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SM59128 Scheda tecnica(PDF) 10 Page - SyncMOS Technologies,Inc |
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SM59128 Scheda tecnica(HTML) 10 Page - SyncMOS Technologies,Inc |
10 / 32 page SyncMOS Technologies International, Inc. SM59128 8-Bits Micro-controller Embedded 128KB flash & 1KB RAM & IIC & SPWM Specifications subject to change without notice contact your sales representatives for the most recent information. ISSFD-M027Ver: B SM59128 06/2009 10 1.2 Data Memory The SM59128 has 1024 bytes on-chip RAM consists of 256 bytes as same as 8052 internal memory structure and expanded 768 bytes on-chip RAM that can be accessed by external memory addressing method (by instruction MOVX), or by ‘Bank mapping direct addressing mode’. User can use MOVX instruction to access internal RAM or external memory by setting OME. The different setting of OME will map to different memory block. OME address of MOVX below 768 address of MOVX over 768 0 external memory external memory 1 internal RAM external memory 1.2.1 Data Memory - Lower 128 byte ($00 to $7F) Data Memory $00 to $FF follow 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 general memory area. 1.2.2 Data Memory - Higher 128 byte ($80 to $FF) The address $80 to $FF can be accessed by indirect addressing mode or by bank mapping direct addressing mode. Address $80 to $FF is data area. |
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