DESCRIPTION

The X25F128 is a 131,072-bit CMOS SerialFlash memory, internally organized 16K X 8. It features a “Univolt” Program and Read voltage, Serial Peripheral Interface (SPI), and software protocol allowing operation on a simple three-wire bus. The bus signals are a clock input (SCK), plus separate data in (SI) and data out (SO) lines. Access to the device is controlled through a chip select (CS) input, allowing any number of devices to share the same bus.

FEATURES

• 1MHz Clock Rate

• SPI Serial Interface

• 16K X 8 Bits

—32 Byte Small Sector Program Mode

• Low Power CMOS

—<1µA Standby Current

—<5mA Active Current

• 1.8V – 3.6V or 5V “Univolt” Read and

Program Power Supply Versions

• Block Lock Protection

—Protect 1/4, 1/2 or all of E2PROM Array

• Built-in Inadvertent Program Protection

—Power-Up/Power-Down protection circuitry

—Program Enable Latch

—Program Protect Pin

• Self-Timed Program Cycle

—5ms Program Cycle Time (Maximum)

• High Reliability

—Endurance: 100,000 cycles per byte

—Data Retention: 100 Years

—ESD protection: 2000V on all pins

• 8-Lead PDlP Package

• 16-Lead 150 mil SOIC Package