Cypress CY7C1440AV33 manual Truth Table for Read/Write4,8,9, Truth Table for Read/Write4, 8

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CY7C1440AV33

CY7C1442AV33

CY7C1446AV33

Truth Table (continued)[2, 3, 4, 5, 6, 7]

Operation

Add. Used

CE1

CE2

CE3

ZZ

ADSP

ADSC

ADV

WRITE

OE

CLK

DQ

READ Cycle, Suspend Burst

Current

X

X

X

L

H

H

H

H

H

L-H

Tri-State

 

 

 

 

 

 

 

 

 

 

 

 

 

READ Cycle, Suspend Burst

Current

H

X

X

L

X

H

H

H

L

L-H

Q

 

 

 

 

 

 

 

 

 

 

 

 

 

READ Cycle, Suspend Burst

Current

H

X

X

L

X

H

H

H

H

L-H

Tri-State

 

 

 

 

 

 

 

 

 

 

 

 

 

WRITE Cycle, Suspend Burst

Current

X

X

X

L

H

H

H

L

X

L-H

D

 

 

 

 

 

 

 

 

 

 

 

 

 

WRITE Cycle, Suspend Burst

Current

H

X

X

L

X

H

H

L

X

L-H

D

 

 

 

 

 

 

 

 

 

 

 

 

 

Truth Table for Read/Write[4,8,9]

Function (CY7C1440AV33)

GW

BWE

BWD

BWC

BWB

BWA

Read

H

H

X

X

X

X

 

 

 

 

 

 

 

Read

H

L

H

H

H

H

 

 

 

 

 

 

 

Write Byte A – (DQA and DQPA)

H

L

H

H

H

L

Write Byte B – (DQB and DQPB)

H

L

H

H

L

H

Write Bytes B, A

H

L

H

H

L

L

 

 

 

 

 

 

 

Write Byte C – (DQC and DQPC)

H

L

H

L

H

H

Write Bytes C, A

H

L

H

L

H

L

 

 

 

 

 

 

 

Write Bytes C, B

H

L

H

L

L

H

 

 

 

 

 

 

 

Write Bytes C, B, A

H

L

H

L

L

L

 

 

 

 

 

 

 

Write Byte D – (DQD and DQPD)

H

L

L

H

H

H

Write Bytes D, A

H

L

L

H

H

L

 

 

 

 

 

 

 

Write Bytes D, B

H

L

L

H

L

H

 

 

 

 

 

 

 

Write Bytes D, B, A

H

L

L

H

L

L

 

 

 

 

 

 

 

Write Bytes D, C

H

L

L

L

H

H

 

 

 

 

 

 

 

Write Bytes D, C, A

H

L

L

L

H

L

 

 

 

 

 

 

 

Write Bytes D, C, B

H

L

L

L

L

H

 

 

 

 

 

 

 

Write All Bytes

H

L

L

L

L

L

 

 

 

 

 

 

 

Write All Bytes

L

X

X

X

X

X

 

 

 

 

 

 

 

Truth Table for Read/Write[4, 8, 9]

Function (CY7C1442AV33)

GW

BWE

BWB

BWA

Read

H

H

X

X

 

 

 

 

 

Read

H

L

H

H

 

 

 

 

 

Write Byte A – (DQA and DQPA)

H

L

H

L

Write Byte B – (DQB and DQPB)

H

L

L

H

Write Bytes B, A

H

L

L

L

 

 

 

 

 

Write All Bytes

H

L

L

L

 

 

 

 

 

Write All Bytes

L

X

X

X

 

 

 

 

 

Notes:

8.BWx represents any byte write signal. To enable any byte write BWx, a Logic LOW signal should be applied at clock rise.Any number of bye writes can be enabled at the same time for any given write.

9.Table only lists a partial listing of the byte write combinations. Any combination of BWX is valid. Appropriate write will be done based on which byte write is active.

Document #: 38-05383 Rev. *E

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Contents Selection Guide FeaturesFunctional Description1 250 MHz 200 MHz 167 MHz UnitLogic Block Diagram CY7C1440AV33 1M x Logic Block Diagram CY7C1442AV33 2M xCY7C1440AV33 Pin Configurations Pin Tqfp Pinout CY7C1442AV33 2M xCY7C1442AV33 2M x Name Description Pin DefinitionsByte Write Select Inputs, active LOW. Qualified with Ground for the core of the device Power supply inputs to the core of the devicePower supply for the I/O circuitry Ground for the I/O circuitryFunctional Overview Linear Burst Address Table Mode = GND Interleaved Burst Address Table Mode = Floating or VDDZZ Mode Electrical Characteristics Write Cycle, Suspend Burst Truth Table for Read/Write4,8,9Truth Table for Read/Write4, 8 Function CY7C1440AV33TAP Controller Block Diagram TAP Controller State DiagramIeee 1149.1 Serial Boundary Scan Jtag TAP Registers Performing a TAP ResetTAP Instruction Set TAP Timing Bypass5V TAP AC Test Conditions TAP AC Switching Characteristics Over the operating Range103V TAP AC Test Conditions 5V TAP AC Output Load EquivalentScan Register Sizes TAP DC Electrical Characteristics And Operating ConditionsIdentification Register Definitions Identification CodesBypass Ball Fbga Boundary Scan Order 14,15SAMPLE/PRELOAD CY7C1440AV33 1M x 36, CY7C1442AV33 2M x Bit # Ball IDBall Fbga Boundary Scan Order 14 CY7C1446AV33 512K x Bit # Ball IDOperating Range Electrical Characteristics Over the Operating Range17Maximum Ratings Ambient RangeThermal Resistance Capacitance19AC Test Loads and Waveforms Min Max Switching Characteristics Over the Operating Range 24250 200 167 Parameter Description Unit Min Set-up TimesSwitching Waveforms Read Cycle Timing26Write Cycle Timing26 Read/Write Cycle Timing26, 28 CLZZZ Mode Timing30 DON’T CareOrdering Information 250 Package Diagrams Pin Tqfp 14 x 20 x 1.4 mmBall Fbga 15 x 17 x 1.4 mm Ball Fbga 14 x 22 x 1.76 mm Document History Issue Date Orig. Description of ChangeDocument Number 473650 AC Switching Characteristics tableUpdated the Ordering Information table VKN
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