TMS320F2812 - 150MHz C2000 DSP, 256KB Flash | TI | Motor Control
部品番号: TMS320F2812 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $24.5 | $24.50 |
| 10 | $22.1 | $221.00 |
| 100 | $19.6 | $1,960.00 |
| 500 | $17.4 | $8,700.00 |
| 1,000 | $15.3 | $15,300.00 |
TMS320F2812 概要
A digital signal controller (DSC) combines the processing throughput of a digital signal processor (DSP) with the peripheral integration of a microcontroller (MCU). The TMS320F2812 sits within the C2000 family of real-time control MCUs, itself part of the embedded processor and power-management hierarchy, and is optimized for closed-loop control where sensing, computation, and actuation must complete within one switching period.
Key features include the high-performance static CMOS C28x CPU at 150 MHz, 256 KB flash organized into four 8K x 16 sectors and six 16K x 16 sectors, 36 KB of SRAM, and low-power design with a 1.8-V core at 135 MHz, a 1.9-V core at 150 MHz, and 3.3-V I/O. The external memory interface (EMIF) allows expansion for data logging or oversized code images.
On the technical side, the device integrates two event managers (EVA/EVB) that generate up to 16 PWM channels with dead-band control, a 12-bit ADC for current and voltage sensing, general-purpose timers, and SCI, SPI, and CAN serial interfaces. JTAG boundary-scan support per IEEE Standard 1149.1-1990 enables board-level test and on-chip debug via the standard C2000 toolchain (Code Composer Studio and XDS emulators).
Typical applications include AC induction, BLDC, and stepper motor control, digital power supplies, solar and renewable-energy inverters, and industrial automation, where the fast ADC and event-manager PWM support tight real-time control loops at high switching frequencies.
Design consideration: decouple the 1.8-V/1.9-V core and 3.3-V I/O rails independently and follow the datasheet power-up sequencing to avoid latch-up; include the 14-pin JTAG header for flash programming.
This page synthesizes distributor data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with pricing as of 2026-08-30.
ドロップイン代替品: TMS320F2812 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: TMS320F2812 （同一形状・フットプリント） — 相違点: Package, Maximum Clock Frequency, Core Processor, Flash Memory, SRAM.
クイック比較ツール — 並列比較する代替部品を選択:
TMS320F2812PGFA
✅ ドロップイン✓ 在庫あり
$7.6 / 個
データシートを見る →TMS320F2812PGFQ
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TMS320F2812-EP
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TMS320F28335PGFA
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$14.2 / 個
データシートを見る →TMS320F28335PTPQ
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$35.2 / 個
データシートを見る →TMS320F28346-Q1
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
価格はお問い合わせください
データシートを見る →TMS320F2812 最大定格＆電気的特性
| Core Processor | C2000 C28x 32-bit fixed-point |
| 最大クロック周波数 | 150 MHz (6.67 ns cycle time) |
| Flash Memory | 256 KB (128K x 16) |
| SRAM | 36 KB |
| Core Supply Voltage | 1.8 V at 135 MHz; 1.9 V at 150 MHz |
| I/O Supply Voltage | 3.3 V |
| External Memory Interface | EMIF |
| ADC Resolution | 12-bit |
| PWM Channels | Up to 16 via two event managers (EVA/EVB) |
| Serial Interfaces | SCI, SPI, CAN |
| Timers | Multiple general-purpose timers |
| Debug / Test | JTAG boundary scan per IEEE Standard 1149.1-1990 |
| Flash Sector Organization | 4 x 8K x 16 sectors and 6 x 16K x 16 sectors |
| Process Technology | High-performance static CMOS |
| パッケージ | 176-pin LQFP (24 x 24 mm) |
| 実装タイプ | Surface Mount |
TMS320F2812 176-pin lqfp (24 x 24 mm) ピン配置ガイド
TMS320F2812 (176-pin lqfp (24 x 24 mm) パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: TMS320F2812.
詳細は データシート をご参照ください。
主な用途
TMS320F2812 の用途: 6 件s: AC Induction and BLDC Motor Control, Digital Power Supplies and Telecom Rectifiers, Solar and Renewable Energy Inverters, Industrial Automation and PLC I/O, Automotive Traction and Auxiliary Motor Drives, Data Acquisition and Test Instrumentation.
