SST25PF040C
4 Mbit, 3.3V, SPI Serial Flash
Features
• Single Voltage Read and Write Operations
- 2.3-3.6V
• Serial Interface Architecture
- SPI Compatible: Mode 0 and Mode 3
• High Speed Clock Frequency
- 40MHz
• Dual Input/Output Support
- Fast-Read Dual-Output Instruction (3BH)
- Fast-Read Dual I/O Instruction (BBH)
• Superior Reliability
- Endurance: 100,000 Cycles
- Greater than 20 years Data Retention
• Ultra-Low Power Consumption:
- Active Read Current: 5 mA (typical)
- Standby Current: 5 µA (typical)
- Power-down Mode Standby Current: 3 µA
(typical)
• Flexible Erase Capability
- Uniform 4 KByte sectors
- Uniform 64 KByte overlay blocks
• Page Program Mode
- 256 Bytes/Page
• Fast Erase and Page-Program:
- Chip-Erase Time: 250 ms (typical)
- Sector-Erase Time: 40 ms (typical)
- Block-Erase Time: 80 ms (typical)
- Page-Program Time: 4 ms/ 256 bytes
(typical)
• End-of-Write Detection
- Software polling the BUSY bit in Status
Register
• Hold Pin (HOLD#)
- Suspend a serial sequence without
deselecting the device
• Write Protection (WP#)
- Enables/Disables the Lock-Down function of
the status register
• Software Write Protection
- Write protection through Block-Protection bits
in status register
• Temperature Range
- Automotive AEC-Q100 Qualified
- Industrial: -40°C to +85°C
- Industrial Plus: -40°C to +105°C
- Extended: -40°C to +125°C
• Packages Available
- 8-contact USON (2 mm x 3 mm)
- 8-lead SOIC (150 mils)
- 8-contact WDFN (5mm x 6mm)
• All devices are RoHS compliant
Product Description
SST25PF040C is a member of the Serial Flash 25
Series family and feature a four-wire, SPI-compatible
interface that allows for a low pin-count package which
occupies less board space and ultimately lowers total
system costs. SPI serial flash memory is manufactured
with proprietary, high-performance CMOS SuperFlash
technology. The split-gate cell design and thick-oxide
tunneling injector attain better reliability and manufac-
turability compared with alternate approaches.
This Serial Flash significantly improve performance
and reliability, while lowering power consumption. The
device writes (Program or Erase) with a single power
supply of 2.3-3.6V. The total energy consumed is a
function of the applied voltage, current, and time of
application. Since for any given voltage range, the
SuperFlash technology uses less current to program
and has a shorter erase time, the total energy con-
sumed during any Erase or Program operation is less
than alternative flash memory technologies.
SST25PF040C is offered in 8-lead SOIC and 8-contact
WDFN and USON packages. See
Figure 2-1
for the pin
assignments.
2015-2019 Microchip Technology Inc.
DS20005397E-page 1
SST25PF040C
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DS20005397E-page 2
2019 Microchip Technology Inc.
SST25PF040C
TABLE 2-1:
Symbol
SCK
PIN DESCRIPTION
Pin Name
Serial Clock
Functions
To provide the input/output 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.
SI
SO
SIO
[0:1]
Serial Data Input
Serial Data Output
Serial Data Input/
To transfer commands, addresses, or data serially into the device, or data out of
Output for Dual I/O the device. Inputs are latched on the rising edge of the serial clock. Data is
Mode
shifted out on the falling edge of the serial clock. These pins are used in Dual
I/O mode
Chip Enable
The device is enabled by a high to low transition on CE#. CE# must remain low
for the duration of any command sequence. The device is deselected and
placed in Standby mode when CE# is high.
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 while device
is selected.
To provide power supply voltage: 2.3-3.6V
CE#
WP#
HOLD#
V
DD
V
SS
Write Protect
Hold
Power Supply
Ground
2015-2019 Microchip Technology Inc.
DS20005397E-page 5
Microcontroller MCU
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