Functional Description
The CY7C1471V33 is 3.3 V, 2 M × 36 synchronous flow through burst
SRAMs designed specifically to support unlimited true back-to-back
read or write operations without the insertion of wait states. The
CY7C1471V33 is equipped with the advanced No Bus Latency (NoBL)
logic required to enable consecutive read or write operations with
data being transferred on every clock cycle. This feature
dramatically improves the throughput of data through the SRAM,
especially in systems that require frequent write-read transitions.
Features
■ No Bus Latency™ (NoBL™) architecture eliminates dead cycles
between write and read cycles
■ Supports up to 133 MHz bus operations with zero wait states
■ Data is transferred on every clock
■ Pin compatible and functionally equivalent to ZBT™ devices
■ Internally self timed output buffer control to eliminate the need
to use OE
■ Registered inputs for flow through operation
■ Byte Write capability
■ 3.3 V/2.5 V I/O supply (VDDQ)
■ Fast clock-to-output times
❐ 6.5 ns (for 133-MHz device)
■ Clock enable (CEN) pin to enable clock and suspend operation
■ Synchronous self timed writes
■ Asynchronous output enable (OE)
■ CY7C1471V33 available in JEDEC-standard Pb-free 100-pin TQFP
■ Three chip enables (CE1, CE2, CE3) for simple depth expansion
■ Automatic power down feature available using ZZ mode or CE
deselect
■ Burst capability – linear or interleaved burst order
■ Low standby power
