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| Monday, September 06, 2010 |
DRAM? SDRAM ?
 Memory FAQ Topics
| DRAM? SDRAM ? |
| Q. |
Are PC133 speed-tested SDRAMs backward compatible with PC100? |
| A. |
Yes. The AC timing specifications on a PC133 device are tested to allow a system bus to run at 133 MHz.
The PC100 and PC66 timing specifications are more relaxed on these timings.
Majority of PC133 chips should work at PC100 and PC66. In fact, a -75 device is specified for PC100 timings using CAS latency = 2.
Please refer manufacturer data sheet for AC timing table in the appropriate data sheet tCK at CL = 2. |
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