CY7C1474V33 Datasheet Text
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CY7C1470V33 CY7C1472V33 CY7C1474V33
72-Mbit (2M x 36/4M x 18/1M x 72) Pipelined SRAM with NoBL™ Architecture
Features
- Pin-patible 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
- Single 3.3V power supply
- 3.3V/2.5V I/O power supply
- Fast clock-to-output time
- 3.0 ns (for 250-MHz device)
- Clock Enable (CEN) pin to suspend operation
- Synchronous self-timed writes
- CY7C1470V33, CY7C1472V33 available in JEDEC-standard lead-free 100-pin TQFP, lead-free and non-lead-free 165-ball FBGA package. CY7C1474V33 available in lead-free and non-lead-free 209 ball FBGA package
- IEEE 1149.1 JTAG Boundary Scan patible
- Burst capability- linear or interleaved burst order
- “ZZ” Sleep Mode option and Stop Clock option
Functional Description
The CY7C1470V33, CY7C1472V33, and CY7C1474V33 are 3.3V, 2M x 36/4M x 18/1M x 72 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 CY7C1470V33, CY7C1472V33, and CY7C1474V33 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 CY7C1470V33, CY7C1472V33, and CY7C1474V33 are pin patible and functionally equivalent to ZBT devices. All synchronous inputs pass through input registers controlled by the...