IS25LP064A-RGLA3 datasheet(61/99 Pages) ISSI

61 / 99 page

IS25LP064A/032A

Integrated Silicon Solution, Inc.- www.issi.com

Rev. A

11/06/2015

8.26 READ PRODUCT IDENTIFICATION BY JEDEC ID OPERATION (RDJDID, 9Fh; RDJDIDQ, AFh)

The JEDEC ID READ instruction allows the user to read the manufacturer and product ID of devices. Refer to

Table 8.5 Product Identification for Manufacturer ID and Device ID. After the JEDEC ID READ command (9Fh in

SPI mode and QPI mode, AFh in QPI mode) is input, the Manufacturer ID is shifted out MSB first followed by

the 2-byte electronic ID (ID15-ID0) that indicates Memory Type and Capacity, one bit at a time. Each bit is

shifted out during the falling edge of SCK. If CE# stays low after the last bit of the 2-byte electronic ID, the

Manufacturer ID and 2-byte electronic ID will loop until CE# is pulled high.

and 2-byte electronic ID will loop until CE# is pulled high.

Figure 8.44 RDJDID (Read JEDEC ID in SPI Mode) Sequence

Instruction = 9Fh

Memory Type

(ID15-ID8)

CE #

SCK

Capacity

(ID7-ID0)

...

Mode 3

Mode 0

Manufacturer ID

(MF7-MF0)

Figure 8.45 RDJDID and RDJDIDQ (Read JEDEC ID) Sequence in QPI Mode

9Fh/AFh

CE#

SCK

IO[3:0]

Mode 3

Mode 0

7:4

3:0

7:4

3:0

7:4

3:0

MF7-MF0

ID15-ID8

ID7-ID0

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