IS25LP256D-RHLA3-TR datasheet(103/179 Pages) ISSI

103 / 179 page

IS25LP256D

IS25WP256D

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

103

Rev A15

08/05/2024

8.27 SET EXTENDED READ PARAMETERS OPERATION (SERPNV: 85h, SERPV: 83h)

Set Read Operational Driver Strength

This device supports configurable Operational Driver Strength in both SPI and QPI modes by setting three bits

(ODS0, ODS1, ODS2) within the Extended Read Register. To set the ODS bits the SERPNV and SERPV operation

instructions are required. The device’s driver strength can be reduced as low as 12.50% of full drive strength.

Details regarding the driver strength can be found in Table 6.14.

SERPNV is used to set the non-volatile Extended Read register, while SERPV is used to set the volatile Extended

Read register.

Notes:

1. The default driver strength is set to 50%.

2. When SERPNV is executed, the volatile Read Extended Register is set as well as the non-volatile Read Extended

Figure 8.61 Set Extended Read Parameters Sequence In SPI Mode

Instruction = 85h/83h

CE #

SCK

Data In

Mode 3

Mode 0

High Impedence

Figure 8.62 Set Extended Read Parameters Sequence In QPI Mode

85h/83h

Mode 3

Mode 0

7:4

3:0

CE#

SCK

IO[3:0]

Data In

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