Texas Instruments
Single-core C66x fixed/floating-point DSP, 1.25 GHz, extended temperature — 625-ball FCBGA
The TMS320C6655CZHA25 is a single-core KeyStone DSP from Texas Instruments based on the C66x core, delivering 40 GMACS fixed-point and 20 GFLOPS floating-point performance at 1.25 GHz. It integrates 1 MB of local L2 memory plus 1 MB of shared MSM SRAM, a 32-bit DDR3 interface, SRIO 2.1, PCIe Gen2, HyperLink and SGMII Gigabit Ethernet, and is used in radar, industrial imaging, test and measurement, and communications equipment. The A grade is the extended-temperature version (–40 °C to 100 °C).
Key Specifications
Verify against the original datasheet before quoting.
| Core | 1 × TI C66x DSP (fixed and floating point) |
|---|---|
| Clock speed | 1.25 GHz (40 GMACS / 20 GFLOPS) |
| On-chip memory | 32 KB L1P + 32 KB L1D, 1 MB L2, 1 MB shared MSM SRAM |
| External memory | 32-bit DDR3-1333, 16-bit EMIF |
| High-speed I/O | SRIO 2.1 (4 lanes), PCIe Gen2 (2 lanes), HyperLink, SGMII GbE |
| Package / temperature | 625-ball FCBGA (CZH), 21 × 21 mm; –40 °C to 100 °C |
Market Status — as of October 2026
Long Factory Lead Time Factory lead time is currently around 26 weeks.
Quality & Traceability
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FAQ
What is the difference between TMS320C6655CZH25 and TMS320C6655CZHA25?
Both run at 1.25 GHz in the same 625-ball package. The A version is the extended-temperature grade (–40 °C to 100 °C); the standard version is commercial temperature (0 °C to 85 °C). They are not interchangeable where the extended range is required.
Is there a dual-core option in the same package?
Yes. The TMS320C6657 is the dual-core member of the same family in the same package. Software and board changes may still be needed, so check the TI documentation before treating it as an alternate.
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