Texas Instruments TMS320F2811PBKQ

Overview

TMS320F2811PBKQ from Texas Instruments is a 150-MHz C28x-based digital signal processor optimized for real-time motor control and power electronics applications. It integrates 128K × 16 flash, 18K × 16 SARAM, dual 12-bit ADCs (16 channels, 12.5 MSPS), two Event Managers (EVA/EVB), eCAN, SPI, dual SCIs, McBSP, and 56 GPIO pins in a 128-pin LQFP package rated for –40°C to 125°C.

For engineers reviewing the TMS320F2811PBKQ datasheet, TMS320F2811PBKQ pinout, TMS320F2811PBKQ application, or TMS320F2811PBKQ equivalent, this page delivers verified technical context, pin-level circuit roles, automotive-grade thermal and security features, and validated alternative options for industrial motor drive and EV powertrain designs.

Technical Context

The TMS320F2811PBKQ implements a Harvard-architecture 32-bit C28x CPU with atomic instructions, 4M linear address space, and little-endian data organization. Its clock system combines an on-chip oscillator and PLL to generate 150-MHz SYSCLK from 1–20 MHz XIN, supporting low-power modes (IDLE/STANDBY/HALT) and individual peripheral clock gating.

Peripheral integration centers on deterministic real-time control: two Event Managers provide 16 PWM outputs, 6 capture/QEP inputs, and trip-zone protection; the 12-bit ADC supports simultaneous sampling across two 8-channel multiplexers with 80-ns conversion time; and eCAN enables robust communication in noisy automotive environments per ISO 11898-1.

Key Specifications

Pinout & Package

128-pin Low-Profile Quad Flatpack (LQFP), PBK package, 14.0 mm × 14.0 mm body size, 0.4 mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F2812PGF, TMS320F2811PBKQ removes XINTF to reduce pin count and cost while retaining identical CPU, ADC, PWM, and CAN capabilities; versus TMS320F28335PGF, it trades floating-point and CLA acceleration for lower power, smaller footprint, and proven AEC-Q100 reliability in production automotive systems.

Availability

TMS320F2811PBKQ is available at Aetrix Electronics and suitable for industrial motor drives, electric vehicle powertrain controllers, and advanced driver assistance systems requiring stable component supply across extended temperature ranges and automotive qualification.

Supply support for TMS320F2811PBKQ 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 high-precision, real-time digital control of power electronics - targeting motor drives, renewable energy inverters, and automotive electrification systems with deterministic timing and integrated analog peripherals.

FAQ

What is the maximum operating frequency of the TMS320F2811PBKQ?

The TMS320F2811PBKQ operates at a maximum CPU frequency of 150 MHz, achieving a 6.67-ns instruction cycle time. This speed is supported by its 1.9-V core supply voltage and is fully characterized across the –40°C to 125°C temperature range specified for the Q-grade automotive variant. The device uses an internal PLL to multiply the input clock (1–20 MHz on X1/XCLKIN) to generate the 150-MHz SYSCLK required for deterministic real-time control execution in TMS320F2811PBKQ applications.

Does the TMS320F2811PBKQ include an external memory interface?

No, the TMS320F2811PBKQ does not include an external memory interface (XINTF). As confirmed in the device comparison table and package-specific documentation, XINTF signals (XA[0–18], XD[0–15], XZCS0AND1, etc.) are not implemented in the 128-pin PBK package variant of the F2811. This distinguishes it from the F2812PGF (176-pin) and F2812GHH/ZHH (179-ball BGA) variants, which do support external memory expansion. All memory for TMS320F2811PBKQ resides on-chip: 128K × 16 flash, 18K × 16 SARAM, and 4K × 16 boot ROM.

What ADC performance specifications apply to the TMS320F2811PBKQ?

The TMS320F2811PBKQ integrates a 12-bit successive-approximation ADC with 16 input channels organized into two 8-channel multiplexers (ADCINA0–7 and ADCINB0–7). It achieves a maximum conversion rate of 12.5 MSPS (80 ns per sample), supports both single and simultaneous sampling modes, and includes two Sample-and-Hold circuits. These specifications are fully validated for the PBK package and Q-grade temperature range, enabling precise current/voltage sensing in high-speed motor control and power conversion applications using TMS320F2811PBKQ.

How is code security implemented on the TMS320F2811PBKQ?

The TMS320F2811PBKQ implements a 128-bit code-security module that protects on-chip flash, OTP ROM, and L0/L1 SARAM memory blocks from unauthorized read access. Once enabled, this feature prevents firmware reverse-engineering and intellectual property theft by locking memory contents after programming. Security activation is irreversible and requires a valid 128-bit password written to specific registers during development. This mechanism is fully operational across the –40°C to 125°C range and is a key enabler for secure deployment of proprietary control algorithms in TMS320F2811PBKQ-based automotive and industrial systems.

What is the significance of the 'Q' suffix in TMS320F2811PBKQ?

The 'Q' suffix in TMS320F2811PBKQ denotes AEC-Q100 qualification for automotive applications, specifically Grade 1 (–40°C to 125°C ambient operating temperature). This certification validates the device's reliability under automotive stress conditions including temperature cycling, humidity, vibration, and ESD. Unlike commercial-grade variants (e.g., TMS320F2811PBKA), the TMS320F2811PBKQ undergoes additional screening and testing to meet stringent automotive quality and longevity requirements - making it suitable for powertrain, ADAS, and body electronics where functional safety and long-term stability are critical.