MCM63L836A| Datasheet

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MOTOROLA

Freescale Semiconductor, Inc.

SEMICONDUCTOR TECHNICAL DATA

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8M Late Write HSTL
The MCM63L836A/918A is an 8M bit synchronous late write fast static RAM designed to provide high performance in secondary cache and ATM switch, Telecom, and other high speed memory applications. The MCM63L918A (organized as 512K words by 18 bits) and the MCM63L836A (organized as 256K words by 36 bits) are fabricated in Motorola's high performance silicon gate copper CMOS technology. The differential clock (CK) inputs control the timing of read/write operations of the RAM. At the rising edge of CK, all addresses, write enables, and synchronous selects are registered. An internal buffer and special logic enable the memory to accept write data on the rising edge of CK, a cycle after address and control signals. Read data is available at the falling edge of CK. The RAM uses HSTL inputs and outputs. The adjustable input trip point (Vref) and output voltage (VDDQ) gives the system designer greater flexibility in optimizing system performance. The synchronous write and byte enables allow writing to individual bytes
or the entire word. The impedance of the output buffers is programmable, allowing the outputs to match the impedance of the circuit traces which reduces signal reflections. Byte Write Control Single 3.3 V 10% Operation HSTL -- I/O (JEDEC Standard JESD8 6 Class I Compatible) HSTL -- User Selectable Input Trip Point HSTL -- Compatible Programmable Impedance Output Drivers Register to Latch Synchronous Operation Boundary Scan (JTAG) IEEE 1149.1 Compatible Differential Clock Inputs Optional x18 or x36 Organization MCM63L836A / 918A 3.8 = 3.8 ns MCM63L836A / 918A 4.0 = 4.0 ns MCM63L836A / 918A 4.2 = 4.2 ns MCM63L836A / 918A 4.5 = 4.5 ns MCM63L836A / 918A 5.0 = 5.0 ns Sleep Mode Operation (ZZ Pin) 119 Bump, 50 mil (1.27 mm) Pitch, 14 mm x 22 mm Flipped Chip Plastic Ball Grid Array (PBGA) Package

MCM63L836A MCM63L918A

FC PACKAGE PBGA CASE 999D 01

Freescale Semiconductor, Inc...

This document contains information on a new product. Specifications and information herein are subject to change without notice.

8/4/99

Motorola, Inc. 1999 MOTOROLA FAST SRAM

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MCM63L836A MCM63L918A 1

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MCM63L836A DATASHEET