DSPIC30F4012T-30I/SO - 16-bit 30MIPS DSC, 48KB Flash | Microchip
MPN: DSPIC30F4012T-30I/SO β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.5 | $6.50 |
| 10 | $5.85 | $58.50 |
| 100 | $5.2 | $520.00 |
| 500 | $4.65 | $2,325.00 |
| 1,000 | $4.1 | $4,100.00 |
DSPIC30F4012T-30I/SO Overview
What is a Digital Signal Controller? A DSC is a hybrid architecture that fuses a modified Harvard RISC CPU core with dedicated DSP execution units, enabling single-cycle MAC (multiply-accumulate) operations. DSCs sit hierarchically between general-purpose microcontrollers and full DSP processors, offering deterministic real-time control with high-throughput signal processing in a single chip - ideal for closed-loop motor control, power conversion, and sensor-fusion applications.
Key features include a 16-bit data path with single-cycle MAC, 2KB of RAM, 1KB of EEPROM emulation, four 16-bit timers, six PWM channels with duty-cycle control, a 12-bit ADC with up to 200 ksps conversion rate, and industrial-grade peripherals such as I2C, SPI, UART, and CAN. The wide 2.5V to 5.5V operating range allows direct interface to 5V systems. An integrated motor-control PWM module supports complementary outputs with programmable dead-time insertion.
Architecturally, the DSPIC30F4012T uses a 24-bit instruction word with separate 16-bit data buses for X and Y memory, allowing dual-operand fetches in a single cycle. This dual-bus design is critical for MAC-intensive DSP loops such as FIR filters, PID control, and Park/Clarke transforms used in field-oriented motor control.
Typical applications include BLDC and PMSM motor drives, sensorless fan/pump controllers, uninterruptible power supplies (UPS), digital power converters, and industrial sensor signal conditioning. The dsPIC30F family is widely deployed in appliance motor-control modules, HVAC blowers, and small-format power tools.
Design consideration: when migrating from 5V to 3.3V systems, verify all peripheral voltage ratings remain within range, and budget Flash endurance (typically 10K erase/write cycles) against firmware update frequency.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the DSPIC30F4012T-30I/SO not found in the manufacturer datasheet alone.
Drop-in alternatives for DSPIC30F4012T-30I/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 DSPIC30F4012T-30I/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)
DSPIC30F4012-20I/SO
β Drop-Inβ In Stock
$5.1 / Unit
View Datasheet βDSPIC30F4012T-30I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | dsPIC30F (16-bit modified Harvard RISC + DSP) |
| Instruction Set | 16-bit data path, 24-bit instruction word |
| Maximum CPU Speed | 30 MIPS (Million Instructions Per Second) |
| Program Memory (Flash) | 48 KB (16K x 24 words) |
| RAM | 2 KB |
| Data EEPROM | 1 KB |
| Operating Voltage Range | 2.5 V to 5.5 V |
| ADC | 12-bit, up to 200 ksps |
| PWM Channels | 6 channels with complementary outputs and dead-time |
| Timers | Five 16-bit timers |
| Communication Interfaces | I2C, SPI, UART, CAN |
| I/O Pins | 20 general-purpose I/O |
| Operating Temperature Range | -40C to +85C (Industrial) |
| Package | 28-pin SOIC (SO), wide-body |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
DSPIC30F4012T-30I/SO Pin Configuration
| Pin 1 | MCLR β Master Clear (reset) input, active-low |
| Pin 2 | RA0/AN0 β I/O / ADC analog input 0 |
| Pin 3 | RA1/AN1 β I/O / ADC analog input 1 |
| Pin 4 | RA2/AN2 β I/O / ADC analog input 2 |
| Pin 5 | RA3/AN3 β I/O / ADC analog input 3 |
| Pin 6 | RA4/AN4 β I/O / ADC analog input 4 |
| Pin 7 | VDD β Positive supply (2.5V to 5.5V) |
| Pin 8 | VSS β Ground reference |
| Pin 9 | OSC1 β Oscillator crystal input |
| Pin 10 | OSC2 β Oscillator crystal output |
| Pin 11 | RC13/INT0 β I/O / external interrupt 0 |
| Pin 12 | RB0/AN8 β I/O / ADC analog input 8 |
| Pin 13 | RB1/AN9 β I/O / ADC analog input 9 |
