CY7C1471V33_12 CYPRESS [Cypress Semiconductor], CY7C1471V33_12 Datasheet

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CY7C1471V33_12

Manufacturer Part Number
CY7C1471V33_12
Description
Manufacturer
CYPRESS [Cypress Semiconductor]
Datasheet
72-Mbit (2 M × 36) Flow-Through SRAM with NoBL™ Architecture
Features
Selection Guide
Cypress Semiconductor Corporation
Document Number: 38-05288 Rev. *N
Maximum access time
Maximum operating current
Maximum CMOS standby current
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
3.3 V/2.5 V I/O supply (V
Fast clock-to-output times
Clock enable (CEN) pin to enable clock and suspend operation
Synchronous self timed writes
Asynchronous output enable (OE)
CY7C1471V33 available in JEDEC-standard Pb-free 100-pin
TQFP
Three chip enables (CE
expansion
Automatic power down feature available using ZZ mode or CE
deselect
Burst capability – linear or interleaved burst order
Low standby power
6.5 ns (for 133-MHz device)
DDQ
1
, CE
)
2
, CE
3
72-Mbit (2 M × 36) Flow-Through SRAM with
) for simple depth
198 Champion Court
Description
Functional Description
The CY7C1471V33 is 3.3 V, 2 M × 36 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 CY7C1471V33 is equipped with the advanced
No Bus Latency (NoBL) logic required to enable consecutive
read or 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 two or four byte write select
(BW
with on-chip synchronous self timed write circuitry.
Three synchronous chip enables (CE
asynchronous output enable (OE) provide for 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.
X
) and a write enable (WE) input. All writes are conducted
San Jose
NoBL™ Architecture
,
CA 95134-1709
CY7C1471V33
1
, CE
Revised June 1, 2012
133 MHz
2
305
120
, CE
6.5
408-943-2600
3
) and an
Unit
mA
mA
ns

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CY7C1471V33_12 Summary of contents

Page 1

M × 36) Flow-Through SRAM with NoBL™ Architecture 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 ...

Page 2

Logic Block Diagram – CY7C1471V33 ADDRESS A0, A1, A REGISTER MODE CE CLK C CEN ADV/ CE1 CE2 CE3 ZZ Document Number: 38-05288 Rev A1 ...

Page 3

Contents Pin Configurations ........................................................... 4 Pin Definitions .................................................................. 5 Functional Overview ........................................................ 6 Single Read Accesses ................................................ 6 Burst Read Accesses .................................................. 6 Single Write Accesses ................................................. 6 Burst Write Accesses .................................................. 6 Sleep Mode ................................................................. 6 Interleaved Burst Address ...

Page 4

Pin Configurations DQP DDQ BYTE DDQ ...

Page 5

Pin Definitions Name I Input- Address inputs used to select one of the address locations. Sampled at the rising edge of the CLK synchronous A are fed to the two-bit burst counter. [1:0] ...

Page 6

Functional Overview The CY7C1471V33 is synchronous flow through burst SRAMs designed specifically to eliminate wait states during write-read transitions. All synchronous inputs pass through input registers controlled by the rising edge of the clock. The clock signal is qualified with ...

Page 7

Interleaved Burst Address Table (MODE = Floating First Second Third Address Address Address A1:A0 A1:A0 A1: Mode Electrical Characteristics Parameter Description I Sleep ...

Page 8

Truth Table The truth table for CY7C1471V33 follows. Operation Deselect cycle Deselect cycle Deselect cycle Continue deselect cycle Read cycle (begin burst) Read cycle (continue burst) NOP/dummy read (begin burst) Dummy read (continue burst) Write cycle (begin burst) Write cycle ...

Page 9

Truth Table for Read/Write The read-write truth table for CY7C1471V33 follows. Function Read Write no bytes written Write byte A – (DQ and DQP ) A A Write byte B – (DQ and DQP ) B B Write byte C ...

Page 10

Maximum Ratings Exceeding maximum ratings may shorten the useful life of the device. These user guidelines are not tested. Storage temperature ................................ –65 C to +150 C Ambient temperature with power applied .......................................... –55 C to +125 C Supply voltage ...

Page 11

Capacitance [13] Parameter Description C Address input capacitance ADDRESS C Data input capacitance DATA C Control input capacitance CTRL C Clock input capacitance CLK C Input/Output capacitance IO Thermal Resistance [13] Parameter Description  Thermal resistance JA (junction to ambient) ...

Page 12

Switching Characteristics Over the Operating Range [14, 15] Parameter [16] t POWER Clock t Clock cycle time CYC t Clock HIGH CH t Clock LOW CL Output Times t Data output valid after CLK rise CDV t Data output hold ...

Page 13

Switching Waveforms CYC CLK t CENS t CENH t CH CEN t CES t CEH CE ADV/ ADDRESS D(A1 COM M ...

Page 14

Switching Waveforms (continued) Figure 4. NOP, STALL and DESELECT Cycles 1 2 CLK CEN CE ADV/ [A: ADDRESS D(A1) DQ COMMAND WRITE READ D(A1) Q(A2) Notes 23. For this waveform ZZ is tied LOW. 24. When ...

Page 15

Switching Waveforms (continued) CLK ZZ I SUPPLY ALL INPUTS (except ZZ) Outputs (Q) Notes 26. Device must be deselected when entering ZZ mode. See 27. DQs are in high Z when exiting ZZ sleep mode. Document Number: 38-05288 Rev. *N ...

Page 16

Ordering Information Cypress offers other versions of this type of product in many different configurations and features. The below table contains only the list of parts that are currently available. For a complete listing of all options, visit the Cypress ...

Page 17

Package Diagrams Figure 6. 100-pin TQFP (14 × 20 × 1.4 mm) A100RA Package Outline, 51-85050 Document Number: 38-05288 Rev. *N CY7C1471V33 51-85050 *D Page ...

Page 18

Acronyms Acronym Description CMOS complementary metal oxide semiconductor CE chip enable CEN clock enable I/O input/output JEDEC joint electron devices engineering council NoBL no bus latency OE output enable SRAM static random access memory TQFP thin quad flat pack TTL ...

Page 19

Document History Page Document Title: CY7C1471V33, 72-Mbit (2 M × 36) Flow-Through SRAM with NoBL™ Architecture Document Number: 38-05288 Orig. of Rev. ECN Change ** 114675 PKS *A 121521 CJM *B 223721 NJY *C 235012 RYQ *D 243572 NJY *E ...

Page 20

Document History Page (continued) Document Title: CY7C1471V33, 72-Mbit (2 M × 36) Flow-Through SRAM with NoBL™ Architecture Document Number: 38-05288 Orig. of Rev. ECN Change *G 331513 PCI *H 416221 RXU *I 472335 VKN *J 1274732 VKN / AESA *K ...

Page 21

Document History Page (continued) Document Title: CY7C1471V33, 72-Mbit (2 M × 36) Flow-Through SRAM with NoBL™ Architecture Document Number: 38-05288 Orig. of Rev. ECN Change *N 3633894 PRIT Document Number: 38-05288 Rev. *N Submission Date 06/01/2012 Updated Features (Removed CY7C1473V33, ...

Page 22

Sales, Solutions, and Legal Information Worldwide Sales and Design Support Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office closest to you, visit us at Cypress Locations. Products Automotive cypress.com/go/automotive Clocks & ...

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