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M59MR032CGC Datasheet(PDF) 24 Page - STMicroelectronics |
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M59MR032CGC Datasheet(HTML) 24 Page - STMicroelectronics |
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24 / 49 page  M59MR032C, M59MR032D 24/49 Table 22. Device Geometry Definition Offset Word Mode Data Description 27h 0016h Device Size = 2n in number of bytes 28h 0001h Flash Device Interface Code description: Asynchronous x16 29h 0000h 2Ah 0000h Maximum number of bytes in multi-byte program or page = 2n 2Bh 0000h 2Ch 0003h Number of Erase Block Regions within device bit 7 to 0 = x = number of Erase Block Regions Note:1. x = 0 means no erase blocking, i.e. the device erases at once in "bulk." 2. x specifies the number of regions within the device containing one or more contiguous Erase Blocks of the same size. For example, a 128KB device (1Mb) having blocking of 16KB, 8KB, four 2KB, two 16KB, and one 64KB is considered to have 5 Erase Block Regions. Even though two regions both contain 16KB blocks, the fact that they are not contiguous means they are sep- arate Erase Block Regions. 3. By definition, symmetrically block devices have only one blocking region. M59MR032C M59MR032C Erase Block Region Information bit 31 to 16 = z, where the Erase Block(s) within this Region are (z) times 256 bytes in size. The value z = 0 is used for 128 byte block size. e.g. for 64KB block size, z = 0100h = 256 => 256 * 256 = 64K bit 15 to 0 = y, where y+1 = Number of Erase Blocks of identical size within the Erase Block Region: e.g. y = D15-D0 = FFFFh => y+1 = 64K blocks [maximum number] y = 0 means no blocking (# blocks = y+1 = "1 block") Note: y = 0 value must be used with number of block regions of one as indicated by (x) = 0 2Dh 002Fh 2Eh 0000h 2Fh 0000h 30h 0001h 31h 000Eh 32h 0000h 33h 0000h 34h 0001h 35h 0007h 36h 0000h 37h 0020h 38h 0000h M59MR032D M59MR032D 2Dh 0007h 2Eh 0000h 2Fh 0020h 30h 0000h 31h 000Eh 32h 0000h 33h 0000h 34h 0001h 35h 002Fh 36h 0000h 37h 0000h 38h 0001h |
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