전자부품 데이터시트 검색엔진 |
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ST2202 데이터시트(PDF) 8 Page - List of Unclassifed Manufacturers |
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ST2202 데이터시트(HTML) 8 Page - List of Unclassifed Manufacturers |
8 / 65 page Sitronix ST2202 Ver 2.0a 8/65 2003-May-05 7 7.. M ME EM MO OR RY Y C CO ON NF FIIG GU UR RA AT TIIO ON N 7.1 Memory map The logical memory space of ST2202 is divided into 3 parts: $0000~$0FFF (4K), $4000~$7FFF (16K), and $8000~FFFF (32K). First is for control registers, stack and system memory. Second and third are banked areas. Logical address in these two areas combines two bank registers, PRR and DRR respectively, and then be mapped to a physical address. PRR is the Program ROM Bank Register and is 12-bit long, while DRR is the Data ROM Bank Register of the length of 11 bits. Both can refer to a maximum space of 64M bytes. Only 44M (28M when CSM0=”0”) bytes is addressable by chip selects. Refer to FIGURE 7-1 for memory mapping of ST2202. . Control Register Zero Page User Memory 0000 007F 0080 00FF User Memory / Display Memory 0100 0200 01FF 3FFF 4000 Program Memory (PRR) 16K bytes 7FFF 8000 Data Memory (DRR) 32K bytes FFFF 0000000~ 0003FFF 0004000~ 0007FFF DRR = 000H PRR = 001H PRR = 000H 0008000~ 000BFFF 000C000~ 000FFFF DRR = 001H PRR = 003H PRR = 002H 3FF0000~ 3FF3FFF 3FF4000~ 3FF7FFF DRR = 7FEH PRR = FFDH PRR = FFCH 3FF8000~ 3FFBFFF 3FFC000~ 3FFFFFF DRR = 7FFH PRR = FFFH PRR = FFEH Interrupt Vector 7FE2 CPU Memory Mapping Physical Memory Mapping 64M Bytes Stack Reserved 0FFF 1000 FIGURE 7-1 Memory Mapping |
유사한 부품 번호 - ST2202 |
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유사한 설명 - ST2202 |
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