CY7C1338GDocument #: 38-05521 Rev. *D Page 7 of 17
Partial Truth Table for Read/Write[2, 7]
Function GW BWE BWDBWCBWBBWA
Read HHXXXX
Read HL HHHH
Write Byte A HLHHHL
Write Byte B H L H H L H
Write Bytes B, A H L H H L L
Write Byte C 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 H LLHHH
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, B H L L L H H
Write Bytes D, B, A H L L L H L
Write Bytes D, C, A HLLLLH
Write All Bytes HLLLLL
Write All Bytes L XXXXX
Note:
7. 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.