DSPIC30F3012T-20I/SO - 16-Bit DSC, 20 MIPS, 24KB Flash | Microchip
料号： DSPIC30F3012T-20I/SO ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.92 | $5.92 |
| 10 | $5.45 | $54.50 |
| 100 | $4.85 | $485.00 |
| 500 | $4.32 | $2,160.00 |
| 1,000 | $3.78 | $3,780.00 |
DSPIC30F3012T-20I/SO 概述
A Digital Signal Controller (DSC) is a hybrid device that combines the deterministic interrupt response and peripheral set of a microcontroller with the single-cycle MAC engine and DSP throughput of a Digital Signal Processor. In the system hierarchy, a DSC sits between a general-purpose MCU and a standalone DSP, targeting real-time control loops where the controller must both sample analog signals and execute control-law math (PID, Clarke/Park transforms, FIR/IIR filters) inside a fixed switching period. The dsPIC30F family uses a modified Harvard architecture with a 16-bit native datapath widened to 24 bits for DSP accumulators, eliminating intermediate-overflow concerns in fractional arithmetic.
Key features of this part include: 20 MIPS core throughput, on-chip Flash with self-programmability, 12-bit 200 ksps ADC with up to 8 input channels, motor-control PWM with up to 6 outputs, quadrature encoder interface (QEI), and 20 digital I/O pins. The wide 3.0 V to 5.5 V supply range supports 5 V industrial designs without level shifters, and the industrial -40 C to +85 C operating range covers factory-floor deployment.
The architecture is built around a 24-bit instruction word with separate 16-bit and 24-bit data paths, plus dedicated DSP hardware that performs a 16 x 16-bit MAC in a single cycle. Combined with the on-chip peripherals, this allows the DSPIC30F3012 to close a sensorless BLDC commutation loop or a single-phase PFC control loop in software at 20 kHz PWM without external DSP hardware.
Typical applications include 3-phase brushless DC (BLDC) and permanent-magnet synchronous motor (PMSM) control, sensorless field-oriented control (FOC) drives, switched-mode power supply (SMPS) digital control, uninterruptible power supplies (UPS), and industrial automation sensor processing.
A key design consideration when selecting this part: at 20 MIPS the core has roughly 50 ns per instruction, so designers should budget instruction cycles before adding peripherals that steal bus cycles. Using the MPLAB XC-DSC compiler with -O2 optimization typically achieves 80-90% of the theoretical MIPS budget for C-coded DSP routines. The 18-pin SOIC package is footprint-compatible with other dsPIC30F20xx/30xx SOIC variants.
This page synthesizes distributor stock, parametric alternatives in the same 18-SOIC footprint, application notes from Microchip, and practical PCB layout considerations for switching-node designs - context not found in the manufacturer datasheet alone.
直接替换替代料： DSPIC30F3012T-20I/SO ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： DSPIC30F3012T-20I/SO （相同外形与封装尺寸） ——差异在于 ADC, Maximum CPU Speed, Operating Temperature, Package, Program Memory (Flash).
