Cypress NoBL CY7C1470BV25 User Manual

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72-Mbit (2M x 36/4M x 18/1M x 72)
Pipelined SRAM with NoBL™ Architecture
CY7C1470BV25
CY7C1472BV25, CY7C1474BV25
Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600
Document #: 001-15032 Rev. *D Revised February 29, 2008
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 IO 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
CY7C1470BV25, CY7C1472BV25 available in
JEDEC-standard Pb-free 100-pin TQFP, Pb-free and
non-Pb-free 165-ball FBGA package. CY7C1474BV25
available in Pb-free and non-Pb-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 CY7C1470BV25, CY7C1472BV25, and CY7C1474BV25
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
or write operations with no wait states. The CY7C1470BV25,
CY7C1472BV25, and CY7C1474BV25 are equipped with the
advanced (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 in
systems that require frequent read or write transitions. The
CY7C1470BV25, CY7C1472BV25, and CY7C1474BV25 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
d
for CY7C1470BV25, BW
a
–BW
b
for
CY7C1472BV25, and BW
a
–BW
h
for CY7C1474BV25) 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. To avoid bus contention,
the output drivers are synchronously tri-stated during the data
portion of a write sequence.
Selection Guide
Description 250 MHz 200 MHz 167 MHz Unit
Maximum Access Time 3.0 3.0 3.4 ns
Maximum Operating Current 450 450 400 mA
Maximum CMOS Standby Current 120 120 120 mA
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Summary of Contents

Page 1 - CY7C1472BV25, CY7C1474BV25

72-Mbit (2M x 36/4M x 18/1M x 72)Pipelined SRAM with NoBL™ ArchitectureCY7C1470BV25CY7C1472BV25, CY7C1474BV25Cypress Semiconductor Corporation • 198 C

Page 2 - [+] Feedback

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 10 of 29Table 4. Truth TableThe truth table for CY7C1470BV25, CY7C1472BV25,

Page 3

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 11 of 29Table 5. Partial Write Cycle DescriptionThe partial write cycle desc

Page 4

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 12 of 29IEEE 1149.1 Serial Boundary Scan (JTAG)The CY7C1470BV25, CY7C1472BV25

Page 5

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 13 of 29Instruction RegisterThree-bit instructions can be serially loaded int

Page 6

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 14 of 29possible to capture all other signals and simply ignore the valueof t

Page 7

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 15 of 29TAP AC Switching Characteristics Over the Operating Range [9, 10]Para

Page 8

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 16 of 292.5V TAP AC Test ConditionsInput pulse levels...

Page 9

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 17 of 29Table 8. Identification CodesInstruction Code DescriptionEXTEST 000

Page 10

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 18 of 29Boundary Scan Exit Order (4M x 18)Bit # 165-Ball ID Bit # 165-Ball ID

Page 11

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 19 of 29Maximum Ratings Exceeding maximum ratings may impair the useful life

Page 12

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 2 of 29Logic Block Diagram – CY7C1470BV25 (2M x 36)Logic Block Diagram – CY7C

Page 13

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 20 of 29ISB3Automatic CE Power Down Current—CMOS InputsMax. VDD, Device Desel

Page 14

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 21 of 29Switching Characteristics Over the Operating Range. Timing reference

Page 15

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 22 of 29Switching Waveforms Figure 6 shows read-write timing waveform.[19, 20

Page 16

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 23 of 29Figure 7 shows NOP, STALL and DESELECT Cycles waveform.[19, 20, 22]Fi

Page 17

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 24 of 29Ordering InformationNot all of the speed, package and temperature ran

Page 18

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 25 of 29250 CY7C1470BV25-250AXC 51-85050 100-pin Thin Quad Flat Pack (14 x 20

Page 19

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 26 of 29Package Diagrams Figure 9. 100-Pin Thin Plastic Quad Flatpack (14 x

Page 20

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 27 of 29Figure 10. 165-Ball FBGA (15 x 17 x 1.4 mm), 51-85165Package Diagram

Page 21

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 28 of 29Figure 11. 209-Ball FBGA (14 x 22 x 1.76 mm), 51-85167Package Diagra

Page 22

Document #: 001-15032 Rev. *D Revised February 29, 2008 Page 29 of 29NoBL and No Bus Latency are trademarks of Cypress Semiconductor Corporation. ZBT

Page 23

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 3 of 29Logic Block Diagram – CY7C1474BV25 (1M x 72)A0, A1, ACMODECE1CE2CE3OER

Page 24

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 4 of 29Pin Configurations AAAAA1A0VSSVDDAAAAAAVDDQVSSDQb DQb DQb VSSVDDQDQb D

Page 25

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 5 of 29Pin Configurations (continued)165-Ball FBGA (15 x 17 x 1.4 mm) Pinout

Page 26

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 6 of 29Pin Configurations (continued)CY7C1474BV25 (1M × 72)209-Ball FBGA (14

Page 27

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 7 of 29Table 1. Pin DefinitionsPin Name IO Type Pin DescriptionA0A1AInput-Sy

Page 28

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 8 of 29Functional OverviewThe CY7C1470BV25, CY7C1472BV25, and CY7C1474BV25are

Page 29

CY7C1470BV25CY7C1472BV25, CY7C1474BV25Document #: 001-15032 Rev. *D Page 9 of 29access (read, write, or deselect) is latched into the AddressRegister

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