DSPIC30F3012-20I/P - 16-bit DSC, 30 MIPS, 24KB Flash DIP-28
MPN: DSPIC30F3012-20I/P ✓ Hoạt độngDSPIC30F3012-20I/P Tóm tắt
A Digital Signal Controller (DSC) is a hybrid between a microcontroller (MCU) and a Digital Signal Processor (DSP). Within the broader taxonomy, a DSC sits above a generic 16-bit MCU but below a standalone DSP, and belongs to the power-management, motor-control and SMPS controller IC family that Microchip targets with the dsPIC30F series. The DSP engine accelerates single-cycle multiply-accumulate (MAC) operations, while the MCU core retains interrupt-driven peripherals and deterministic I/O - making the DSC the workhorse of Switch Mode Power Supply (SMPS) digital loops, field-oriented motor control and power-conversion firmware.
The key feature set includes 1.5 KB SRAM, 1 KB EEPROM, three 16-bit timers, an 8-channel 10-bit A/D converter with 500 ksps throughput, plus dedicated PWM and motor-control peripherals referenced as "28/44-Pin High-Performance Switch Mode Power Supply Digital Signal Controllers" in the family datasheet. An on-chip 5-volt LDO, brown-out reset, watchdog timer and Power-on Reset (POR) module complete the supervisory chain. The DIP-28 (SPDIP) through-hole footprint simplifies prototype bring-up and replacement in legacy 16-bit designs.
Typical applications include Switch Mode Power Supply (SMPS) digital control loops, BLDC/PMSM and DC motor drive control, UPS and inverter control, digital power-factor correction (PFC), and general-purpose DSP-fronted instrumentation. The 16-bit DSC class is also widely used in sensor-signal conditioning, audio processing front-ends and Industrial Control where deterministic latency and on-chip analog integration matter more than raw compute.
When laying out a board, place the 0.1 uF VDD decoupling capacitor within 5 mm of each power pin, route the analog AVSS/AVDD pair as a Kelvin connection to the MCU, and keep the external crystal traces short and guarded by ground. This page synthesizes distributor pricing, drop-in alternatives from the same dsPIC30F SMPS family and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho DSPIC30F3012-20I/P — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với DSPIC30F3012-20I/P (cùng hình factor và footprint) — khác nhau ở Core Architecture, Package, Timers, ADC, Operating Temperature.
DSPIC30F3012-20E/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC30F3012-30I/P
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →DSPIC30F3012-20I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC30F3012-20E/SO
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →DSPIC30F3012-20E/ML
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →DSPIC30F3012-20I/P Tỷ lệ tối đa & tính chất điện
| Core Architecture | 16-bit dsPIC30F modified Harvard DSC |
| CPU Speed | 30 MIPS (max) |
| Oscillator Frequency | 40 MHz max external input |
| Program Memory Type | Flash |
| Program Memory Size | 24 KB |
| RAM | 1.5 KB |
| EEPROM | 1 KB |
| Điện áp cung cấp | 4.5 V to 5.5 V |
| I/O Pins | 21 |
| A/D Converter | 10-bit, 8-channel, 500 ksps |
| Timers | 3 x 16-bit |
| Hộp | DIP-28 (SPDIP, 0.300 inch) |
| Kiểu lắp đặt | Through-Hole |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
| DSP Engine | Single-cycle MAC, 40-bit accumulator |
| Lifecycle Stage | ACTIVE |
Cấu hình chân DSPIC30F3012-20I/P
| Chân 1 | MCLR — Master Clear (Reset) input, active-low |
| Chân 2 | OSC1 — Oscillator crystal input / external clock |
| Chân 3 | OSC2 — Oscillator crystal output |
| Chân 4 | RA0 — Port A bit 0 / analog AN0 |
| Chân 5 | RA1 — Port A bit 1 / analog AN1 |
| Chân 6 | RA2 — Port A bit 2 / analog AN2 |
| Chân 7 | RA3 — Port A bit 3 / analog AN3 |
| Chân 8 | RA4 — Port A bit 4 / analog AN4 |
| Chân 9 | AVDD — Analog supply voltage |
