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W25Q16DVSNIG Datasheet(PDF) 53 Page - Winbond |
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W25Q16DVSNIG Datasheet(HTML) 53 Page - Winbond |
53 / 81 page W25Q16DV Publication Release Date: October 29, 2012 - 53 - Revision D 7.2.32 Read Manufacturer / Device ID Dual I/O (92h) The Manufacturer / Device ID Dual 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 2x speed. The Read Manufacturer / Device ID Dual I/O instruction is similar to the Fast Read Dual I/O instruction. The instruction is initiated by driving the /CS pin low and shifting the instruction code “92h” followed by a 24-bit address (A23-A0) of 000000h, 8-bit Continuous Read Mode Bits, with the capability to input the Address bits two bits per clock. After which, the Manufacturer ID for Winbond (EFh) and the Device ID are shifted out 2 bits per clock on the falling edge of CLK with most significant bits (MSB) first as shown in Figure 30. The Device ID values for the W25Q16DV is listed in Manufacturer and Device Identification table. If the 24-bit address is initially set to 000001h the Device ID will be read first and then followed by the Manufacturer ID. The Manufacturer and Device IDs can be read continuously, alternating from one to the other. The instruction is completed by driving /CS high. /CS CLK DI (IO 0) DO (IO 1) Mode 0 Mode 3 0 1 2 3 4 5 6 7 Instruction (92h) High Impedance 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 7 5 3 1 ** 6 4 2 0 7 5 3 1 6 4 2 0 7 5 3 1 6 4 2 0 7 5 3 1 6 4 2 0 23 ** A23-16 A15-8 A7-0 (00h) M7-0 /CS CLK DI (IO 0) DO (IO 1) 24 25 26 27 28 29 30 31 32 33 34 36 37 38 35 23 0 Mode 0 Mode 3 7 5 3 1 6 4 2 0 7 5 3 1 6 4 2 0 7 5 3 1 6 4 2 0 7 5 3 6 4 2 1 0 1 MFR ID Device ID MFR ID (repeat) Device ID (repeat) IOs switch from Input to Output ** ** = MSB * Figure 30. Read Manufacturer / Device ID Dual I/O Diagram Note: The “Continuous Read Mode” bits M7-0 must be set to Fxh to be compatible with Fast Read Dual I/O instruction. |
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