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SM89516 데이터시트(PDF) 6 Page - SyncMOS Technologies,Inc |
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SM89516 데이터시트(HTML) 6 Page - SyncMOS Technologies,Inc |
6 / 19 page SyncMOS Technologies International, Inc. SM89516 8-Bits Micro-controller With 64KB flash & 1KB RAM embedded Specifications subject to change without notice contact your sales representatives for the most recent information. Ver 2.1 SM89516 08/2006 6 1.2 Data Memory The SM89516 has 1K bytes on-chip RAM, 256 bytes of it are the same as general 8052 internal memory structure while the expanded 768 bytes on-chip RAM can be accessed by external memory addressing method (by instruction MOVX). Data Memory - Lower 128 byte Data memory $00 to $FF is the same as 8052 The address $00 to $7F can be accessed by direct and indirect addressing modes. Address $00 to $1F is register area. Address $20 to $2F is memory bit area. Address $30 to $7F is for general memory area. Data memory - Higher 128 byte The address $80 to $FF can be accessed by indirect addressing mode only. Addressing $80 to $FF is data area. Data Memory - Expanded 768 bytes From external address $0000 to $02FF is the on-chip expanded RAM area, total 768 bytes. This area can be accessed by external direct addressing mode only (by instruction MOVX). |
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