Alliance Memory has expanded its offering of high-speed complementary metal-oxide semiconductor mobile low-power synchronous dynamic random-access memory (SDRAM) devices with new low-power double data rate (LPDDR) 4 devices featuring on-chip error-correcting code memory. For improved performance with higher power efficiency than previous-generation LPDDR3 SDRAMs, the 2 Gb AS4C128M16MD4-062BAN, 4 Gb AS4C256M16MD4-062BAN and AS4C128M32MD4-062BAN, and 8 Gb AS4C256M32MD4-062BAN offer lower power consumption and faster speeds in the 200-ball fine pitch ball grid array package.
With low-voltage operation of 1.1 V/1.8 V, the devices increase battery life in portable electronics for the consumer and industrial markets, including tablets, wearables, handheld gaming consoles, personal 
Source: Alliance Memorynavigation systems and more. Providing increased efficiency for advanced audio and high-resolution video in embedded applications, the LPDDR4 SDRAMs deliver fast clock speeds of 1.6 GHz for extremely high transfer rates of 3.2 Gbps. For automotive applications — including infotainment and advanced driver-assistance systems — the AEC-Q100 qualified devices operate over a temperature range of -40° C to 105° C.
The LPDDR4 SDRAMs are organized as one channel (AS4C128M16MD4-062BAN and AS4C256M16MD4-062BAN) and two channels (AS4C128M32MD4-062BAN and AS4C256M32MD4-062BAN) per device, with individual channels consisting of eight banks of 16 bits. The components offer fully synchronous operation; programmable read and write burst lengths of 16, 32 and on the fly; and selectable output drive strength. An on-chip temperature sensor controls the self-refresh rate.
With minimal die shrinks, Alliance Memory's LPDDR4 SDRAMs provide reliable drop-in, pin-for-pin-compatible replacements for numerous similar solutions in high-bandwidth, high-performance memory system applications — eliminating the need for costly redesigns and part requalification.
Samples and production quantities of the new LPDDR4 SDRAMs are available now, with lead times of eight weeks. Pricing for U.S. delivery starts at $6.00 per piece for 2 Gb devices; $12 per piece for 4 Gb devices; and $16 per piece for 8 Gb devices.
