Alliance Memory AS4C256M16D4 & AS4C512M8D4 4GB DDR4 SDRAMs

Alliance Memory AS4C256M16D4 and AS4C512M8D4 4GB DDR4 SDRMs offer low power consumption and fast data transfer rates in 96-ball and 78-ball FBGA packages. These 4GB high-speed SDRAMs reduce operating voltages from 1.5V to 1.2V (±0.06V) to increase battery life in portable electronics. The AS4C256M16D4 and AS4C512M8D4 4GB high-speed CMOS DDR4 SDRAMs come with easy-to-use refresh functions that include auto- or self-refresh. For increased efficiency and performance in desktop computers and servers, the 256Mb x 16-bit AS4C256M16D4 and 512Mb x 8-bit AS4C512M8D4 offer up to 16 memory banks. These 4GB SDRAMs are available in extended commercial (0°C to 95°C) and industrial (-40°C to 95°C) temperature ranges. The 4GB SDRAMs are ideal for use in include portable electronics, desktop computers, servers for industrial, medical, IoT, automotive, gaming, and consumer applications.


  • +1.2V (±0.06V) low power consumption
  • Offered in 96-ball and 78-ball FBGA packages
  • Internally configured as 8 banks x 256Mb x 16-bit and 16 banks x 512Mb x 8-bit
  • 1200MHz and 1333MHz fast clock speeds
  • Extremely high transfer rates of 2400Mbps/pin and 2666Mbps/pin
  • Available temperature ranges:
    • 0°C to 95°C extended commercial
    • -40°C to 95°C industrial
  • Support sequential and interleave burst types with read or write burst lengths of BL8/BC4/BC4 or 8 on the fly
  • Auto pre-charge function provides a self-timed row pre-charge initiated at the end of the burst sequence
  • Easy-to-use refresh functions include auto- or self-refresh
  • JEDEC and RoHS compliant
  • Lead (Pb)-free and halogen-free


  • Portable electronics
  • Desktop computers
  • Industrial
  • Medical
  • IoT
  • Automotive
  • Gaming
  • Consumer applications
Publicado: 2020-04-07 | Actualizado: 2022-03-11