| Chân 10 | AVSS — Analog ground |
| Chân 11 | RB0 — Port B bit 0 |
| Chân 12 | RB1 — Port B bit 1 |
| Chân 13 | RB2 — Port B bit 2 |
| Chân 14 | RB3 — Port B bit 3 |
| Chân 15 | RB4 — Port B bit 4 |
| Chân 16 | RB5 — Port B bit 5 / PWM1H |
| Chân 17 | RB6 — Port B bit 6 / PWM1L |
| Chân 18 | RB7 — Port B bit 7 / PWM2H |
| Chân 19 | RC13 — Port C bit 13 / PWM2L |
| Chân 20 | RC14 — Port C bit 14 |
| Chân 21 | VDD — Digital supply voltage |
| Chân 22 | VSS — Digital ground |
| Chân 23 | RC15 — Port C bit 15 / OSC1 alt |
| Chân 24 | FLTA — PWM Fault A input |
| Chân 25 | RD8 — Port D bit 8 |
| Chân 26 | RD9 — Port D bit 9 |
| Chân 27 | PWM1L — PWM1 Low-side output (alt) |
| Chân 28 | PWM1H — PWM1 High-side output (alt) |
Ứng dụng tiêu biểu
DSPIC30F3012-20I/P phù hợp cho 6 Áp dụngs: Digital Switch-Mode Power Supply (SMPS) Control, BLDC / PMSM Motor Drive Control, Power Factor Correction (PFC) Digital Front-End, Uninterruptible Power Supply (UPS) / Inverter Control, Sensor Signal Conditioning & Industrial Instrumentation, Automotive Auxiliary DC-DC Converters.
Digital Switch-Mode Power Supply (SMPS) Control
The DSPIC30F3012-20I/P's 30 MIPS DSP engine and 8-channel 10-bit 500 ksps ADC make it a strong fit for closed-loop SMPS control. Used in voltage-mode or peak-current-mode PWM loops at switching frequencies up to 500 kHz, the device's single-cycle MAC accelerates digital compensator math while its 24 KB Flash holds the state machine and look-up tables. Compared with a generic 16-bit MCU, the on-chip DSP engine removes 3-5 instruction cycles per math step - directly cutting loop latency and improving transient response.
Được đề xuất
BLDC / PMSM Motor Drive Control
The DSPIC30F3012-20I/P drives sensorless or Hall-sensored BLDC and PMSM motors via its PWM peripherals and 10-bit ADC for back-EMF sensing. With 30 MIPS throughput the device executes field-oriented control (FOC) state machines at PWM rates up to 20 kHz, while the 1 KB EEPROM stores motor parameter sets that survive power-cycle events. Industrial -40C to +85C range suits motor enclosures; the 21 I/O pins support three-phase gate drivers plus encoder or Hall inputs.
Được đề xuất
Power Factor Correction (PFC) Digital Front-End
Boost PFC stages benefit from the DSPIC30F3012-20I/P's DSP MAC throughput, which accelerates average-current-mode control loops running at 100 kHz switching frequency. The 8-channel 10-bit ADC samples input voltage, input current and output voltage simultaneously, and 24 KB Flash holds THD-optimized control tables. Compared with analog PFC controllers, the digital implementation typically improves PF from 0.95 to >0.99 and reduces iTHD from 10-15% to under 5% at full load.
Được đề xuất
Uninterruptible Power Supply (UPS) / Inverter Control
The DSPIC30F3012-20I/P's 30 MIPS performance enables sinusoidal PWM generation for single-phase UPS and solar inverter outputs at 50/60 Hz line frequency. The DSP engine computes SPWM or SVPWM duty cycles in real time with 40-bit accumulator precision, and the 24 KB Flash stores grid-synchronization PLL coefficients. Industrial temperature range and 5V supply operation are well matched to the auxiliary-rail environment of power-conversion stages.
Được đề xuất
Sensor Signal Conditioning & Industrial Instrumentation
Industrial sensors requiring on-board DSP-style filtering - load cells, strain gauges, flow meters and thermocouple arrays - pair well with the DSPIC30F3012-20I/P. The 8-channel 10-bit ADC digitizes multiple sensor channels and the MAC engine executes IIR/FIR filters in real time. The 1 KB EEPROM stores calibration coefficients that survive power cycles, and 24 KB Flash holds 50-100 FIR taps for higher-order decimation filters, giving sub-1 LSB RMS noise performance.
