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S25FL256SDPNFAQ Arkusz danych(PDF) 86 Page - Cypress Semiconductor |
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S25FL256SDPNFAQ Arkusz danych(HTML) 86 Page - Cypress Semiconductor |
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86 / 149 page ![]() Document Number: 001-98283 Rev. *M Page 85 of 148 S25FL128S/S25FL256S 9.4.1 Read (Read 03h or 4READ 13h) The instruction 03h (ExtAdd=0) is followed by a 3-byte address (A23-A0) or 03h (ExtAdd=1) is followed by a 4-byte address (A31-A0) or 13h is followed by a 4-byte address (A31-A0) Then the memory contents, at the address given, are shifted out on SO. The maximum operating clock frequency for the READ command is 50 MHz. The address can start at any byte location of the memory array. The address is automatically incremented to the next higher address in sequential order after each byte of data is shifted out. The entire memory can therefore be read out with one single read instruction and address 000000h provided. When the highest address is reached, the address counter will wrap around and roll back to 000000h, allowing the read sequence to be continued indefinitely. Figure 9.6 Read Command Sequence (3-byte Address, 03h [ExtAdd=0]) Figure 9.7 Read Command Sequence (4-byte Address, 13h or 03h [ExtAdd=1]) 1 3 2 10 9 8 7 6 5 4 0 31 30 29 28 Instruction 24-Bit Address 23 21 22 1 3 2 0 1 3 2 0 7 6 5 4 36 35 34 33 32 39 38 37 SCK SI SO High Impedance MSB DATA OUT 1 DATA OUT 2 7 MSB CS# 1 3 2 10 9 8 7 6 5 4 0 39 38 37 36 Instruction 32-Bit Address 31 29 30 1 3 2 0 1 3 2 0 7 6 5 4 44 43 42 41 40 47 46 45 SCK SI SO High Impedance MSB DATA OUT 1 DATA OUT 2 7 MSB CS # |
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