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SM59264IHHK Scheda tecnica(PDF) 8 Page - SyncMOS Technologies,Inc |
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SM59264IHHK Scheda tecnica(HTML) 8 Page - SyncMOS Technologies,Inc |
8 / 32 page May 2002 Specifications subject to change without notice,contact your sales representatives for the most recent information. 8/32 Ver 1.0 PID 59264 05/02 SyncMOS Technologies Inc. SM59264 1.2.1 Data Memory - Lower 128 byte ($00 to $7F, Bank 0 & Bank 1) 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. 1.2.2 Data Memory - Higher 128 byte ($80 to $FF, Bank 2 & Bank 3) 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. 1.2.3 Data Memory - Expanded 768 bytes ($0000 to $02FF, Bank 4 ~ Bank 15) 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 (by instruction MOVX) or by bank mapping direct addressing mode as described below: 1.3 Bank mapping direct addressing mode : We provide RAM bank address ‘40H~7FH’ as mapping window which allow user access all the 1K on-chip RAM through this RAM bank address. FF Higher 128 bytes Lower 128 bytes SFR 80 7F 00 00 FF 0000 FFFF 02FF 02FF 0000 On-chip Expanded 768 byte RAM (OME=1) 64K bytes addressing space Note: External RAM address structure for reading the on-chip data flash. On-chip data flash as External RAM (OME=0) On-chip data flash as External RAM (Can be read by MOVX instruction) (Can be read by MOVX instruction) DFEN = 1 (DFEN = 1) internal RAM internal data flash |
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