23A512T-I/SN

Memory IC Overview

The Microchip Technology 23A512T-I/SN is a 512-Kbit Serial SRAM device featuring SPI, SDI, and SQI interfaces. It operates within a supply voltage range of 1.7V to 2.2V and supports an industrial temperature range of -40°C to +85°C. The memory organization is 64K x 8 bits with a 32-byte page structure. Maximum clock frequency reaches 20 MHz. Read current is typically 3 mA at 5.5V and 20 MHz, while standby current is 4 µA at +85°C. It utilizes an 8-lead SOIC package.

Memory IC Feature Summary

• Supports high-speed data transfer via Serial Dual Interface (SDI) and Serial Quad Interface (SQI) modes alongside standard SPI.
• Provides unlimited read and write cycles with zero write time for immediate data availability.
• Includes a Hold function to suspend serial communication sequences without resetting the internal address pointer.
• Operates in Byte, Page, and Sequential modes to accommodate various data access requirements.

Memory IC Applications

• Data logging systems requiring frequent updates
• Configuration storage in embedded microcontroller designs
• Buffering applications in high-speed serial communication links

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required voltage range and temperature grade. Confirm the package type corresponds to the design footprint. Ensure the component meets RoHS compliance standards if applicable to the manufacturing process. Cross-reference the datasheet revision to confirm pinout and electrical characteristics align with the system design specifications.

Memory IC Selection Notes

Select this component when low-voltage operation between 1.7V and 2.2V is required. Choose this part over the 23LC512 variant specifically for compatibility with lower voltage logic levels. Consider the SQI mode capability if maximizing throughput on limited pin counts is necessary. Verify that the 8-lead SOIC package dimensions fit the available PCB space constraints.

Memory IC Part Context

This device belongs to the 23A512/23LC512 family of 512-Kbit Serial SRAMs. The 'A' designation indicates a lower voltage operating range compared to the 'LC' series. Both variants share identical interface protocols and functional behaviors, differing primarily in power supply requirements and thermal performance limits.

Memory IC Replacement Considerations

The 23LC512T-I/SN serves as a direct functional substitute but requires a higher supply voltage (2.5V–5.5V). Ensure the host system can provide the necessary voltage level before swapping components.

Memory IC FAQ

Does the HOLD function work in SQI mode?

No, the HOLD functionality is not available when operating in Serial Quad Interface (SQI) mode due to shared pin assignments.

What happens to the address counter in Sequential mode?

In Sequential mode, the internal address counter automatically increments across page boundaries and rolls over to 0x0000 upon reaching the end of the array.