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| Fact Sheet Freescale Semiconductor, Inc. Order this document by ZBTFACT/D MOTOROLA ZERO BUS TURNAROUNDr Product Description Freescale Semiconductor, Inc... FAST STATIC RAMS FOR THE COMMUNICATIONS MARKET The ZBT(R) RAM is a synchronous fast static RAM designed to provide 100% bus utilization. The ZBT RAM eliminates dead bus cycles during back to back read/write and write/read cycles. These devices allow efficient bus usage in high performance systems allowing maximum bus throughput for a given system topology. The 4M-bit ZBT RAM is available in 128K x 36 and 256K x 18 configurations and comes in both pipeline and flow through versions. A new 8M-bit version will be available in 256K x 36 and 512K x 18 configurations. Simplified burst logic allows the ZBT RAM to perform well in burst applications. The pinout is also similar to that of BurstRAMs, which simplifies the integration of ZBT parts into existing burst sockets. Address, data, and control inputs are all synchronous to the clock input with the exception of the output enable (G) and linear burst order (LBO) signals. Write cycles are internally self timed and are initiated by the rising edge of the clock (CK) input. This feature eliminates complex off chip write pulse generation and provides increased timing flexibility for incoming signals. For read cycles, pipelined ZBT RAM output data is temporarily stored by an edge triggered output register and then released to the output buffers at the next rising edge of clock (CK). Features * * * * * Single 3.3 V and 2.5 V Power Supplies Selectable Burst Order (Linear or Interleaved) Internally Self Timed Write Byte Write Control ADV Controlled Burst Suggested Applications * * * * * Switch/Hub Shared Fabric and Router Tables Network Interface Cards (NIC) LAN and WAN Switches Networking Computer Gigabit Switching Continued on back REV 6 10/26/99 For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. Available Products Description Part Number MCM63Z736 Config uration 128K x 36 VDD VDDQ Speed 143 / 133 / 100 MHz 10 / 11 / 15 ns Package Comments Pipelined Flow Through MCM63Z737 4 4M MCM63Z818 256K x 18 MCM63Z819 3.3 33V N/A 100 TQFP 143 / 133 / 100 MHz 10 / 11 / 15 ns Pipelined Flow Through New Products (Samples 4Q99) Description Part Number MCM63Z836 Config uration VDD VDDQ Speed 7 / 8 / 8.5 ns Latency Package Comments Freescale Semiconductor, Inc... 256K x 36 MCM63Z834 3.3 33V MCM63Z918 512K x 18 MCM63Z916 8M MCM64Z836 256K x 36 MCM64Z834 2.5 25V MCM64Z918 512K x 18 MCM64Z916 10 / 11 / 15 ns Latency 143 / 133 / 100 MHz 128K x 36 MCM64Z737K 4 4M MCM64Z818K 256K x 18 MCM64Z819K 10 / 11 / 15 ns Flow Through 2.5 25V 2.5 25V 143 / 133 / 100 MHz 10 / 11 / 15 ns 100 TQFP Pipelined Flow Through Pipelined 2.5 25V 7 / 8 / 8.5 ns Latency 10 / 11 / 15 ns Latency 7 / 8 / 8.5 ns Latency 10 / 11 / 15 ns Latency 100 TQFP Q 119 PBGA Flow Through / g Pipelined 2.5 / 3.3 V 10 / 11 / 15 ns Latency 7 / 8 / 8.5 ns Latency MCM64Z736K Contact Information * Motorola offers data sheets, application notes and models for Fast Static RAM products. In addition, more information is provided for these products at: * For all other inquiries about Motorola products, please contact the Motorola Customer Response Center: http://motorola.com/fastsrams Phone: 800 521 6274 Email: crc@crc.email.sps.mot.com (c) Motorola, Inc. 1999. Motorola reserves the right to make changes without further notice to any products herein. Motorola and are registered trademarks of Motorola, Inc. ZBT and Zero Bus Turnaround are trademarks of Integrated Device Technology, Inc., and the On This supported by Micron Technology, Inc. and Motorola, Inc. For More Information architecture is Product, Go to: www.freescale.com |
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