K522H1HACF-B050 Datasheet, PDF (38/94 Pages) Samsung semiconductor – MCP Specification

K522H1HACF-B050
datasheet
Rev. 1.0
MCP Memory
4.3 COPY-BACK PROGRAM
Copy-Back program with Read for Copy-Back is configured to quickly and efficiently rewrite data stored in one page without data re-loading when the bit
error is not in data stored. Since the time-consuming re-loading cycles are removed, the system performance is improved. The benefit is especially obvi-
ous when a portion of a block is updated and the rest of the block also needs to be copied to the newly assigned free block. Copy-Back operation is a
sequential execution of Read for Copy-Back and of copy-back program with the destination page address. A read operation with "35h" command and the
address of the source page moves the whole 2,112 bytes(1,056 Words) data into the internal data buffer. A bit error is checked by sequential reading the
data output. In the case where there is no bit error, the data do not need to be reloaded. Therefore Copy-Back program operation is initiated by issuing
Page-Copy Data-Input command (85h) with destination page address. Actual programming operation begins after Program Confirm command (10h) is
issued. Once the program process starts, the Read Status Register command (70h) may be entered to read the status register. The system controller can
detect the completion of a program cycle by monitoring the R/B output, or the Status bit(I/O 6) of the Status Register. When the Copy-Back Program is
complete, the Write Status Bit(I/O 0) may be checked(Figure 11 & Figure 12). The command register remains in Read Status command mode until
another valid command is written to the command register.
During copy-back program, data modification is possible using random data input command (85h) as shown in Figure 12.
Figure 11. Page Copy-Back Program Operation
tR
R/B
tPROG
I/Ox 00h ^{Add.(5Cycles)} 35h
Data Output 85h Add.(5Cycles) 10h
70h
Col. Add.1,2 & Row Add.1,2,3
Source Address
Col. Add.1,2 & Row Add.1,2,3
Destination Address
NOTE :
1) Copy-Back Program operation is allowed only within the same memory plane.
"0"
I/O0
Pass
"1"
Fail
Figure 12. Page Copy-Back Program Operation with Random Data Input
R/B
tR
tPROG
I/Ox 00h Add.(5Cycles) 35h
Data Output 85h Add.(5Cycles) Data 85h Add.(2Cycles) Data 10h
70h
Col. Add.1,2 & Row Add.1,2,3
Col. Add.1,2 & Row Add.1,2,3
Col. Add.1,2
Source Address
Destination Address
There is no limitation for the number of repetition.
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