Cypress CY7C1470V25 User Manual

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72-Mbit(2M x 36/4M x 18/1M x 72)
Pi
p
elined SRAM with NoBL™ Architecture
CY7C1470V25
CY7C1472V25
CY7C1474V25
Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600
Document #: 38-05290 Rev. *I Revised June 21, 2006
Features
Pin-compatible 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 2.5V power supply
2.5V/1.8V I/O supply (V
DDQ
)
Fast clock-to-output times
3.0 ns (for 250-MHz device)
Clock Enable (CEN
) pin to suspend operation
Synchronous self-timed writes
CY7C1470V25, CY7C1472V25 available in
JEDEC-standard lead-free 100-pin TQFP, lead-free and
non-lead-free 165-ball FBGA package. CY7C1474V25
available in lead-free and non-lead-free 209 ball FBGA
package
IEEE 1149.1 JTAG Boundary Scan compatible
Burst capability—linear or interleaved burst order
“ZZ” Sleep Mode option and Stop Clock option
Functional Description
The CY7C1470V25/CY7C1472V25/CY7C1474V25 are 2.5V,
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
CY7C1470V25/CY7C1472V25/CY7C1474V25 are equipped
with the advanced (NoBL) logic required to enable consec-
utive 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 CY7C1470V25/CY7C1472V25/CY7C1474V25
are pin-compatible and functionally equivalent to ZBT devices.
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 (BW
a
–BW
h
for CY7C1474V25, BW
a
–BW
d
for CY7C1470V25 and BW
a
–BW
b
for CY7C1472V25) 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.
A0, A1, A
C
MODE
BW
a
BW
b
WE
CE1
CE2
CE3
OE
READ LOGIC
DQs
DQP
a
DQP
b
DQP
c
DQP
d
D
A
T
A
S
T
E
E
R
I
N
G
O
U
T
P
U
T
B
U
F
F
E
R
S
MEMORY
ARRAY
E
E
INPUT
REGISTER 0
ADDRESS
REGISTER 0
WRITE ADDRESS
REGISTER 1
WRITE ADDRESS
REGISTER 2
WRITE REGISTRY
AND DATA COHERENCY
CONTROL LOGIC
BURST
LOGIC
A0'
A1'
D1
D0
Q1
Q0
A0
A1
C
ADV/LD
ADV/LD
E
INPUT
REGISTER 1
S
E
N
S
E
A
M
P
S
E
C
LK
C
EN
WRITE
DRIVERS
BW
c
BW
d
ZZ
SLEEP
CONTROL
O
U
T
P
U
T
R
E
G
I
S
T
E
R
S
Logic Block Diagram-CY7C1470V25 (2M x 36)
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Summary of Contents

Page 1 - CY7C1474V25

72-Mbit(2M x 36/4M x 18/1M x 72)Pipelined SRAM with NoBL™ ArchitectureCY7C1470V25CY7C1472V25CY7C1474V25Cypress Semiconductor Corporation • 198 Champi

Page 2

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 10 of 28IEEE 1149.1 Serial Boundary Scan (JTAG)The CY7C1470V25/CY7C1472V25/CY7C147

Page 3

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 11 of 28Instruction RegisterThree-bit instructions can be serially loaded into the

Page 4

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 12 of 28possible to capture all other signals and simply ignore thevalue of the CL

Page 5

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 13 of 282.5V TAP AC Test ConditionsInput pulse levels ...

Page 6

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 14 of 28 Scan Register SizesRegister Name Bit Size (x36) Bit Size (x18) Bit Size

Page 7

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 15 of 28Boundary Scan Exit Order (2M x 36)Bit # 165-Ball ID Bit # 165-Ball ID Bit

Page 8

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 16 of 28Boundary Scan Exit Order (1M x 72) Bit # 209-Ball ID Bit # 209-Ball ID Bit

Page 9

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 17 of 28Maximum Ratings (Above which the useful life may be impaired. For user gui

Page 10 - [+] Feedback

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 18 of 28 Capacitance[14]Parameter Description Test Conditions100 TQFPMax.165 FBGAM

Page 11

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 19 of 28Switching Characteristics Over the Operating Range [15, 16]Parameter Descr

Page 12

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 2 of 28 A0, A1, ACMODEBWaBWbWECE1CE2CE3OEREAD LOGICDQsDQPaDQPbDATASTEERINGOUTPUT

Page 13

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 20 of 28Switching Waveforms Read/Write/Timing[21, 22, 23]Notes: 21. For this wavef

Page 14

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 21 of 28NOP, STALL and DESELECT Cycles[21, 22, 24]ZZ Mode Timing[25, 26]Notes: 24.

Page 15

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 22 of 28Ordering InformationNot all of the speed, package and temperature ranges a

Page 16

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 23 of 28250 CY7C1470V25-250AXC 51-85050 100-Pin Thin Quad Flat Pack (14 x 20 x 1.4

Page 17

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 24 of 28Package Diagrams NOTE:1. JEDEC STD REF MS-0262. BODY LENGTH DIMENSION DOES

Page 18

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 25 of 28Package Diagrams (continued)A1PIN 1 CORNER17.00±0.1015.00±0.107.001.00Ø0.

Page 19

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 26 of 28© Cypress Semiconductor Corporation, 2006. The information contained herei

Page 20

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 27 of 28Document History PageDocument Title: CY7C1470V25/CY7C1472V25/CY7C1474V25 7

Page 21

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 28 of 28*I 472335 See ECN VKN Corrected the typo in the pin configuration for 209-

Page 22

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 3 of 28Pin ConfigurationsAAAAA1A0VSSVDDAAAAAAVDDQVSSDQb DQb DQb VSSVDDQDQb DQb VSS

Page 23

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 4 of 28Pin Configurations (continued)234 5671ABCDEFGHJKLMNPRTDONC/576MNC/1GDQPcDQc

Page 24

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 5 of 28Pin Configurations (continued)ABCDEFGHJKLMNPRTUVW123456789 1110DQgDQgDQgDQg

Page 25

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 6 of 28ADV/LDInput-SynchronousAdvance/Load Input used to advance the on-chip addre

Page 26

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 7 of 28Functional OverviewThe CY7C1470V25/CY7C1472V25/CY7C1474V25 aresynchronous-p

Page 27

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 8 of 28CY7C1474V25, BWa,b,c,d for CY7C1470V25 and BWa,b forCY7C1472V25) inputs mus

Page 28

CY7C1470V25CY7C1472V25CY7C1474V25Document #: 38-05290 Rev. *I Page 9 of 28Partial Write Cycle Description[1, 2, 3, 8]Function (CY7C1470V25) WE BWdBWc

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