EPROM 27C512 64Kx8 Memory Chip
The 27C512 EPROM provides 64K x 8-bit non-volatile storage erasable only by ultraviolet light, featuring a transparent quartz lid for erasure. It falls under HTS 8542.32.0061 specifically for UV-erasable EPROMs used in microcontroller applications and firmware storage. Popular in 1980s-1990s computing hardware.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If flash memory (electrically erasable)
Flash EPROMs use electrical erasure, classifying under different EPROM subheading 8542.32.0084
If part of complete computer assembly
EPROMs pre-installed in motherboards or systems classify as computer parts under 8473 rather than separate ICs
If in wafer/die form, not packaged
Unpackaged semiconductor dice fall under electrical parts of 8548, while packaged ICs are 8542
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Import Tips & Compliance
• Include manufacturer datasheets showing UV erasure specs; batch-test for window integrity to prevent classification disputes; watch for counterfeit chips common in legacy EPROM market
Related Products under HTS 8542.32.00.61
UV Erasable EPROM 27C256
The 27C256 is a 32K x 8-bit UV-erasable programmable read-only memory (EPROM) chip that requires ultraviolet light exposure through a quartz window for erasure. It classifies under HTS 8542.32.0061 as an erasable (except electrically) programmable read-only memory, distinct from EEPROMs. Commonly used in legacy embedded systems, BIOS firmware, and hobbyist electronics projects.
Atmel AT27C010A EPROM Chip
Atmel's AT27C010A is a 128K x 8-bit high-performance UV EPROM with rapid access time, featuring ceramic or plastic DIP package with quartz erasure window. Classified under HTS 8542.32.0061 for its non-electrical erasable PROM characteristics. Used in industrial controllers and telecom equipment.
ST Microelectronics M27C4001 EPROM
The M27C4001 from STMicroelectronics offers 4Mbit (512K x 8) UV-erasable EPROM in 32-pin PLCC package with transparent quartz window. Meets HTS 8542.32.0061 criteria for erasable programmable read-only memories requiring non-electrical erasure. Applied in automotive ECUs and medical devices.
Intel 27C020 EPROM 256K Memory
Classic Intel 27C020 EPROM delivers 256K x 8-bit capacity with 150ns access time, featuring the characteristic UV-transparent window for erasure. Precisely matches HTS 8542.32.0061 definition for non-electrically erasable PROM ICs. Essential for retro computing restoration and embedded legacy systems.
Winbond W27C512 EPROM IC
Winbond W27C512 provides reliable 64K x 8 UV EPROM in both DIP and PLCC packages, optimized for low-power operation. Classifies under HTS 8542.32.0061 due to UV light erasure requirement distinguishing it from electrical PROMs. Used in consumer electronics and instrumentation.
Microchip 27C64A EPROM Chip
Microchip 27C64A offers 8K x 8-bit EPROM with commercial/extended temperature range, featuring robust UV erasure window. Falls under HTS 8542.32.0061 for erasable PROM ICs requiring ultraviolet exposure. Ideal for microcontroller development and prototype boards.