S25FL040A Meet Spansion Inc., S25FL040A Datasheet - Page 14

• Manufacturer Part Number: S25FL040A
• Description: Small Sector For Boot And Parameter Storage 4-megabit Cmos 3.0 Volt Flash Memory With 50 Mhz Spi Bus Interface
• Manufacturer: Meet Spansion Inc.

7.7
14
Hold Mode (HOLD#)
The Hold input (HOLD#) stops any serial communication with the device, but does not terminate any Write
Status Register, program or erase operation that is currently in progress.
The Hold mode starts on the falling edge of HOLD# if SCK is also low (see
use). If the falling edge of HOLD# does not occur while SCK is low, the Hold mode begins after the next falling
edge of SCK (non-standard use).
The Hold mode ends on the rising edge of HOLD# signal (standard use) if SCK is also low. If the rising edge
of HOLD# does not occur while SCK is low, the Hold mode ends on the next falling edge of CLK (non-
standard use) See
The SO output is high impedance, and the SI and SCK inputs are ignored (don’t care) for the duration of the
Hold mode.
CS# must remain low for the entire duration of the Hold mode to ensure that the device internal logic remains
unchanged. If CS# goes high while the device is in the Hold mode, the internal logic is reset. To prevent the
device from reverting to the Hold mode when device communication is resumed, HOLD# must be held high,
followed by driving CS# low.
Block Protect Bits
BP2
Status Register
0
0
0
0
1
1
1
1
HOLD#
SCK
BP1
0
0
1
1
0
0
1
1
BP0
0
1
0
1
0
1
0
1
Figure
Address Range
70000–7FFFF
60000–7FFFF
40000–7FFFF
00000–7FFFF
00000–7FFFF
00000–7FFFF
00000–7FFFF
Protected
Table 7.3 S25FL040A Protected Area Sizes (Uniform Sector)
None
7.1.
(standard use)
Condition
Figure 7.1 Hold Mode Operation
Hold
S25FL040A
(2) SA7:SA6
(4) SA7:SA4
(8) SA7:SA0
(8) SA7:SA0
(8) SA7:SA0
(8) SA7:SA0
Protected
Sectors
(1) SA7
(0)
D a t a
Memory Array
S h e e t
Address Range
00000–7FFFF
00000–6FFFF
00000–5FFFF
00000–3FFFF
Unprotected
None
None
None
None
(non-standard use)
Condition
Hold
Unprotected
SA7:SA0
SA6:SA0
SA5:SA0
SA3:SA0
Figure 7.1 on page
Sectors
None
None
None
None
S25FL040A_00_B2 July 2, 2007
Protected Portion of
Total Memory Area
Lower 1/4 (128 KB)
Lower 1/2 (256 KB)
Upper 1/8 (64 KB)
All (512 KB)
All (512 KB)
All (512 KB)
All (512 KB)
14, standard
0