S25FL004K Meet Spansion Inc., S25FL004K Datasheet - Page 44

• 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.

7.20
44
32 KB Block Erase (52h)
The Block Erase instruction sets all memory within a specified block (32k-bytes) to the erased state of all 1s
(FFh). A Write Enable instruction must be executed before the device will accept the Block Erase Instruction
(Status Register bit WEL must equal 1). The instruction is initiated by driving the CS# pin low and shifting the
instruction code “52h” followed a 24-bit block address (A23-A0). (See
for the block diagrams of S25FL004K, S25FL008K,and S25FL016K.) The Block 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
Block Erase instruction will not be executed. After CS# is driven high, the self-timed Block 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 Block Erase cycle and becomes a 0 when the cycle is finished
and the device is ready to accept other instructions again. After the Block Erase cycle has finished the Write
Enable Latch (WEL) bit in the Status Register is cleared to 0. The Block Erase instruction will not be executed
if the addressed sector is protected by the Block Protect (CMP, SEC, TB, BP2, BP1, and BP0) bits (see
Table
6.2,
Table
Figure
6.3, and
CLK
SIO
CS#
SO
7.23.
Mode 3
Figure 7.23 32 kB Block Erase Instruction Sequence Diagram
Mode 0
= MSB
Table 6.4
S25FL004K / S25FL008K / S25FL016K
0
for Status Register Memory Protection (CMP = 0)).
1
BE1
Instruction (52h)
2
.
(See AC Electrical Characteristics on page
3
D a t a
4
5
High Impedance
6
S h e e t
7
23 22
8
9
24-Bit Address
Section 1., Block Diagrams on page 9
2
S25FL004K-016K_00_02 July 14, 2011
29 30 31
1
0
Mode 0
Mode 3
64.) While the Block