SST26WF040BA datasheet(41/96 Pages) MICROCHIP

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 2014-2017 Microchip Technology Inc.

DS20005283C-page 41

SST26WF040B/040BA SST26WF080B/080BA

5.39

Release from Deep Power-Down

and Read ID

Release from Deep Power-Down (RDPD) and Read ID

instruction exits Deep Power-down mode. To exit Deep

Power down mode, execute the RDPD. During this

command, the host drives CE# low, then sends the

Deep Power-Down command cycle (ABH), and then

drives CE# high. The device will return to Standby

mode and be ready for the next instruction after TSBR.

To execute RDPD and read the Device ID, the host

drives CE# low then sends the Deep Power-Down

command cycle (ABH), three dummy clock cycles, and

then drives CE# high. The device outputs the Device ID

on the falling edge of the SCK signal following the

dummy cycles. The data output stream is continuous

until terminated by a low-to-high transition on CE, and

will return to Standby mode and be ready for the next

instruction after TSBR. See Figures 5-48 and 5-49 for

the command sequence.

FIGURE 5-48:

RELEASE FROM DEEP POWER-DOWN (RDPD) AND READ ID SEQUENCE (SQI)

FIGURE 5-49:

RELEASE FROM DEEP POWER-DOWN (RDPD) AND READ ID SEQUENCE (SPI)

20005283 F102.0

MODE 3

SCK

SIO[3:0]

CE#

MODE 0

D1 D0

TSBR

Standby Mode

Deep Power-Down Mode

Op Code

MSN

LSN

Device ID

Note: C[1:0]=A

20005283 F103.0

MODE 3

SCK

SIO[3:0]

CE#

MODE 0

TSBR

Standby Mode

Deep Power-Down Mode

Op Code

Device ID

15 16

23 24

32 33

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