SST25VF040B-20-4C-QAE Microchip Technology, SST25VF040B-20-4C-QAE Datasheet - Page 15

• Manufacturer Part Number: SST25VF040B-20-4C-QAE
• Description: Flash 512K X 8 14 us
• Manufacturer: Microchip Technology

Specifications of SST25VF040B-20-4C-QAE

• Product Category: Flash
• Rohs: yes
• Memory Size: 4 Mbit
• Interface Type: SPI
• Access Time: 20 ns
• Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Package / Case: WSON-8

A Microchip Technology Company
©2011 Silicon Storage Technology, Inc.
4-KByte Sector-Erase
The Sector-Erase instruction clears all bits in the selected 4 KByte sector to FFH. A Sector-Erase
instruction applied to a protected memory area will be ignored. Prior to any Write operation, the Write-
Enable (WREN) instruction must be executed. CE# must remain active low for the duration of any com-
mand sequence. The Sector-Erase instruction is initiated by executing an 8-bit command, 20H, fol-
lowed by address bits [A
determine the sector address (SA
before the instruction is executed. The user may poll the Busy bit in the software status register or wait
T
Erase sequence.
Figure 12:Sector-Erase Sequence
SE
for the completion of the internal self-timed Sector-Erase cycle. See Figure 12 for the Sector-
SCK
CE#
23
SO
SI
-A
0
MODE 3
MODE 0
]. Address bits [A
X
), remaining address bits can be V
MSB
0 1 2 3 4 5 6 7 8
15
20
HIGH IMPEDANCE
MS
-A
12
] (A
MSB
ADD.
4 Mbit SPI Serial Flash
MS
= Most Significant address) are used to
15 16
ADD.
IL
23 24
or V
1295 SecErase.0
ADD.
IH.
CE# must be driven high
31
SST25VF040B
S71295-06-000
Data Sheet
02/11