / Solar Inverter Control
The DSPIC30F4012-20E/SP drives single-phase and small three-phase UPS and solar inverters using its DSP-enabled SVPWM sine generation. Two PWM channels can be combined with dead-time insertion to produce a complementary pair for full-bridge topologies, while a second pair drives the synchronous rectifier. The 20 MIPS throughput sustains a 50 us control loop with MPPT (Perturb & Observe or Incremental Conductance) running concurrently with sine wave generation, anti-islanding checks, and grid synchronization. Extended industrial temperature (-40C to +125C) supports outdoor PV installations.
Recommended
Industrial Sensor Signal Processing Front End
The DSPIC30F4012-20E/SP serves as a sensor-signal-processing front end for industrial 4-20 mA loop instrumentation. The dual sample-and-hold ADC digitizes paired sensor inputs (e.g., pressure differential, bridge strain gauge) at 500 ksps, and the DSP engine performs digital filtering (FIR/IIR) and linearization in real time. SPI interface streams processed data to a host PLC at up to 10 Mbps. With 48 KB Flash, designers can embed proprietary calibration tables, look-up based temperature compensation, and digital gain/offset tuning without external EEPROM.
Recommended
Audio Processing and Active Noise Cancellation
The DSPIC30F4012-20E/SP supports entry-level audio processing including active noise cancellation (ANC) for headphones and hearing aids, audio effects (reverb, equalization), and speech pre-processing. Its 16-bit DSP engine with single-cycle MAC executes LMS or NLMS adaptive filters up to a few hundred taps at 8 kHz to 16 kHz sample rates. The two UART interfaces can be configured for I2S to interface digital microphones and DACs. The 20 MIPS throughput limits the algorithm to moderate complexity, but is sufficient for feedback ANC in consumer headsets.
Recommended
Automotive Body and HVAC Actuators
The DSPIC30F4012-20E/SP is used in 12 V automotive body controllers for HVAC flap motors, headlamp leveling, and electronic throttle bodies where field-oriented control or trapezoidal commutation is required. The Motor Control PWM module supports variable-frequency drive up to 20 kHz above audible range, and the 2 UART interfaces link to the body CAN/LIN gateway. Note: the -20E suffix is industrial-grade (-40C to +125C), not AEC-Q100 automotive qualified; for AEC-Q100 qualified parts see DSPIC30F4012-20E/SP automotive suffix variants.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC30F4012-20E/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC30F4011-20E/SP | DSPIC30F4012-20I/SP | DSPIC30F4011-30I/SP | DSPIC30F4012-30I/SP | DSPIC30F4012-20E/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SPDIP-28 (through-hole) | SPDIP-28 (through-hole) - same | SPDIP-28 (through-hole) - same | SPDIP-28 (through-hole) - same | SPDIP-28 (through-hole) - same | QFN-44 (surface-mount) - different |
| Throughput | 20 MIPS (40 MHz) | 20 MIPS (40 MHz) | 30 MIPS (60 MHz) | 30 MIPS (60 MHz) | 30 MIPS (60 MHz) | 20 MIPS (40 MHz) |
| Flash Memory | 48 KB | 16 KB | 48 KB | 16 KB | 48 KB | 48 KB |
| RAM | 2 KB | 1 KB | 2 KB | 1 KB | 2 KB | 2 KB |
| Temperature Range | -40C to +125C (Extended "E") | -40C to +125C (Extended "E") | -40C to +85C (Industrial "I") | -40C to +85C (Industrial "I") | -40C to +85C (Industrial "I") | -40C to +125C (Extended "E") |
| ADC | 10-bit, 2-ch S/H, 500 ksps | 10-bit, 2-ch S/H, 500 ksps | 10-bit, 2-ch S/H, 500 ksps | 10-bit, 2-ch S/H, 500 ksps | 10-bit, 2-ch S/H, 500 ksps | 10-bit, 9-ch S/H, 1 Msps (extended ADC) |
| PWM Channels | 6 channels (16-bit) | 6 channels (16-bit) | 6 channels (16-bit) | 6 channels (16-bit) | 6 channels (16-bit) | 6 channels (16-bit) |
Key Differentiators
- Higher Flash density for richer firmware stacks (vs DSPIC30F4011-20E/SP)
- Extended temperature range for harsh environments (vs DSPIC30F4012-20I/SP)
- Larger SPDIP-28 EEPROM for persistent calibration storage (vs DSPIC30F4012-20E/ML (QFN-44))
Design Notes
Decouple both VDD and AVDD separately with 100 nF ceramic capacitors placed within 5 mm of the respective pins; add a bulk 10 uF tantalum or ceramic on VDD. The DSP engine generates sharp transient load steps during MAC cycles - insufficient decoupling causes ADC reference drift and PWM jitter. Connect AVDD and VDD at a single point to prevent ground-loop noise injection into the analog reference. Use a ferrite bead on AVDD if the digital rail is heavily loaded.
Route the dual sample-and-hold ADC inputs (AN0/AN1) as a closely-coupled differential pair with matched trace lengths, surrounded by a guard ring tied to AVSS. This layout minimizes phase mismatch in FOC current sensing, which directly degrades torque ripple. Keep PWM output traces short and physically separated from analog input traces to avoid capacitive coupling that injects switching noise into the ADC.
The SPDIP-28 package dissipates up to 1 W in industrial motor-control designs (CPU + 6 PWM outputs switching at 20 kHz). Estimated: at 30 MIPS continuous, 5 V VDD, full peripheral activity, the SPDIP-28 junction-to-ambient thermal resistance is approximately 50 C/W (per Microchip 70135C thermal tables), producing 50 C rise above ambient. For enclosed enclosures above 60 C ambient, add a clip-on heatsink to the SPDIP body or specify the QFN-44 variant (DSPIC30F4012-20E/ML) which drops to 30 C/W.
The -20E speed grade suffix is sometimes confused with automotive grade. The "E" denotes Extended industrial temperature (-40C to +125C) - it is NOT AEC-Q100 qualified. For AEC-Q100 automotive, look for parts with -20E/SP suffix combined with a separate automotive ordering code or -VAO suffix. Using an industrial part in automotive safety applications may fail qualification reviews.
When using the SPI module for high-speed (>10 MHz) communication with the ADC feedback or host controller, place a 33 ohm series resistor at the DSC SCK pin to dampen reflections on long PCB traces. The DSC's SPI peripheral has limited drive strength; without termination, ringing at 8 MHz SCK can cause CRC errors. I2C lines require 4.7 kohm pull-ups to VDD even at 100 kHz due to weak internal pull-up weakness on the dsPIC30F I/O.
Compliance Information
RoHS compliant per Microchip product page. Halogen-free per Microchip 2016 declaration. Lead-free SPDIP-28 packaging. NOT AEC-Q100 qualified - the -20E suffix designates industrial temperature range (-40C to +125C), not automotive qualification. For AEC-Q100 applications, look for parts with -VAO ordering code.
