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PSD4235G2 データシート(PDF) 33 Page - STMicroelectronics |
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PSD4235G2 データシート(HTML) 33 Page - STMicroelectronics |
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33 / 93 page  PSD4000 Series Preliminary Information 30 The PSD4000 Functional Blocks (cont.) 9.1.5 Memory ID Registers The 8-bit read only memory status registers are included in the CSIOP space. The user can determine the memory configuration of the PSD device by reading the Memory ID0 and Memory ID1 registers. The content of the registers are defined as follow: Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 S_size 3 S_size 2 S_size 1 S_size 0 F_size 3 F_size 2 F_size 1 F_size 0 Memory_ID0 Register Main Flash Size F_size3 F_size2 F_size1 F_size0 (Bit) 0 0 0 0 none 0 0 0 1 256K 0 0 1 0 512K 0 011 1M 0 100 2M 0 101 4M 0 110 8M Bit Definition SRAM Size S_size3 S_size2 S_size1 S_size0 (Bit) 0 0 0 0 none 0 001 16K 0 010 32K 0 011 64K Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 ** B_type 1 B_type 0 B_size 3 B_size 2 B_size 1 B_size 0 Memory_ID1 Register *Not used bit should be set to zero. Boot Block Size B_size3 B_size2 B_size1 B_size0 (Bit) 0 0 0 0 none 0 0 0 1 128K 0 0 1 0 256K 0 0 1 1 512K Bit Definition B_type1 B_type0 Boot Block Type 0 0 Flash 0 1 EEPROM |
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