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liangziyue efb7bb38fe docs(tang): note VCC 1.0 V requirement for B-version 138K SSRAM
Per GOWIN AE: a B-version 138K FPGA can use SSRAM only when VCC = 1.0 V is selected and the core voltage is raised from 0.9 V to 1.0 V in hardware.

Add a [2] footnote to the 138K / 138K Pro SOM tables and the home-page comparison table, keep [1] translated, and mark [1] as the default (Device Version C only).
2026-11-05 10:57:48 +08:00

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<!-- 修改后保存一下 include 这个文件的 html 模板(比如home.html)就会渲染 -->
<div class="w-full flex flex-col justify-center items-center">
<h2 class="text-2xl font-bold my-8 block_simple">{{_('Tang FPGA 系列')}}</h2>
<div class="cards">
<!-- cards -->
<div class="card" v-for="item in data_tang.cards">
<div class="img_wrapper">
<img class="card_img" :src="item.img" />
</div>
<h3 class="card_title" class="text-lg">{[item.title]}</h3>
<div class="card_brief">{[item.brief]}</div>
<div class="card_btns">
<a
v-for="btn in item.btns"
:href="btn.link"
:target="btn.new_tab ? '_blank' : '_self'"
>{[btn.label]}</a
>
</div>
</div>
<!-- cards end -->
</div>
<h3 class="text-2xl font-bold my-8">{{_('Tang 系列板卡参数对比')}}</h3>
<div class="w-full my-8 overflow-auto px-2">
<div class="table_wrapper">
<!-- a table to compare upper products' parameters -->
<table>
<thead>
<tr>
<th>{{_('参数')}}</th>
<th>Mega 138K Pro</th>
<th>Mega 138K</th>
<th>Mega 60K</th>
<th>Primer 25K</th>
<th>Primer 20K</th>
<th>Primer 15K</th>
<th>Nano 20K</th>
<th>Nano 9K</th>
<th>Nano 4K</th>
</tr>
</thead>
<tbody>
<tr>
<td>{{_('芯片')}}</td>
<td>GW5AST-138B/C</td>
<td>GW5AST-138B/C</td>
<td>GW5AT-60B</td>
<td>GW5A-25A</td>
<td>GW2A-18C</td>
<td>GW5ART-15A</td>
<td>GW2AR-18C</td>
<td>GW1NR-9C</td>
<td>GW1NSR-4C</td>
</tr>
<tr>
<td>{{_('查找表(LUT)')}}</td>
<td>138240</td>
<td>138240</td>
<td>59904</td>
<td>23040</td>
<td>20736</td>
<td>15120</td>
<td>20736</td>
<td>8640</td>
<td>4608</td>
</tr>
<tr>
<td>{{_('寄存器(FF)')}}</td>
<td>138240</td>
<td>138240</td>
<td>59904</td>
<td>23040</td>
<td>15552</td>
<td>15120</td>
<td>15552</td>
<td>6480</td>
<td>4608</td>
</tr>
<tr>
<td>SSRAM(Kbits)</td>
<td><s>1080</s><sup>[1][2]</sup></td>
<td><s>1080</s><sup>[1][2]</sup></td>
<td>468</td>
<td>180</td>
<td>41</td>
<td>118</td>
<td>41</td>
<td>17</td>
<td>-</td>
</tr>
<tr>
<td>BSRAM(Kbits)</td>
<td>6120</td>
<td>6120</td>
<td>2124</td>
<td>1008</td>
<td>828</td>
<td>630</td>
<td>828</td>
<td>468</td>
<td>180</td>
</tr>
<tr>
<td nowrap="nowrap"> RAM </td>
