S25FL004K Meet Spansion Inc., S25FL004K Datasheet - Page 49

• Manufacturer Part Number: S25FL004K
• Description: 4-mbit / 8-mbit / 16-mbit Cmos 3.0 Volt Flash Memory With 104-mhz Spi Serial Peripheral Interface Multi I/o Bus
• Manufacturer: Meet Spansion Inc.

7.25
July 14, 2011 S25FL004K-016K_00_02
Deep Power-down (B9h)
Although the standby current during normal operation is relatively low, standby current can be further reduced
with the Deep Power-down instruction. The lower power consumption makes the Deep Power-down
instruction especially useful for battery powered applications (see I
Characteristics on page
code “B9h” as shown in
The CS# pin must be driven high after the eighth bit has been latched. If this is not done the Deep Power-
down instruction will not be executed. After CS# is driven high, the power-down state will entered within the
time duration of t
Release from Deep Power-down / Device ID instruction, which restores the device to normal operation, will
be recognized. All other instructions are ignored. This includes the Read Status Register instruction, which is
always available during normal operation. Ignoring all but one instruction makes the Power Down state a
useful condition for securing maximum write protection. The device always powers-up in the normal operation
with the standby current of I
CLK
CS#
SI
Mode 3
Mode 0
DP
0
.
(See AC Electrical Characteristics on page
Figure 7.28 Deep Power-down Instruction Sequence Diagram
1
Figure
63). The instruction is initiated by driving the CS# pin low and shifting the instruction
D a t a
2
S25FL004K / S25FL008K / S25FL016K
Instruction (B9h)
CC1
7.28.
.
3
S h e e t
4
5
6
7
64.) While in the power-down state only the
t
Standard Current
DP
CC1
and I
CC2
in
Mode 3
Mode 0
Section 8.4, DC Electrical
Deep Power-down Current
49