AT49F002N-12TC

Memory IC Overview

The AT49F002N-12TC is a 5-volt only in-system reprogrammable Flash memory with a capacity of 2 megabits (256K x 8). It features a fast read access time of 120 ns and operates within the commercial temperature range of 0°C to 70°C. The device utilizes a parallel interface and is housed in a 32-lead Plastic Thin Small Outline Package (TSOP) measuring 8 x 20 mm.

Memory IC Feature Summary

• Sector architecture includes one 16K byte boot block with programming lockout, two 8K byte parameter blocks, and two main memory blocks.
• Hardware data protection prevents inadvertent programming through VCC sense, program inhibit, and noise filtering.
• Internal program control and timer manage erase and program cycles without requiring external clocks.

Memory IC Applications

• In-system reprogrammable code storage
• Secure boot code retention
• Parameter data storage

Memory IC Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and operating temperature range. Ensure the component meets the required voltage specifications for your system design before procurement.

Memory IC Selection Notes

Select this component for applications requiring 5-volt operation and sector-based data management. Consider the 120 ns access speed and TSOP packaging constraints when designing the circuit layout and timing requirements.

Memory IC Part Context

This part belongs to the AT49F002 series of 5-volt Flash memories manufactured by Atmel, now Microchip Technology. The series offers various access speeds and package options to suit different performance and physical space requirements in embedded systems.

Memory IC Replacement Considerations

Compatible substitutes include AT49F002T-12TC and AT49LV002NT-12TC, provided voltage levels and pin configurations are verified.

Memory IC FAQ

How is the end of a program cycle detected?

The device supports DATA polling, where reading the last programmed byte yields its complement until the cycle completes, and a toggle bit feature on I/O6.

What is the function of the RESET pin?

A low level on the RESET pin halts operations and puts outputs in a high impedance state. Applying 12V to this pin can override boot block programming lockout.