S25FL128P Meet Spansion Inc., S25FL128P Datasheet - Page 39

• Manufacturer Part Number: S25FL128P
• Description: 128 Megabit Cmos 3.0 Volt Flash Memory With 104 Mhz Spi Serial Peripheral Interface Bus
• Manufacturer: Meet Spansion Inc.

13. Power-up and Power-down
14. Initial Delivery State
July 2, 2007 S25FL128P_00_04
During power-up and power-down, certain conditions must be observed. CS# must follow the voltage applied
on V
(see
A pull-up resistor on Chip Select (CS#) typically meets proper power-up and power-down requirements.
No Write Status Register, program, or erase command should be sent to the device until V
minimum, plus a delay of t
the WEL bit is reset (0).
Each device in the host system should have the V
package pins (this capacitor is generally of the order of 0.1 µF), as a precaution to stabilizing the V
When V
operations are disabled and the device does not respond to any commands. Note that data corruption may
result if a power-down occurs while a Write Register, program, or erase operation is in progress.
The device is delivered with all bits set to 1 (each byte contains FFh) upon initial factory shipment. The Status
Register contains 00h (all Status Register bits are 0).
At power-up, V
At power-down, V
CC
Figure 13.1
Symbol
V
CC(min)
, and must not be driven low to select the device until V
t
CC
PU
drops from the operating voltage to below the minimum V
D a t a
and
CC
V
V
cc
cc
SS
(min.) plus a period of t
(max)
(min)
Table
S h e e t
V
cc
PU
13.1):
. At power-up, the device is in standby mode (not Deep Power Down mode) and
Table 13.1 Power-Up Timing Characteristics
( P r e l i m i n a r y )
Figure 13.1 Power-Up Timing Diagram
V
CC
(min) to device operation
S25FL128P
V
CC
Parameter
PU
(minimum)
t
PU
CC
rail decoupled by a suitable capacitor close to the
CC
reaches the allowable values as follows
Full Device Access
CC
threshold at power-down, all
Time
Min
2.7
15
CC
Max
rises to the V
CC
feed.
Unit
ms
V
CC
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