AC Induction and BLDC Motor Control
The TMS320F2812 fits motor control because its 150 MHz C28x core executes field-oriented control (FOC) mathematics within a single PWM period, while its two event managers (EVA/EVB) generate up to 16 PWM channels with hardware dead-band insertion for three-phase inverter bridges. The 12-bit ADC synchronizes current and position sampling to PWM edges, enabling closed-loop torque control at switching frequencies of 10-20 kHz without CPU overhead. Designers typically run sensorless or encoder-based FOC with the QEP unit; the deterministic fixed-point pipeline guarantees loop latency. Compared to general-purpose MCUs, the integrated PWM/ADC coupling removes external timing logic and jitter, improving current-loop bandwidth and acoustic performance in industrial drives and appliance motors.
おすすめ
Digital Power Supplies and Telecom Rectifiers
The TMS320F2812 suits digital power supply control because its 6.67-ns cycle time and event-manager PWM support phase-shifted full-bridge, LLC, and PFC topologies at 100 kHz-plus switching frequencies with precisely controlled dead time and phase shift. The 12-bit ADC samples output voltage and inductor current every switching cycle, and the fixed-point DSP core implements digital compensators (PID, 2p2z) deterministically. The EMIF can buffer logging data to external SRAM for test instrumentation. Using one TMS320F2812 to control both PFC and DC/DC stages replaces multiple analog controllers, reducing BOM count and enabling firmware-based soft-start, fault handling, and telemetry over the onboard CAN or SCI ports in rectifier and server-power designs.
おすすめ
Solar and Renewable Energy Inverters
Grid-tied solar inverters benefit from the TMS320F2812's combination of high-resolution PWM generation and fast 12-bit ADC sampling for MPPT (maximum power point tracking) and grid-current regulation. The dual event managers independently drive the DC/DC boost stage and the DC/AC inverter stage from one processor, keeping interstage synchronization tight and simplifying protection coordination. The 150 MHz core runs MPPT search algorithms, PLL grid synchronization, and current-loop control concurrently with margin. The CAN interface connects to inverter monitoring and SCADA systems. Because the fixed-point architecture is deterministic, anti-islanding detection and fault response times are predictable, which matters for grid-code compliance in photovoltaic string inverters and small wind converters.
おすすめ
Industrial Automation and PLC I/O
In industrial automation, the TMS320F2812 serves as a high-speed motion controller or intelligent I/O processor where deterministic pulse generation and fast feedback capture are required. Its GPIO and event managers output step/dir or PWM command signals for steppers and servos, while the QEP and capture units read quadrature encoders directly. The SCI and SPI interfaces link to host PLCs and human-machine interfaces, and CAN provides fieldbus connectivity in factory networks. The 256 KB flash stores protocol stacks plus motion profiles, and the EMIF permits external SRAM expansion for large recipe or trajectory tables. Because the C28x core is optimized for control math, trajectory interpolation and PID loops run without floating-point coprocessor dependencies.
おすすめ
Automotive Traction and Auxiliary Motor Drives
For automotive-adjacent drive electronics, TI offers the TMS320F2812PGFQ and TMS320F2812-Q1 flows of the same C28x die, allowing designs that began on the standard part to migrate to automotive-quality flows without a redesign. The 150 MHz core and 16-channel PWM generation handle electric power steering pumps, cooling fan modules, and auxiliary traction auxiliaries where sensorless FOC or block-commutated BLDC control is executed in firmware. The 12-bit ADC digitizes phase currents and DC-link voltage for protection and torque estimation. Note that AEC-Q100 qualification level must be verified against the specific ordering flow; newer Site-listed parts such as the TMS320F28P559SJ-Q1 offer current-generation automotive alternatives for new programs.
