m58lt256jsb STMicroelectronics, m58lt256jsb Datasheet - Page 73

• Manufacturer Part Number: m58lt256jsb
• Description: 256 Mbit 16 Mb 16, Multiple Bank, Multilevel, Burst 1.8 V Supply, Secure Flash Memories
• Manufacturer: STMicroelectronics

M58LT256JST, M58LT256JSB
Appendix A
The following set of equations can be used to calculate a complete set of block addresses
using the information contained in Tables
To calculate the block base address from the block number:
First it is necessary to calculate the bank number and the block number offset. This can be
achieved using the following formulas:
If Bank_Number = 0, the block base address can be directly read from Tables
(parameter bank block addresses) in the block number offset row. Otherwise:
To calculate the bank number and the block number from the block base address:
If the address is in the range of the parameter bank, the bank number is 0 and the block
number can be directly read from tables
row that corresponds to the address given. Otherwise, the block number can be calculated
using the formulas below:
For the top configuration (M58LT256JST):
For the bottom configuration (M58LT256JSB):
For both configurations the bank number and the block number offset can be calculated
using the following formulas:
Bank_Number = (Block_Number − 3) / 16
Block_Number_Offset = Block_Number − 3 − (Bank_Number x 16)
Block_Base_Address = Bank_Base_Address + Block_Base_Address_Offset
Block_Number = ((NOT address) / 2
Block_Number = (address / 2
Bank_Number = (Block_Number − 3) / 16
Block_Number_Offset = Block_Number − 3 − (Bank_Number x 16)
Block address tables
16
) + 3
29
16
29
and
) + 3
to 34.
32
(parameter bank block addresses), in the
Block address tables
29
and
73/108
32