SST25VF040B 4-Mbit SPI Serial Flash: Pinout, Equivalent and Datasheet

The following figure is the diagram of SST25VF040B Pinout.

Pinout

The following is the Footprint of SST25VF040B.

Footprint

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.

This article provides you with a basic overview of the SST25VF040B 4-Mbit SPI Serial Flash, including its pin descriptions, features and specifications, etc., to help you quickly understand what SST25VF040B is.

● 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

The following is the Functional Block Diagram of SST25VF040B.

Functional Block Diagram

The following is the Package Marking of SST25VF040B.

8-Contact WSON (6 mm x 5 mm)

Example

Microchip Technology Inc. is a leading provider of microcontroller and analog semiconductors, providing low-risk product development, lower total system cost and faster time to market for thousands of diverse customer applications worldwide. Headquartered in Chandler, Arizona, Microchip offers outstanding technical support along with dependable delivery and quality.