Tms4532 |best| -

It is a 16-pin DIP package. In the ZX Spectrum, eight of these chips are used to provide the additional 32K of RAM needed to upgrade a 16K model to 48K. TMS4532-xxNL3: The "Low" half of the chip is functional. TMS4532-xxNL4: The "High" half of the chip is functional. The "xx" denotes speed, commonly (150ns) or Common Issues & Troubleshooting

However, the TMS4532 is rarely discussed for its speed. It is most famous for its relationship to the —the standard 64K chip of the era.

The TMS4532 uses a multiplexed address bus to save physical pins. The key pins include: tms4532

This comprehensive guide dives deep into every aspect of the TMS4532, from its technical pinout and electrical characteristics to common failure modes and modern equivalents.

Note: Pin numbering may vary slightly. Always verify with the official Texas Instruments datasheet for your specific revision. It is a 16-pin DIP package

Finding a genuine TMS4532 today is a task for the dedicated repair technician. However, several options exist.

The is a historically significant 32Kx1-bit dynamic RAM (DRAM) chip manufactured by Texas Instruments, most famously utilized in the Sinclair ZX Spectrum 48K home computer. Rather than being a natively designed 32K chip, it was a "cost-optimized" product—essentially a TMS4164 (64K DRAM) that had failed quality testing in one half of its memory array but remained functional in the other. Historical Context: The Silicon "Reject" TMS4532-xxNL4: The "High" half of the chip is functional

Since the TMS4532 is long obsolete, enthusiasts often use modern alternatives or equivalents: ZX Spectrum 48k Euro 1400 Power Supply – Baked - hex.ro