{"id":6109,"date":"2026-09-04T09:00:00","date_gmt":"2026-09-04T00:00:00","guid":{"rendered":"https:\/\/www.ramxeed.com\/zh-tw\/?post_type=column&#038;p=6109"},"modified":"2026-09-14T11:21:44","modified_gmt":"2026-09-14T02:21:44","slug":"reducing-sram-buffer-with-feram","status":"publish","type":"column","link":"https:\/\/www.ramxeed.com\/zh-tw\/tech-column\/reducing-sram-buffer-with-feram\/","title":{"rendered":"SRAM\u7de9\u885d\u5340\u524a\u6e1b\u65b9\u6cd5\uff1a\u900f\u904eFRAM\u76f4\u63a5\u5beb\u5165\u6700\u4f73\u5316\u8cc7\u6599\u7d50\u69cb"},"content":{"rendered":"\n<p 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class=\"wp-block-paragraph\">\u900f\u904e\u5c07pointer\u76f4\u63a5\u6307\u5411\u6c38\u4e45\u8cc7\u6599\u5340\uff0c\u4e26\u5728\u8a72\u4f4d\u7f6e\u9032\u884c\u8655\u7406\uff0c\u53ef\u6e1b\u5c11\u8cc7\u6599\u8907\u88fd\u6b21\u6578\u3002\u82e5\u9032\u4e00\u6b65\u5c07DMA\u50b3\u8f38\u76ee\u7684\u5730\u8a2d\u5b9a\u70baFRAM\uff0c\u4e5f\u80fd\u964d\u4f4eCPU\u4ecb\u5165\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a2d\u8a08\u6642\uff0c\u9700\u8981\u5b9a\u7fa9\u80fd\u4fdd\u6301\u4e00\u81f4\u6027\u7684\u6700\u5c0f\u55ae\u4f4d\uff0c\u4e26\u898f\u5283\u4e0d\u7559\u4e0b\u4e2d\u9014\u72c0\u614b\u7684\u66f4\u65b0\u9806\u5e8f\u3002zero-copy\u5316\u4e0d\u53ea\u53ef\u63d0\u5347\u901f\u5ea6\uff0c\u4e5f\u80fd\u76f4\u63a5\u964d\u4f4eSRAM\u7684\u5cf0\u503c\u4f7f\u7528\u91cf\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6c38\u4e45\u8cc7\u6599\u7d50\u69cb\u7684\u8a2d\u8a08\u91cd\u9ede<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u82e5\u5c07FRAM\u4f5c\u70ba\u4e3b\u8981\u8cc7\u6599\u7a7a\u9593\u4f7f\u7528\uff0c\u5c31\u5fc5\u9808\u63a1\u7528\u5373\u4f7f\u96fb\u6e90\u4e2d\u65b7\u5f8c\u4e5f\u4e0d\u5bb9\u6613\u7522\u751f\u8cc7\u6599\u4e0d\u4e00\u81f4\u7684\u7d50\u69cb\u3002\u53ef\u4f7f\u7528\u56fa\u5b9a\u9577\u5ea6record\u6216log\u7d50\u69cb\uff0c\u4e26\u63a1\u7528append-only\u65b9\u5f0f\u66f4\u65b0\u8cc7\u6599\uff0c\u4f7f\u8cc7\u6599\u7834\u640d\u5f71\u97ff\u5c40\u90e8\u5316\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728header\u4e2d\u52a0\u5165\u4e16\u4ee3\u7de8\u865f\u8207\u6709\u6548flag\uff0c\u4e26\u4ee5atomic\u65b9\u5f0f\u5207\u63db\u8cc7\u6599\u72c0\u614b\uff0c\u662f\u6709\u6548\u7684\u8a2d\u8a08\u65b9\u6cd5\u3002\u82e5\u8cc7\u6599\u9577\u5ea6\u53ef\u8b8a\uff0c\u5247\u53ef\u900f\u904eindex table\u9032\u884c\u7ba1\u7406\uff0c\u4ee5\u6291\u5236\u788e\u7247\u5316\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u900f\u904e\u9019\u985e\u8a2d\u8a08\uff0c\u5373\u4f7f\u4e0d\u5728SRAM\u4e0a\u4fdd\u7559\u66ab\u6642\u683c\u5f0f\u6574\u7406\u5340\uff0c\u4e5f\u80fd\u76f4\u63a5\u66f4\u65b0FeRAM\u4e2d\u7684\u8cc7\u6599\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6027\u80fd\u3001\u529f\u8017\u8207\u9762\u