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SST89V52RD2-33-C-QJF2 Datasheet(PDF) 11 Page - Silicon Storage Technology, Inc |
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SST89V52RD2-33-C-QJF2 Datasheet(HTML) 11 Page - Silicon Storage Technology, Inc |
11 / 81 page Data Sheet FlashFlex51 MCU SST89E52RD2/RD / SST89E54RD2/RD / SST89E58RD2/RD SST89V52RD2/RD / SST89V54RD2/RD / SST89V58RD2/RD 11 ©2006 Silicon Storage Technology, Inc. S71255-05-000 5/06 3.0 MEMORY ORGANIZATION The device has separate address spaces for program and data memory. 3.1 Program Flash Memory There are two internal flash memory blocks in the device. The primary flash memory block (Block 0) has 8/16/32 KByte. The secondary flash memory block (Block 1) has 8 KByte. Since the total program address space is limited to 64 KByte, the SFCF[1:0] bit are used to control program bank selection. Please refer to Figures 3-1 through 3-3 for the program memory configuration. Program bank selec- tion is described in the next section. The 8K/16K/32K x8 primary SuperFlash block is organized as 64/128/256 sectors, each sector consists of 128 Bytes. The 8K x8 secondary SuperFlash block is organized as 64 sectors, each sector consists also of 128 Bytes. For both blocks, the 7 least significant program address bits select the byte within the sector. The remainder of the pro- gram address bits select the sector within the block. FIGURE 3-1: Program Memory Organization for 8 KByte SST89x52RDx 1255 F01.1 External 64 KByte EA# = 0 FFFFH 0000H 8 KByte Block 0 EA# = 1 SFCF[1:0] = 10, 11 FFFFH 0000H 8 KByte Block 1 8 KByte Block 1 EA# = 1 SFCF[1:0] = 00 FFFFH 2000H DFFFH E000H DFFFH E000H 1FFFH 2000H 0000H 1FFFH Not Accessible Not Accessible Not Accessible 8 KByte Block 1 EA# = 1 SFCF[1:0] = 01 FFFFH 1FFFH 2000H 0000H 8 KByte Block 0 |
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