Features
MAC7241 FLASH
MAC72x1 devices have 512K bytes of embedded Flash memory to support software emulation of EEPROM. All FLASH divided into four partitions (Partition0, Partition1, Partition2, Partition3), each partition have two or four FLASH block. Use Options->Environment->Device command to select required FLASH block (blocks).
Partition 2
Address Range Size
Block8 0x00000 - 0x0FFFF 64K bytes
Block9 0x10000 - 0x1FFFF 64K bytes
Partition 0
Address Range Size
Block0 0x20000 - 0x23FFF 16K bytes
Block1 0x24000 - 0x27FFF 16K bytes
Block2 0x28000 - 0x2BFFF 16K bytes
Block3 0x2C000 - 0x2FFFF 16K bytes
Partition 1
Address Range Size
Block4 0x30000 - 0x33FFF 16K bytes
Block5 0x34000 - 0x37FFF 16K bytes
Block6 0x38000 - 0x3BFFF 16K bytes
Block7 0x3C000 - 0x3FFFF 16K bytes
Partition 3
Address Range Size
Block4 0x40000 - 0x5FFFF 128K bytes
Block5 0x60000 - 0x7FFFF 128K bytes
MAC7242 FLASH
MAC7242 device have 256K bytes of embedded Flash memory, as well as additional memory blocks (4 x 16K bytes) to support software emulation of EEPROM. All FLASH divided into three partitions (Partition0, Partition1, Partition2), each partition have two FLASH block. Partition1 and Partition2 frequently used for EEPROM emulation. XPROG-box software note: use Options->Environment->Device command to select required FLASH block (blocks).
Partition0
Address Range Size
Block0 0x00000-0x1FFFF 128K bytes
Block1 0x20000-0x3F000 128K bytes
Partition1
Address Range Size
Block0 0x40000-0x43FFF 16K bytes
Block1 0x44000-0x47FFF 16K bytes
Partition2
Address Range Size
Block0 0x48000-0x4BFFF 16K bytes
Block1 0x4C000-0x4FFFF 16K bytes
MAC7241, MAC7242 Shadow block
The Shadow Block (32K bytes) often uses for bootloader code and includes several locations which hold information on the state of the Flash main array and Shadow Block protection, access and security.
security byte address: 0x7DE3
unsecured state: 0x7DE3 = 0xFE (xxxx xx10)
