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X25650S8IG Datasheet(PDF) 1 Page - IC MICROSYSTEMS |
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X25650S8IG Datasheet(HTML) 1 Page - IC MICROSYSTEMS |
1 / 14 page 5MHz SPI Serial E 2 PROM with Block Lock TM Protection 64K 8K x 8 Bit © Xicor, Inc. 1994, 1995, 1996 Patents Pending 1 Characteristics subject to change without notice 7037–1.5 6/19/97 T1/C0/D0 SH X25650 FEATURES •5MHz Clock Rate •Low Power CMOS <1µA Standby Current <5mA Active Current •2.5V To 5.5V Power Supply •SPI Modes (0,0 & 1,1) •8K X 8 Bits 32 Byte Page Mode •Block Lock™ Protection Protect 1/4, 1/2 or all of E 2PROM 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 SOIC 20-Lead TSSOP DESCRIPTION The X25650 is a CMOS 65,536-bit serial E 2 PROM, internally organized as 8K x 8. The X25650 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 X25650 also features two additional inputs that provide the end user with added flexibility. By asserting the HOLD input, the X25650 will ignore tran- sitions on its inputs, thus allowing the host to service higher priority interrupts. The WP input can be used as a hardwire input to the X25650 disabling all write attempts to the status register, thus providing a mech- anism for limiting end user capability of altering 0, 1/4, 1/2 or all of the memory. The X25650 utilizes Xicor’s proprietary Direct Write TM cell, providing a minimum endurance of 100,000 cycles and a minimum data retention of 100 years. COMMAND DECODE AND CONTROL LOGIC WRITE CONTROL AND TIMING LOGIC WRITE PROTECT LOGIC X DECODE LOGIC 8K BYTE ARRAY 64 X 256 Y DECODE DATA REGISTER SO SI SCK CS HOLD WP 64 128 8 32 STATUS REGISTER 64 128 X 256 64 X 256 7037 FRM F01 Direct Write TM and Block LockTM Protection is a trademark of Xicor, Inc. FUNCTIONAL DIAGRAM This X25650 device has been acquired by IC MICROSYSTEMS from Xicor, Inc. ICmic IC MICROSYSTEMS TM |
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