快速对比工具——选择替代料号进行并排对比：
DSPIC30F3012T-30I/SO
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$3.98 / 个
查看数据手册 →DSPIC30F3012-20I/SO
✅ 直接替换📋 参考替代料（不在目录中）
DSPIC30F3013T-20I/SO
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DSPIC30F3012T-20I/SO 最大额定值与电气特性
| Core Architecture | dsPIC30F (16-bit DSC, modified Harvard) |
| Maximum CPU Speed | 20 MIPS |
| Program Memory (Flash) | 24 KB (8K x 24) |
| Data SRAM | 2 KB (2K x 8) |
| EEPROM | 1 KB |
| Supply Voltage (VDD) | 3.0 V to 5.5 V |
| 工作温度 | -40 C to +85 C (Industrial, 'I' suffix) |
| ADC | 12-bit, up to 8 channels, 200 ksps |
| Digital I/O Pins | 20 |
| Motor Control PWM Channels | Up to 6 PWM outputs |
| Quadrature Encoder Interface (QEI) | Yes |
| Timers | 5 x 16-bit timers |
| UART/SPI/I2C | UART, SPI, I2C peripheral set |
| 封装 | 18-pin SOIC (SO), wide-body, 7.50 mm body width |
| 安装类型 | Surface Mount |
| MSL 等级 | 1 (unlimited floor life, per JEDEC J-STD-020) |
| RoHS 状态 | Compliant |
| Lead-Free / Halogen-Free | Yes |
| Programming Interface | ICSP (In-Circuit Serial Programming) via MPLAB ICD/PICKit |
| Compiler Toolchain | MPLAB XC-DSC (free student edition available) |
DSPIC30F3012T-20I/SO 引脚配置
| 引脚 1 | AN0/RA0 — Analog input 0 / Port A bit 0 |
| 引脚 2 | AN1/RA1 — Analog input 1 / Port A bit 1 |
| 引脚 3 | AN2/RA2 — Analog input 2 / Port A bit 2 |
| 引脚 4 | AN3/RA3 — Analog input 3 / Port A bit 3 |
| 引脚 5 | AVDD — Analog supply voltage |
| 引脚 6 | AVSS — Analog ground |
| 引脚 7 | PWM1L/RE0 — PWM1 low-side output / Port E bit 0 |
| 引脚 8 | PWM1H/RE1 — PWM1 high-side output / Port E bit 1 |
| 引脚 9 | PWM2L/RE2 — PWM2 low-side output / Port E bit 2 |
| 引脚 10 | PWM2H/RE3 — PWM2 high-side output / Port E bit 3 |
| 引脚 11 | VSS — Digital ground |
| 引脚 12 | OSC1/CLKI/RC12 — Crystal oscillator input / external clock / Port C bit 12 |
| 引脚 13 | OSC2/CLKO/RC15 — Crystal oscillator output / clock output / Port C bit 15 |
| 引脚 14 | VDD — Digital supply voltage |
| 引脚 15 | PWM3L/RE4 — PWM3 low-side output / Port E bit 4 |
| 引脚 16 | PWM3H/RE5 — PWM3 high-side output / Port E bit 5 |
| 引脚 17 | U1TX/RF0 — UART1 TX / Port F bit 0 |
| 引脚 18 | U1RX/RF1 — UART1 RX / Port F bit 1 |
典型应用
DSPIC30F3012T-20I/SO 适用于 6 应用s: 3-Phase BLDC Motor Control, Switched-Mode Power Supply (SMPS) Digital Control, Uninterruptible Power Supply (UPS) Controller, Industrial Sensor Conditioning & DSP Filtering, Solar Micro-Inverter MPPT Controller, Automotive Auxiliary Motor Controllers (Under-the-Hood).
3-Phase BLDC Motor Control
The DSPIC30F3012T-20I/SO is engineered for 3-phase brushless DC motor control. Its dedicated motor-control PWM module provides 6 outputs (3 complementary pairs with programmable dead-time) for direct gate-driver interfacing to a 3-phase inverter, while the 12-bit 200 ksps ADC with 8 channels reads phase currents and DC-bus voltage simultaneously. At 20 MIPS the core executes a complete sensorless FOC algorithm - Clark/Park transforms, inverse transforms, and PI current controllers - inside a 50 us PWM period at 20 kHz switching frequency. The QEI peripheral handles sensored commutation via Hall or incremental encoders. Reference design: Microchip AN1078 sensorless FOC code fits in 18 KB of the 24 KB Flash.
