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CY7C1354C-166BGI PDF预览

CY7C1354C-166BGI

更新时间： 2024-09-17 03:03:07
品牌 Logo 应用领域
赛普拉斯 - CYPRESS 静态存储器
页数 文件大小 规格书
28页 511K
描述
9-Mbit (256K x 36/512K x 18) Pipelined SRAM with NoBL⑩ Architecture

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CY7C1354C-166BGI 数据手册

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CY7C1354C  
CY7C1356C  
9-Mbit (256K x 36/512K x 18)  
Pipelined SRAM with NoBL™ Architecture  
Functional Description[1]  
Features  
• Pin-compatible and functionally equivalent to ZBT™  
• Supports 250-MHz bus operations with zero wait states  
— Available speed grades are 250, 200, and 166 MHz  
The CY7C1354C and CY7C1356C are 3.3V, 256K x 36 and  
512K x 18 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 CY7C1354C and CY7C1356C are  
equipped with the advanced (NoBL) logic required to enable  
consecutive Read/Write operations with data being trans-  
ferred on every clock cycle. This feature dramatically improves  
the throughput of data in systems that require frequent  
Write/Read transitions. The CY7C1354C and CY7C1356C are  
pin compatible and functionally equivalent to ZBT devices.  
• 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 (VDD  
)
All synchronous inputs pass through input registers controlled  
by the rising edge of the clock. All data outputs pass through  
output 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.  
• 3.3V or 2.5V I/O power supply (VDDQ  
)
• Fast clock-to-output times  
— 2.8 ns (for 250-MHz device)  
• Clock Enable (CEN) pin to suspend operation  
• Synchronous self-timed writes  
Write operations are controlled by the Byte Write Selects  
(BWa–BWd for CY7C1354C and BWa–BWb for CY7C1356C)  
and a Write Enable (WE) input. All writes are conducted with  
on-chip synchronous self-timed write circuitry.  
• Available in lead-free 100-Pin TQFP package, lead-free  
and non lead-free 119-Ball BGA package and 165-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  
Three synchronous Chip Enables (CE1, CE2, CE3) 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.  
Logic Block Diagram–CY7C1354C (256K x 36)  
ADDRESS  
REGISTER 0  
A0, A1, A  
A1  
A0  
A1'  
A0'  
D1  
D0  
Q1  
Q0  
BURST  
LOGIC  
MODE  
C
ADV/LD  
C
CLK  
CEN  
WRITE ADDRESS  
REGISTER 1  
WRITE ADDRESS  
REGISTER 2  
O
O
S
U
D
A
T
U
T
P
T
P
E
N
S
U
T
U
T
ADV/LD  
A
E
WRITE REGISTRY  
AND DATA COHERENCY  
CONTROL LOGIC  
R
E
G
I
MEMORY  
ARRAY  
B
U
F
S
T
E
E
R
I
DQs  
DQP  
DQP  
DQP  
DQP  
WRITE  
DRIVERS  
BW  
BW  
a
a
b
c
d
A
M
P
b
BW  
BW  
c
S
T
E
R
S
F
d
E
R
S
S
WE  
E
E
N
G
INPUT  
REGISTER 1  
INPUT  
REGISTER 0  
E
E
OE  
READ LOGIC  
CE1  
CE2  
CE3  
SLEEP  
CONTROL  
ZZ  
Note:  
1. For best-practices recommendations, please refer to the Cypress application note System Design Guidelines on www.cypress.com.  
Cypress Semiconductor Corporation  
Document #: 38-05538 Rev. *G  
•
198 Champion Court  
•
San Jose, CA 95134-1709  
•
408-943-2600  
Revised September 14, 2006  
[+] Feedback  
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