| Fujitsu RAM chip marking |
| F |
www.fujitsu.com |
| MB |
MB - Fujitsu Ltd |
| 81 - ? |
??? |
| V - voltage |
V - 3.3V
L - 3.3V low power
C - ?
[none] - 5.0V |
| 17 - refresh |
18 - 1K refresh
17 - 2K refresh
16 - 4K refresh |
| 40 - bit organization |
256 - 256kBit
40 - 4MBit x 4
80 - 2MBit x8
16 - 1MBit x 16
164 - 1MBit x16 x 4 banks
442 - 4MBit x 4 x 4 banks
842 - 2MBit x 8 x 4 banks |
| 5 - RAM type |
0 - DRAM FastPage
4 - DRAM
5 - DRAM EDO |
| 256 - memory density |
256K - 256KBit
1M - 1MBit
4M - 4MBit |
| 50 - min cycle time |
50 - 50ns
60 - 60ns
70 - 70ns
75 - PC133 (7.5ns)
100 - PC100 222spec (10ns)
102 - PC100 ???spec (10ns)
103 - PC100 322spec (10ns) |
| J - package option |
P - ?
FN - ? |
| A - die revision |
A/B/C ... |
| 9812 - date of manufacture |
98 - year of manufacture
12 - week of manufacture |
| R10 - Serialization code |
? |
