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X84640I-2.5 Datasheet(PDF) 1 Page - IC MICROSYSTEMS |
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X84640I-2.5 Datasheet(HTML) 1 Page - IC MICROSYSTEMS |
1 / 22 page © Xicor, Inc. 1998 Patents Pending 7067 1.1 6/10/98 T10/C0/D3 1 Characteristics subject to change without notice 16K/64K/128K MPS TM EEPROM Advanced MPS™ Micro Port Saver EEPROM with Block Lock™ Protection FEATURES •Up to 15MHz data transfer rate •20ns Read Access Time •Direct Interface to Microprocessors and Microcontrollers —Eliminates I/O port requirements —No interface glue logic required —Eliminates need for parallel to serial converters •Low Power CMOS —1.8V–3.6V, 2.5V–5.5V and 5V ± 10% Versions —Standby Current Less than 1µA —Active Current Less than 1mA •Byte or Page Write Capable —32-Byte Page Write Mode •New Programmable Block Lock™ Protection —Software Write Protection —Programmable Hardware Write Protection •Block Lock (0, 1/4, 1/2, or all of the array) •Typical Nonvolatile Write Cycle Time: 3ms •High Reliability —100,000 Endurance Cycles —Guaranteed Data Retention: 100 Years •Small Package Options —8-Lead Mini-DIP Package —8, 14-Lead SOIC Packages —8, 20, 28-Lead TSSOP Packages —8-Lead XBGA Packages DESCRIPTION The µPort Saver memories need no serial ports or special hardware and connect to the processor memory bus. Replacing bytewide data memory, the µPort Saver uses bytewide memory control functions, takes a fraction of the board space and consumes much less power. Replacing serial memories, the µPort Saver provides all the serial benefits, such as low cost, low power, low voltage, and small package size while releasing I/Os for more important uses. The µPort Saver memory outputs data within 20ns of an active read signal. This is less than the read access time of most hosts and provides “no-wait-state” operation. This prevents bottlenecks on the bus. With rates to 15MHz, the µPort Saver supplies data faster than required by most host read cycle specifications. This eliminates the need for software NOPs. The µPort Saver memories communicate over one line of the data bus using a sequence of standard bus read and write operations. This “bit serial” interface allows the µPort Saver to work well in 8-bit, 16 bit, 32-bit, and 64-bit systems. The X84160/640/128 provide additional data security features through Block Lock and programmable Hardware Write Protection. These allow some or all of the array to be write protected by software command or by hardware. System Configuration, Company ID, calibration information, or other critical data can be secured against unexpected or inadvertent program operations, leaving the remainder of the memory available for the system or user access A Write Protect (WP) pin prevents inadvertent writes to the memory. Xicor EEPROMs are designed and tested for applications requiring extended endurance. Inherent data retention is greater than 100 years. BLOCK DIAGRAM CE I/O H.V. GENERATION TIMING & CONTROL EEPROM COMMAND DECODE AND CONTROL LOGIC X DEC Y DECODE DATA REGISTER WP OE WE ARRAY 16K x 8 P0/CS P1/CLK P2/DI P3/DO System Connection Internal Block Diagram µP µC Ports 8K x 8 2K x 8 Saved DSP ASIC A15 A0 D7 D0 OE WE MPS RISC X84160/640/128 Preliminary Information This X84160/640/128 device has been acquired by IC MICROSYSTEMS from Xicor, Inc. ICmic IC MICROSYSTEMS TM |
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