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X25170AE Datasheet(PDF) 1 Page - IC MICROSYSTEMS |
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X25170AE Datasheet(HTML) 1 Page - IC MICROSYSTEMS |
1 / 15 page ©Xicor, Inc. 2000 Patents Pending 9900-5004.9 5/26/00 EP Characteristics subject to change without notice. 1 of 15 16K X25170 2K x 8 Bit SPI Serial E 2PROM with Block Lock ™ Protection FEATURES •5MHz Clock Rate •SPI Modes (0,0 & 1,1) •2K X 8 Bits —32 byte page mode •Low Power CMOS —<1µA standby current —<5mA active current •2.5V To 5.5V Power Supply •Block Lock Protection —Protect 1/4, 1/2 or all of E 2PROM 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 DESCRIPTION The X25170 is a CMOS 16384-bit serial E2PROM, internally organized as 2K x 8. The X25170 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 X25170 also features two additional inputs that provide the end user with added flexibility. By asserting the HOLD input, the X25170 will ignore transitions on its inputs, thus allowing the host to service higher prior- ity interrupts. The WP input can be used as a hardwire input to the X25170 (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 X25170 utilizes Xicor’s proprietary Direct Write cell, providing a minimum endurance of 100,000 cycles and a minimum data retention of 100 years. ™ Direct Write™ and Block Lock™ Protection is a trademark of Xicor, Inc. BLOCK DIAGRAM Command Decode and Control Logic Write Control and Timing Logic Write Protect Logic X Decode Logic 2K Byte Array 16 X 256 Y Decode Data Register SO SI SCK CS HOLD WP 16 32 8 32 Status Register 16 32 X 256 16 X 256 ICmic IC MICROSYSTEMS TM This X25170 device has been acquired by IC MICROSYSTEMS from Xicor, Inc. |
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