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74F764-1

Part Number	74F764-1
Manufacturer	Philips
Description	DRAM dual-ported controllers
Published	May 28, 2005
Detailed Description	INTEGRATED CIRCUITS 74F764-1/74F765-1 DRAM dual-ported controllers Product specification IC15 Data Handbook 1992 Aug 10...
Datasheet	74F764-1 PDF File

Overview

INTEGRATED CIRCUITS 74F764-1/74F765-1 DRAM dual-ported controllers Product specification IC15 Data Handbook 1992 Aug 10 Philips Semiconductors Philips Semiconductors Product specification DRAM dual-ported controllers 74F764-1/74F765-1 FEATURES RAM • Allows two microprocessors to access the same bank of dynamic • Performs arbitration, signal timing, address multiplexing and refresh DESCRIPTION The 74F764-1/765-1 DRAM Dual-ported Controller is a high-speed synchronous dual-port arbiter and timing generator that allows two microprocessors, microcontrollers, or any other memory accessing device to share the same block of DRAM.
The device performs arbitration, signal timing, address multiplexing, and refresh address generation, replacing up to 25 discrete devices.
• 9 Address output pins allow direct control of up to 256K dynamic RAMs • External address multiplexing enables control of 1Mbit (or greater) dynamic RAMs 74F764-1 vs.
74F765-1 The 74F764-1, though functionally and pin-to-pin compatible with the 74F765-1, differs from the later in that it has an on-chip address input latch.
This is useful in systems that have unlatched or multiplexed address and data bus.
The specialized outputs eliminate the need for signal terminations in essentially all applications.
Both devices are available in 40-pin plastic DIP or 44-pin PLCC with pinouts designed to allow convenient placement of microprocessors, DRAMs, and other support chips.
• Separate refresh clock allows adjustable refresh timing • 74F764-1 has an on-chip 18-bit address input latch • 74F764-1/765-1 allow control of dynamic RAMs with row access times down to 40ns • 74F764-1/765-1 output drivers designed for first reflected wave switching ORDERING INFORMATION DESCRIPTION 40-Pin Plastic Dual In-line Package 44-Pin Plastic Leaded Chip Carrier COMMERCIAL RANGE VCC = 5V±10%, Tamb = 0°C to 70°C 74F764-1N, 74F765-1N 74F764-1A, 74F765-1A DRAWING NUMBER SOT129–1 SOT187–2 PIN CONFIGURATIONS N Package A1 A10 A2 ...

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74F764-1 DRAM dual-ported controllers - Philips

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