MCM63D736 Datasheet, PDF (1/16 Pages) Freescale Semiconductor, Inc – 128K x 36 Bit Synchronous Dual I/O, Dual Address SRAM

Freescale Semiconductor
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128K x 36 Bit Synchronous
Dual I/O, Dual Address SRAM
MCM63D736
The MCM63D736 is a 4M–bit static random access memory, organized as
128K words of 36 bits. It features common data input and data output buffers and
incorporates input and output registers on–board with high speed SRAM.
The MCM63D736 allows the user to concurrently perform reads, writes, or
pass–through cycles in combination on the two data ports. The two address ports
(AX, AY) determine the read or write locations for their respective data ports
(DQX, DQY).
The synchronous design allows for precise cycle control with the use of an
external single clock (K). All signal pins except output enables (GX, GY) are
registered on the rising edge of clock (K).
The pass–through feature allows data to be passed from one port to the other,
in either direction. The PTX input must be asserted to pass data from port X to
port Y. The PTY will likewise pass data from port Y to port X. A pass–through
operation takes precedence over a read operation.
For the case when AX and AY are the same, certain protocols are followed. If
both ports are read, the reads occur normally. If one port is written and the other
is read, the read from the array will occur before the data is written. If both ports
are written, only the data on DQY will be written to the array.
• Single 3.3 V ±5% Power Supply
• 133 MHz Maximum Clock Frequency
• Throughput of 4.8 Gigabits/Second
• Single Clock Operation
• Self–Timed Write
• Two Bi–Directional Data Buses
• Can be Configured as Separate I/O
• Pass–Through Feature
• Asynchronous Output Enables (GX, GY)
• LVTTL Compatible I/O
• Concurrent Reads and Writes
• 176–Pin TQFP Package
TQ PACKAGE
176 LEAD TQFP
CASE 1101–01
Suggested Applications
— ATM
— Cell/Frame Buffers
— Ethernet Switches
— SNA Switches
— Routers
— Shared Memory
— Cellular Base Stations
— RAID Systems
© Freescale Semiconductor, Inc., 2004. All rights reserved.
REV 4
7/6/00
For More Information On This Product,
Go to: www.freescale.com
MCM63D736
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