S25FL129P Meet Spansion Inc., S25FL129P Datasheet - Page 46

• Manufacturer Part Number: S25FL129P
• Description: 128-mbit Cmos 3.0 Volt Flash Memory With 104-mhz Spi Serial Peripheral Interface Multi I/o Bus
• Manufacturer: Meet Spansion Inc.

9.17
46
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 SE 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
driven low for the entire duration of the SE sequence. The command sequence is shown in
Table 9.1 on page
The host system must drive CS# high after the device has latched the 24th bit of the SE address, otherwise
the device does not execute the command. The SE operation begins as soon as CS# is driven high. The
device internally controls the timing of the operation, which requires a period of t
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 only executes a SE command if all Block Protect bits (BP2:BP0) are 0 (see
on page
CS#
SCK
SI
SO
17). Otherwise, the device ignores the command.
Hi-Z
Mode 3
Mode 0
25.
0
Figure 9.20 Sector Erase (SE) Command Sequence
Table 7.3 on page
1
D a t a
2
Command
3
S25FL129P
S h e e t
4
5
17) is a valid address for the SE command. CS# must be
6
( P r e l i m i n a r y )
7
MSB
23 22
8
9
24 bit Address
21
10
28
S25FL129P_00_04 November 2, 2009
3
29
2
SE
30
1
. The Status Register may
31
0
Table 7.3
Figure 9.20
and