DESCRIPTION

The X25128 is a CMOS 131,072-bit serial E2PROM, internally organized as 16K x 8. The X25128 features a 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

?2MHz Clock Rate

?SPI Modes (0,0 & 1,1)

?16K X 8 Bits

—32 Byte Page Mode

?Low Power CMOS

—<1μA Standby Current

—<5mA Active Current

?2.7V To 5.5V Power Supply

?Block Lock Protection

—Protect 1/4, 1/2 or all of E2 PROM Array

?Built-in Inadvertent Write Protection

—Power-Up/Power-Down protection circuitry

—Write Enable Latch

—Write Protect Pin

?Self-Timed Write Cycle

—5ms Write Cycle Time (Typical)

?High Reliability

—Endurance: 100,000 cycles

—Data Retention: 100 Years

—ESD protection: 2000V on all pins

?14-Lead SOIC Package

?16-Lead SOIC Package

?8-Lead PDIP Package