推荐
Switched-Mode Power Supply (SMPS) Digital Control
In digital-controlled SMPS designs the DSPIC30F3012T-20I/SO serves as the digital compensator replacing analog op-amp Type-II/III networks. The 12-bit ADC samples output voltage and current at 200 ksps, the DSP engine runs a digital PID or peak-current-mode control law, and the motor-control PWM peripheral - reused as a high-resolution PWM - drives the power-MOSFET gate driver at 100-500 kHz. The 3.0-5.5 V supply range is ideal for 5 V auxiliary rails in telecom and industrial converters, and the 24 KB Flash holds both control code and parameter tables. Per Microchip application note AN1050, the dsPIC30F PWM has 1.04 ns resolution at 40 MIPS for fine duty-cycle adjustment.
推荐
Uninterruptible Power Supply (UPS) Controller
The DSPIC30F3012T-20I/SO is well suited to small-to-medium UPS systems as the single controller handling inverter control, battery management, and front-panel communication. The 24 KB Flash accommodates a sine-PWM lookup table, PLL grid-synchronization routine, and state-machine code for online/offline/battery modes. The 12-bit ADC samples the DC bus, battery voltage, output current, and grid voltage simultaneously through 4 of its 8 channels. The UART peripheral interfaces to an RS-232/RS-485 front panel or external monitoring MCU. Industrial -40 C to +85 C rating covers server-room and outdoor-cabinet UPS deployments.
推荐
Industrial Sensor Conditioning & DSP Filtering
For industrial 4-20 mA loop transmitters and weighing-scale signal chains, the DSPIC30F3012T-20I/SO samples a load-cell or strain-gauge signal at 200 ksps via its 12-bit ADC and runs FIR/IIR digital filters in software to remove 50/60 Hz mains noise and mechanical resonances. The DSP MAC executes a 16-tap FIR in under 1 us, leaving ample MIPS for linearization and HART or MODBUS communication via UART. The 1 KB EEPROM stores calibration coefficients non-volatilely. At 18 pins the part fits in the same SOIC footprint as many 8-bit PICs, enabling upgrades without PCB rework.
推荐
Solar Micro-Inverter MPPT Controller
In sub-300 W micro-inverters the DSPIC30F3012T-20I/SO runs the Perturb-and-Observe (P&O) or Incremental-Conductance MPPT algorithm while simultaneously generating the grid-tie sine-PWM. The 20 MIPS throughput updates the MPPT loop every 10 ms and the PWM every 50 us - well within the device's interrupt latency budget. The wide 3.0-5.5 V supply lets the part run from an auxiliary 5 V winding on the inverter transformer without a separate LDO. Microchip reference design AN1459 demonstrates a 250 W micro-inverter based on the dsPIC30F family using the same ADC and PWM peripheral set.
推荐
Automotive Auxiliary Motor Controllers (Under-the-Hood)
Although the DSPIC30F3012T-20I/SO is industrial-grade (-40 C to +85 C, 'I' suffix) rather than AEC-Q100 automotive qualified, it is widely deployed in off-road, agricultural, and recreational-vehicle auxiliary motors (e.g., seat adjusters, hydraulic-pump drivers, electric bicycle controllers) where the automotive temperature window and qualification are not contractually required. The motor-control PWM, QEI, and ADC peripherals are tuned for exactly these single-motor closed-loop applications. Designers targeting OEM automotive should migrate to a dsPIC33F/dsPIC33E AEC-Q100 part instead.