<td nowrap="nowrap">{{_('板载_fpga')}} 4Gb DDR3 SDRAM * 2</td>
<td nowrap="nowrap">{{_('板载_fpga')}} 4Gb DDR3 SDRAM * 2</td>
<td nowrap="nowrap">{{_('板载_fpga')}} 4Gb DDR3 SDRAM * 1</td>
<td nowrap="nowrap">-</td>
<td nowrap="nowrap">{{_('板载_fpga')}} 1Gb DDR3 SDRAM</td>
<td nowrap="nowrap">{{_('内含')}} 64Mb PSRAM</td>
<td nowrap="nowrap">{{_('内含')}} 64Mb SDR SDRAM</td>
<td nowrap="nowrap">{{_('内含')}} 64Mb PSRAM</td>
<td nowrap="nowrap">{{_('内含')}} 64Mb HyperRAM</td>
</tr>
<tr>
<td nowrap="nowrap">{{_('内嵌处理器')}}</td>
<td nowrap="nowrap">RiscV AE350_SOC</td>
<td nowrap="nowrap">RiscV AE350_SOC</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>Cortex-M3</td>
</tr>
<tr>
<td nowrap="nowrap">{{_('储存')}}</td>
<td nowrap="nowrap">{{_('板载_fpga')}} 128Mb Flash * 2</td>
<td nowrap="nowrap">{{_('板载_fpga')}} 128Mb Flash</td>
<td nowrap="nowrap">{{_('板载_fpga')}} 64Mb Flash</td>
<td nowrap="nowrap">{{_('板载_fpga')}} 64Mb Flash</td>
<td nowrap="nowrap">{{_('板载_fpga')}} 64Mb Flash</td>
<td nowrap="nowrap">{{_('板载_fpga')}} 64Mb Flash</td>
<td nowrap="nowrap">{{_('板载_fpga')}} 64Mb Flash</td>
<td nowrap="nowrap">{{_('内含')}} 608Kb Flash<br>{{_('板载_fpga')}} 32Mb Flash</td>
<td nowrap="nowrap">{{_('内含')}} 256Kb Flash<br>{{_('板载_fpga')}} 32Mb Flash</td>
</tr>
<tr>
<td>{{_('其他特点')}}</td>
<td nowrap="nowrap">{{_('内含 12.5G Transceivers')}}<br>{{_('支持 PCIe 3.0 通信')}}<br>{{_('支持 SFP+ 数据传输')}}</td>
<td nowrap="nowrap">{{_('内含 8.8G Transceivers')}}<br>{{_('支持 PCIe 3.0 通信')}}<br>{{_('支持 USB3 数据传输')}}</td>
<td nowrap="nowrap">{{_('内含 8.8G Transceivers')}}<br>{{_('支持 MIPI IO + 软 D-PHY RX/TX')}}<br>{{_('支持 PCIe 2.0 通信')}}<br>{{_('支持 USB3 数据传输')}}</td>
<td nowrap="nowrap">{{_('内含 2.5G MIPI DPHY RX/TX')}}<br>{{_('支持 PMOD, 64MByte SDRAM模块')}}<br>{{_('支持 USB手柄')}}</td>
<td nowrap="nowrap">{{_('丰富外设,HDMI/以太网/USB')}}</td>
<td nowrap="nowrap">{{_('内含 8.8G Transceivers')}}<br>{{_('内含 2.5G MIPI D-PHY RX/TX')}}<br>{{_('支持 PCIe 2.0 通信')}}<br>{{_('M.2 外形兼容')}}</td>
<td nowrap="nowrap">{{_('for RetroGame ~')}}</td>
<td nowrap="nowrap">{{_('for RISCV softcore')}}</td>
<td nowrap="nowrap">{{_('GOAI~')}}</td>
</tr>
</tbody>
</table>
</div>
<p style="font-size:0.8rem;opacity:0.7;margin-top:0.75rem;">
{{_('[1] 默认仅 Device Version C 可用。由于 Device Version B 的 Silicon 缺陷,GOWIN 已禁用 B 版本 138K 的 SSRAM,该问题在 C 版本中修复(GOWIN 自 IDE 1.9.10.x 起正式禁用)。')}}<br>
{{_('[2] 若使用 Device Version B 的 138K FPGA 器件,必须选择 VCC = 1.0 V,并将核心电压从 0.9 V 实际提升到 1.0 V,才能使用 SSRAM。')}}
</p>
</div>
</div>
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