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CHAPTER 8 RESETS AND STARTUP
The Internal Vector mode is available for all MCU types and the fixed Boot Vector is given by DF0080
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Serial Communication mode (MD[2:0]="010")
This mode allows the reading and writing of any memory address by serial communicated read/write
commands. Programming of the internal Flash is possible by executing tiny program in RAM.
Despite of dedicated read/write commands, the internal RAM area 0x7C00 to 0x7FFF might also be changed
by other commands (e.g. CRC check).
If the ROM/Flash security feature is activated, then reading, writing and programming is only possible after
transmitting the correct security key.
See CHAPTER 33 "FLASH MEMORY" and CHAPTER 35 "ROM/FLASH SECURITY" for more details.
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Parallel Flash programming mode (MD[2:0]="111")
This mode allows the programming of the internal Flash on a parallel Flash programmer. This mode is
available only for Flash devices.
See CHAPTER 33 "FLASH MEMORY" for more details.
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Test mode (MD[2:0]="100" or "101")
These modes are reserved for test functions.
■ ROM Configuration Block (RCB)
The ROM Configuration Block is a fixed area in Main Flash/ROM and Satellite Flash, which enables the
user to configure the behavior of the Boot ROM. User program should not allocate it for program except for
specified configuration data.
The Main ROM Configuration Block (MRCB) is located at the start of Main ROM. The Satellite ROM
Configuration Block (SRCB) is located at the start of Satellite Flash, if present. They are read and processed
by Boot ROM. Its content can be set and changed by any method, which writes or erases Flash memory.
MRCB and SRCB configure the security setting of belonging ROM. In addition, the MRCB also configures
the boot sequence and background debug mode.
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MB96300 Super Series Hardware Manual
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