Cypress Semiconductor CY7C1364C Instrukcja Użytkownika Pobierz pdf (Strona 9)

CY7C1364C

Document Number: 001-74592 Rev. *B Page 9 of 29

Truth Table for Read/Write

The Truth Table for Read/Write for CY7C1364C follows.

[6, 7]

Function GW BWE BW

Read H H X X X X

Read HLHHHH

Write Byte A – DQ

HLHHHL

Write Byte B – DQ

HLHHLH

Write Bytes B, A H L H H L L

Write Byte C – DQ

HLHLHH

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 – DQ

HLLHHH

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

Notes

6. X = “Don't Care.” H = Logic HIGH, L = Logic LOW.

7. WRITE

= L when any one or more Byte Write Enable signals (BW

, BW

)

and BWE

= L or GW = L. WRITE = H when all Byte Write Enable signals

(BW

,BW

BWE

= H.

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Cypress Semiconductor CY7C1364C Instrukcja Użytkownika Strona 9