IS25LP064A-RBLA2 datasheet(59/99 Pages) ISSI

59 / 99 page

IS25LP064A/032A

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

Rev. A

11/06/2015

8.25 READ PRODUCT IDENTIFICATION (RDID, ABh)

The Release from Power-down/Read Device ID instruction is a multi-purpose instruction. It can support both SPI

and QPI modes. The Read Product Identification (RDID) instruction is for reading out the old style of 8-bit

Electronic Signature, whose values are shown as table of Product Identification.

The RDID instruction code is followed by three dummy bytes, each bit being latched-in on SI during the rising

SCK edge. Then the Device ID is shifted out on SO with the MSB first, each bit been shifted out during the

falling edge of SCK. The RDID instruction is ended by driving CE# high. The Device ID (ID7-ID0) outputs

repeatedly if additional clock cycles are continuously sent to SCK while CE# is at low.

Table 8.5 Product Identification

Manufacturer ID

(MF7-MF0)

ISSI Serial Flash

9Dh

Instruction

ABh

90h

9Fh

Device Density

Device ID (ID7-ID0)

Memory Type + Capacity

(ID15-ID0)

32Mb

15h

6016h

64Mb

16h

6017h

Figure 8.42 Read Product Identification Sequence

Device ID

(ID7-ID0)

Data Out

...

Instruction = ABh

CE #

SCK

...

Mode 3

Mode 0

3 Dummy Bytes

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