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Product Detailed Parameters
- Description：IC EPROM 512KBIT PARALLEL 32PLCC
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Memory Type：Non-Volatile
- Memory Format：EPROM
- Technology：EPROM - OTP
- Memory Size：512Kbit
- Memory Organization：64K x 8
- Memory Interface：Parallel
- Clock Frequency：-
- Write Cycle Time - Word, Page：-
- Voltage - Supply：4.5V ~ 5.5V
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：32-LCC (J-Lead)
- Supplier Device Package：32-PLCC (11.43x13.97)
- Access Time：120 ns
- Grade：-
- Qualification：-
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Overview
The Microchip Technology 27C512-12/L093 is a 512Kbit (64K x 8) CMOS EPROM featuring parallel interface access. It operates within a supply voltage range of 4.5V to 5.5V with a maximum access time of 120 ns. The component is housed in a 32-pin PLCC surface-mount package, designed for non-volatile data storage applications requiring reliable program retention.
Feature Summary
- Provides 512Kbit of non-volatile memory capacity organized as 64K words by 8 bits.
- Utilizes a parallel interface architecture for direct address and data bus connectivity.
- Operates on a standard 5V supply voltage profile suitable for legacy and industrial systems.
Applications
- Industrial control system firmware storage
- Embedded microcontroller program memory
- Legacy hardware emulation and replacement
Procurement Notes
Verify the specific suffix L093 against official Microchip documentation to confirm pinout and package dimensions. Ensure compatibility with existing board layouts for 32-pin PLCC footprints. Confirm that the programming equipment supports the required UV erasure process inherent to EPROM technology before procurement.
Selection Notes
Select this component when a parallel interface and 5V operation are mandatory requirements. Consider the physical size of the 32-pin PLCC package against available PCB space. Evaluate if the UV erasure requirement aligns with the production or maintenance workflow compared to electrically erasable alternatives.
Part Context
This part belongs to the 27C512 family of high-density EPROMs from Microchip Technology. It serves as a drop-in replacement for older Intel-compatible 27C512 devices. The device maintains backward compatibility with standard EPROM addressing protocols while offering improved CMOS power characteristics over earlier NMOS generations.
Replacement Considerations
Direct substitutes include other 27C512 variants with identical pinouts and electrical specifications. Verify that alternative sources maintain the same 120 ns access time and 32-pin PLCC form factor to ensure mechanical fit without redesign.