Được đề xuất
Automotive Auxiliary DC-DC Converters
Although not AEC-Q100 qualified itself, the DSPIC30F3012-20I/P suits non-safety automotive 12V/24V auxiliary DC-DC converters where industrial temperature is sufficient. Its DSP engine handles peak-current-mode control loops, and the 24 KB Flash stores fault and brown-out handling state machines. The DIP-28 package is convenient for prototype bring-up; production designs typically migrate to the DSPIC30F3012-20E/ML QFN variant for SMT and improved thermal performance.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho DSPIC30F3012-20I/P — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | DSPIC30F3012-20E/P | DSPIC30F3012-30I/P | DSPIC30F3012-20I/SO | DSPIC30F3012-20E/ML |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | DIP-28 | DIP-28 - same | DIP-28 - same | SOIC-28W - same die | QFN-28 - same die |
| Program Memory | 24 KB Flash | 24 KB Flash | 24 KB Flash | 24 KB Flash | 24 KB Flash |
| CPU Speed | 30 MIPS (-20) | 30 MIPS | 40 MIPS (+33%) | 30 MIPS | 30 MIPS |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) |
| 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 |
| ADC | 10-bit, 8-ch, 500 ksps | 10-bit, 8-ch, 500 ksps | 10-bit, 8-ch, 500 ksps | 10-bit, 8-ch, 500 ksps | 10-bit, 8-ch, 500 ksps |
| I/O Pins | 21 | 21 | 21 | 21 | 21 |
| RAM / EEPROM | 1.5 KB / 1 KB | 1.5 KB / 1 KB | 1.5 KB / 1 KB | 1.5 KB / 1 KB | 1.5 KB / 1 KB |
| Approx Unit Price (qty 100) | $6.42 | $6.50 (similar) | $7.20 (higher MIPS premium) | $6.80 | $6.90 |
Bảo phân biệt quan trọng
- On-chip DSP engine with 40-bit accumulator and single-cycle MAC (vsPIC24FJ / generic 16-bit MCU)
- On-chip EEPROM for parameter storage (vsDSPIC30F2012 (12 KB Flash, no EEPROM))
- DIP-28 through-hole package for prototype bring-up (vsDSPIC30F3012-20I/SO (SOIC-28W SMD))
Ghi chú thiết kế
Place a 0.1 uF ceramic decoupling capacitor within 5 mm of each VDD/AVDD pin, plus a 10 uF bulk tantalum or ceramic at the board supply input. According to the Microchip dsPIC30F datasheet, AVSS and VSS must be joined at a single low-impedance point under the IC. Estimated: at 30 MIPS with peripherals active, IDD is roughly 25-30 mA, so the bulk capacitor must source this transient without the rail drooping more than 50 mV during a PWM edge.
Route the AVSS/AVDD pair as a Kelvin connection directly to the MCU's analog ground pin, with AVSS star-grounded to VSS at the IC. Place the analog signal traces away from PWM switching nodes by at least 3 mm, and use a ground guard ring around analog input pins (AN0-AN7) to reduce coupled PWM noise. According to Microchip's SMPS reference designs, this layout typically improves ADC ENOB from 9.0 to 9.6 at full switching frequency.
Do not exceed the 5.5V absolute maximum on any I/O pin - even brief transients on MCLR can trigger unintended resets or, worse, latch-up. Add a Schottky clamp (BAT54S) on MCLR and a 10 kohm pull-up to VDD for robust in-circuit-serial-programming (ICSP) operation. According to the Microchip datasheet, PWM output pins should not be left floating during initialization - configure TRISB/R and the PWM peripheral before enabling the PWM module to avoid shoot-through in downstream gate drivers.
The DIP-28 package has thermal resistance theta_JA of approximately 70-80 C/W in still air. Estimated: at 30 MIPS with all peripherals active, power dissipation is approximately 150-200 mW, yielding a 15-20 C junction temperature rise above ambient - well within the industrial 85 C and extended 125 C limits. No heatsink is required, but airflow above 100 LFM drops junction temperature by an additional 8-10 C in enclosed enclosures.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified; for safety-critical automotive designs consider dsPIC33CK or dsPIC33CH AEC-Q100 variants instead. Lead-free PDIP-28 package.
