SST26WF040BA datasheet(24/96 Pages) MICROCHIP

24 / 96 page

SST26WF040B/040BA SST26WF080B/080BA

DS20005283C-page 24

 2014-2017 Microchip Technology Inc.

5.14

JEDEC-ID Read (SPI Protocol)

Using traditional SPI protocol, the JEDEC-ID Read

instruction identifies the device as SST26WF040B/

040BA and SST26WF080B/080BA and the manufac-

turer as Microchip. To execute a JECEC-ID operation

the host drives CE# low then sends the JEDEC-ID

command cycle (9FH).

Immediately

following

the

command

cycle,

SST26WF040B/040BA and SST26WF080B/080BA

outputs data on the falling edge of the SCK signal. The

data output stream is continuous until terminated by a

low-to-high transition on CE#. The device outputs three

bytes of data: manufacturer, device type, and device

ID, see Table 5-4. See Figure 5-16 for instruction

sequence.

FIGURE 5-16:

JEDEC-ID SEQUENCE (SPI MODE)

5.15

Read Quad J-ID Read (SQI

Protocol)

The Read Quad J-ID Read instruction identifies the

device as SST26WF040B/040BA and SST26WF080B/

080BA and manufacturer as Microchip. To execute a

Quad J-ID operation the host drives CE# low and then

sends the Quad J-ID command cycle (AFH). Each

cycle is two nibbles (clocks) long, most significant nib-

ble first.

Immediately following the command cycle, and one

dummy

cycle,

SST26WF040B/040BA

and

SST26WF080B/080BA outputs data on the falling edge

of the SCK signal. The data output stream is continu-

ous until terminated by a low-to-high transition of CE#.

The device outputs three bytes of data: manufacturer,

device type, and device ID, see Table 5-4. See Figure

5-17 for instruction sequence.

FIGURE 5-17:

QUAD J-ID READ SEQUENCE

TABLE 5-4:

DEVICE ID DATA OUTPUT

Product

Manufacturer ID (Byte 1)

Device ID

Device Type (Byte 2)

Device ID (Byte 3)

SST26WF040B and

SST26WF080B

BFH

26H

58H (SST26WF080B)

54H (SST26WF040B)

Device ID

20005283 F38.0

CE#

SCK

012345678

HIGH IMPEDANCE

15 16

28 29 30 31

MODE 3

MODE 0

MSB

9 10111213

1718

19 20 21 22 23

24 25 26 27

BFH

Device ID

Dummy

BFH

MSN

LSN

26H

20005283 F55.0

SCK

SIO(3:0)

CE#

913

MODE 3

MODE 0

Note:

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