August 28, 2006 S25FL016A_00_C0

S25FL016A

19

Da ta

Shee t

(Prelim i nar y )

Figure 9.8 Page Program (PP) Command Sequence

9.9

Sector Erase (SE)

The Sector Erase (SE) command sets all bits at all addresses within a specified sector to a logic 1. A WREN

command is required prior to writing the PP command.

The host system must drive CS# low, and then write the SE command plus three address bytes on SI. Any

address within the sector (see Table 7.1 on page 11) is a valid address for the SE command. CS# must be

driven low for the entire duration of the SE sequence. The command sequence is shown in Figure 9.9 and

Table 9.4.

The host system must drive CS# high after the device has latched the 8th bit of the SE command, otherwise

the device does not execute the command. The SE operation begins as soon as CS# is driven high. The

be read to check the value of the Write In Progress (WIP) bit while the SE operation is in progress. The WIP

bit is 1 during the SE operation, and is 0 when the operation is completed. The device internally resets the

Write Enable Latch to 0 before the operation completes (the exact timing is not specified).

The device does not execute an SE command that specifies a sector that is protected by the Block Protect

bits (BP2:BP0) (see Table 7.1 on page 11).

Figure 9.9 Sector Erase (SE) Command Sequence

0

34

33

32

31

30

29

28

10

9

8

7

6

5

4

3

2

1

35 36 37 38

39

46

45

44

43

42

41

40

47 48 49 50

51 52 53 54

55

23 22 21

3

21

07

6

5

4

3

2

1

0

Data Byte 1

24-Bit Address

Command

Data Byte 2

Data Byte 3

Data Byte 256

MSB

MSB

MSB

MSB

MSB

SCK

SI

SCK

SI

7

65

4

3

2

1

0

76

54

3

21

0

7

6

5

4

3

21

0

CS#

CS#

Mode 0

Mode 3

CS#

SCK

SI

SO

MSB

Command

24-bit Address

01

2

3

45

6

7

8

910

28

29

30

31

23

22

21

3

2

1

0

Hi-Z

Mode 0

Mode 3