IS25LP064A-RHLA3 datasheet(62/99 Pages) ISSI

62 / 99 page

IS25LP064A/032A

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

Rev. A

11/06/2015

8.27 READ DEVICE MANUFACTURER AND DEVICE ID OPERATION (RDMDID, 90h)

The Read Device Manufacturer and Device ID (RDMDID) instruction allows the user to read the Manufacturer

and product ID of devices. Refer to Table 8.4 Product Identification for Manufacturer ID and Device ID. The

RDMDID instruction code is followed by two dummy bytes and one byte address (A7~A0), each bit being

latched-in on SI during the rising edge of SCK. If one byte address is initially set as A0 = 0, then the

Manufacturer ID is shifted out on SO with the MSB first followed by the Device ID (ID7- ID0). Each bit is shifted

out during the falling edge of SCK. If one byte address is initially set as A0 = 1, then Device ID will be read first

followed by the Manufacturer ID. The Manufacturer and Device ID can be read continuously alternating between

the two until CE# is driven high.

Figure 8.46 Read Product Identification by RDMDID Read Sequence

Instruction = 90h

Manufacturer ID

(MF7-MF0)

CE #

SCK

Device ID

(ID7-ID0)

...

Mode 3

Mode 0

3-byte Address

Notes:

1. ADDRESS A0 = 0, will output the 1-byte Manufacturer ID (MF7-MF0)

 1-byte Device ID (ID7-ID0)

ADDRESS A0 = 1, will output the 1-byte Device ID (ID7-ID0)

 1-byte Manufacturer ID (MF7-MF0)

2. The Manufacturer and Device ID can be read continuously and will alternate from one to the other until CE# pin is pulled high.

Figure 8.47 Read Product Identification by RDMDID QPI Read Sequence

90h

CE#

SCK

IO[3:0]

3-byte Address

Mode 3

Mode 0

23:20

7:4

3:0

7:4

3:0

19:16 15:12 11:8

7:4

3:0

Instruction

Manufacturer

ID (MF7-MF0)

Device ID

(ID7-ID0)

Notes:

1. ADDRESS A0 = 0, will output the 1-byte Manufacturer ID (MF7-MF0)

 1-byte Device ID (ID7-ID0)

ADDRESS A0 = 1, will output the 1-byte Device ID (ID7-ID0)

 1-byte Manufacturer ID (MF7-MF0)

2. The Manufacturer and Device ID can be read continuously and will alternate from one to the other until CE# pin is pulled high.

IS25LP064A-RHLA3 Datasheet(PDF) 62 Page - Integrated Silicon Solution, Inc

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