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IS42/45R86400D/16320D/32160D IS42/45S86400D/16320D/32160D
16Mx32, 32Mx16, 64Mx8 MAY 2015 512Mb SDRAM
device OVERVIEW
FEATURES
• Clock frequency: 200, 166, 143 MHz • Fully synchronous; all signals referenced to a
positive clock edge • Internal bank for hiding row access/precharge • Power supply: Vdd/Vddq = 2.3V-3.6V
IS42/45SxxxxxD - Vdd/Vddq = 3.3V IS42/45RxxxxxD - Vdd/Vddq = 2.5 • LVTTL interface • Programmable burst length – (1, 2, 4, 8, full page) • Programmable burst sequence: Sequential/Interleave
ISSI's 512Mb Synchronous DRAM achieves high-speed
data transfer using pipeline architecture. All inputs and outputs signals refer to the rising edge of the clock input. The 512Mb SDRAM is organized as follows.