Product Description

SST25WF020A 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

manufacturability compared with alternate approaches.

This Serial Flash significantly improves performance

and reliability, while lowering power consumption. The

device writes (Program or Erase) with a single power

supply of 1.65-1.95V. 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 Program or Erase operation is less

than alternative Flash memory technologies.

Features

• Single Voltage Read and Write Operations

- 1.65-1.95V

• Serial Interface Architecture

- SPI Compatible: Mode 0 and Mode 3

• High Speed Clock Frequency

- 40MHz

• Superior Reliability

- Endurance: 100,000 Cycles

- Greater than 20 years Data Retention

• Ultra-Low Power Consumption:

- Active Read Current: 4 mA (typical)

- Standby Current: 10 μA (typical)

- Power-down Mode Standby Current: 4 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: 300 ms (typical)

- Sector-Erase Time: 40 ms (typical)

- Block-Erase Time: 80 ms (typical)

- Page-Program Time: 3 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

- Industrial: -40°C to +85°C