CY7C1383D-133AXIT

Memory IC Overview

The CY7C1383D-133AXIT is a 18-Mbit (1M x 18) synchronous flow-through static random-access memory manufactured by Infineon Technologies. It supports bus operations at a maximum clock frequency of 133 MHz with a fast clock-to-output access time of 6.5 ns. The device operates from a 3.3V core power supply and accepts 2.5V or 3.3V IO supplies. It features an asynchronous output enable, user-selectable burst counter for linear or interleaved sequences, and separate processor and controller address strobes. The component is housed in a 100-pin TQFP package.

Memory IC Feature Summary

• Supports high-performance 2-1-1-1 access rates with a 6.5 ns clock-to-output delay at 133 MHz.
• Features a user-selectable on-chip burst counter supporting Intel Pentium interleaved or linear burst sequences.
• Includes IEEE 1149.1 JTAG-compatible boundary scan for test access and diagnostics.
• Provides synchronous self-timed write capability with separate processor and controller address strobes.

Memory IC Applications

• Secondary cache systems for microprocessors requiring linear or interleaved burst sequences
• High-speed data buffering in network infrastructure equipment
• Embedded systems utilizing synchronous pipeline architectures

Memory IC Procurement Notes

Verify the specific suffix AXIT against official documentation to confirm packaging type and RoHS compliance status. Confirm that the 100-pin TQFP package matches the required footprint. Ensure the 133 MHz speed grade aligns with system timing requirements. Check for any discontinuation notices as this series may have limited availability.

Memory IC Selection Notes

Select this component when a 1M x 18 organization is required for synchronous applications. The 133 MHz speed grade provides a 6.5 ns access time suitable for high-frequency buses. Verify compatibility with 3.3V core and 2.5V/3.3V IO voltage levels. Consider the 100-pin TQFP package constraints for PCB layout and thermal management.

Memory IC Part Context

This part belongs to the CY7C1381/CY7C1383 family of 18-Mbit synchronous SRAMs. The 'D' designation indicates the 100-pin TQFP or 165-ball FBGA package option, while 'F' denotes the 119-ball BGA. The '133' specifies the 133 MHz speed bin. These devices are designed to interface directly with high-speed processors with minimal glue logic.

Memory IC Replacement Considerations

CY7C1383KV33-133AXI

Memory IC FAQ

How is the burst sequence order determined?

The burst sequence is selected via the MODE input pin. A LOW level selects a linear burst sequence, while a HIGH level or floating state selects an interleaved burst sequence compatible with Intel Pentium processors.

What is the function of the ZZ pin?

The ZZ pin is an asynchronous sleep input. Asserting it HIGH places the device into a non-time critical sleep mode with data integrity preserved. Two clock cycles are required to enter or exit this mode.