Texas Instruments TMS320F28234PTPS

Overview

TMS320F28234PTPS from Texas Instruments is a 150-MHz C2000™ real-time microcontroller with 128K × 16 flash, 34K × 16 SARAM, 12-bit 16-channel ADC (80-ns conversion), dual eCAN modules, and 176-pin HLQFP (PTP) package rated for –40°C to 125°C operation. It serves as the core control processor in high-reliability motor drives and digital power converters requiring deterministic interrupt response and on-chip analog integration.

For engineers reviewing the TMS320F28234PTPS datasheet, TMS320F28234PTPS pinout, TMS320F28234PTPS application, or TMS320F28234PTPS equivalent, key selection criteria include its 150-MHz CPU cycle time (6.67 ns), absence of FPU (distinguishing it from F2833x), 176-pin thermally enhanced LQFP package, and automotive-grade S-temperature qualification - all critical for thermal-aware industrial motor control designs.

Technical Context

The TMS320F28234PTPS implements the TMS320C28x 32-bit CPU core with Harvard bus architecture, unified memory model, and hardware-accelerated 16×16/32×32 MAC operations. Its peripheral set centers on real-time actuation: six ePWM modules (18 outputs), six HRPWM channels (150-ps MEP resolution), two eQEP interfaces, and six eCAP inputs - all synchronized via a shared PIE interrupt controller supporting 58 peripheral sources.

It integrates a 12-bit ADC with dual sample-and-hold, 2×8-channel multiplexer, and internal/external reference options, enabling simultaneous sampling across multiple current/voltage sensing paths. Clock management includes on-chip oscillator, PLL, watchdog timer, and three independent 32-bit CPU timers - configured for precise timing-critical loop execution without external timing components.

Key Specifications

Pinout & Package

Package: 176-pin Thermally Enhanced Low-Profile Quad Flatpack (HLQFP), body size 24.0 mm × 24.0 mm, lead-free/green compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar real-time control applications.

Compared with TMS320F28234PTPS, the F28235PTPS offers double flash capacity for future-proofing, while the F28334PTPS adds FPU for computationally intensive control laws - neither is pin-compatible with the F28234PTPS due to different silicon revisions and boot ROM mapping, requiring PCB redesign for migration.

Availability

TMS320F28234PTPS is available at Aetrix Electronics and suitable for industrial motor drives, renewable energy inverters, and automotive on-board chargers requiring stable component supply across extended product lifecycles.

Supply support for TMS320F28234PTPS 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 connectivity technologies with over 50 years of innovation in industrial and automotive control solutions.

The TMS320F28234PTPS belongs to TI's C2000™ real-time microcontroller product line, engineered specifically for closed-loop control in power electronics - emphasizing deterministic timing, integrated analog peripherals, and high-voltage system interoperability.

FAQ

What is the maximum operating frequency of the TMS320F28234PTPS?

The TMS320F28234PTPS operates at up to 150 MHz with a 6.67-ns instruction cycle time when powered at 1.9 V. This frequency is achieved using the on-chip PLL driven by an external crystal or oscillator connected to X1/X2 pins. The device also supports 100-MHz operation at 1.8-V core voltage for lower-power modes, but TMS320F28234PTPS is specified and tested for full 150-MHz performance across its –40°C to 125°C temperature range.

Does the TMS320F28234PTPS include a floating-point unit (FPU)?

No, the TMS320F28234PTPS does not include a floating-point unit. It is part of the F2823x family, which uses the fixed-point TMS320C28x CPU core. In contrast, the F2833x family (e.g., TMS320F28334PTPS) integrates an IEEE 754 single-precision FPU. For applications requiring native floating-point math, engineers must implement software libraries or select an F2833x variant - the TMS320F28234PTPS relies on Q-format arithmetic and hardware MAC acceleration for efficient fixed-point computation.

What package type and thermal characteristics does the TMS320F28234PTPS use?

The TMS320F28234PTPS uses a 176-pin Thermally Enhanced Low-Profile Quad Flatpack (HLQFP) with designation PTP and suffix S indicating –40°C to 125°C operation. Its package features an exposed thermal pad on the bottom for soldering to a PCB copper pour, achieving lower junction-to-board thermal resistance than standard LQFP. This design supports sustained 150-MHz operation in high-ambient environments such as motor drive enclosures and automotive power modules.

How many PWM and HRPWM channels does the TMS320F28234PTPS support?

The TMS320F28234PTPS supports six ePWM modules generating 18 total PWM outputs (EPWMxA/B/C per module), plus six HRPWM channels (ePWM1A–6A) with 150-ps minimum pulse-width resolution enabled via MEP (Minimum Edge Pulse) technology. These resources allow independent control of high-side/low-side switches in multi-phase topologies, with trip-zone protection and dead-band generation handled in hardware - eliminating software overhead in fault-critical power stage control.

Is the TMS320F28234PTPS pin-compatible with other F2823x or F2833x devices?

No, the TMS320F28234PTPS is not pin-compatible with F2833x devices due to differences in silicon revision, boot ROM configuration, and peripheral register mapping - even though both share the 176-pin PTP package footprint. Within the F2823x family, TMS320F28234PTPS is pin-compatible with TMS320F28235PTPS and TMS320F28232PTPS, but functional differences (e.g., flash size, HRPWM channel count) require firmware adaptation. Always verify pin function alignment using the official TI signal description table for ZAY/ZHH/ZJZ/PGF/PTP packages.