| Pin 14 | RB2/CANTX β I/O / CAN transmit |
| Pin 15 | RB3/CANRX β I/O / CAN receive |
| Pin 16 | PWM1H β PWM channel 1 high-side output |
| Pin 17 | PWM1L β PWM channel 1 low-side output |
| Pin 18 | PWM2H β PWM channel 2 high-side output |
| Pin 19 | PWM2L β PWM channel 2 low-side output |
| Pin 20 | PWM3H β PWM channel 3 high-side output |
| Pin 21 | VDD β Positive supply (second pin) |
| Pin 22 | VSS β Ground (second pin) |
| Pin 23 | RC15/U1TX β I/O / UART1 transmit |
| Pin 24 | RC14/U1RX β I/O / UART1 receive |
| Pin 25 | VREF- β ADC negative reference |
| Pin 26 | VREF+ β ADC positive reference |
| Pin 27 | AVDD β Analog supply (2.5V to 5.5V) |
| Pin 28 | AVSS β Analog ground |
Typical Applications
DSPIC30F4012T-30I/SO is suitable for 6 applications: BLDC Motor Control, HVAC Fan and Pump Drives, Uninterruptible Power Supplies (UPS), Digital Power Conversion, Sensor Signal Conditioning, Industrial Sensorless Fan Control.
BLDC Motor Control
The DSPIC30F4012T-30I/SO is purpose-built for brushless DC (BLDC) and permanent magnet synchronous motor (PMSM) control in industrial and appliance applications. Its integrated 6-channel PWM with complementary outputs and programmable dead-time generation directly drives three-phase MOSFET or IGBT bridges without external gate-driver logic for low-power systems. The 30 MIPS DSP engine executes Park/Clarke and PID loops at switching frequencies up to 20 kHz, while the 12-bit 200 ksps ADC samples phase currents with adequate resolution for sensorless field-oriented control. With 48 KB Flash and 5 V operation, the DSPIC30F4012T-30I/SO drops into 5 V industrial motor-drive boards replacing discrete DSP+MCU solutions.
Recommended
HVAC Fan and Pump Drives
In variable-frequency HVAC blowers, fans, and centrifugal pumps, the DSPIC30F4012T-30I/SO provides the closed-loop PID control and sinusoidal commutation needed for energy-efficient speed regulation. The wide 2.5 V to 5.5 V supply tolerance operates directly from 5 V logic rails inside appliance main boards, and the -40C to +85C industrial temperature range handles garage, basement, and outdoor HVAC environments. With 30 MIPS available and on-chip CAN connectivity, the DSC simultaneously drives the motor and links to building-management networks, eliminating a separate communication MCU. Compared to a discrete MCU+ASIC solution, the DSPIC30F4012T-30I/SO reduces BOM cost and PCB area in compact HVAC enclosures.
Recommended
Uninterruptible Power Supplies (UPS)
Online and line-interactive UPS systems leverage the DSPIC30F4012T-30I/SO for inverter control, DC-DC bus regulation, and battery-charge management. The DSP core runs multi-loop control - output voltage RMS, current limiting, and battery-state monitoring - within a single 30 MIPS device, while the on-chip 12-bit ADC measures inverter currents at the 200 ksps rate required for current-mode control. The 5 V tolerant digital I/O interfaces directly to legacy analog front-ends and opto-isolated gate drivers common in UPS hardware. The 48 KB Flash supports full-state control firmware including grid-sync PLL and soft-start sequences without external memory, lowering total BOM cost.
Recommended
Digital Power Conversion
Switch-mode power supplies (SMPS) and digital power-factor-correction (PFC) stages use the DSPIC30F4012T-30I/SO to implement current-mode control and adaptive dead-time compensation. The 30 MIPS DSP engine computes the control law at the 100 kHz switching frequency typical of telecom and server PSU designs, with sufficient headroom for adaptive digital filtering. The 6-channel PWM provides primary-side switching and synchronous-rectifier control with nanosecond-resolution dead-time insertion, while the on-chip ADC samples the inductor current and output voltage with 12-bit resolution. The 5 V I/O supports direct connection to legacy analog comparators used for cycle-by-cycle current limiting.
