GD25LQ80CSFG datasheet(33/68 Pages) GIGADEVICE

33 / 68 page

1.8V Uniform Sector

Dual and Quad Serial Flash

GD25LQ80C

by the 24-bit device identification, stored in the memory. Each bit is shifted out on the falling edge of Serial Clock. The

command sequence is shown in Figure 28. The Read Identification (RDID) command is terminated by driving CS# high at

any time during data output. When CS# is driven high, the device is in the Standby Mode. Once in the Standby Mode, the

device waits to be selected, so that it can receive, decode and execute commands.

Figure28. Read Identification ID Sequence Diagram

7.26 Program/Erase Suspend (PES) (75H)

The Program/Erase Suspend command

“75H”, allows the system to interrupt a page program or sector/block erase

operation and then read data from any other sector or block. The Write Status Register command (01H) and Erase/Program

Security Registers command (44H,42H) and Erase commands (20H, 52H, D8H, C7H, 60H) and Page Program command

(02H/32H) are not allowed during Program suspend. The Write Status Register command (01H) and Erase Security

Registers command (44H) and Erase commands (20H, 52H, D8H, C7H, 60H) are not allowed during Erase suspend.

Program/Erase Suspend is valid only during the page program or sector/block erase

operation. A maximum of time of “tsus”

(See AC Characteristics) is required to suspend the program/erase operation.

The Program/Erase Suspend command will be accepted by the device only if the SUS2/SUS1 bit in the Status Register

equal to 0 and WIP bit equal to 1 while a Page Program or a Sector or Block Erase operation is on-going. If the SUS2/SUS1

bit equal to 1 or WIP bit equal to 0, the Suspend command will be ignored by the device. The WIP bit will be cleared form 1

to 0 within “tsus” and the SUS2/SUS1 bit will be set from 0 to 1 immediately after Program/Erase Suspend. A power-off

during the suspend period will reset the device and release the suspend state. The command sequence is show in Figure29.

CS#

SCLK

9 10

MSB

18 19 20 21

22 23

26 27 28 29

30 31

Capacity ID7-ID0

CS#

SCLK

MSB

Memory Type ID15-ID8

11 12 13 14 15

9FH

Manufacturer ID

MSB

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