hb28d032bp2 Renesas Electronics Corporation., hb28d032bp2 Datasheet - Page 19

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

Multiply Factor for the Device Size
C_SIZE_MULT
0
1
2
3
4
5
6
7
The card capacity is shown at “C_SIZE”.
The contents of this register is a 5 bit binary coded value, used to calculate the size of the erasable unit of
these Hitachi Mobile Embedded Flashes. The size of the erase unit (also referred to as erase group in
chapter “Memory Array Partitioning”) is determined by the ERASE_GRP_SIZE and the
ERASE_GRP_MULT entries of the CSD, using the following equation:
The parameter ERASE_GRP_SIZE is permanently assigned to the value ‘0’. The size of erasable unit for
these Hitachi Mobile Embedded Flashes is (0+1) * (15+1) = 16, which means that the 8 kByte area can be
erased in a single erase group command (CMD35 to CMD38).
A 5 bit binary coded value is used for calculating the size of the erasable unit of these Hitachi Mobile
Embedded Flashes. The parameter ERASE_GRP_MULT is permanently assigned to the value 0x0F. See
ERASE_GRP_SIZE section for detailed description.
The size of a write protection group. The content of this register is a binary coded value defining the
number of erase group. This parameter's value is 1, which means that a write protect group size is 16
kByte.
The value is set to ‘1’, meaning group write protection is enabled.
ERASE_GRP_SIZE
ERASE_GROUP_MULT
WP_GRP_SIZE
WP_GRP_ENABLE
DEFAULT_ECC
size of erasable unit = (ERASE_GRP_SIZE + 1) * (ERASE_GRP_MULT + 1)
MULT
2
2
2
2
2
2
2
2
2
3
4
5
6
7
8
9
= 4
= 8
= 16
= 32
= 64
= 128
= 256
= 512
Remark
HB28E016/D032BP2
19