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W25Q16JVSSIQ Datasheet(PDF) 46 Page - Winbond |
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W25Q16JVSSIQ Datasheet(HTML) 46 Page - Winbond |
46 / 75 page W25Q16JV - 45 - Read Manufacturer / Device ID Quad I/O (94h) The Read Manufacturer / Device ID Quad I/O instruction is an alternative to the Read Manufacturer / Device ID instruction that provides both the JEDEC assigned manufacturer ID and the specific device ID at 4x speed. The Read Manufacturer / Device ID Quad I/O instruction is similar to the Fast Read Quad I/O instruction. The instruction is initiated by driv ing the /CS pin low and shifting the instruction code “94h” followed by a four clock dummy cycles and then a 24-bit address (A23-A0) of 000000h, but with the capability to input the Address bits four bits per clock. After which, the Manufacturer ID for Winbond (EFh) and the Device ID are shifted out four bits per clock on the falling edge of CLK with most significant bit (MSB) first as shown in Figure 41. The Manufacturer and Device IDs can be read continuously, alternating from one to the other. The instruction is completed by driving /CS high. Figure 41. Read Manufacturer / Device ID Quad I/O Instruction Note: The “Continuous Read Mode” bits M(7-0) must be set to Fxh to be compatible with Fast Read Quad I/O instruction. Mode 0 Mode 3 0 1 2 3 4 5 6 7 Instruction (94h) High Impedance 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 5 1 4 0 23 Mode 0 Mode 3 IOs switch from Input to Output High Impedance 7 3 6 2 /CS CLK IO 0 IO 1 IO 2 IO 3 High Impedance A23-16 A15-8 A7-0 (00h) M7-0 MFR ID Device ID Dummy Dummy /CS CLK IO 0 IO 1 IO 2 IO 3 23 0 1 2 3 5 1 4 0 7 3 6 2 5 1 4 0 7 3 6 2 5 1 4 0 7 3 6 2 5 1 4 0 7 3 6 2 5 1 4 0 7 3 6 2 5 1 4 0 7 3 6 2 5 1 4 0 7 3 6 2 5 1 4 0 7 3 6 2 5 1 4 0 7 3 6 2 24 25 26 27 28 29 30 MFR ID (repeat) Device ID (repeat) MFR ID (repeat) Device ID (repeat) |
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