AT93C56W-10SC-2.5

Memory IC Overview

The AT93C56W-10SC-2.5 is a 2K-bit (256 x 8 or 128 x 16) serial electrically erasable programmable read-only memory (EEPROM). It features a 3-wire Microwire interface with a maximum clock frequency of 500 kHz at the specified voltage range. The device operates on a supply voltage of 2.5V to 5.5V and is housed in an 8-lead EIAJ SOIC package. It supports self-timed write cycles with a maximum duration of 10 ms, ensuring data retention for up to 100 years.

Memory IC Feature Summary

• Supports user-selectable internal organization via the ORG pin for either 8-bit or 16-bit word widths.
• Includes hardware protection against accidental writes through Erase/Write Enable and Disable instructions.
• Provides high reliability with over 4000V ESD protection and one million write cycle endurance.

Memory IC Applications

• Industrial and commercial applications requiring low power operation
• Systems needing non-volatile storage for configuration parameters
• Embedded devices utilizing simple serial communication interfaces

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required voltage range and package type. Confirm the manufacturer origin, as this part was originally produced by Atmel Corporation before acquisition by Microchip Technology. Ensure the component meets the necessary environmental specifications for the intended operating temperature range.

Memory IC Selection Notes

Select this component when a 2K-bit capacity is required with a 3-wire serial interface. Choose this variant specifically for its 2.5V to 5.5V operating voltage range and EIAJ SOIC packaging. Consider alternative members of the AT93C56 family if different voltage levels or package styles are needed.

Memory IC Part Context

This device belongs to the AT93C46/56/57/66 series of 3-wire serial EEPROMs. The '56' designation indicates a 2K-bit density. The 'W' suffix denotes the EIAJ SOIC package, while '-2.5' specifies the low-voltage operational range. This series is optimized for applications where low power consumption and compact packaging are essential.

Memory IC Replacement Considerations

Direct substitutes within the same family include AT93C56-10SC-2.5 for standard JEDEC SOIC packages. Other compatible options may include AT93C56 variants with different voltage suffixes or package codes, provided the interface and memory size remain consistent.

Memory IC FAQ

How is the internal memory organization selected?

The organization is determined by the ORG pin. Connecting ORG to VCC selects the 128 x 16 configuration, while tying it to ground selects the 256 x 8 configuration.

What is the purpose of the EWEN instruction?

The Erase/Write Enable (EWEN) instruction must be executed before any programming operations. It transitions the device from the default Erase/Write Disable state to allow write and erase commands.