A2S56D40CTP sdram equivalent, 256mb ddr sdram.
- Vdd=Vddq=2.5V ± 0.2V power supply for -6,-75. -Vdd=Vddq=2.6V ± 0.1V power supply for -5. - Double data rate architecture ; two data transfers per clock cycle. - Bidirec.
A2S56D20CTP is a 4-bank x 16,777,216-word x 4-bit,
A2S56D30CTP is a 4-bank x 8,388,608-word x 8bit, A2S56D40CTP is a 4-bank x 4,194,304-word x 16bit double data rate synchronous DRAM , with SSTL_2 interface. All control and address signals are refer.
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