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CY7C1386D, CY7C1386F

CY7C1387D, CY7C1387F

Document Number: 38-05545 Rev. *H Page 12 of 36

Truth Table for Read/Write

The Truth Table for Read/Write for CY7C1386D and CY7C1386F follows.

[11, 12]

Function (CY7C1386D/CY7C1386F) GW BWE BW

Read H H X X X X

Read HLHHHH

Write byte A – (DQ

and DQP

)HLHHHL

Write byte B – (DQ

and DQP

)HLHHLH

Write bytes B, A H L H H L L

Write byte C – (DQ

and DQP

)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

and DQP

)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 HLLLLL

Write all bytes L X X X X X

Truth Table for Read/Write

The Truth Table for Read/Write for CY7C1387D and CY7C1387F follows.

[11, 12]

Function (CY7C1387D/CY7C1387F) GW BWE BW

Read H H X X

Read H L H H

Write byte A – (DQ

and DQP

)HLHL

Write byte B – (DQ

and DQP

)HLLH

Write all bytes H L L L

Write all bytes L X X X

Notes

11. The DQ pins are controlled by the current cycle and the OE

signal. OE is asynchronous and is not sampled with the clock.

12. Table only lists a partial listing of the byte write combinations. Any combination of BW

is valid appropriate write is done based on which byte write is active.

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