在漫长的历史中，主要粮食品种随着气候变迁、区域往来的变化以及工程技术的演进而变化。农耕文明之前，食物经由采集捕猎获得，富含淀粉的食物，包括植物的种子、块茎根茎权且被作为主食。然而觅食存在巨大的不确定性，人类的食物多样，难以做主食副食之区分。即便在农耕文明的早期，先民的食物来源仍以采集为主，栽培为辅。据考古遗存，中国先民种植的粮食作物，北方以粟和黍为代表，南方则以稻为主，局部地区有大小麦和豆类种植，另有地区以块根块茎植物为主。

Manufacturer: GSI Technology

Product Category: SRAM

RoHS: Details

Memory Size: 72 Mbit

Organization: 2 M x 36

Maximum Clock Frequency: 450 MHz

Interface Type: Parallel

Supply Voltage - Max: 1.9 V

Supply Voltage - Min: 1.7 V

Supply Current - Max: 1.42 A

Minimum Operating Temperature: - 40 C

Maximum Operating Temperature: + 85 C

Mounting Style: SMD/SMT

Package / Case: BGA-165

Brand: GSI Technology

Memory Type: QDR

Product Type: SRAM

Series: GS8662QT38CGD

15

Subcategory: Memory & Data Storage

Tradename: SigmaQuad-II+

Type: SigmaQuad-II+ B2

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• GS8662QT38CGD