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M25PX16-VMN6TP Datasheet(PDF) 25 Page - Numonyx B.V |
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M25PX16-VMN6TP Datasheet(HTML) 25 Page - Numonyx B.V |
25 / 65 page M25PX16 Instructions 25/65 See Section 12: Ordering information on page 62 for CFD programmed devices. Any Read Identification (RDID) instruction while an Erase or Program cycle is in progress, is not decoded, and has no effect on the cycle that is in progress. The Read Identification (RDID) instruction should not be issued while the device is in Deep Power-down mode. The device is first selected by driving Chip Select (S) Low. Then, the 8-bit instruction code for the instruction is shifted in. After this, the 24-bit device identification, stored in the memory, the 8-bit CFD length followed by 16 bytes of CFD content will be shifted out on Serial Data output (DQ1). Each bit is shifted out during the falling edge of Serial Clock (C). The instruction sequence is shown in Figure 10. The Read Identification (RDID) instruction is terminated by driving Chip Select (S) High at any time during data output. When Chip Select (S) is driven High, the device is put in the Standby Power mode. Once in the Standby Power mode, the device waits to be selected, so that it can receive, decode and execute instructions. Figure 10. Read Identification (RDID) instruction sequence and data-out sequence 6.4 Read Status Register (RDSR) The Read Status Register (RDSR) instruction allows the Status Register to be read. The Status Register may be read at any time, even while a Program, Erase or Write Status Register cycle is in progress. When one of these cycles is in progress, it is recommended to check the Write In Progress (WIP) bit before sending a new instruction to the device. It is also possible to read the Status Register continuously, as shown in Figure 11. Table 6. Read Identification (RDID) data-out sequence Manufacturer identification Device identification UID Memory type Memory capacity CFD length CFD content 20h 71h 15h 10h 16 bytes C DQ0 S 2 13 456789 10 11 12 13 14 15 Instruction 0 AI06809d DQ1 Manufacturer identification High Impedance MSB Device identification MSB 15 14 13 3 2 1 0 16 17 18 28 29 30 31 MSB UID |
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