©Apacer Technology Inc.
2
General Description
Apacer 78.02G50.443 is 128M x 64 Double Data Rate SDRAM high density
memory modules based on first generation of 512Mb DDR SDRAM
respectively.
It consists of 16 pieces 64M x8 bit with 4banks Double Data Rate SDRAMs in
60Ball FBGA packages mounted on a 200pin glass-epoxy substrate.
Decoupling capacitors are mounted on the printed circuit board in parallel for
each DDR SDRAM. This product is Dual In-line Memory Modules and intended
for mounting into 200 pin edge connector sockets.
Synchronous design allows precise cycle control with the use of system clock.
Data I/O transactions are possible on both edges of DQS. Range of operating
frequencies, programmable latencies and burst lengths allow the same device
to be useful for a variety of high bandwidth, high performance memory system
applications.
Ordering Information
Part Number Bandwidth Speed Grade Max Frequency CAS Latency
78.02G50.443 3.2 GB/sec 400 Mbps 200 MHz CL3
Density Organization Component Rank
1GB 128M x 64 64M x8*16 2
Key Parameters
MT/s DDR-266 DDR-266 DDR-333 DDR-400
Grade -CL2 -CL2.5 -CL2.5 -CL3
Unit
tCK (min)
7.5 7.5 6 5
ns
CAS latency
2 2.5 2.5 3
tCK
tRC
9 9 10 11
tCK
tRAS
6 6 7 8
tCK
CL-tRCD-tRP
2-3-3 2.5-3-3 2.5-3-3 3-3-3
tCK
