AT27C010-90PI

Memory IC Overview

The AT27C010-90PI is a 1,048,576-bit (128K x 8) one-time programmable read-only memory (OTP EPROM) manufactured by Microchip Technology. It operates on a single 5V ± 10% power supply and features a maximum access time of 90 ns. The device is housed in a 32-lead Plastic Dual Inline Package (PDIP). It supports industrial temperature ranges from -40°C to +85°C with an active current of 35 mA and standby current under 100 µA.

Memory IC Feature Summary

• Fast read access capability eliminates the need for speed-reducing wait states in high-performance microprocessor systems.
• Low-power CMOS operation ensures minimal energy consumption during standby and active modes.
• Integrated product identification code allows standard programming equipment to select proper algorithms automatically.

Memory IC Applications

• Firmware storage in embedded systems requiring reliable non-volatile data retention.
• High-performance microprocessor systems where direct byte access without wait states is required.
• Industrial control applications operating within extended temperature environments.

Memory IC Procurement Notes

Verify that the ordering suffix 'PI' corresponds specifically to the Industrial temperature range (-40°C to +85°C) and the 32-lead PDIP package configuration. Confirm the device is the standard AT27C010 variant rather than the low-power AT27C010L, as active current specifications differ between these versions. Ensure compatibility with existing 5V logic levels and programming voltage requirements before procurement.

Memory IC Selection Notes

Select this component when a 1-Megabit OTP EPROM with 90 ns access speed is required for industrial environments. The PDIP package is suitable for through-hole mounting or prototyping breadboards. Choose this part over the L-version if higher active drive current is acceptable for faster system performance. Verify that the application does not require reprogrammability, as this is a one-time programmable device.

Memory IC Part Context

This component belongs to the AT27C010(L) family of 1-Megabit OTP EPROMs. The series offers various speed grades and package options including PLCC and TSOP. The AT27C010-90PI represents the specific industrial-grade version in the dual inline package format, providing a balance of speed and power consumption for general-purpose memory storage tasks.

Memory IC Replacement Considerations

AT27C010-90PC

Memory IC FAQ

What is the difference between AT27C010 and AT27C010L?

The AT27C010L is the low-power version with a typical active current of 25 mA at 5 MHz, whereas the standard AT27C010 consumes 35 mA under the same conditions. Both share identical pinouts and functionality.

How is the Integrated Product Identification Code accessed?

The code is accessed by holding all address inputs low except A9 (set to V_H) and toggling A0. This selects either the Manufacturer’s Identification byte or the Device Code byte.