7a4d\u7684trade-off\u8a55\u4f30<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u524a\u6e1bSRAM\u6709\u52a9\u65bc\u964d\u4f4e\u6676\u7247\u9762\u7a4d\u8207\u5f85\u6a5f\u529f\u8017\uff0c\u4f46\u5982\u679cFRAM\u5b58\u53d6\u983b\u7387\u589e\u52a0\uff0c\u5beb\u5165\u96fb\u6d41\u8207bus\u5360\u7528\u4e5f\u53ef\u80fd\u6210\u70ba\u554f\u984c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u6b64\uff0c\u9700\u8981\u900f\u904e\u5be6\u6e2c\u78ba\u8a8dlatency\u8207\u96fb\u6d41\u6ce2\u5f62\uff0c\u4e26\u91cf\u5316\u5176\u5c0d\u9031\u671f\u4efb\u52d9\u7684\u5f71\u97ff\u3002\u8a2d\u8a08\u6642\u61c9\u6bd4\u8f03\u53d6\u6d88buffer\u5f8c\u6e1b\u5c11\u7684copy\u6642\u9593\uff0c\u4ee5\u53ca\u76f4\u63a5\u5beb\u5165FRAM\u6642\u589e\u52a0\u7684\u7b49\u5f85\u6642\u9593\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5fc5\u8981\u6642\uff0c\u4e5f\u53ef\u4ee5\u4fdd\u7559\u6700\u5c0f\u9650\u5ea6\u7684cache line\u55ae\u4f4dbuffer\u3002\u6700\u7d42\u61c9\u5f9e\u7cfb\u7d71\u6574\u9ad4\u7684\u80fd\u6e90\u6d88\u8017\u8207\u53cd\u61c9\u6642\u9593\uff0c\u5224\u65b7\u6700\u9069\u5408\u7684\u8a2d\u8a08\u5e73\u8861\u9ede\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6210\u529f\u4ee5FRAM\u524a\u6e1bSRAM\u7684\u8a2d\u8a08\u65b9\u6cd5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u82e5\u8981\u5b89\u5168\u5730\u5229\u7528FRAM\u524a\u6e1bSRAM\uff0c\u9700\u8981\u5f9e\u76ee\u6a19buffer\u9078\u5b9a\u3001\u8a55\u4f30\u5230\u9a57\u8b49\uff0c\u5efa\u7acb\u4e00\u5957\u7cfb\u7d71\u5316\u7684\u79fb\u884c\u65b9\u6cd5\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u524a\u6e1b\u76ee\u6a19buffer\u7684\u7279\u5b9a\u8207\u512a\u5148\u9806\u5e8f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u9996\u5148\uff0c\u9700\u8981\u76e4\u9ede\u6240\u6709buffer\u7684\u5927\u5c0f\u3001\u6700\u5927\u4f7f\u7528\u91cf\u8207\u66f4\u65b0\u983b\u7387\uff0c\u4e26\u91cf\u5316\u5b83\u5011\u5c0dSRAM\u5cf0\u503c\u6d88\u8017\u7684\u5f71\u97ff\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u63a5\u8457\u53ef\u4f9d\u7528\u9014\u5206\u985e\uff0c\u4f8b\u5982log\u3001\u901a\u8a0a\u3001cache\u7b49\uff0c\u4e26\u512a\u5148\u6aa2\u8a0e\u8207\u6c38\u4e45\u5316\u76f8\u5bb9\u6027\u9ad8\u7684\u8cc7\u6599\u5340\u57df\uff0c\u4f8b\u5982\u5beb\u5165\u5f8c\u7acb\u5373\u9700\u8981\u4fdd\u5b58\u7684\u8cc7\u6599\u3002<br>\u540c\u6642\uff0c\u4e5f\u9700\u8981\u8a55\u4f30\u5373\u6642\u6027\u9650\u5236\u8207\u6545\u969c\u6642\u7684\u5f71\u97ff\u7a0b\u5ea6\uff0c\u5236\u5b9a\u968e\u6bb5\u6027\u7684\u524a\u6e1b\u8a08\u756b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u900f\u904e\u4ee5\u6578\u503c\u70ba\u57fa\u790e\u8a2d\u5b9a\u512a\u5148\u9806\u5e8f\uff0c\u53ef\u4ee5\u9650\u5236\u9a57\u8b49\u7bc4\u570d\uff0c\u540c\u6642\u78ba\u5be6\u964d\u4f4eSRAM\u4f7f\u7528\u91cf\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