HB28E016MM2 View Datasheet(PDF) - Hitachi -> Renesas Electronics

Part Name

Description

Manufacturer

HB28E016MM2

MultiMediaCard™ 16 Mbyte/32 Mbyte/64 Mbyte/128 MByte

Hitachi -> Renesas Electronics 

HB28E016/D032/D064/B128MM2

Hitachi MultiMediaCards support blocks with the length 512 bytes. The parameter WRITE_BLK_LEN is

permanently assigned to the value 0x9 (512 bytes).

• WRITE_BLK_PARTIAL

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 MultiMediaCards support no partial block write. The parameter WRITE_BLK_PARTIAL is

permanently assigned to the value ‘0’.

• FILE_FORMAT_GRP

Indicates the selected group of file formats. This field is read-only for ROM. The usage of this field is

shown in table “File_Formats”.

• COPY

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’.

• PERM_WRITE_PROTECT

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).

• TMP_WRITE_PROTECT

Temporarily protects the whole card content from being overwritten or erased (all write and erase

commands for this card are temporarily disabled). This parameter is programmable by the customer. The

default value is ‘0’ (not protected).

• FILE_FORMAT

Indicates the file format on the card. This field is read-only for ROM. The following formats are defined:

File_Formats

FILE_FORMAT_GRP

0

0

0

0

1

FILE_FORMAT Type

0

Hard disk-like file system with partition table

1

DOS FAT (floppy-like) with boot sector only (no partition table)

2

Universal File Format

3

Others/Unknown

0, 1, 2, 3

Reserved

20

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