器件名称:
AK5361024W
功能描述:
524,288 Word by 36 Bit CMOS Dynamic Random Access Memory
文件大小:
116.26KB 共2页
简 介:
Accutek Microcircuit Corporation DESCRIPTION The Accutek AK536512W high density memory module is a CMOS dynamic RAM organized in 512K x 36 bit words. The module consists of sixteen standard 256K x 4 DRAMs in plastic SOJ packages and eight 256K x 1 DRAMs in PLCC packages. The assembly has 12 drams mounted on each side of a printed circuit board in a 72 pad leadless SIM configuration. This configuration allows socket-mounting of large quantities of memory in applications where high density and ease of inserting additional memory are important. The operation of the AK536512 is identical to sixteen 256K x 4 plus eight 256K x 1 DRAMs. There are four CAS lines and four RAS lines. On each bank of 256K x 36, independent byte control is accomplished by four CAS lines. Each separate CAS line controls four 256K x 4 DRAMs and two 256K x 1 DRAMs with data in tied to data out to form a 9 bit byte. Two banks of 36 bits are controlled by the two pairs of RAS lines. An eighteen bit data path can be produced by connecting DQ0 to DQ18, DQ1 to DQ19, etc. and alternately strobing RAS0 with RAS1 and RAS2 with RAS3. AK536512W 524,288 Word by 36 Bit CMOS Dynamic Random Access Memory + + FEATURES 524,288 x 36 bit organization 72 pad Single In-Line Module Multiple CAS and RAS lines allow x18 or x36 bit widths CAS-before-RAS refresh Operating free air temperature 0oC to 70oC Single 5 Volt Power Supply Power 5.41 Watt Max Active (70nS) 4.75 Watt Max Active (80 nS) 4.09 Watt Max Active (100 n……
