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MCM72BB64SG66 Datasheet(PDF) 6 Page - Motorola, Inc |
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MCM72BB64SG66 Datasheet(HTML) 6 Page - Motorola, Inc |
6 / 14 page MCM72BB32 •MCM72BB64 6 MOTOROLA FAST SRAM SYNCHRONOUS TRUTH TABLE (See Notes 1, 2, and 3) E ADSP ADSC ADV UW or LW K Address Used Operation H L X X X L–H N/A Deselected H X L X X L–H N/A Deselected L L X X X L–H External Address Read Cycle, Begin Burst L H L X L L–H External Address Write Cycle, Begin Burst L H L X H L–H External Address Read Cycle, Begin Burst X H H L L L–H Next Address Write Cycle, Continue Burst X H H L H L–H Next Address Read Cycle, Continue Burst X H H H L L–H Current Address Write Cycle, Suspend Burst X H H H H L–H Current Address Read Cycle, Suspend Burst NOTES: 1. X means Don’t Care. 2. All inputs except G must meet setup and hold times for the low–to–high transition of clock (K). 3. Wait states are inserted by suspending burst. ASYNCHRONOUS TRUTH TABLE (See Notes 1 and 2) Operation G I/O Status Read L Data Out Read H High–Z Write X High–Z — Data In Deselected X High–Z NOTES: 1. X means Don’t Care. 2. For a write operation following a read operation, G must be high before the input data required setup time and held high through the input data hold time. ABSOLUTE MAXIMUM RATINGS (Voltages Referenced to VSS = 0 V) Rating Symbol Value Unit Power Supply Voltage VCC – 0.5 to + 7.0 V Voltage Relative to VSS for Any Pin Except VCC Vin, Vout – 0.5 to VCC + 0.5 V Output Current (per I/O) Iout ± 30 mA Power Dissipation PD 6.0 W Temperature Under Bias Tbias – 10 to + 85 °C Operating Temperature TA 0 to + 70 °C Storage Temperature Tstg – 55 to + 125 °C NOTE: Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded. Functional operation should be restricted to RECOMMENDED OPER- ATING CONDITIONS. Exposure to higher than recommended voltages for extended periods of time could affect device reliability. This device contains circuitry to protect the inputs against damage due to high static volt- ages or electric fields; however, it is advised that normal precautions be taken to avoid application of any voltage higher than maxi- mum rated voltages to this high–impedance circuit. This device contains circuitry that will ensure the output devices are in High–Z at power up. |
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