hb28d032bp2 Renesas Electronics Corporation., hb28d032bp2 Datasheet - Page 21

• Manufacturer Part Number: hb28d032bp2
• Description: Mobile Embedded Flash With Multimediacard-tm Interface 16 Mbyte/32 Mbyte
• Manufacturer: Renesas Electronics Corporation.

The data block length is computed as 2
Data Block Length
WRITE_BLK_LEN
0
1
......
11
12–15
The block length might therefore be in the range 1, 2, 4...2048 bytes. This parameter defines the block
length if WRITE_BLK_PARTIAL is not set. If WRITE_BLK_PARTIAL is set this parameter contains the
maximum allowed value of the block length in bytes. All block lengths between one and this value are
permitted. The actual block size is programmed by the command SET_BLOCKLEN (CMD16). These
Hitachi Mobile Embedded Flashes support blocks with the length 512 bytes.
WRITE_BLK_LEN is permanently assigned to the value 0x9 (512 bytes).
WRITE_BLK_PARTIAL defines whether partial block sizes can be used in block read and block write
commands. WRITE_BLK_PARTIAL = 0 means that only the block size defined by WRITE_BLK_LEN
can be used for block-oriented data transfers. WRITE_BLK_PARTIAL = 1 means that smaller blocks can
be used as well. The minimum block size will be equal to minimum addressable unit (one byte). These
Hitachi Mobile Embedded Flashes support no partial block write. The parameter WRITE_BLK_PARTIAL
is permanently assigned to the value ‘0’.
Indicates the selected group of file formats. The default value is ‘0’. The usage of this field is shown in
table “File_Formats”.
Defines if the contents are an original (COPY = ’0’) or a copy (= ’1’). The COPY bit is a one time
programmable bit, being set by the customer. The default value is ‘0’.
Permanently protects the whole card content against overwriting or erasing (all write and erase commands
for this card is a permanently disabled). This parameter is one-time programmable by the customer. The
default value is ‘0’ (not protected).
WRITE_BLK_LEN
WRITE_BLK_PARTIAL
FILE_FORMAT_GRP
COPY
PERM_WRITE_PROTECT
Block length
2
2
......
2
reserved
0
1
11
= 1 byte
= 2 bytes
= 2048 bytes
WRITE_BLK_LEN
.
Remark
HB28E016/D032BP2
The parameter
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