27C512-15/LP

Overview

The Microchip Technology 27C512-15/LP is a 512K-bit (64K x 8) CMOS EPROM. It features a single +5V power supply for both read and erase operations, eliminating the need for multiple voltage sources. The device offers access times of 150ns and includes an output enable pin for low-power standby control. It utilizes a standard 28-pin DIP or PLCC package with a JEDEC-standard pinout compatible with earlier NMOS equivalents.

Feature Summary

• Single +5V operation for programming, erasing, and reading
• High-speed 150ns access time for efficient system performance
• Low-power CMOS technology with active and standby modes
• JEDEC-standard pinout ensuring compatibility with legacy designs

Applications

• Embedded systems requiring non-volatile code storage
• Industrial control applications needing reliable program memory
• Consumer electronics utilizing EPROM-based firmware
• Automotive electronic modules with strict environmental requirements

Procurement Notes

Verify the specific suffix 'LP' indicates the lead-free package variant as per Microchip's current labeling standards. Confirm the package type matches your PCB footprint requirements, typically 28-pin DIP or PLCC. Ensure the datasheet version aligns with the manufacturing date code to verify any minor electrical parameter updates or packaging changes.

Selection Notes

Select this component when a 64K x 8 capacity is required with 150ns speed. Consider the LP suffix for lead-free compliance in RoHS-regulated markets. Compare against UV-erasable alternatives if reprogrammability is needed versus OTP options. Verify voltage tolerance matches the system's +5V rail stability.

Part Context

This part belongs to the 27C series of high-performance CMOS EPROMs. It serves as a drop-in replacement for older NMOS 27512 devices. The series is designed for cost-effective mass production while maintaining high reliability. It supports standard microcontroller architectures requiring external program memory.

Replacement Considerations

Direct replacements include other 27C512 variants from Microchip or compatible manufacturers offering identical pinouts and electrical characteristics. Verify that substitute parts support the same +5V supply and 150ns access time. Ensure the replacement also meets the required lead-free specifications if applicable.