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Description

The 25 series Serial Flash family features 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. The SST25VF040B

devices are enhanced with improved operating frequency

and even lower power consumption.

SST25VF040B SPI serial Flash memories are manufactured

with proprietary, high-performance CMOS

SuperFlash? technology. The split-gate cell design and

thick-oxide tunneling injector attain better reliability and

manufacturability compared with alternate approaches.

SST25VF040B devices significantly improve performance

and reliability, while lowering power consumption.

The devices write (Program or Erase) with a single

power supply of 2.7V-3.6V for SST25VF040B. 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 consumed during any erase or program

operation is less than alternative Flash memory technologies.

Features

? Single Voltage Read and Write Operations:

- 2.7V-3.6V

? Serial Interface Architecture:

- SPI Compatible: Mode 0 and Mode 3

? High-Speed Clock Frequency:

- Up to 50 MHz

? Superior Reliability:

- Endurance: 100,000 Cycles (typical)

- Greater than 100 years Data Retention

? Low-Power Consumption:

- Active Read Current: 10 mA (typical)

- Standby Current: 5 μA (typical)

? Flexible Erase Capability:

- Uniform 4-Kbyte sectors

- Uniform 32-Kbyte overlay blocks

- Uniform 64-Kbyte overlay blocks

? Fast Erase and Byte Program:

- Chip Erase Time: 35 ms (typical)

- Sector/Block Erase Time: 18 ms (typical)

- Byte Program Time: 7 μs (typical)

? Auto Address Increment (AAI) Programming:

- Decrease total chip programming time over

Byte Program operations

? End of Write Detection:

- Software polling the BUSY bit in STATUS

Register

- Busy Status readout on SO pin in AAI Mode

? Hold Pin (HOLD#):

- Suspends a serial sequence to the memory

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:

- Commercial: 0°C to +70°C

- Industrial: -40°C to +85°C

? All devices are RoHS compliant