AT89C5115
XROW Bytes
The EXTRA ROW (XROW) includes 128 bytes. Some of these bytes are used for spe-
cific purpose in conjonction with the bootloader.
Table 30. XROW Mapping
Description
Default Value
Address
30h
Copy of the Manufacturer Code
58h
D7h
BBh
FFh
Copy of the Device ID#1: Family code
Copy of the Device ID#2: Memories size and type
Copy of the Device ID#3: Name and Revision
31h
60h
61h
Hardware Conditions
It is possible to force the controller to execute the bootloader after a Reset with hard-
ware conditions.
During the first programming, the user can define a configuration on Port1 that will be
recognized by the chip as the hardware conditions during a Reset. If this condition is
met, the chip will start executing the bootloader at the end of the Reset.
See a detailed description in the applicable Document.
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Datasheet Bootloader UART T89C5115.
47
4128F–8051–05/06
ATMEL [ ATMEL ]
