전자부품 데이터시트 검색엔진 |
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KM736V989 데이터시트(PDF) 8 Page - Samsung semiconductor |
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KM736V989 데이터시트(HTML) 8 Page - Samsung semiconductor |
8 / 20 page 512Kx36 & 1Mx18 Synchronous SRAM - 8 - Rev 1.0 December 1999 KM718V089 KM736V989 SYNCHRONOUS TRUTH TABLE Notes : 1. X means "Don ′t Care". 2. The rising edge of clock is symbolized by ↑. 3. WRITE = L means Write operation in WRITE TRUTH TABLE. WRITE = H means Read operation in WRITE TRUTH TABLE. 4. Operation finally depends on status of asynchronous input pins(ZZ and OE). CS1 CS2 CS2 ADSP ADSC ADV WRITE CLK ADDRESS ACCESSED OPERATION H X X X L X X ↑ N/A Not Selected L L X L X X X ↑ N/A Not Selected L X H L X X X ↑ N/A Not Selected L L X X L X X ↑ N/A Not Selected L X H X L X X ↑ N/A Not Selected L H L L X X X ↑ External Address Begin Burst Read Cycle L H L H L X L ↑ External Address Begin Burst Write Cycle L H L H L X H ↑ External Address Begin Burst Read Cycle X X X H H L H ↑ Next Address Continue Burst Read Cycle H X X X H L H ↑ Next Address Continue Burst Read Cycle X X X H H L L ↑ Next Address Continue Burst Write Cycle H X X X H L L ↑ Next Address Continue Burst Write Cycle X X X H H H H ↑ Current Address Suspend Burst Read Cycle H X X X H H H ↑ Current Address Suspend Burst Read Cycle X X X H H H L ↑ Current Address Suspend Burst Write Cycle H X X X H H L ↑ Current Address Suspend Burst Write Cycle TRUTH TABLES WRITE TRUTH TABLE(x36) Notes : 1. X means "Don ′t Care". 2. All inputs in this table must meet setup and hold time around the rising edge of CLK( ↑). GW BW WEa WEb WEc WEd OPERATION H H X X X X READ H L H H H H READ H L L H H H WRITE BYTE a H L H L H H WRITE BYTE b H L H H L L WRITE BYTE c and d H L L L L L WRITE ALL BYTEs L X X X X X WRITE ALL BYTEs WRITE TRUTH TABLE(x18) Notes : 1. X means "Don ′t Care". 2. All inputs in this table must meet setup and hold time around the rising edge of CLK( ↑). GW BW WEa WEb OPERATION H H X X READ H L H H READ H L L H WRITE BYTE a H L H L WRITE BYTE b H L L L WRITE ALL BYTEs L X X X WRITE ALL BYTEs |
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