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CY7C1461AV25 Datasheet

  • CY7C1461AV25

  • 36-Mbit (1M x 36/2M x 18/512K x 72) Flow-Through SRAM with N...

  • 388.00KB

  • 0页

  • CYPRESS

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CY7C1461AV25
CY7C1463AV25
CY7C1465AV25
36-Mbit (1M x 36/2M x 18/512K x 72)
Flow-Through SRAM with NoBL鈩?Architecture
Features
鈥?No Bus Latency鈩?(NoBL鈩? architecture eliminates
dead cycles between write and read cycles
鈥?Can support up to 133-MHz bus operations with zero
wait states
鈥?Data is transferred on every clock
鈥?Pin-compatible and functionally equivalent to ZBT鈩?/div>
devices
鈥?Internally self-timed output buffer control to eliminate
the need to use OE
鈥?Registered inputs for flow-through operation
鈥?Byte Write capability
鈥?2.5V/1.8V I/O power supply
鈥?Fast clock-to-output times
鈥?6.5 ns (for 133-MHz device)
鈥?Clock Enable (CEN) pin to enable clock and suspend
operation
鈥?Synchronous self-timed writes
鈥?Asynchronous Output Enable
鈥?CY7C1461AV25, CY7C1463AV25 available in
JEDEC-standard lead-free 100-pin TQFP package,
lead-free and non-lead-free 165-ball FBGA package.
CY7C1465AV25 available in lead-free and non-lead-free
209-ball FBGA package.
鈥?Three chip enables for simple depth expansion
鈥?Automatic Power-down feature available using ZZ
mode or CE deselect
鈥?IEEE 1149.1 JTAG-Compatible Boundary Scan
鈥?Burst Capability鈥攍inear or interleaved burst order
鈥?Low standby power
Functional Description
[1]
The CY7C1461AV25/CY7C1463AV25/CY7C1465AV25 are
2.5V, 1M
脳
36/2M
脳
18/512K
脳
72 Synchronous Flow-through
Burst SRAMs designed specifically to support unlimited true
back-to-back Read/Write operations without the insertion of
wait
states.
The
CY7C1461AV25/CY7C1463AV25/
CY7C1465AV25 is equipped with the advanced No Bus
Latency (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 through the SRAM, especially in systems that require
frequent Write-Read transitions.
All synchronous inputs pass through input registers controlled
by the rising edge of the clock. The clock input is qualified by
the Clock Enable (CEN) signal, which when deasserted
suspends operation and extends the previous clock cycle.
Maximum access delay from the clock rise is 6.5 ns (133-MHz
device).
Write operations are controlled by the two or four Byte Write
Select (BW
X
) and a Write Enable (WE) input. All writes are
conducted with on-chip synchronous self-timed write circuitry.
Three synchronous Chip Enables (CE
1
, CE
2
, CE
3
) and an
asynchronous Output Enable (OE) provide for easy bank
selection and output tri-state control. In order to avoid bus
contention, the output drivers are synchronously tri-stated
during the data portion of a write sequence.
Selection Guide
133 MHz
Maximum Access Time
Maximum Operating Current
Maximum CMOS Standby Current
6.5
270
120
100 MHz
8.5
250
120
Unit
ns
mA
mA
Note:
1. For best-practices recommendations, please refer to the Cypress application note
System Design Guidelines
on www.cypress.com.
Cypress Semiconductor Corporation
Document #: 38-05355 Rev. *E
鈥?/div>
198 Champion Court
鈥?/div>
San Jose
,
CA 95134-1709
鈥?/div>
408-943-2600
Revised June 22, 2006

CY7C1461AV25 PDF文件相关型号

CY7C1461AV25-133BZC,CY7C1461AV25-133BZXC,CY7C1461AV33-100AXC,CY7C1463AV25,CY7C1463AV25-133BZC,CY7C1463AV25-133BZI,CY7C1463AV25-133BZXC,CY7C1463AV25-133BZXI,CY7C1463AV33-100AXC,CY7C1465AV25,CY7C1465AV33

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