GENERAL DESCRIPTION

The K4S640432D is 67,108,864 bits synchronous high data rate Dynamic RAM organized as 4 x 4,194,304 words by 4 bits, fabricated with SAMSUNG¢s high performance CMOS technology. Synchronous design allows precise cycle control with the use of system clock I/O transactions are possible on every clock cycle. Range of operating frequencies, programmable burst length and programmable latencies allow the same device to be useful for a variety of high bandwidth, high performance memory system applications.

FEATURES

• JEDEC standard 3.3V power supply

• LVTTL compatible with multiplexed address

• Four banks operation

• MRS cycle with address key programs

-. CAS latency (2 & 3)

-. Burst length (1, 2, 4, 8 & Full page)

-. Burst type (Sequential & Interleave)

• All inputs are sampled at the positive going edge of the system clock

• Burst read single-bit write operation

• DQM for masking

• Auto & self refresh

• 64ms refresh period (4K cycle)