Cypress CY7C1415BV18, CY7C1411BV18, CY7C1413BV18, CY7C1426BV18 manual BWS0

Page 11

CY7C1411BV18, CY7C1426BV18

CY7C1413BV18, CY7C1415BV18

Write Cycle Descriptions

The write cycle description table for CY7C1426BV18 follows. [2, 10]

BWS0

K

K

Comments

L

L–H

During the Data portion of a write sequence, the single byte (D[8:0]) is written into the device.

L

L–H

During the Data portion of a write sequence, the single byte (D[8:0]) is written into the device.

H

L–H

No data is written into the device during this portion of a write operation.

 

 

 

 

H

L–H

No data is written into the device during this portion of a write operation.

 

 

 

 

Write Cycle Descriptions

The write cycle description table for CY7C1415BV18 follows. [2, 10]

BWS0

BWS1

BWS2

BWS3

K

K

Comments

L

L

L

L

L–H

During the Data portion of a write sequence, all four bytes (D[35:0]) are written into

 

 

 

 

 

 

the device.

 

 

 

 

 

 

 

L

L

L

L

L–H

During the Data portion of a write sequence, all four bytes (D[35:0]) are written into

 

 

 

 

 

 

the device.

L

H

H

H

L–H

During the Data portion of a write sequence, only the lower byte (D[8:0]) is written

 

 

 

 

 

 

into the device. D[35:9] remains unaltered.

L

H

H

H

L–H

During the Data portion of a write sequence, only the lower byte (D[8:0]) is written

 

 

 

 

 

 

into the device. D[35:9] remains unaltered.

H

L

H

H

L–H

During the Data portion of a write sequence, only the byte (D[17:9]) is written into

 

 

 

 

 

 

the device. D[8:0] and D[35:18] remains unaltered.

H

L

H

H

L–H

During the Data portion of a write sequence, only the byte (D[17:9]) is written into

 

 

 

 

 

 

the device. D[8:0] and D[35:18] remains unaltered.

H

H

L

H

L–H

During the Data portion of a write sequence, only the byte (D[26:18]) is written into

 

 

 

 

 

 

the device. D[17:0] and D[35:27] remains unaltered.

H

H

L

H

L–H

During the Data portion of a write sequence, only the byte (D[26:18]) is written into

 

 

 

 

 

 

the device. D[17:0] and D[35:27] remains unaltered.

H

H

H

L

L–H

During the Data portion of a write sequence, only the byte (D[35:27]) is written into

 

 

 

 

 

 

the device. D[26:0] remains unaltered.

H

H

H

L

L–H

During the Data portion of a write sequence, only the byte (D[35:27]) is written into

 

 

 

 

 

 

the device. D[26:0] remains unaltered.

H

H

H

H

L–H

No data is written into the device during this portion of a write operation.

 

 

 

 

 

 

 

H

H

H

H

L–H

No data is written into the device during this portion of a write operation.

 

 

 

 

 

 

 

Document Number: 001-07037 Rev. *D

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Contents Selection Guide FeaturesConfigurations Functional DescriptionDoff Logic Block Diagram CY7C1411BV18Logic Block Diagram CY7C1426BV18 Logic Block Diagram CY7C1415BV18 Logic Block Diagram CY7C1413BV18CY7C1426BV18 4M x Pin ConfigurationBall Fbga 15 x 17 x 1.4 mm Pinout CY7C1411BV18 4M xCY7C1415BV18 1M x CY7C1413BV18 2M xWPS BWS Pin Name Pin Description Pin DefinitionsTDO for Jtag Power Supply Inputs to the Core of the DevicePower Supply Inputs for the Outputs of the Device Referenced with Respect toFunctional Overview Echo Clocks Application ExampleDepth Expansion Programmable ImpedanceComments Truth TableWrite Cycle Descriptions OperationBWS0 Ieee 1149.1 Serial Boundary Scan Jtag Idcode TAP Controller State Diagram TAP Electrical Characteristics TAP Controller Block DiagramTAP Timing and Test Conditions TAP AC Switching CharacteristicsRegister Name Bit Size Identification Register DefinitionsScan Register Sizes Instruction CodesBit # Bump ID Boundary Scan OrderDLL Constraints Power Up Sequence in QDR-II SramPower Up Sequence Maximum Ratings Electrical CharacteristicsDC Electrical Characteristics AC Electrical Characteristics Parameter Description Test Conditions Fbga Unit CapacitanceThermal Resistance Parameter Description Test Conditions Max UnitRPS, WPS Switching CharacteristicsHigh LOWDLL Timing Static to DLL ResetRead/Write/Deselect Sequence 29, 30 Switching WaveformsOrdering Information 250 167 Ball Fbga 15 x 17 x 1.4 mm Package DiagramWorldwide Sales and Design Support Products PSoC Solutions Sales, Solutions, and Legal Information