DSPIC30F4012-20I/SO - 16-bit DSC, 48KB Flash, 20MHz | Microchip
MPN: DSPIC30F4012-20I/SO β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.55 | $8.55 |
| 10 | $7.74 | $77.40 |
| 100 | $6.4 | $640.00 |
| 500 | $5.72 | $2,860.00 |
| 1,000 | $5.1 | $5,100.00 |
DSPIC30F4012-20I/SO Overview
A Digital Signal Controller is a hybrid semiconductor device that merges microcontroller peripherals and ease-of-use with the high-throughput MAC engine of a digital signal processor. Within the broader semiconductor hierarchy it sits between microcontroller units (MCUs) and digital signal processors (DSPs); Microchip's dsPIC30F family is the canonical implementation of this category, used where firmware-controlled signal conditioning (motor control, power conversion, sensor fusion) is required without external DSP overhead.
Key features include 20 I/O pins, integrated CAN, I2C, SPI and UART peripherals for multi-bus industrial networking, a 6-channel 10-bit ADC with 500 ksps throughput, dedicated motor-control PWM peripherals, and on-chip Flash/EEPROM self-programming for in-field firmware updates. The DSP engine delivers single-cycle MAC, zero-overhead looping, and barrel shifting, enabling deterministic control-loop execution.
Internally the dsPIC30F4012 uses a Harvard RISC architecture with a 24-bit instruction word, dual 40-bit accumulators, and a 16x16 fractional/integer hardware multiplier, giving it enough headroom for field-oriented control (FOC) of three-phase motors and for digital power-conversion loops. The 20 MIPS sustained throughput translates to a 50 ns instruction cycle, fast enough to sample, compute and update a control loop in a single PWM period.
Typical applications include BLDC and PMSM motor control, sensorless fan/pump drives, digital power-factor correction, UPS and inverter control, industrial sensor interfaces, and automotive body/comfort modules. Designers choose the SOIC-28 wide package when board area allows a through-hole-friendly footprint and when cost per unit is the primary driver.
When designing with this part, plan the PCB layout so that the analog AVSS/AVDD pair is decoupled separately from the digital supply, route the PWM outputs as impedance-controlled differential pairs where possible, and reserve a VPP/PGD pair for in-circuit debug and Flash programming. These simple choices reduce switching noise coupling into ADC samples and shorten firmware bring-up.
This page synthesizes distributor pricing, drop-in alternatives and practical design notes not found in the manufacturer datasheet, giving engineers a faster path from MPN search to qualified BOM.
Drop-in alternatives for DSPIC30F4012-20I/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 DSPIC30F4012-20I/SO (same form factor and footprint) β differing in ADC, I/O Pins, Package, RoHS Status.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
DSPIC30F4012-30I/SO
β Drop-Inπ Reference alternative (not in catalog)
DSPIC30F4012T-20I/SO
β Drop-Inβ In Stock
$4.2 / Unit
View Datasheet βDSPIC30F4012-20I/SP
β Drop-Inβ In Stock
$4.1 / Unit
View Datasheet βDSPIC30F4012-20E/SO
β Drop-Inπ Reference alternative (not in catalog)
DSPIC30F4012-30E/SO
β Drop-Inπ Reference alternative (not in catalog)
DSPIC30F4012-20I/SO Maximum Ratings & Electrical Characteristics
| Device Family | dsPIC30F |
| Core | 16-bit dsPIC DSC (Harvard RISC + DSP engine) |
| Instruction Cycle | 50 ns (20 MIPS at 4x PLL) |
| Maximum Operating Frequency | 20 MHz (40 MHz input clock with 4x PLL) |
| Flash Program Memory | 48 KB |
| SRAM Data Memory | 2 KB |
| EEPROM | 1 KB |
| Supply Voltage (Vdd) | 3.0 V to 5.5 V |
| I/O Pins | 20 |
| ADC | 6 channels, 10-bit, 500 ksps (per Verified Web Data) |
| Motor Control PWM | 6-channel (per dsPIC30F motor-control family) |
| Communication Peripherals | CAN, I2C, SPI, UART |
| Operating Temperature | -40 C to +85 C (Industrial, 'I' suffix) |
| Package | 28-pin SOIC wide (SO / SOIC-28W) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| IC Lifecycle Stage | ACTIVE |
| ROM Type | Flash |
DSPIC30F4012-20I/SO Pin Configuration
| Pin 1 | MCLR β Master Clear (reset) input, active-low |
| Pin 2 | AN0/VREF+/CVREF β Analog input 0 / ADC Vref+ / comparator Vref |
