SST25VF040B-50-4I-QAF SILICON STORAGE TECHNOLOGY, SST25VF040B-50-4I-QAF Datasheet - Page 3

• Manufacturer Part Number: SST25VF040B-50-4I-QAF
• Description: 4M FLASH MEMORY, SPI EEPROM, WSON-8
• Manufacturer: SILICON STORAGE TECHNOLOGY

Specifications of SST25VF040B-50-4I-QAF

• Memory Size: 4Mbit
• Clock Frequency: 50MHz
• Supply Voltage Range: 2.7V To 3.6V
• Memory Case Style: WSON
• No. Of Pins: 8
• Svhc: No SVHC (18-Jun-2010)
• Device: RoHS Compliant
• Package / Case: WSON
• Memory Type: Flash
• Memory Configuration: 512K X 8
• Interface Type: Serial, SPI
• Rohs Compliant: Yes

4 Mbit SPI Serial Flash
SST25VF040B
PIN DESCRIPTION
TABLE 1: P
©2006 Silicon Storage Technology, Inc.
Symbol
SCK
SI
SO
CE#
WP#
HOLD#
V
V
DD
SS
FIGURE 1: P
WP#
V SS
CE#
SO
Pin Name
Serial Clock
Serial Data Input
Serial Data Output
Chip Enable
Write Protect
Power Supply
Ground
Hold
IN
D
IN
ESCRIPTION
1
2
3
4
A
SSIGNMENTS
8-
1295 08-soic S2A P1.0
Top View
LEAD
SOIC
Functions
To provide the timing of the serial interface.
Commands, addresses, or input data are latched on the rising edge of the clock input,
while output data is shifted out on the falling edge of the clock input.
To transfer commands, addresses, or data serially into the device.
Inputs are latched on the rising edge of the serial clock.
To transfer data serially out of the device.
Data is shifted out on the falling edge of the serial clock.
Outputs Flash busy status during AAI Programming when reconfigured as RY/BY# pin.
See “Hardware End-of-Write Detection” on page 12 for details.
The device is enabled by a high to low transition on CE#. CE# must remain low for the
duration of any command sequence.
The Write Protect (WP#) pin is used to enable/disable BPL bit in the status register.
To temporarily stop serial communication with SPI flash memory without resetting the
device.
To provide power supply voltage: 2.7-3.6V for SST25VF040B
8
7
6
5
V DD
HOLD#
SCK
SI
3
WP#
CE#
V SS
SO
1
2
3
4
8-
CONTACT
Top View
1295 08-wson QA P2.0
WSON
8
7
6
5
V DD
HOLD#
SCK
SI
S71295-01-000
Data Sheet
T1.0 1295
1/06