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X25080

Xicor
Part Number X25080
Manufacturer Xicor
Description SPI Serial E2PROM With Block LockTM Protection
Published Apr 16, 2005
Detailed Description APPLICATION NOTE A V A I L A B L E X25080 8K AN61 X25080 SPI Serial E2PROM With Block LockTM Protection DESCRIPTION ...
Datasheet PDF File X25080 PDF File

X25080
X25080

Overview
APPLICATION NOTE A V A I L A B L E X25080 8K AN61 X25080 SPI Serial E2PROM With Block LockTM Protection DESCRIPTION 1K x 8 Bit FEATURES • 2MHz Clock Rate • SPI Modes (0,0 & 1,1) • 1K 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 E2PROM 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 • 8-Lead PDlP Package • 8-Lead SOIC Package • 14-Lead TSSOP Package FUNCTIONAL DIAGRAM STATUS REGISTER WRITE PROTECT LOGIC The X25080 is a CMOS 8192-bit serial E2PROM, internally organized as 1K x 8.
The X25080 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.
The X25080 also features two additional inputs that provide the end user with added flexibility.
By asserting the HOLD input, the X25080 will ignore transitions on its inputs, thus allowing the host to service higher priority interrupts.
The WP input can be used as a hardwire input to the X25080 disabling all write attempts to the status register, thus providing a mechanism for limiting end user capability of altering 0, 1/4, 1/2 or all of the memory.
The X25080 utilizes Xicor’s proprietary Direct Write™ cell, providing a minimum endurance of 100,000 cycles and a minimum data retention of 100 years.
X DECODE LOGIC 8 1K BYTE ARRAY 8 X 256 SO SI SCK CS HOLD COMMAND DECODE AND CONTROL LOGIC 8 8 X 256 16 16 X 256 WP WRITE CONTROL AND TIMING LOGIC 32 8 Y DECODE DATA REGISTER 3090 I...


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