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X25138

Xicor
Part Number X25138
Manufacturer Xicor
Description 5MHz SPI Serial E2PROM with Block Lock PROTECTION
Published Apr 16, 2005
Detailed Description 128K X25138 16K x 8 Bit 5MHz SPI Serial E2PROM with Block LockTM Protection FEATURES DESCRIPTION The X25138 is a CMOS...
Datasheet PDF File X25138 PDF File

X25138
X25138

Overview
128K X25138 16K x 8 Bit 5MHz SPI Serial E2PROM with Block LockTM Protection FEATURES DESCRIPTION The X25138 is a CMOS 128K-bit serial E2PROM, internally organized as 16K x 8.
The X25138 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 X25138 also features two additional inputs that provide the end user with added flexibility.
By asserting the HOLD input, the X25138 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 X25138 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 X25138 utilizes Xicor’s proprietary Direct WriteTM cell, providing a minimum endurance of 100,000 cycles and a minimum data retention of 100 years.
• • • • • • • • • • • 5MHz Clock Rate Low Power CMOS <1mA Standby Current <5mA Active Current 2.
5V To 5.
5V Power Supply SPI Modes (0,0 & 1,1) 16K X 8 Bits 32 Byte Page Mode Block Lock™ Protection Protect 1/4, 1/2 or all of E2PROM Array Programmable Hardware Write Protection In-Circuit Programmable ROM Mode Built-in Inadvertent Write Protection Power-Up/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 Packages 8-Lead XBGA 8, 14-Lead SOIC 8-Lead PDIP 8-Lead TSSOP FUNCTIONAL DIAGRAM ST ATUS REGISTER WRITE PROTECT LOGIC X DECODE LOGIC 128 128 X 256 SO SI SCK CS HOLD COMMAND DECODE AND CONTROL LOGIC 128 128 X 256 16K BYTE ARRAY 256 256 X 256 WP WRITE CONTROL AND TIMING LOGIC 32 8 Y DECODE Di...


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