?????? ????????? ???????? ?????? ??????? ????? ?????? ????， ????? ATMEL ????? ????? AT91RM9200 ????? ?????????. ??? ARM920T ???? ??????? 32-???? ???????????????. ????????? 200MPS ???? ?????????? ????? ???? ?????? ?????， ?????????????????? ????? ???????? ???????? ?????? ???????? ????? ????? ????? ?????????? ???????????? ????????? ???????. AT91RM9200 ????????? ???-???? ??????? ??????????? ????? Linux ?? ?????? ????????， ??? ? ????????? ???? ?????. ??? ?????? ??????? ????? ?????????????? ?????? ???????， ??????? ?????? ?????????? ??? ????????? ????? ?????? ??????? ????????????? ????????? ???????， ?????? ???????? ????? ?????????????? ?????? ????????? ????? ???????? ????????? ?????? ?????? ???? ??????????? ????????? ????? ????? ??????? ???????????????.

?AT91RM9200 ??????????????? ????????? 180 MHz ??? frequency ?????????? ????? ????.??? ???? ????????， 32-???? ????? ???? ??? 8/16 / 32-???? ???? ????????? ?????? ????????. 26-???? ?????? ????? ????????? 64 MB ????????? ??????????????. ???? ???? ????????? ??????? ?????????? ???-??????? ?????? ??????????， ?????? ????? ???????????? ?????? (MMU)， ?????????? 16 KB SRAM ????? 128 KB ROM， 16 KB ???? ???? ????? 16 KB ????????????? ???? ???????. ???? ????? ??? ????????? ????????? (EBI) SDRAM， ???????? ?????， ??????? ?????? ????? ????????? ?????? ??? ?????? ????????. ??????? ????????? ???????????????， ????? ??????????? ????????????????;_??????? ?????? ??????? ????? ???? ???????????? ????????? (??????);_??????? ????? (?????);_????? ???? ?????? (???????);_???????????? ???????? ????????? (????);_?????? 32-???? PIO ?????????;_20-????? ????????? ???? ????????? (??????);_10/100 ????????-?? ???????? ?????? ?????????;_4 ?????????? ?????????? / ???????????? ??????? ???????????????? (UASRT) ????? JTAG / ICE ?????????????.

??????????， AT91RM9200 ?? 1.8 V ????? 3.3 V ???????? ????? ?????. ??????， ???? ?????? ????????? 3.3 V ???????? ????? ?????. ?????? ??????? ?????? ????????? 5 V ???????? ????? ???? ?????. ??????? ???????? 5 V DC ????????? ???????? ????? ??? ??????????????. ???????? 3.3 V ???????? ??????????， ????? ????????? ???????? ???????? ???? NCP1111ST33T3. ???? ??????? ???????? 5 V， ????????? ???????? 3.3 V， ????? ?????? ????????? ?????? 0.8 A. ?????????， 1.8 V ????? ???????? ???????? ??????????， NCP1ll7STl8T3 ????? ?????????. ???? ??????? ???????? 5 V， ???? ????????? ???????? 1.8 V ????? ???? ?????? ????????? ?????? 0.8 A. 3.3 V ????? 1.8 V NCPlll7 ?????? ????? ????? ????? ????????? ???????????? ???????? ???????， ?????? ???? ?????， ????? ?????????????? ??????? ????????? 10 tlf ????? ?????? ????? ?????? ????? ??????? ??????????? ??????? ?????.

?2， ??????? ????? ????????? ????????

??????? ??????????? ???? ?????? ????? SDRAM ???? ?????? ?????? ????? ???????? ???? ?????. ???? ????????? ??????? ??????????， ??????? ???????， ???? ???????， ????????????， ?????????????? ??????????? ????? ??????? ???????????? ?????? ???????? ???????， ????? ????????????? ?????????????? ????? ????? ???? ???????? ???? ????? ????;_SDRAM ?????? ?????????? ????? ??????????? ????? ??????? ???????????????? ??? ??????? ???????????????? ?????? ??????????????. ??????? ????? ????????????? ???????? ????????????????， ??????? ?????? 8M ???? ?????? ????? 64M SDRAM ?? ?????????????.

??????????? ?????? ???? ??????? ??????????， ????????? ???????， ???? ??????? ????? ?????????? ????? ????????? ?????? ????????????????;_SDRAM ????????? ???????? ????????? ???????， ?????????? ??????? ?????????????? ???? ????????? ????? ?????? ????? ????? ??????????? ???????????? ????? ????????? ????????????. ?????????? ?????? ????? ??????? ????? S29AL016D70TF. ??? 2，097，152 ????? ??????????? 16 Mbit ?????? ?????;_??? 48-???? TSOP ???????? ????? 3.0V ???????? ??????? ?????????????. S29AL016D70TF ????? Hi3510 ???? ????????? ???????? ????? ?????? ?????????? ?????? 3 ?? ?????????. ??????. CE # ???? ????? ???? ??????? ???????. ? ?????? ???? ????????????? ????? ????????? ????????????????， ? ???? EBICSlN # ?? ??????? ?????????;_OE # ???? ????? ????????? ??????? ??????? ????? EBIOEN ?? ??????? ?????????;_RY / BY ????? ???????? ???? ?????? ???? ????????? ????. ??????.