HB28E016BP2 Ver la hoja de datos (PDF) - Hitachi -> Renesas Electronics

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HB28E016BP2

Mobile Embedded Flash with MultiMediaCard™ Interface 16 Mbyte/32 Mbyte

Hitachi -> Renesas Electronics 

Multiply Factor for the Device Size

C_SIZE_MULT

0

1

2

3

4

5

6

7

MULT

22 = 4

23 = 8

24 = 16

25 = 32

26 = 64

27 = 128

28 = 256

29 = 512

Remark

HB28E016/D032BP2

The card capacity is shown at “C_SIZE”.

• ERASE_GRP_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:

size of erasable unit = (ERASE_GRP_SIZE + 1) * (ERASE_GRP_MULT + 1)

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).

• ERASE_GROUP_MULT

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.

• WP_GRP_SIZE

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.

• WP_GRP_ENABLE

The value is set to ‘1’, meaning group write protection is enabled.

• DEFAULT_ECC

19

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