hb28d064mm2 Renesas Electronics Corporation., hb28d064mm2 Datasheet - Page 30

• Manufacturer Part Number: hb28d064mm2
• Description: Multimediacard 16 Mbyte/32 Mbyte/64 Mbyte/128 Mbyte
• Manufacturer: Renesas Electronics Corporation.

HB28E016/D032/D064/B128MM2
Write Protection Commands (class 6)
CMD
index
CMD28 ac
CMD29 ac
CMD30 adtc
Note:
Lock Card Command (class 7)
CMD
index
CMD42 adtc
30
1. 32 write protection bits (representing 32 write protect groups starting at the specified address)
Type Argument
Type Argument
followed by 16 CRC bits are transferred in a payload format via the data line. The last (least
significant) bit of the protection bits corresponds to the first addressed group. If the addresses of
the last groups are outside the valid range, then the corresponding write protection bits shall be
set to zero.
[31:0] data
address
[31:0] data
address
[31:0] write
protect data
address
[31:0] stuff bits
Resp
R1b
R1b
R1
Resp
R1b
Abbreviation
SET_WRITE_PROT if the card has write protection
CLR_WRITE_PROT if the card provides write protection
SEND_WRITE_PR
OT
Abbreviation
LOCK_UNLOCK
Command description
features, this command sets the write
protection bit of the addressed group.
The properties of write protection are
coded in the card specific data
(WP_GRP_SIZE).
features, this command clears the write
protection bit of the addressed group.
if the card provides write protection
features, this command asks the card
to send the status of the write
protection bits.*
Command description
used to set/reset the password or
lock/unlock the card. The size of the
data block is set by the
SET_BLOCK_LEN command.
1