Functional Description
The CY7C1460AV33/CY7C1462AV33/CY7C1464AV33 are 3.3V, 1M x 36/2M x 18/512K x72 Synchronous pipelined burst SRAMs with No Bus Latency™ (NoBL™) logic, respectively. They are designed to support unlimited true back-to-back Read/Write operations with no wait states. The CY7C1460AV33/CY7C1462AV33/CY7C1464AV33 are equipped with the advanced (NoBL) logic required to enable consecutive Read/Write operations with data being transferred on every clock cycle. This feature dramatically improves the throughput of data in systems that require frequent Write/Read transitions. The CY7C1460AV33/CY7C1462AV33/CY7C1464AV33 are pin compatible and functionally equivalent to ZBT devices.
Features
• Pin-compatible and functionally equivalent to ZBT™
• Supports 250-MHz bus operations with zero wait states
— Available speed grades are 250, 200 and 167 MHz
• Internally self-timed output buffer control to eliminate the need to use asynchronous OE
• Fully registered (inputs and outputs) for pipelined operation
• Byte Write capability
• 3.3V power supply
• 3.3V/2.5V I/O power supply
• Fast clock-to-output times
— 2.6 ns (for 250-MHz device)
• Clock Enable (CEN) pin to suspend operation
• Synchronous self-timed writes
• CY7C1460AV33, CY7C1462AV33 available in
JEDEC-standard lead-free 100-pin TQFP, lead-free and
non-lead-free 165-ball FBGA package. CY7C1464AV33
available in lead-free and non-lead-free 209-ball FBGA
package
• IEEE 1149.1 JTAG-Compatible Boundary Scan
• Burst capability—linear or interleaved burst order
• “ZZ” Sleep Mode option and Stop Clock option
