| Hualon Manufacturing Corp RAM chip marking |
| HMC |
www.hmc.com.tw |
| HM |
HM - Hualon Manufacturing Corp (HMC) |
| 62 - RAM type |
6 - static CMOS RAM |
| H - |
H - ??? |
| 256 - memory density |
16 - 2kBit x 8
64 - 8kBit x 8
256 - 32kBit x 8 |
| A - die revision |
[none] - first release
A - second generation
B - third generation
C - fourth generation
D - fifth generation |
| B - |
B - ??? |
| 15 - min cycle time |
15 - 15ns
50 - 50ns
60 - 60ns
70 - 70ns
90 - 90ns
120 - 120ns |
| LL - RAS/CAS |
[none] - normal
LL - low power version |
| L - interface |
0 - LVTTL |
| TC - package option |
P - 28pin 600mil plastic DIP
K - 28pin 300mil plastic skinny DIP
M - 28pin 300mil plastic SOP
WM - 28pin 330mil plastic SOP |
| 9714 - date of manufacture |
97 - year of manufacture
14 - week of manufacture |
| D73W2 - Serialization code |
? |
