Memory Module Specification
KVR266X64C25/512
DDR266 SDRAM 184-Pin
Dual In-Line Memory Module (DIMM)
DESCRIPTION:
This document describes ValueRAM's 64M x 64-bit (512MB), CAS Latency 2.5 SDRAM
(Synchronous DRAM) DDR266 memory module. The components on this module include
sixteen 32M x 8-bit (8M x 8-bit x 4 Bank / 133MHz, 7.5ns, CL2.5 components) SDRAM
in TSOP packages. This 184-pin DIMM uses gold contact fingers and requires +2.5V. The
electrical and mechanical specifications are as follows:
FEATURES:
Clock Cycle Time (tCK)
Row Cycle Time (t
RC
)
Refresh Row Cycle Time (tRFC)
Row Active Time (tRAS)
Single Power Supply of
Power
UL Rating
7.5ns (min.) / 15ns (max.)
65ns (min.)
75ns (min.)
45ns (min.) / 12,000ns (max.)
+2.5V (+/- .25V)
4.400 W (operating)
94 V - 0
1.250
(31.75)
(17.80)
0.700
0.393
(10.00)
0.000
(00.00)
1
Units : Inches (Millimeters)
(2.50 )
0.26
(6.62)
0.100
0.250
(6.350)
0.157
(4.00)
0.1496
(3.80)
0.039
±
0.002
(1.000
±
0.050)
0.0787
(2.00)
0.0078 ±0.006
(0.20
±0.15)
0.050
(1.270)
0.1575
(4.00)
0.118
(3.00)
2.175
0.071
(1.80)
Figure 1: KVR266X64C25/512 184-Pin DDR SDRAM Module
Part No. VALUERAM0121-001.A00
03/16/01
5.250
(133.35)
0.000
(00.00)
2.886
(73.30)
Embedded System
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