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X25320VG-2.7 Datasheet(PDF) 1 Page - IC MICROSYSTEMS |
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X25320VG-2.7 Datasheet(HTML) 1 Page - IC MICROSYSTEMS |
1 / 15 page 1 32K X25320 4K x 8 Bit ©Xicor, Inc. 1994, 1995, 1996 Patents Pending Characteristics subject to change without notice 3063-3.9 6/11/96 T4/C1/D0 NS Direct Write™ and Block Lock™ Protection is a trademark of Xicor, Inc. SPI Serial E 2PROM With Block LockTM Protection FEATURES •2MHz Clock Rate •SPI Modes (0,0 & 1,1) •4K X 8 Bits — 32 Byte Page Mode •Low Power CMOS —<1µA Standby Current — <5mA Active Current During Write •2.7V 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 X25320 is a CMOS 32768-bit serial E 2PROM, internally organized as 4K x 8. The X25320 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 con- trolled through a chip select (CS) input, allowing any number of devices to share the same bus. The X25320 also features two additional inputs that provide the end user with added flexibility. By asserting the HOLD input, the X25320 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 X25320 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 X25320 utilizes Xicor’s proprietary Direct Write™ cell, providing a minimum endurance of 100,000 cycles and a minimum data retention of 100 years. FUNCTIONAL DIAGRAM COMMAND DECODE AND CONTROL LOGIC WRITE CONTROL AND TIMING LOGIC WRITE PROTECT LOGIC X DECODE LOGIC 4K BYTE ARRAY 32 X 256 Y DECODE DATA REGISTER SO SI SCK CS HOLD WP 32 64 8 32 STATUS REGISTER 32 64 X 256 32 X 256 3063 ILL F01 This X25320 device has been acquired by IC MICROSYSTEMS from Xicor, Inc. ICmic IC MICROSYSTEMS TM |
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