The A2S56D40CTP by Powerchip Semiconductor is a 256Mb DDR SDRAM. Below is the official datasheet preview.
| Part number | A2S56D40CTP |
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| Manufacturer | Powerchip Semiconductor |
| File Size | 620.59 KB |
| Description | 256Mb DDR SDRAM |
| Datasheet |
 A2S56D40CTP_PowerchipSemiconductor.pdf
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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 referenced to the rising edge of CLK.Input data is registered on both edges of data strob , and output data and data strobe are referenced on both edges of CLK.The A2S56D20/30/40 CTP achieves very high speed clock rate up to 200 MHz .