おすすめ
Data Acquisition and Test Instrumentation
The TMS320F2812 is used in custom data acquisition and test equipment because its EMIF external memory interface supports zero-wait-state SRAM or SDRAM buffering beyond the 36 KB internal SRAM, while the 12-bit ADC and timers provide synchronized multi-channel sampling. The 150 MHz fixed-point core performs on-the-fly DSP functions such as digital filtering, FFT windowing, and calibration math before results are offloaded via SPI or SCI to a host. JTAG per IEEE Standard 1149.1-1990 supports both boundary-scan board test and in-system code updates during instrument calibration. In stimulus-response instruments, event-manager PWM outputs drive actuators or power stages while the ADC captures responses, all phase-locked to a single timebase for coherent measurement.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: TMS320F2812 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | TMS320F2812PGFA | TMS320F2812-EP | TMS320F28335PGFA | TMS320F28346-Q1 |
|---|---|---|---|---|---|
| Package | 176-LQFP (24x24 mm) | 176-LQFP - same | 176-LQFP - same | 176-LQFP - same | 176-LQFP - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Core | C28x fixed-point, 150 MHz | C28x fixed-point, 150 MHz | C28x fixed-point, 150 MHz | C28x fixed-point + FPU, 150 MHz | C28x fixed-point + FPU, 150 MHz |
| Flash Memory | 256 KB (128K x 16) | 256 KB (128K x 16) | 256 KB (128K x 16) | 512 KB | 512 KB |
| Floating-Point Unit | No | No | No | Yes (single-precision FPU) | Yes (single-precision FPU) |
| Qualification Flow | Standard commercial | Standard commercial | Enhanced Product (harsh environments) | Standard commercial | AEC-Q100 automotive |
| New-Design Recommendation | No - TI recommends TMS320F28377S for new designs | No - legacy continuity only | No - legacy harsh-environment continuity | Preferred drop-in upgrade path | Preferred for new automotive programs |
主な差別化要因
- Largest flash in the F281x family with EMIF （vs TMS320F2812PGFA (as baseline) - vs TMS320F2810/F2811)
- Cost-optimized fixed-point architecture （vs TMS320F28335PGFA)
- Proven drop-in migration paths exist （vs TMS320F28346-Q1)
設計ノート
The TMS320F2812 needs dual rails: 1.8 V (135 MHz) or 1.9 V (150 MHz) for the core and 3.3 V for I/O and flash. Follow the TI datasheet power-up sequencing diagram so rails come up in the required order; incorrect sequencing can cause latch-up or excessive inrush. Place a 0.1 uF ceramic decoupling capacitor at every VDD/VDDIO pin pair plus bulk capacitance (10-47 uF) near each regulator. Estimated: at 150 MHz with peripherals active, core current is typically on the order of a few hundred milliamps - verify the exact figure against the datasheet consumption tables before sizing the core regulator.
Keep the 1.9 V core plane as a tight local pour beneath the 176-LQFP to minimize loop area and radiated noise from the fast internal clock. Route the 3.3 V flash/I/O rail with a dedicated 3.3 V plane separate from noisy system rails. Include the standard 14-pin JTAG header (TRST, TMS, TDI, TDO, TCK, EMU0, EMU1) even in production boards - field firmware updates via Code Composer Studio and XDS510/XDS100 emulators depend on it, and boundary-scan testing per IEEE 1149.1-1990 uses the same port.
Legacy pitfall: many F2812 designs rely on fixed-point IQmath libraries; when migrating to the pin-compatible TMS320F28335 or F28346, simply relinking without review can mix fixed-point and float code paths - re-verify control-loop timing after migration. Also, flash sector organization (4 x 8K + 6 x 16K) means code placement in linker CMD files must respect sector boundaries to avoid erase collisions during field updates. Finally, GPIO pin multiplexing on the 176-pin device is extensive; confirm each pin's GPAMUX/GPBMUX setting before assuming a peripheral signal is available on a given ball.
The EMIF on the TMS320F2812 drives external SRAM/SDRAM at system clock rates, so keep address/data bus traces under 10 cm when possible and series-terminate (22-33 ohm) clock and strobe lines to control reflections. On the 24 x 24 mm LQFP, the fine 0.5 mm pitch requires careful fanout; a single microvia-in-pdog breakout layer keeps stub lengths short. If XINTF/EMIF timing margin is tight at 150 MHz, verify setup/hold against the datasheet AC timing table at your actual operating frequency rather than assuming worst-case speed grades.
コンプライアンス情報
Compliance data not present in provided web data; verify RoHS/REACH status on the TI product page for the specific ordering flow (PGFA vs PGFQ vs Q1).
