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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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M25P64-VMF6TP Arkusz danych(PDF) 14 Page - STMicroelectronics |
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M25P64-VMF6TP Arkusz danych(HTML) 14 Page - STMicroelectronics |
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14 / 38 page  M25P64 14/38 INSTRUCTIONS All instructions, addresses and data are shifted in and out of the device, most significant bit first. Serial Data Input (D) is sampled on the first rising edge of Serial Clock (C) after Chip Select (S) is driven Low. Then, the one-byte instruction code must be shifted in to the device, most significant bit first, on Serial Data Input (D), each bit being latched on the rising edges of Serial Clock (C). The instruction set is listed in Table 4.. Every instruction sequence starts with a one-byte instruction code. Depending on the instruction, this might be followed by address bytes, or by data bytes, or by both or none. In the case of a Read Data Bytes (READ), Read Data Bytes at Higher Speed (Fast_Read), Read Status Register (RDSR), Read Identification (RDID) or Read Electronic Signature (RES) in- struction, the shifted-in instruction sequence is fol- lowed by a data-out sequence. Chip Select (S) can be driven High after any bit of the data-out se- quence is being shifted out. In the case of a Page Program (PP), Sector Erase (SE), Bulk Erase (BE), Write Status Register (WRSR), Write Enable (WREN) or Write Disable (WRDI), Chip Select (S) must be driven High ex- actly at a byte boundary, otherwise the instruction is rejected, and is not executed. That is, Chip Se- lect (S) must driven High when the number of clock pulses after Chip Select (S) being driven Low is an exact multiple of eight. All attempts to access the memory array during a Write Status Register cycle, Program cycle or Erase cycle are ignored, and the internal Write Status Register cycle, Program cycle or Erase cy- cle continues unaffected. Table 4. Instruction Set Instruction Description One-byte Instruction Code Address Bytes Dummy Bytes Data Bytes WREN Write Enable 0000 0110 06h 0 0 0 WRDI Write Disable 0000 0100 04h 0 0 0 RDID Read Identification 1001 1111 9Fh 0 0 1 to 3 RDSR Read Status Register 0000 0101 05h 0 0 1 to ∞ WRSR Write Status Register 0000 0001 01h 0 0 1 READ Read Data Bytes 0000 0011 03h 3 0 1 to ∞ FAST_READ Read Data Bytes at Higher Speed 0000 1011 0Bh 3 1 1 to ∞ PP Page Program 0000 0010 02h 3 0 1 to 256 SE Sector Erase 1101 1000 D8h 3 0 0 BE Bulk Erase 1100 0111 C7h 0 0 0 RES Read Electronic Signature 1010 1011 ABh 0 3 1 to ∞ |
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