Cypress NoBL CY7C1471V25 User Manual

Browse online or download User Manual for Unknown Cypress NoBL CY7C1471V25. Cypress NoBL CY7C1471V25 User's Manual

  • Download
  • Add to my manuals
  • Print
  • Page
    / 32
  • Table of contents
  • BOOKMARKS
  • Rated. / 5. Based on customer reviews
Page view 0
72-Mbit (2M x 36/4M x 18/1M x 72)
Flow-Through SRAM with NoBL™ Architecture
CY7C1471V25
CY7C1473V25
CY7C1475V25
Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600
Document #: 38-05287 Rev. *I Revised July 04, 2007
Features
No Bus Latency™ (NoBL™) architecture eliminates dead
cycles between write and read cycles
Supports up to 133 MHz bus operations with zero wait states
Data is transferred on every clock
Pin compatible and functionally equivalent to ZBT™ devices
Internally self timed output buffer control to eliminate the
need to use OE
Registered inputs for flow through operation
Byte Write capability
2.5V/1.8V IO supply (V
DDQ
)
Fast clock-to-output times
6.5 ns (for 133-MHz device)
Clock Enable (CEN) pin to enable clock and suspend
operation
Synchronous self timed writes
Asynchronous Output Enable (OE)
CY7C1471V25, CY7C1473V25 available in
JEDEC-standard Pb-free 100-pin TQFP, Pb-free and
non-Pb-free 165-Ball FBGA package. CY7C1475V25
available in Pb-free and non-Pb-free 209-Ball FBGA
package.
Three Chip Enables (CE
1
, CE
2
, CE
3
) for simple depth
expansion.
Automatic power down feature available using ZZ mode or
CE deselect.
IEEE 1149.1 JTAG Boundary Scan compatible
Burst Capability - linear or interleaved burst order
Low standby power
Functional Description
[1]
The CY7C1471V25, CY7C1473V25, and CY7C1475V25 are
2.5V, 2M x 36/4M x 18/1M x 72 synchronous flow through burst
SRAMs designed specifically to support unlimited true
back-to-back read or write operations without the insertion of
wait states. The CY7C1471V25, CY7C1473V25, and
CY7C1475V25 are equipped with the advanced No Bus
Latency (NoBL) logic required to enable consecutive read or
write operations with data 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 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 easy bank
selection and output tri-state control. To avoid bus contention,
the output drivers are synchronously tri-stated during the data
portion of a write sequence.
Selection Guide
133 MHz 100 MHz Unit
Maximum Access Time 6.5 8.5 ns
Maximum Operating Current 305 275 mA
Maximum CMOS Standby Current 120 120 mA
Note
1. For best practice recommendations, refer to the Cypress application note AN1064, SRAM System Guidelines.
[+] Feedback
Page view 0
1 2 3 4 5 6 ... 31 32

Summary of Contents

Page 1 - CY7C1475V25

72-Mbit (2M x 36/4M x 18/1M x 72)Flow-Through SRAM with NoBL™ ArchitectureCY7C1471V25CY7C1473V25CY7C1475V25Cypress Semiconductor Corporation • 198 Cha

Page 2

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 10 of 32Because the CY7C1471V25, CY7C1473V25, andCY7C1475V25 are common IO devices,

Page 3 - [+] Feedback

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 11 of 32Truth Table The truth table for CY7C1471V25, CY7C1473V25, and CY7C1475V25 f

Page 4

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 12 of 32Truth Table for Read/Write The read-write truth table for CY7C1471V25 follo

Page 5

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 13 of 32IEEE 1149.1 Serial Boundary Scan (JTAG)The CY7C1471V25, CY7C1473V25, and CY

Page 6 - CY7C1473V25 (4M x 18)

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 14 of 32TAP RegistersRegisters are connected between the TDI and TDO balls andenabl

Page 7 - CY7C1475V25 (1M × 72)

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 15 of 32signal while in transition (metastable state). This does notharm the device

Page 8

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 16 of 32TAP AC Switching Characteristics Over the Operating Range[10, 11]Parameter

Page 9

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 17 of 321.8V TAP AC Test ConditionsInput pulse levels ...

Page 10

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 18 of 32Scan Register SizesRegister Name Bit Size (x36) Bit Size (x18) Bit Size (x7

Page 11

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 19 of 32Boundary Scan Exit Order (2M x 36)Bit # 165-Ball ID Bit # 165-Ball ID Bit #

Page 12

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 2 of 32Logic Block Diagram – CY7C1471V25 (2M x 36)Logic Block Diagram – CY7C1473V25

Page 13

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 20 of 32Boundary Scan Exit Order (1M x 72) Bit # 209-Ball ID Bit # 209-Ball ID Bit

Page 14

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 21 of 32Maximum RatingsExceeding maximum ratings may impair the useful life of thed

Page 15

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 22 of 32CapacitanceTested initially and after any design or process change that may

Page 16

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 23 of 32Switching Characteristics Over the Operating Range. Timing reference level

Page 17

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 24 of 32Switching WaveformsFigure 1 shows read-write timing waveform.[19, 20, 21]Fi

Page 18

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 25 of 32Figure 2 shows NOP, STALL and DESELECT Cycles waveform.[19, 20, 22]Figure 2

Page 19

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 26 of 32Figure 3 shows ZZ Mode timing waveform.[23, 24]Figure 3. ZZ Mode TimingSwit

Page 20

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 27 of 32Ordering InformationNot all of the speed, package and temperature ranges ar

Page 21

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 28 of 32Package Diagrams Figure 4. 100-Pin Thin Plastic Quad Flatpack (14 x 20 x 1.

Page 22 - AC Test Loads and Waveforms

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 29 of 32Figure 5. 165-Ball FBGA (15 x 17 x 1.4 mm), 51-85165Package Diagrams (cont

Page 23

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 3 of 32Logic Block Diagram – CY7C1475V25 (1M x 72)A0, A1, ACMODECE1CE2CE3OEREAD LOG

Page 24

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 30 of 32© Cypress Semiconductor Corporation, 2002-2007. The information contained h

Page 25

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 31 of 32Document History PageDocument Title: CY7C1471V25/CY7C1473V25/CY7C1475V25, 7

Page 26

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 32 of 32*H 472335 See ECN VKN Corrected the typo in the pin configuration for 209-B

Page 27

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 4 of 32Pin Configurations 100-Pin TQFP PinoutAAAAA1A0NC/288MNC/144MVSSVDDAAAAAADQPB

Page 28

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 5 of 32Pin Configurations (continued)100-Pin TQFP PinoutAAAAA1A0NC/288MNC/144MVSSV

Page 29

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 6 of 32Pin Configurations (continued)165-Ball FBGA (15 x 17 x 1.4 mm) Pinout CY7C1

Page 30

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 7 of 32Pin Configurations (continued)ABCDEFGHJKLMNPRTUVW12 34 5 6 78 9 1110DQgDQgD

Page 31

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 8 of 32Pin DefinitionsName IO DescriptionA0, A1, A Input-SynchronousAddress Inputs

Page 32

CY7C1471V25CY7C1473V25CY7C1475V25Document #: 38-05287 Rev. *I Page 9 of 32Functional OverviewThe CY7C1471V25, CY7C1473V25, and CY7C1475V25 aresynchron

Comments to this Manuals

No comments