AT25QL641 datasheet(35/77 Pages) DIALOG

부품명	AT25QL641

상세설명	64-Mbit, 1.7V Minimum SPI Serial Flash Memory with Dual I/O, Quad I/O and QPI Support

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AT25QL641

DS-25QL641–130E–10/2018

Figure 7-27. Block Erase Instruction (QPI Mode)

7.18

32 Kbyte Block Erase (52h)

The 32 KB ‘Block Erase’ instruction is used for a 32 Kbyte block erase operation. Prior to the ‘Block Erase’ Instruction,

a ‘Write Enable’ (06h) instruction must be issued. The instruction is initiated by driving the CS pin low and shifting the

instruction code “52h” followed a 24-bit block address (A23-A0). Refer to Figure 7-28 and Figure 7-29 below. The CS

pin must go high after the eighth bit of the last byte has been latched in, otherwise the Block Erase instruction is not

executed. After CS is driven high, the self-timed Block Erase instruction commences for a time duration of tBE1 (see Table

8-7, AC Electrical Characteristics

While the block erase operation is in progress, the ‘Read Status Register’ (05h) instruction may still be used to read the

status of the BUSY bit. The BUSY bit is a 1 during the block erase operation and becomes a 0 when the cycle is

finished and the device is ready to accept other instructions again. When the BUSY bit is asserted, the Write Enable

Latch (WEL) bit in the Status Register is cleared to 0.

Figure 7-28. 32KB Block Erase Instruction (SPI Mode)

AT25QL641 데이터시트(PDF) 35 Page - Dialog Semiconductor