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CY7C1372C-225BGI PDF预览

CY7C1372C-225BGI

更新时间: 2024-11-07 21:56:31
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
27页 678K
描述
512K x 36/1M x 18 Pipelined SRAM with NoBL Architecture

CY7C1372C-225BGI 数据手册

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CY7C1370C  
CY7C1372C  
512K x 36/1M x 18 Pipelined SRAM  
with NoBL™ Architecture  
Features  
Functional Description  
The CY7C1370C and CY7C1372C are 3.3V, 512K x 36 and  
• Pin-compatible and functionally equivalent to ZBT™  
• Supports 250-MHz bus operations with zero wait states  
1M 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 CY7C1370C and CY7C1372C 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 CY7C1370C and CY7C1372C are  
pin compatible and functionally equivalent to ZBT devices.  
— Available speed grades are 250, 225, 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  
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.  
Write operations are controlled by the Byte Write Selects  
(BWa–BWd for CY7C1370C and BWa–BWb for CY7C1372C)  
and a Write Enable (WE) input. All writes are conducted with  
on-chip synchronous self-timed write circuitry.  
Three synchronous Chip Enables (CE1, CE2, CE3) and an  
asynchronous Output Enable (OE) provide for easy bank  
selection and output three-state control. In order to avoid bus  
contention, the output drivers are synchronously three-stated  
during the data portion of a write sequence.  
• 3.3V/2.5V I/O power supply  
• Fast clock-to-output times  
— 2.6 ns (for 250-MHz device)  
— 2.8 ns (for 225-MHz device)  
— 3.0 ns (for 200-MHz device)  
— 3.4 ns (for 167-MHz device)  
• Clock Enable (CEN) pin to suspend operation  
• Synchronous self-timed writes  
• Available in 100 TQFP, 119 BGA, and 165 fBGA  
packages  
• IEEE 1149.1 JTAG Boundary Scan  
• Burst capability—linear or interleaved burst order  
• “ZZ” Sleep Mode option and Stop Clock option  
Logic Block Diagram-CY7C1370C (512K 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  
Cypress Semiconductor Corporation  
3901 North First Street  
San Jose, CA 95134  
408-943-2600  
Document #: 38-05233 Rev. *D  
Revised June 03, 2004  

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