256K x 18 Bit Pipelined BurstRAM Synchronous Fast Static RAM

The MCM69P819 is a 4M bit synchronous fast static RAM designed to provide a burstable, high performance, secondary cache for the PowerPC? and other high performance microprocessors. It is organized as 256K words of 18 bits each. This device integrates input registers, an output register, a 2–bit address counter, and high speed SRAM onto a single monolithic circuit for reduced parts count in cache data RAM applications. Synchronous design allows precise cycle control with the use of an external clock (K).

The MCM69P819 operates from a 3.3 V core power supply and all outputs operate on a 2.5 or 3.3 V power supply. All inputs and outputs are JEDEC standard JESD8–5 compatible.

? MCM69P819–3.5: 3.5 ns Access/6 ns Cycle (166 MHz)

MCM69P819–3.8: 3.8 ns Access/6.7 ns Cycle (150 MHz)

MCM69P819–4: 4 ns Access/7.5 ns Cycle (133 MHz)

? 3.3 V + 10, – 5 Core Power Supply, 2.5 V or 3.3 V I/O Supply

? ADSP, ADSC, and ADV Burst Control Pins

? Selectable Burst Sequencing Order (Linear/Interleaved)

? Single–Cycle Deselect Timing

? Internally Self–Timed Write Cycle

? Byte Write and Global Write Control

? PB1 Version 2.0 Compatible

? JEDEC Standard 119–Pin PBGA and 100–Pin TQFP Packages