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X88C64SI Datasheet(PDF) 1 Page - Xicor Inc. |
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X88C64SI Datasheet(HTML) 1 Page - Xicor Inc. |
1 / 14 page X88C64 1 © Xicor, Inc. 1994, 1995, 1996 Patents Pending Characteristics subject to change without notice 3867-1.5 7/9/96 T0/C2/D0 NS E2 Micro-Peripheral 3867 FHD F02 8051 Microcontroller Family Compatible CONCURRENT READ WRITE™ is a trademark of Xicor, Inc. DESCRIPTION The X88C64 is an 8K x 8 E2PROM fabricated with advanced CMOS Textured Poly Floating Gate Tech- nology. The X88C64 features a Multiplexed Address and Data bus allowing a direct interface to a variety of popular single-chip microcontrollers operating in ex- panded multiplexed mode without the need for addi- tional interface circuitry. The X88C64 is internally configured as two indepen- dent 4K x 8 memory arrays. This feature provides the ability to perform nonvolatile memory updates in one array and continue operation out of code stored in the other array; effectively eliminating the need for an auxiliary memory device for code storage. To write to the X88C64, a three-byte command sequence must precede the byte(s) being written. The X88C64 also provides a second generation software data protection scheme called Block Protect. Block Protect can provide write lockout of the entire device or selected 1K blocks. There are eight 1K x 8 blocks that can be write protected individually in any combi- nation required by the user. Block Protect, in addition to Write Control input, allows the different segments of the memory to have varying degrees of alterability in normal system operation. FEATURES • CONCURRENT READ WRITE™ —Dual Plane Architecture —Isolates Read/Write Functions Between Planes —Allows Continuous Execution of Code From One Plane While Writing in the Other Plane • Multiplexed Address/Data Bus —Direct Interface to Popular 8051 Family • High Performance CMOS —Fast Access Time, 120ns —Low Power —60mA Active Maximum —500 µA Standby Maximum • Software Data Protection • Block Protect Register —Individually Set Write Lock Out in 1K Blocks • Toggle Bit Polling —Early End of Write Detection • Page Mode Write —Allows up to 32 Bytes to be Written in One Write Cycle • High Reliability —Endurance: 100,000 Write Cycle —Data Retention: 100 Years CONTROL LOGIC SOFTWARE DATA PROTECT CE WR RD PSEN A8–A11 ALE L A T C H E S D E C O D E A12 A12 M U X 1K BYTES 1K BYTES 1K BYTES 1K BYTES Y DECODE I/O & ADDRESS LATCHES AND BUFFERS A/D0–A/D7 WC 1K BYTES 1K BYTES 1K BYTES 1K BYTES A12 X FUNCTIONAL DIAGRAM SLIC 64K X88C64 8192 x 8 Bit APPLICATION NOTE A V AILABLE AN63 |
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