Uniform Sector

Standard and Dual Serial Flash

GD25WD10C/05C

19

Figure11. 64KB Block Erase Sequence Diagram

7.13. Chip Erase (CE) (60/C7H)

The Chip Erase (CE) command is for erasing the all data of the chip. A Write Enable (WREN) command must

previously have been executed to set the Write Enable Latch (WEL) bit .The Chip Erase (CE) command is entered by driving

CS# Low, followed by the command code on Serial Data Input (SI). CS# must be driven Low for the entire duration of the

sequence.

The Chip Erase command sequence: CS# goes low  sending Chip Erase command  CS# goes high. The

command sequence is shown in Figure12. CS# must be driven high after the eighth bit of the command code has been

latched in, otherwise the Chip Erase command is not executed. As soon as CS# is driven high, the self-timed Chip Erase

the value of the Write In Progress (WIP) bit. The Write In Progress (WIP) bit is 1 during the self-timed Chip Erase cycle, and

is 0 when it is completed. At some unspecified time before the cycle is completed, the Write Enable Latch (WEL) bit is reset.

The Chip Erase (CE) command is executed if the Block Protect (BP2, BP1, BP0) bits are all 0. The Chip Erase (CE)

command is not executed if any sector is under protection.

Figure12. Chip Erase Sequence Diagram

7.14. Deep Power-Down (DP) (B9H)

Executing the Deep Power-Down (DP) command is the only way to enter the lowest consumption mode (the Deep

Power-Down Mode). Unlike deselecting the device by driving CS# high, or entering into the Standby Mode (if there is no

internal cycle currently in progress), the Deep Power-Down Mode provides an extra software protection mechanism while

the device is not in active use. The only access to this mode is by executing the Deep Power-Down (DP) command. Since

in the Deep Power-Down mode, the device ignores all Write, Program and Erase commands. Once the device is in the

Deep Power-Down Mode, all commands are ignored except the Release from Deep Power-Down and Read Device ID (RDI)

command. The Release from Deep Power-Down and Read Device ID (RDI) command releases the device from Deep

Power-Down mode, also allows the Device ID of the device to be output on SO.

The Deep Power-Down Mode automatically stops at Power-Down, and the device is in the Standby Mode after Power-

Up.

Command

0

1

2

3

4

5

6

7

60H or C7H

CS#

SCLK

SI

Command

0

1

2

3

4

5

6

7

D8H

CS#

SCLK

SI

8

9

29 30 31

MSB

2

1

0

24 Bits Address

23 22