Datasheet
137
4235Kâ8051â05/08
AT89C51RD2/ED2
24.3 Flash Registers and Memory Map ...................................................................94
24.4 Flash Memory Status....................................................................................... 97
24.5 Memory Organization ......................................................................................97
24.6 Bootloader Architecture ...................................................................................97
24.7 ISP Protocol Description ................................................................................102
24.8 Functional Description ...................................................................................103
24.9 Flow Description ............................................................................................104
24.10 API Call Description .......................................................................................112
25 Electrical Characteristics .................................................................... 114
25.1 Absolute Maximum Ratings ...........................................................................114
25.2 DC Parameters for Standard Voltage ............................................................114
25.3 AC Parameters ..............................................................................................117
26 Ordering Information ........................................................................... 126
27 Packaging Information ........................................................................ 127
27.1 PLCC44 .........................................................................................................127
27.2 VQFP44 .........................................................................................................129
27.3 PLCC68 .........................................................................................................131
27.4 VQFP64 .........................................................................................................132
28 Document Revision History ................................................................ 133
28.1 Changes from 4235A -04/03 to 4135B - 06/03 ..............................................133
28.2 Changes from 4235B -06/03 to 4235C - 08/03 ..............................................133
28.3 Changes from 4235C - 08/03 to 4235D - 12/03 ............................................133
28.4 Changes from 4235D - 12/03 to 4235E - 04/04 .............................................133
28.5 Changes from 4235E - 04/04 to 4235F - 09/04 .............................................133
28.6 Changes from 4235F - 09/04 to 4235G 08/05 ...............................................133
28.7 Changes from 4235G 08/05 to 4235H - 10/06 ..............................................133
28.8 Changes from 4235H - 10/06 to 4235I - 04/07 ..............................................133
28.9 Changes from 4235I - 04/07 to 4235J - 01/08 ...............................................133
28.10 Changes from 4235J - 01/08 to 4235K - 05/08 .............................................133