| Pin 3 | AN1/VREF- β Analog input 1 / ADC Vref- |
| Pin 4 | AN2 β Analog input 2 |
| Pin 5 | AN3 β Analog input 3 |
| Pin 6 | AN4 β Analog input 4 |
| Pin 7 | AN5 β Analog input 5 |
| Pin 8 | VDD β Digital supply voltage (3.0 V to 5.5 V) |
| Pin 9 | VSS β Digital ground |
| Pin 10 | OSC1/CLKI β Oscillator crystal input / external clock in |
| Pin 11 | OSC2/CLKO/RC15 β Oscillator crystal output / clock out / GPIO |
| Pin 12 | PGED1/EMUD1/RB0 β ICSP data / GPIO |
| Pin 13 | PGEC1/EMUC1/RB1 β ICSP clock / GPIO |
| Pin 14 | PGED2/EMUD2/RB2 β ICSP data alternate / GPIO |
| Pin 15 | PGEC2/EMUC2/RB3 β ICSP clock alternate / GPIO |
| Pin 16 | C1RX/RF0 β CAN1 RX / GPIO |
| Pin 17 | C1TX/RF1 β CAN1 TX / GPIO |
| Pin 18 | U1RX/RF2 β UART1 RX / GPIO |
| Pin 19 | U1TX/RF3 β UART1 TX / GPIO |
| Pin 20 | SDA1/RF4 β I2C1 SDA / GPIO |
| Pin 21 | SCL1/RF5 β I2C1 SCL / GPIO |
| Pin 22 | SS1/RF6 β SPI1 slave select / GPIO |
| Pin 23 | SDO1/RF7 β SPI1 data out / GPIO |
| Pin 24 | PWM1H/RE0 β Motor-control PWM1 high-side / GPIO |
| Pin 25 | PWM1L/RE1 β Motor-control PWM1 low-side / GPIO |
| Pin 26 | PWM2H/RE2 β Motor-control PWM2 high-side / GPIO |
| Pin 27 | PWM2L/RE3 β Motor-control PWM2 low-side / GPIO |
| Pin 28 | AVSS β Analog ground |
Typical Applications
DSPIC30F4012-20I/SO is suitable for 6 applications: BLDC / PMSM Motor Control, Digital Power Factor Correction (PFC), Sensorless Fan / Pump Drive, Uninterruptible Power Supply (UPS) and Inverter Control, Industrial Sensor Signal Conditioning, Automotive Body and Comfort Modules.
BLDC / PMSM Motor Control
The DSPIC30F4012-20I/SO's 20 MIPS DSP engine, 6-channel motor-control PWM and 6-channel 10-bit 500 ksps ADC make it a natural fit for brushless DC and permanent-magnet synchronous motor field-oriented control. The 48 KB Flash holds a complete FOC state-machine plus speed/torque PI loops and the 2 KB SRAM buffers the Park/Clarke transform intermediates without DMA overhead. The single-cycle MAC and 40-bit accumulators let the firmware compute one FOC iteration in well under 1 us, so a 20 kHz PWM loop closes with margin. Designers typically pair the device with an IRAMS10UP60B or gate-driver stage and a Hall/encoder sensor interface on the 20 available I/O pins.
Recommended
Digital Power Factor Correction (PFC)
The DSPIC30F4012-20I/SO is well suited to boost PFC front ends in 100 W to 1 kW SMPS designs thanks to its 50 ns instruction cycle, on-chip 500 ksps ADC and PWM peripherals. The DSP engine performs average-current-mode control with harmonic compensation in real time, while the 48 KB Flash absorbs the lookup tables, soft-start ramp and protection state machines. The 3.0-5.5 V supply range lets the controller run directly from the 5 V auxiliary rail that also feeds housekeeping logic. PCB layout uses the SOIC-28 wide footprint for clean separation between the analog AVSS/AVDD and digital VDD domains.
Recommended
Sensorless Fan / Pump Drive
Sensorless BLDC fans and pumps rely on back-EMF zero-cross detection computed in firmware, and the DSPIC30F4012-20I/SO has just enough MIPS and ADC bandwidth to do this on low-cost hardware. The 1 KB EEPROM stores calibration constants for the back-EMF threshold and the motor start-up ramp profile, while the 48 KB Flash hosts the sensorless state machine, commutation lookup and stall-detection logic. UART and CAN peripherals enable telemetry reporting of RPM, current and fault flags to the host ECU. The industrial -40 C to +85 C temperature grade covers HVAC, white-goods and outdoor-pump enclosures.
Recommended
Uninterruptible Power Supply (UPS) and Inverter Control
Small single-phase UPS and solar micro-inverter designs use the DSPIC30F4012-20I/SO as the main controller for SPWM generation, grid-synchronization and MPPT. The 6-channel PWM is partitioned as 3 pairs for full-bridge SPWM, while the on-chip ADC samples the grid voltage, current and PV input. The DSP engine implements the proportional-resonant current controller and the phase-locked loop in software, removing the need for an external PLL chip. The 28-pin SOIC wide package survives the high-temperature environments of inverter enclosures and the 5 V tolerance allows direct interface to legacy analog gate drivers.
