MB95F814K datasheet(21/121 Pages) CYPRESS

21 / 121 page

MB95810K Series

Document Number: 002-04694 Rev. *A

Page 21 of 121

12. Memory Space

The memory space of the MB95810K Series is 64 Kbyte in size, and consists of an I/O area, an extended I/O area,

a data area, and a program area. The memory space includes areas for specific applications such as general-pur-

pose registers and a vector table.

12.1 I/O area (addresses: 0x0000 to 0x007F)

• This area contains the control registers and data registers for built-in peripheral functions.

• As the I/O area forms part of the memory space, it can be accessed in the same way as the memory. It can also

be accessed at high-speed by using direct addressing instructions.

12.2 Extended I/O area (addresses: 0x0F80 to 0x0FFF)

• This area contains the control registers and data registers for built-in peripheral functions.

• As the extended I/O area forms part of the memory space, it can be accessed in the same way as the memory.

12.3 Data area

• Static RAM is incorporated in the data area as the internal data area.

• The internal RAM size varies according to product.

• The RAM area from 0x0090 to 0x00FF can be accessed at high-speed by using direct addressing instructions.

• In MB95F818K, the area from 0x0090 to 0x047F is an extended direct addressing area. It can be accessed at high-

speed by direct addressing instructions with a direct bank pointer set.

• In MB95F816K, the area from 0x0090 to 0x047F is an extended direct addressing area. It can be accessed at high-

speed by direct addressing instructions with a direct bank pointer set.

• In MB95F814K, the area from 0x0090 to 0x028F is an extended direct addressing area. It can be accessed at high-

speed by direct addressing instructions with a direct bank pointer set.

• The area from 0x0100 to 0x01FF can be used as a general-purpose register area.

12.4 Program area

• The Flash memory is incorporated in the program area as the internal program area.

• The Flash memory size varies according to product.

• The area from 0xFFC0 to 0xFFFF is used as the vector table.

• The area from 0xFFBB to 0xFFBF is used to store data of the non-volatile register.

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