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

• 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.
Pin Description
Figure 2: Pin Assignments
Table 1: Pin Description
Symbol
SCK
SI
SO
CE#
WP#
HOLD#
V
V
DD
SS
WP#
V SS
CE#
SO
Pin Name
Serial Clock
Serial Data Input
Serial Data Output To transfer data serially out of the device.
Chip Enable
Write Protect
Hold
Power Supply
Ground
1
2
3
4
8-Lead SOIC
Top View
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.
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 reg-
ister.
To temporarily stop serial communication with SPI flash memory without reset-
ting the device.
To provide power supply voltage: 2.7-3.6V for SST25VF040B
1295 08-soic S2A P1.0
8
7
6
5
V DD
HOLD#
SCK
SI
4
4 Mbit SPI Serial Flash
WP#
V SS
CE#
SO
1
2
3
4
8-Contact WSON
Top View
SST25VF040B
1295 08-wson QA P2.0
S71295-06-000
8
7
6
5
V DD
HOLD#
SCK
SI
Data Sheet
T1.0 1295
02/11