IS25LQ040(2012) Ver la hoja de datos (PDF) - Integrated Silicon Solution

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Fabricante

IS25LQ040
(Rev.:2012)

4 Mbit Single Operating Voltage Serial Flash Memory With 104 MHz Dual- or 100MHz Quad-Output SPI Bus Interface

Integrated Silicon Solution 

IS25LQ040

DEVICE OPERATION (CONTINUED)

RDMDID COMMAND (READ DEVICE MANUFACTURER AND DEVICE ID)

OPERATION

The Read Product Identification (RDID) instruction

the MSB first, the device ID1 and the second

allows the user to read the manufacturer and product manufacturer ID (7Fh), each bit been shifted out during

ID of the devices. Refer to Table 12 Product

the falling edge of SCK. If one byte address is initially

Identification for pFLASH™ manufacturer ID and

set to A0 = 1, then device ID1 will be read first, then

device ID. The RDID instruction code is followed by followed by the first manufacture ID (9Dh) and then

two dummy bytes and one byte address (A7~A0), each second manufacture ID (7Fh). The manufacture and

bit being latched-in on SI during the rising edge of SCK. device ID can be read continuously, alternating from

If one byte address is initially set to A0 = 0, then the one to the others. The instruction is completed by

first manufacturer ID (9Dh) is shifted out on SO with driving CE# high.

Figure 5. Read Product Identification by RDMDID READ Sequence

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

Rev. A

13

09/13/2012

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