DP8421AVX-25

DP8422AV-25 Description  
The Texas Instruments DP8422AV-25 is a random access dynamic RAM with two access ports to simplify dual access.
The DP8422AV-25 can give a low cost single chip interface between dynamic RAM and DSP and all 8, 16, and 32 bit systems.   DP8422AV-25
Features  
• On chip high precision delay line to guarantee critical DRAM access timing parameters
• microCMOS process for low power
• High capacitance drivers for RAS, CAS, WE and DRAM address on chip
• On chip support for nibble, page and static column DRAMs
• Byte enable signals on chip allow byte writing in a word size up to 32 bits with no external logic
• Selection of controller speeds: 20 MHz and 25 MHz
• On board Port A/Port B (DP8422A only)/refresh arbitration logic
• Direct interface to all major microprocessors (application notes available)
• 4 RAS and 4 CAS drivers (the RAS and CAS configuration is programmable)   DP8422AV-25 Applications  
• Mobile Devices
• Computers
• Servers