5224\u65b7FRAM\u9069\u7528\u6027\u7684\u6280\u8853\u6a19\u6e96<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">FRAM\u662f\u5426\u9069\u7528\uff0c\u4e3b\u8981\u53ef\u5f9e\u5b58\u53d6\u983b\u7387\u3001\u5beb\u5165\u5927\u5c0f\u8207\u5141\u8a31latency\u4f86\u5224\u65b7\u3002\u5373\u4f7f\u662f\u9ad8\u983b\u7387\u66f4\u65b0\uff0cFeRAM\u901a\u5e38\u4e5f\u5177\u5099\u8db3\u5920\u8010\u4e45\u6027\uff0c\u4f46\u82e5bus\u983b\u5bec\u7dca\u5f35\uff0c\u5c31\u9700\u8981\u8003\u616e\u5206\u6563\u5beb\u5165\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u82e5\u96fb\u6e90\u4e2d\u65b7\u6642\u7684\u8cc7\u6599\u4e00\u81f4\u6027\u8981\u6c42\u5f88\u9ad8\uff0c\u53ef\u524d\u63d0\u5c0e\u5165A\/B\u9762double buffering\u7b49\u8a2d\u8a08\u3002\u76f8\u53cd\u5730\uff0c\u82e5\u8cc7\u6599\u4e3b\u8981\u4ee5\u8b80\u53d6\u70ba\u4e3b\uff0c\u4fdd\u7559\u5728SRAM\u4e2d\u4e5f\u53ef\u80fd\u662f\u5408\u7406\u9078\u9805\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b64\u5916\uff0c\u4e5f\u9700\u8981\u78ba\u8a8d\u4f7f\u7528\u6eab\u5ea6\u7bc4\u570d\u3001\u8cc7\u6599\u4fdd\u6301\u5e74\u9650\u7b49\u74b0\u5883\u689d\u4ef6\uff0c\u907f\u514d\u56e0\u5168\u9762\u66ff\u63db\u800c\u5e36\u4f86\u4e0d\u5fc5\u8981\u98a8\u96aa\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u60f3\u78ba\u8a8d\u54ea\u4e00\u6b3e FeRAM \u9069\u5408\u60a8\u7684\u7cfb\u7d71\u8a2d\u8a08\u55ce\uff1f<\/strong><br>\u82e5\u60a8\u6b63\u5728\u8a55\u4f30\u4ecb\u9762\u3001\u5bb9\u91cf\u3001\u5de5\u4f5c\u96fb\u58d3\u3001\u4f7f\u7528\u6eab\u5ea6\u6216\u8cc7\u6599\u4fdd\u5b58\u9700\u6c42\uff0c\u6b61\u8fce\u8207\u6211\u5011\u806f\u7e6b\u3002\u6211\u5011\u53ef\u4f9d\u7167\u60a8\u7684\u7cfb\u7d71\u689d\u4ef6\uff0c\u5354\u52a9\u60a8\u78ba\u8a8d\u9069\u5408\u7684 FeRAM \u7522\u54c1\u8207\u898f\u683c\u3002<\/p>\n\n\n\n<p class=\"has-text-color has-link-color wp-elements-2 wp-block-paragraph\" style=\"color:#d12d7e\">\n  <strong>\n    <a href=\"https:\/\/info.sales.ramxeed.com\/l\/990132\/2025-10-30\/zxjzf\" data-type=\"link\" data-id=\"https:\/\/info.sales.ramxeed.com\/l\/990132\/2025-10-30\/zxjzf\" style=\"text-decoration: underline;\">\n  \u8aee\u8a62 FeRAM \u7522\u54c1\u9078\u578b\n    <\/a>\n  <\/strong>\n<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5be6\u4f5c\u6642\u7684\u8a2d\u8a08\u6aa2\u67e5\u91cd\u9ede<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5be6\u4f5c\u6642\uff0c\u9700\u8981\u78ba\u8a8dlinker\u8a2d\u5b9a\u3001driver\u5ef6\u9072\uff0c\u4ee5\u53ca\u8207interrupt\u4e4b\u9593\u7684\u4e92\u65a5\u63a7\u5236\u3002\u82e5\u5beb\u5165\u904e\u7a0b\u4e2d\u53ef\u80fd\u767c\u751finterrupt\uff0c\u5c31\u5fc5\u9808\u660e\u78ba\u5b9a\u7fa9critical section\uff0c\u907f\u514d\u8cc7\u6599\u7834\u640d\u3002<\/p>\n\n\n\n<p 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