S25FL064K Meet Spansion Inc., S25FL064K Datasheet - Page 40

• Manufacturer Part Number: S25FL064K
• Description: 64-mbit Cmos 3.0 Volt Flash Memory With 80-mhz Spi Serial Peripheral Interface Multi I/o Bus
• Manufacturer: Meet Spansion Inc.

7.19
40
Sector Erase (20h)
The Sector Erase instruction sets all memory within a specified sector (4K-bytes) to the erased state of all 1s
(FFh). A Write Enable instruction must be executed before the device will accept the Sector Erase Instruction
(Status Register bit WEL must equal 1). The instruction is initiated by driving the CS# pin low and shifting the
instruction code “20h” followed a 24-bit sector address (A23-A0)
Erase instruction sequence is shown in
The CS# pin must be driven high after the eighth bit of the last byte has been latched. If this is not done the
Sector Erase instruction will not be executed. After CS# is driven high, the self-timed Sector Erase instruction
will commence for a time duration of t
Erase cycle is in progress, the Read Status Register instruction may still be accessed for checking the status
of the BUSY bit. The BUSY bit is a 1 during the Sector Erase cycle and becomes a 0 when the cycle is
finished and the device is ready to accept other instructions again. After the Sector Erase cycle has finished
the Write Enable Latch (WEL) bit in the Status Register is cleared to 0. The Sector Erase instruction will not
be executed if the addressed sector is protected by the Block Protect (CMP, SEC, TB, BP2, BP1, and BP0)
bits
(Table 6.2, Status Register Memory Protection (CMP = 0) on page
CLK
SIO
CS#
SO
Mode 3
Mode 0
Figure 7.22 Sector Erase Instruction Sequence Diagram
= MSB
D a t a
0
1
SE
Instruction (20h)
Figure 7.22 on page
2
S25FL064K
.
See AC Electrical Characteristics on page 61.
S h e e t
3
4
5
High Impedance
6
( P r e l i m i n a r y )
7
23 22
8
40.
9
24-Bit Address
See Block Diagram on page 9.
S25FL064K_00_02 September 16, 2010
17).
2
29 30 31
1
0
Mode 0
Mode 3
While the Sector
The Sector