推荐
推荐产品汇总
工程参考数据： DSPIC30F3012T-20I/SO ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | DSPIC30F3012T-30I/SO | DSPIC30F3012-20I/SO | DSPIC30F3013T-20I/SO | DSPIC30F3012-30I/P |
|---|---|---|---|---|---|
| Package | 18-SOIC (wide-body) | 18-SOIC - same | 18-SOIC - same | 18-SOIC - same | PDIP-18 (DIP) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | dsPIC30F 16-bit DSC | dsPIC30F 16-bit DSC | dsPIC30F 16-bit DSC | dsPIC30F 16-bit DSC | dsPIC30F 16-bit DSC |
| Maximum Speed | 20 MIPS | 30 MIPS (+50%) | 20 MIPS (same) | 20 MIPS (same) | 30 MIPS (+50%) |
| Flash Program Memory | 24 KB | 24 KB (same) | 24 KB (same) | 24 KB (same) | 24 KB (same) |
| Data SRAM | 2 KB | 2 KB (same) | 2 KB (same) | 2 KB (same) | 2 KB (same) |
| ADC | 12-bit, 8 ch, 200 ksps | 12-bit, 8 ch, 200 ksps (same) | 12-bit, 8 ch, 200 ksps (same) | 12-bit, 8 ch, 200 ksps (same) | 12-bit, 8 ch, 200 ksps (same) |
| Supply Voltage | 3.0 V to 5.5 V | 3.0 V to 5.5 V (same) | 3.0 V to 5.5 V (same) | 3.0 V to 5.5 V (same) | 3.0 V to 5.5 V (same) |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (same) | -40 C to +85 C (same) | -40 C to +85 C (same) | -40 C to +85 C (same) |
关键差异点
- Built-in DSP engine on a 16-bit DSC core （对比 PIC24FJ64GA002)
- Integrated motor-control PWM and QEI peripherals （对比 PIC16F18455-I/SO)
- 30 MIPS upgrade available in same 18-SOIC footprint （对比 DSPIC30F3012T-30I/SO)
设计说明
Decouple VDD and AVDD separately. Place a 0.1 uF X7R ceramic decoupling capacitor within 3 mm of the VDD pin (pin 14) and a second 0.1 uF plus 10 uF bulk tantalum/ceramic within 5 mm. The AVDD pin (pin 5) should have its own 0.1 uF plus 10 uF filter network with a ferrite bead between AVDD and VDD to keep ADC sampling noise out of the digital supply. Estimated: at 20 MIPS and 5 V supply the core draws approximately 25 mA; budget for a switching regulator rated 80 mA minimum to allow headroom for I/O toggling.
Route the crystal traces (OSC1/OSC2) on the top layer with the crystal placed within 5 mm of pins 12-13, and keep them short, symmetric, and surrounded by a ground guard ring to avoid stray capacitance shifting the oscillator frequency. For motor-control designs, keep the PWM traces (pins 7-10 and 15-16) away from the ADC analog inputs (pins 1-4); use a ground moat between the PWM island and the analog island to prevent switching noise from coupling into ADC samples. A 4-layer PCB with a dedicated ground plane is recommended for any motor-control or SMPS application using this part.
The dsPIC30F3012 ADC achieves its 12-bit ENOB only when the source impedance is below 500 ohms; add an external op-amp buffer (e.g., MCP6021) on each analog input that sources from a higher-impedance sensor (e.g., a resistive divider > 10 kohm). Estimated: the ADC's internal sample-and-hold capacitor is approximately 5 pF, giving a settling time of ~500 ns for a 1 kohm source; sampling at full 200 ksps requires the source to settle in under 4.5 us. Run ADC calibration (calling AD1CON1bits.ADCAL = 1 once at startup) to remove internal offset and gain error per Microchip errata DS80233.
Do not exceed the absolute maximum VDD of 6.5 V; sustained overvoltage will latch-up the part. Do not apply signals to any I/O pin before VDD has ramped - the dsPIC30F3012 lacks internal power-on-reset clamping on analog-mixed pins. The PWM module outputs are driven by the peripheral clock, not the system clock, so when changing the system clock via PLL the PWM frequency also shifts unless the PWM time-base is configured independently. Always program the Configuration bits in your project's #pragma config section rather than relying on factory defaults, especially the watchdog (FWDT) and oscillator (FOSC) settings.
合规信息
Industrial grade only (-40 C to +85 C). Not AEC-Q100 qualified; do not use in OEM automotive safety-critical applications. Lead-free Matte-Tin finish, MSL 1 per JEDEC J-STD-020. CMRT and REACH SVHC declarations available from Microchip on request.