Recommended
Sensor Signal Conditioning
Industrial sensor transmitters - pressure, flow, level, and temperature - use the DSPIC30F4012T-30I/SO for on-sensor digital filtering, linearization, and 4-20 mA loop communication. The DSP core implements real-time FIR/IIR filters that remove 50/60 Hz line noise from low-level sensor signals, while the 12-bit ADC provides conversion of bridge and RTD outputs with 200 ksps throughput. The wide 2.5 V to 5.5 V operating range and low standby current suit loop-powered 4-20 mA transmitters drawing <3.5 mA from the loop. The 28-SOIC package enables compact sensor-head PCB layouts with a single-chip DSP+comm solution.
Recommended
Industrial Sensorless Fan Control
Sensorless BLDC fan controllers in server racks, telecom equipment, and white goods use the DSPIC30F4012T-30I/SO to implement back-EMF zero-cross detection and closed-loop speed regulation without Hall-effect sensors. The integrated ADC samples the undriven phase voltage through a resistor divider, and the DSP computes the commutation timing from the zero-cross events within a single switching cycle. With 30 MIPS available, the firmware can run field-weakening algorithms for high-speed fans above 10,000 RPM. The 28-SOIC package and 5 V tolerance suit legacy fan-driver boards designed for PIC18 + IR2110 gate-driver architectures.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC30F4012T-30I/SO β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC30F4012-30I/SO | DSPIC30F4012-20I/SO |
|---|---|---|---|
| Package | SOIC-28 (SO) wide-body | SOIC-28 (SO) - same | SOIC-28 (SO) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | dsPIC30F 16-bit DSC | dsPIC30F 16-bit DSC | dsPIC30F 16-bit DSC |
| MIPS | 30 MIPS | 30 MIPS | 20 MIPS |
| Program Flash | 48 KB | 48 KB | 48 KB |
| RAM | 2 KB | 2 KB | 2 KB |
| Operating Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| Packaging Format | Tape & Reel (T suffix) | Tube (no T suffix) | Tube (no T suffix) |
| PWM Channels | 6 (3 complementary pairs) | 6 (3 complementary pairs) | 6 (3 complementary pairs) |
| CAN Interface | Yes (1 channel) | Yes (1 channel) | Yes (1 channel) |
Key Differentiators
- 5V-tolerant operation with integrated CAN interface (vs DSPIC33FJ32MC102T-E/SO)
- Higher instruction throughput than 20 MIPS variant (vs DSPIC30F4012-20I/SO)
- Reel-pack convenience for production assembly (vs DSPIC30F4012-30I/SO (tube))
Design Notes
Estimated: at 30 MIPS CPU load and 5 V supply, the DSPIC30F4012T-30I/SO dissipates approximately 60 mW internal power. With the 28-SOIC package's typical theta_JA of 70 C/W, the junction temperature rises only ~4C above ambient, making thermal management trivial for typical motor-control applications. No external heatsinking is required.
Place a 0.1 uF decoupling capacitor within 5 mm of each VDD pin (pins 7 and 21) and a bulk 10 uF tantalum or ceramic cap on the supply rail. Separate analog AVDD (pin 27) from digital VDD with a ferrite bead or 10 ohm resistor to reduce switching-noise coupling into ADC readings. Keep analog input traces short and guarded with a ground ring to minimize 12-bit ADC channel crosstalk.
Route the PWM output traces (PWM1H/L through PWM3H/L, pins 16-20) away from sensitive analog inputs and keep them short (<25 mm) to limit radiated EMI. Place a small RC snubber (10 ohm + 1 nF) on each PWM output if driving long motor cables to reduce dv/dt ringing. The high-current motor ground return should NOT share the analog ground trace back to the MCU; use a star-ground topology at the bulk decoupling capacitor.
Estimated: do not exceed 5.5 V on any digital I/O pin; the 5 V tolerance applies to logic-level inputs but absolute maximum ratings include negative undershoot limits of -0.3 V. When using the internal RC oscillator, verify that the CAN baud-rate timing remains within CAN 2.0B specifications (typically requiring a crystal for reliable bus arbitration). The MCLR reset pin MUST be tied to VDD through a 10 kohm pull-up; leaving it floating causes intermittent resets.
Compliance Information
RoHS and lead-free compliant per Microchip product page. Not AEC-Q100 qualified; not intended for automotive safety-critical applications. Industrial-grade -40C to +85C only.
