SMS512DFA5E NUMONYX, SMS512DFA5E Datasheet - Page 9

• Manufacturer Part Number: SMS512DFA5E
• Description: MICROSD CARD SMS 512MB FLASH MEM
• Manufacturer: NUMONYX

Specifications of SMS512DFA5E

• Memory Size: 512MB
• Memory Type: SD (Secure Digital)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

SMSxxxDF
2
2.1
2.2
2.3
Table 7.
Blocks
Sector
WP-groups
Protected area
structure
Type of
Memory array partitioning
The basic unit of data transfer to/from the SD memory card is the byte. The memory array is
divided into several structures as described below and summarized in
array
Block
The block is the unit structure related to block-oriented read and write commands. Its size is
the number of bytes that are transferred when a block-oriented read or write command is
sent by the host. The SD memory card block size is either programmable or fixed. The
information about allowed block sizes and programmability is stored in the CSD register.
The details of the memory array structure and the number of addressable blocks are shown
in
Sector
The sector is the unit structure related to the erase commands. Its size is the number of
blocks that are erased at any one time. The sector size is fixed for each device. The
information about the sector size (in blocks) is stored in the CSD register.
Write protect group (WP-group)
The WP-group is the smallest structure that may be individually protected. Its size is the
number of sectors that are write protected with one bit. The information about the write
protect group size is stored in the CSD register.
Memory array structures
Table 7: Memory array
512 bytes
structures.
Sector
Block
Block
Number of structures in 512-Mbyte, 1-Gbyte
Unit
512-Mbyte
978944
10240
128
devices
16
structures.
1999872
1-Gbyte
28672
128
32
1024 bytes
Number of structures in 2-Gbyte
Sector
Block
Block
Unit
Memory array partitioning
devices
Table 7: Memory
1960448
2-Gbyte
20480
128
64
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