HB28K032MM3 Renesas Electronics America, HB28K032MM3 Datasheet - Page 23
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HB28K032MM3
Manufacturer Part Number
HB28K032MM3
Description
Manufacturer
Renesas Electronics America
Type
MultiMedia Cardr
Datasheet
1.HB28K032MM3.pdf
(91 pages)
Specifications of HB28K032MM3
Density
32MByte
Operating Supply Voltage (typ)
3.3V
Operating Temperature (min)
-25C
Operating Temperature (max)
85C
Package Type
Not Required
Mounting
Surface Mount
Pin Count
7
Operating Temperature Classification
Commercial
Operating Supply Voltage (min)
2.7V
Operating Supply Voltage (max)
3.6V
Programmable
Yes
Lead Free Status / RoHS Status
Compliant
HB28K032/L064/J128/J256/J512MM3, HB28K032/L064/J128/J256RM3
MultiMediaCard Communication
All communication between host and cards is controlled by the host (master). The host sends commands
and, depending on the command, receives a corresponding response from the selected card. In this chapter
the commands to control these Renesas MultiMediaCards, the card responses and the contents of the status
and error field included in the responses, are defined.
Memory Array Partitioning
The basic unit of data transfer to/from the MultiMediaCard is one byte. All data transfer operations which
require a block size always define block lengths as integer multiples of bytes. Some special functions need
other partition granularity. For block-oriented commands, the following definition is used:
For devices which have erasable memory cells, special erase commands are defined. The granularity of the
erasable units is:
For devices which include a write protection:
Each erasable unit (erase group) has a special “tag” bit. This bit may be set or cleared by special
commands to tag the unit. All tagged units will be erased in parallel by one erase command following a
number of tag commands. All tag bits are cleared by each command except a tag command. Therefore,
immediately after a sequence of tag commands an erase command has to be sent by the host. Commands
others than tagging or erasing abort a tag-erase cycle irregularly.
Rev.0.02, Sep.15.2004, page 23 of 89
Block: is the unit which is related to the block-oriented read and write commands. Its size is the
Sector: In these Renesas MultiMediaCards, this size is same as the WRITE_BLK_LEN in CSD.
Erase Group: is the smallest number of consecutive write blocks, which can be addressed for erased.
WP-Group: is the minimal unit which may have individual write protection. Its size is the number of
number of bytes which will be transferred when one block command is sent by the host. The size of a
block is either programmable or fixed. The information about allowed block sizes and the
programmability is stored in the CSD.
The size of the Erase Group is card specific and stored in the CSD.
erase groups which will be write protected by one bit. The size of a WP-group is fixed for each
device. The information about the size is stored in the CSD.