CY7C1399B-20ZC

Product Overview

The CY7C1399B-20ZC from Cypress Semiconductor Corp is a 256 Kbit volatile SRAM device organized as 32 K x 8. It uses an asynchronous parallel memory interface and is supplied in a surface-mount 28-TSOP I package with a 28-TSSOP case width of 0.465 inch (11.80 mm). The device operates from a 3 V to 3.6 V supply and specifies a 20 ns access time and 20 ns write cycle time across an operating temperature range of -40°C to 85°C (TA).

Key Features

• 256 Kbit volatile SRAM memory with a 32 K x 8 organization
• Asynchronous parallel memory interface
• 20 ns access time
• 20 ns write cycle time for word or page operations
• 3 V to 3.6 V supply voltage range
• Operating temperature range of -40°C to 85°C (TA)
• Surface-mount 28-TSOP I package (28-TSSOP, 0.465 inch / 11.80 mm width)

Applications

• Embedded controller data buffering in systems using the 3 V to 3.6 V supply range
• General-purpose volatile memory expansion for asynchronous parallel bus architectures
• Temporary data storage in systems operating from -40°C to 85°C

Design & Procurement Notes

For board design, the CY7C1399B-20ZC requires a 3 V to 3.6 V supply and a parallel bus capable of asynchronous SRAM timing. The 256 Kbit capacity is arranged as 32 K x 8, which suits an 8-bit data path. The 20 ns access and 20 ns write cycle values should be checked against the controller or bus timing. The 28-TSOP I surface-mount package and -40°C to 85°C operating range should be considered when planning PCB layout and thermal margins.