Texas Instruments SMJ320F2812HFGM150

Overview

SMJ320F2812HFGM150 from Texas Instruments is a radiation-hardened, high-performance 32-bit C28x DSP optimized for real-time motor control and power electronics. It operates at 150 MHz (6.67-ns cycle time), integrates 128K × 16 Flash, 18K × 16 on-chip SARAM, dual 12-bit ADCs (16 channels, 80 ns conversion), two Event Managers (EVA/EVB), eCAN, and supports −55°C to 125°C operation in the 172-pin HFG ceramic quad flatpack.

For engineers reviewing the SMJ320F2812HFGM150 datasheet, SMJ320F2812HFGM150 pinout, SMJ320F2812HFGM150 application, or SMJ320F2812HFGM150 equivalent, key selection criteria include radiation tolerance, extended temperature support, deterministic real-time interrupt latency (PIE block with 45 peripheral interrupts), 128-bit code security, and compatibility with TMS320C24x source code for legacy motor control firmware migration.

Technical Context

The SMJ320F2812HFGM150 implements the TMS320C28x CPU core with Harvard bus architecture, atomic operations, and unified memory programming model. It features dynamic PLL ratio changes, on-chip oscillator, watchdog timer, and three 32-bit CPU timers - enabling precise timing control in closed-loop systems without external timing components.

Its dual Event Managers (EVA/EVB) provide 12 PWM outputs, 6 capture/QEP inputs, and trip-zone protection logic for IGBT gate drivers; the 12-bit ADC supports simultaneous sampling across two 8-channel multiplexers with two sample-and-hold circuits - critical for vector-controlled PMSM and induction motor drives requiring synchronized current sensing.

Key Specifications

Pinout & Package

SMJ320F2812HFGM150 uses a 172-pin ceramic quad flatpack (HFG) package with 0.635 mm pitch, hermetically sealed for high-reliability environments. Pin functions are defined per TI Data Manual SGUS053B, including dedicated analog power/ground pins (VDDA1/VSSA1/VDDAIO/VSSAIO), dual ADC input banks (ADCINA0–7 and ADCINB0–7), and multiplexed GPIO/peripheral signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SM320F2812HFGM150 and TMS320F28335PGFA, the SMJ320F2812HFGM150 uniquely combines radiation hardening, extended temperature range, and deterministic real-time interrupt handling - making it irreplaceable in mission-critical aerospace and defense platforms where failure is not an option.

Availability

SMJ320F2812HFGM150 is available at Aetrix Electronics and suitable for aerospace avionics, defense electronics, and nuclear instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing from authorized channels.

Supply support for SMJ320F2812HFGM150 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 specializing in analog, embedded processing, and digital signal processing technologies with over 50 years of innovation in high-reliability ICs.

The SMJ320F2812HFGM150 belongs to TI's C28x DSP product line, designed specifically for deterministic real-time control in motor drives, power converters, and industrial automation - with hardened variants meeting MIL-PRF-38535 Class V requirements.

FAQ

What is the maximum operating frequency and corresponding core voltage for SMJ320F2812HFGM150?

The SMJ320F2812HFGM150 operates at a maximum frequency of 150 MHz, requiring a 1.9-V core supply (VDD). At 135 MHz, it supports 1.8-V core operation. The 3.3-V I/O and 3.3-V Flash supplies remain constant across both speed grades. This dual-voltage design balances performance and power efficiency in high-reliability systems.

Does SMJ320F2812HFGM150 support simultaneous sampling across all 16 ADC channels?

No - the SMJ320F2812HFGM150 contains two independent 12-bit ADC modules (A and B), each with its own 8-channel multiplexer and sample-and-hold circuit. Simultaneous sampling is supported only within each group (ADCINA0–7 or ADCINB0–7), not across both groups. Cross-group synchronization requires software coordination via start-of-conversion triggers.

How does the 128-bit code security module protect firmware in SMJ320F2812HFGM150?

The 128-bit code security module in SMJ320F2812HFGM150 locks access to Flash, ROM, OTP, and L0/L1 SARAM blocks. When enabled, it prevents readback, erasure, or programming unless the correct 128-bit password is loaded into the security register. This thwarts firmware reverse engineering and unauthorized modification - essential for protecting proprietary motor control algorithms.

Can SMJ320F2812HFGM150 execute code directly from external memory via XINTF?

Yes - when configured in microprocessor mode (XMP/MC = high), the SMJ320F2812HFGM150 enables XINTF Zone 7 (16K × 16) for external program execution. The XINTF supports programmable wait states, read/write strobe timing, and individual chip selects - allowing seamless execution from external Flash or SRAM without CPU overhead.

What peripheral interrupt capability does SMJ320F2812HFGM150 provide for real-time control loops?

The SMJ320F2812HFGM150 features a Peripheral Interrupt Expansion (PIE) block that routes 45 peripheral interrupts to the CPU with low-latency vectoring. This includes ADC end-of-conversion, PWM timer overflows, capture events, CAN message reception, and external GPIO interrupts - enabling sub-microsecond response times critical for 20-kHz motor control loops.