For these products, the ICs feature auto Temperature-Compensated Self-Refresh (TCSR) to minimise power consumption at lower ambient temperatures. In addition, their Partial-Array Self-Refresh (PASR) feature reduces power by only refreshing critical data, while a Deep Power Down (DPD) mode provides an ultra-low power state when data retention isn’t required.
Featuring a double data rate four-bit prefetch architecture, the LPDDR2 SDRAMs deliver high-speed operation with clock rates of 400 and 533MHz, and are available in commercial (-30 to 85°C) and industrial (-40 to 85°C) temperature ranges. The devices offer programmable read or write burst lengths of 4, 8, or 16; an 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. The RoHS-compliant ICs are lead (Pb)- and halogen-free.
Alliance Memory offers an extensive line-up of mobile low-power SDRAMs to help designers meet the demand for reduced power consumption in portable electronics, including 64, 128, 256, 512M, and 1GB LPDDR1 SDRAMs and 16GB LPDDR3 SDRAMs. 8GB 256M x 32 LPDDR2 SDRAMs in the 134-ball FBGA package will also be available soon.