DESCRIPTION
   The ISSI IS61LPS/VPS25636A and IS61LPS/VPS51218A are high-speed, low-power synchronousstatic RAMsdesigned to provide burstable,high-performancememory for communication and networking applications. The IS61LPS/VPS25636A is organized as 262,144 words by 36 bits and the IS61LPS/VPS51218A is organized as 524,288 words by 18 bits.

FEATURES
• Internal self-timed write cycle
• Individual Byte Write Control and Global Write
• Clock controlled, registered address, data and
   control
• Burst sequence control using MODE input
• Three chip enable option for simple depth
   expansion and address pipelining
• Common data inputs and data outputs
• Auto Power-down during deselect
• Single cycle deselect
• Snooze MODE for reduced-power standby
• JTAG Boundary Scan for PBGA package
• Power Supply
   LPS: VDD 3.3V + 5%, VDDQ 3.3V/2.5V + 5%
   VPS: VDD 2.5V + 5%, VDDQ 2.5V + 5%
• JEDEC 100-Pin TQFP, 119-ball PBGA, and
   165-ball PBGA packages
• Lead-free available