A***7
发帖数: 290 | 1 我对电路非常小白。
就是DRAM的voltage regulator，如果正常工作输入电压2.5V， peripheral voltage 1
.4v, core voltage 1.0v，
现在我想把输入电压提高到4V，那么peripheral voltage和 core voltage如何变化？
如果大拿能举个特定类型例子，那就太感谢了。 | T******T
发帖数: 3066 | 2 Confused, are you saying the DRAM Voltage Regular input is currently at
2.5v, but its regulated output to the DRAM core = 1.0v and I/O at = 1.4v ?
Is it an embedded or on-board regulator ? How many ? Are the regulators
adjustable or fixed ? Do you have a part # for the regulator or a
datasheet to link ? Most of them have allowable input ranges, we need to
see the datasheet to answer your question. | A***7
发帖数: 290 | 3 I don't have the regulator part # , nor the datasheet, :(.Actually no
informaiton about the regulator is available.
Maybe my question is too general to answer. Here is an example, I am looking
for Micron 512Mb DDR DRAM, MT46V128M4P. Vdd=2.5V, Vcore=1V. If Vdd is
increased to 4 V, how about the Vcore?
Thanks again! | j******e
发帖数: 1424 | 4 MT46V128M4P: VDD & VDDQ are 2.5V +_0.2V, abs max is not exceed 3.6V. core
voltage is regulated inside the chip, you can not control. If you supply 4.
0V to the VDD or VDDQ, it may damage the chip.
looking
【在 A***7 的大作中提到】
: I don't have the regulator part # , nor the datasheet, :(.Actually no
: informaiton about the regulator is available.
: Maybe my question is too general to answer. Here is an example, I am looking
: for Micron 512Mb DDR DRAM, MT46V128M4P. Vdd=2.5V, Vcore=1V. If Vdd is
: increased to 4 V, how about the Vcore?
: Thanks again!
| T******T
发帖数: 3066 | 5 Ok, I see, so you are trying to over-drive the thing much like the over-
clockers do, 4V is too much, gotta be over the margin, like jeamouse's
saying, it may damage your memory chip.
looking
【在 A***7 的大作中提到】
: I don't have the regulator part # , nor the datasheet, :(.Actually no
: informaiton about the regulator is available.
: Maybe my question is too general to answer. Here is an example, I am looking
: for Micron 512Mb DDR DRAM, MT46V128M4P. Vdd=2.5V, Vcore=1V. If Vdd is
: increased to 4 V, how about the Vcore?
: Thanks again!
|
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