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CAT28C256LA12 Datasheet(PDF) 4 Page - ON Semiconductor |
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CAT28C256LA12 Datasheet(HTML) 4 Page - ON Semiconductor |
4 / 14 page CAT28C256 http://onsemi.com 4 Table 4. MODE SELECTION Mode CE WE OE I/O Power Read L H L DOUT ACTIVE Byte Write (WE Controlled) L H DIN ACTIVE Byte Write (CE Controlled) L H DIN ACTIVE Standby and Write Inhibit H X X High−Z STANDBY Read and Write Inhibit X H H High−Z ACTIVE Table 5. CAPACITANCE (TA = 25°C, f = 1.0 MHz, VCC = 5 V) Symbol Test Max Conditions Units CI/O (Note 7) Input/Output Capacitance 10 VI/O = 0 V pF CIN (Note 7) Input Capacitance 6 VIN = 0 V pF 7. This parameter is tested initially and after a design or process change that affects the parameter. Table 6. A.C. CHARACTERISTICS, READ CYCLE (VCC = 5 V ±10%, unless otherwise specified.) Symbol Parameter 28C256−12 28C256−15 Units Min Max Min Max tRC Read Cycle Time 120 150 ns tCE CE Access Time 120 150 ns tAA Address Access Time 120 150 ns tOE OE Access Time 50 70 ns tLZ (Note 8) CE Low to Active Output 0 0 ns tOLZ (Note 8) OE Low to Active Output 0 0 ns tHZ (Notes 8, 9) CE High to High−Z Output 50 50 ns tOHZ (Notes 8, 9) OE High to High−Z Output 50 50 ns tOH (Note 8) Output Hold from Address Change 0 0 ns 8. This parameter is tested initially and after a design or process change that affects the parameter. 9. Output floating (High−Z) is defined as the state when the external data line is no longer driven by the output buffer. |
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