Texas Instruments DFDF2812ZHHAR

Overview

DFDF2812ZHHAR from Texas Instruments is a 150-MHz C28x-core digital signal processor optimized for real-time motor control and power electronics applications, featuring 128K × 16 flash memory, dual 32-bit CPU timers, 12-bit 16-channel ADC with 80-ns conversion time, and integrated eCAN, SPI, two SCIs, and McBSP peripherals. It operates at 1.9-V core voltage and supports external memory interface (XINTF) for system expansion.

For engineers reviewing the DFDF2812ZHHAR datasheet, DFDF2812ZHHAR pinout, DFDF2812ZHHAR application, or DFDF2812ZHHAR equivalent, key selection considerations include its 179-ball MicroStar BGA package (ZHH), 12.0 mm × 12.0 mm footprint, –40°C to 85°C industrial temperature range, XINTF bus support, and code-security module protecting flash/SARAM/OTP against reverse engineering.

Technical Context

The DFDF2812ZHHAR implements the TMS320C28x 32-bit CPU with Harvard architecture, atomic operations, and unified memory model enabling efficient C/C++ execution. Its peripheral set includes two Event Managers (EVA/EVB) with PWM, capture, and QEP functions, plus a dedicated Peripheral Interrupt Expansion (PIE) block routing 45 interrupts to the CPU.

System-level timing is managed by an on-chip oscillator and PLL-based clock module generating SYSCLKOUT up to 150 MHz; XCLKOUT provides programmable divided clocks (×1, ÷2, ÷4) for external wait-state generation. The device supports little-endian data format and includes watchdog timer, low-power IDLE/STANDBY/HALT modes, and JTAG boundary-scan per IEEE 1149.1.

Key Specifications

Pinout & Package

DFDF2812ZHHAR uses a 179-ball MicroStar BGA package (ZHH) with 12.0 mm × 12.0 mm body size and 0.8-mm ball pitch. Ball assignments follow TI's standardized ZHH layout for F2812 devices.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital signal processor applications.

Compared with TMS320F28335PGFA and TMS320F280049CPMQR, DFDF2812ZHHAR uniquely balances 150-MHz deterministic control, XINTF expandability, and industrial-grade security-making it optimal for legacy-compatible, memory-intensive motor control deployments requiring long-term supply stability.

Availability

DFDF2812ZHHAR is available at Aetrix Electronics and suitable for motor drives, industrial power converters, electric vehicle onboard chargers, and factory automation motion controllers requiring stable component supply across extended product lifecycles.

Supply support for DFDF2812ZHHAR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.

The TMS320F281x series was designed specifically for real-time digital control of power electronics, motor drives, and energy conversion systems-emphasizing deterministic timing, integrated analog peripherals, and code security.

FAQ

What is the maximum operating frequency of the DFDF2812ZHHAR?

The DFDF2812ZHHAR operates at a maximum CPU frequency of 150 MHz, delivering a 6.67-ns instruction cycle time. This speed is achieved with a 1.9-V core supply voltage and is fully supported across its specified industrial temperature range (–40°C to +85°C). All timing-critical peripherals-including the 12-bit ADC, ePWM modules, and XINTF interface-are characterized to function reliably at this rate.

Does DFDF2812ZHHAR support external memory expansion?

Yes, DFDF2812ZHHAR includes a full external interface (XINTF) supporting over 1M × 16 words of external memory. It features a 19-bit address bus (XA[18:0]), 16-bit data bus (XD[15:0]), three independent chip selects (XZCS0AND1, XZCS2, XZCS6AND7), and programmable read/write strobe timing-enabling direct connection to SRAM, Flash, or FPGA co-processors without glue logic.

How does the code-security module protect firmware in DFDF2812ZHHAR?

The DFDF2812ZHHAR implements a 128-bit security key/lock that prevents unauthorized read access to on-chip flash memory, OTP ROM, and L0/L1 SARAM blocks. Once enabled, it blocks JTAG-based memory dumps and inhibits execution of protected code outside the secure boot flow-effectively safeguarding proprietary motor control algorithms from reverse engineering or cloning.

Which communication interfaces are integrated into DFDF2812ZHHAR?

DFDF2812ZHHAR integrates Serial Peripheral Interface (SPI), two Serial Communications Interfaces (SCIA/SCIB) compatible with standard UART, Enhanced Controller Area Network (eCAN), and Multichannel Buffered Serial Port (McBSP). These interfaces support concurrent use-for example, eCAN for motor network commands, SPI for encoder feedback, and McBSP for audio or sensor data streaming.

What is the ADC performance specification for DFDF2812ZHHAR?

The DFDF2812ZHHAR features a 12-bit analog-to-digital converter with 16 input channels, two sample-and-hold circuits, and a minimum conversion time of 80 ns (12.5 MSPS). It supports both single and simultaneous sampling modes, enabling precise current/voltage measurement for vector control loops with less than 0.5 LSB integral nonlinearity across the full industrial temperature range.