Recommended
Industrial Sensor Signal Conditioning
The DSPIC30F4012-20I/SO is a strong fit for industrial sensor hubs where 4-20 mA / 0-10 V analog inputs must be digitized, filtered, linearized and pushed over CAN or UART. The 10-bit ADC, 2 KB SRAM and CAN peripheral cover typical 8-16 channel acquisition modules, and the DSP engine runs biquad IIR filters on each sample to remove 50/60 Hz line noise. The 1 KB EEPROM stores per-channel calibration coefficients, and the 28-pin SOIC wide package gives ample ground pins for ADC reference integrity. The industrial temperature range supports outdoor panel installations.
Recommended
Automotive Body and Comfort Modules
The DSPIC30F4012-20I/SO is used in non-safety automotive body controllers such as window lift, seat control and HVAC flap actuators, where its CAN bus peripheral integrates directly with the vehicle network. The 20 MIPS DSP engine drives small brushed and brushless DC motors for seat positioning and mirror adjustment, while the ADC reads current sense for stall detection. The 5 V tolerance interfaces directly to legacy 5 V sensor supplies still common in body-electronics domains. Designers targeting AEC-Q100 must select the automotive-graded dsPIC33F variant; the 'I' industrial grade part is widely used for non-safety automotive aftermarket and farm-equipment modules.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC30F4012-20I/SO β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC30F4012-30I/SO | DSPIC30F4012T-20I/SO | DSPIC30F4012-20I/SP | DSPIC30F4012-20E/SO | DSPIC30F4012-30E/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin SOIC wide (SO) | 28-pin SOIC wide (SO) - same | 28-pin SOIC wide (SO) - same | 28-pin SPDIP (SP) - same pinout, through-hole | 28-pin SOIC wide (SO) - same | 28-pin SOIC wide (SO) - same |
| Maximum Throughput | 20 MIPS | 30 MIPS | 20 MIPS | 20 MIPS | 20 MIPS | 30 MIPS |
| Flash Memory | 48 KB | 48 KB | 48 KB | 48 KB | 48 KB | 48 KB |
| Temperature Grade | Industrial -40C to +85C ('I') | Industrial -40C to +85C ('I') | Industrial -40C to +85C ('I') | Industrial -40C to +85C ('I') | Extended -40C to +125C ('E') | Extended -40C to +125C ('E') |
| Shipping Media | Tube | Tube | Tape & Reel | Tube | Tube | Tube |
| Pin-to-pin PCB Compatible | Yes (reference) | Yes | Yes | Yes (through-hole footprint) | Yes | Yes |
| RoHS Compliance | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Key Differentiators
- 5 V-tolerant I/O on a true DSP+MCU hybrid core (vs dsPIC33F (3.3 V only))
- On-chip motor-control PWM with dedicated fault inputs (vs PIC24F general-purpose MCU)
- Single-cycle 16x16 MAC with 40-bit accumulator (vs ARM Cortex-M0 MCU at same MHz)
Design Notes
Decouple the DSPIC30F4012-20I/SO with a 100 nF ceramic capacitor placed within 5 mm of each VDD pin and a single 10 uF bulk tantalum or ceramic on the supply rail. The analog AVSS/AVDD pair must be decoupled with a separate 100 nF capacitor, and AVSS should be tied to VSS at a single point near the IC to avoid ground-loop noise coupling into the ADC. A ferrite bead between digital and analog VDD traces is recommended when the ADC samples small signals near the switching nodes.
Route the PWM output pairs (PWM1H/L, PWM2H/L) as adjacent parallel traces with matched length to within 2 mm to keep the high-side / low-side switching edges aligned. Keep the PWM traces away from the analog AN0-AN5 inputs by at least 5 mm or use a ground-guard trace between them. The ICSP/PGD-PGC pair should be brought out to a 6-pin header or tag-connect footprint for in-circuit debug and Flash programming without disturbing the board layout.
Do not leave the MCLR pin floating - tie it to VDD through a 10 kohm pull-up and a 100 nF decoupling capacitor to ground so that noise on the supply does not spuriously reset the DSC. Configure unused I/O pins as outputs driving low (not as inputs) to avoid unwanted current draw through the input buffer. When migrating from dsPIC30F4011 to dsPIC30F4012 firmware, verify the Flash page erase size still matches the linker script; the 4011 has 16 KB / 4012 has 48 KB but both use the same erase-page architecture so binary compatibility is preserved.
Compliance Information
ROHS3 Compliant per distributor listing (globalspec.com). Industrial temperature grade 'I' is not AEC-Q100 qualified - choose dsPIC33F automotive variants for AEC-Q100 applications. Lead-free confirmed by Microchip product page. REACH status compliant per Microchip environmental statement.
