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#1 2019-11-30 06:55:23

LightElf
会员
注册时间: 2019-11-30
累计积分: 4

MT7628DAN data?

Hi all!
I am looking for MT7628DAN datasheet/manual/schematic/pinout/etc. Any information can help.
Thanks!

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#2 2019-11-30 08:08:01

win32prog
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注册时间: 2019-11-28
累计积分: 71

Re: MT7628DAN data?

这些资料我觉得 widora.io 应该有.

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#3 2019-11-30 09:22:53

arychen
会员
注册时间: 2019-04-06
累计积分: 55

Re: MT7628DAN data?

DAN的集成了ddr,我也在找这个。

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#4 2019-11-30 09:29:27

超级萌新
会员
注册时间: 2018-05-04
累计积分: 343

Re: MT7628DAN data?

买个MT7628DAN开发板,啥都有了,哈哈哈哈哈哈

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#5 2019-11-30 13:31:12

mango
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注册时间: 2017-12-02
累计积分: 415

Re: MT7628DAN data?

7628DAN没有单独的手册,楼主需要参考7628AN或7688AN的datasheet:
数据手册 https://widora.io/_media/zh/mt7628_datasheet_full.pdf
联发科私有WiFi驱动编程手册 https://widora.io/_media/mtk_wi-fi_softap_software_programming_guide_v4.6.pdf 

原理图中DDR参考7688K的,就是相比7688A删掉DDR颗粒电路,务必保留DDR_VREF电路和DDR_VCC的去藕电容。

有一点要提醒下:7688DAN(内置64M) 价格,超过了 7688AN + 128MB工业DDR2颗粒 之和。

最近编辑记录 mango (2019-11-30 13:32:15)

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#6 2019-11-30 16:15:21

LightElf
会员
注册时间: 2019-11-30
累计积分: 4

Re: MT7628DAN data?

mango, great thanks for reply.
Some more questions:
What is the value of DDR_VCC? Is it 1.8V as usual for DDR2?
Is some termination needed for address/data pins or I can just leave it unconnected?
What is operating temperature range for MT7628DAN? Is it industrial?
For the number of reasons 7688AN+DDR2 chip is not a good option for my purposes.

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#7 2019-11-30 17:31:16

mango
会员
注册时间: 2017-12-02
累计积分: 415

Re: MT7628DAN data?

LightElf 说:

mango, great thanks for reply.
Some more questions:
What is the value of DDR_VCC? Is it 1.8V as usual for DDR2?
Is some termination needed for address/data pins or I can just leave it unconnected?
What is operating temperature range for MT7628DAN? Is it industrial?
For the number of reasons 7688AN+DDR2 chip is not a good option for my purposes.

Yes,1.8V, just use 7688 LDO(in chip) power it.
no need any termination ,just leave it float.
Ambient temperature: -20 ~ +55 ℃
MediaTek's agent said that the chip shipment is not large, so the price is not very satisfactory.

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#8 2019-12-01 17:46:17

LightElf
会员
注册时间: 2019-11-30
累计积分: 4

Re: MT7628DAN data?

mango 说:

Yes,1.8V, just use 7688 LDO(in chip) power it.
no need any termination ,just leave it float.

Thanks! Seems like I got enough information to start my design. smile

mango 说:

Ambient temperature: -20 ~ +55 ℃

Generally speaking, this is not so bad.

mango 说:

MediaTek's agent said that the chip shipment is not large, so the price is not very satisfactory.

Yes, MT7628/7688 slightly outdated now, 1000Mbit LAN is a requirement now for most applications. I don't speak for WiFi,
as it "no-no" for industrial usage.

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