Maxim Integrated MAXQ20-Based Microcontroller Bootloader Command Reference - Manual (Page 12)

MAXQ20-Based Microcontroller Bootloader Command Reference
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Family 9 Commands—Load Fixed Length
Command 90h—Load Code Fixed Length
Byte1 Byte2 Byte3 Byte4 Byte5 Bytex Byte21 Byte22
Input 90h CodeLen AddrL AddrH Data1 Data(x-4) 00h 00h
Output 03Eh
This command loads a block of 16 bytes into the program memory starting at the specified address. The address,
which must be from 0000h–07FFh, is rounded down to the nearest block boundary (multiple of 16) before the
data is loaded. CodeLen is one of the values returned by the Get Supported Commands command.
Command 91h—Load Data Fixed Length
Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7 Byte8 Byte9 Byte10
Input 91h DataLen AddrL AddrH Data1 Data2 Data3 Data4 00h 00h
Output 03Eh
This command is only useful in devices with nonvolatile data memory. This command loads a block of 4 bytes into
data memory starting at the specified address. The address, which must be from 0040h–00BFh, is rounded down
to the nearest block boundary (multiple of 4) before the data is loaded. DataLen is one of the values returned by
the Get Supported Commands command.