SST25LF020A-33-4I-SAE SILICON STORAGE TECHNOLOGY, SST25LF020A-33-4I-SAE Datasheet - Page 7

• Manufacturer Part Number: SST25LF020A-33-4I-SAE
• Description: 2M FLASH MEMORY, SPI EEPROM, SOIC8
• Manufacturer: SILICON STORAGE TECHNOLOGY

Specifications of SST25LF020A-33-4I-SAE

• Memory Size: 2Mbit
• Clock Frequency: 33MHz
• Supply Voltage Range: 3V To 3.6V
• Memory Case Style: SOIC
• No. Of Pins: 8
• Svhc: No SVHC (18-Jun-2010)
• Device: RoHS Compliant
• Package / Case: SOIC
• Memory Type: Flash
• Memory Configuration: 256K X 8
• Interface Type: Serial, SPI
• Rohs Compliant: Yes

2 Mbit / 4 Mbit SPI Serial Flash
SST25LF020A / SST25LF040A
Block Protection (BP1, BP0)
The Block-Protection (BP1, BP0) bits define the size of the
memory area, as defined in Table 5, to be software pro-
tected against any memory Write (Program or Erase)
operations. The Write-Status-Register (WRSR) instruction
is used to program the BP1 and BP0 bits as long as WP#
is high or the Block-Protect-Lock (BPL) bit is 0. Chip-Erase
can only be executed if Block-Protection bits are both 0.
After power-up, BP1 and BP0 are set to 1.
TABLE 5: S
Auto Address Increment (AAI)
The Auto Address Increment Programming-Status bit pro-
vides status on whether the device is in AAI programming
mode or Byte-Program mode. The default at power up is
Byte-Program mode.
©2006 Silicon Storage Technology, Inc.
1. Default at power-up for BP1 and BP0 is ‘11’.
3 (Full Memory Array)
1 (1/4 Memory Array)
2 (1/2 Memory Array)
Protection Level
OFTWARE
0
S
TATUS
R
EGISTER
BP1
0
0
1
1
Register
Status
Bit
B
LOCK
BP0
0
1
0
1
P
ROTECTION
7
030000H-03FFFFH
020000H-03FFFFH
000000H-03FFFFH
Block Protection Lock-Down (BPL)
WP# pin driven low (V
Lock-Down (BPL) bit. When BPL is set to 1, it prevents any
further alteration of the BPL, BP1, and BP0 bits. When the
WP# pin is driven high (V
its value is “Don’t Care”. After power-up, the BPL bit is
reset to 0.
1
2 Mbit
None
Protected Memory Area
IL
), enables the Block-Protection-
IH
), the BPL bit has no effect and
000000H-07FFFFH
060000H-07FFFFH
040000H-07FFFFH
4 Mbit
None
S71242-05-000
Data Sheet
T5.0 1242
1/06