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5962H9689104VYA Datasheet(PDF) 2 Page - Aeroflex Circuit Technology |
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5962H9689104VYA Datasheet(HTML) 2 Page - Aeroflex Circuit Technology |
2 / 11 page 2 DEVICE OPERATION The UT28F256 has three control inputs: Chip Enable (CE), Program Enable (PE), and Output Enable (OE); fifteen address inputs, A(14:0); and eight bidirectional data lines, DQ(7:0). CE is the device enable input that controls chip selection, active, and standby modes. AssertingCE causes I DD to rise to its active value and decodes the fifteen address inputs to select one of 32,768 words in the memory. PE controls program and read operations. During a read cycle, OE must be asserted to enable the outputs. PIN NAMES Table 1. Device Operation Truth Table 1 Notes: 1. “X” is defined as a “don’t care” condition. 2. Device active; outputs disabled. ABSOLUTE MAXIMUM RATINGS 1 (Referenced to VSS) Notes: 1. Stresses outside the listed absolute maximum ratings may cause permanent damage to the device. This is a stress rating only, and functional operation of the device at these or any other conditions beyond limits indicated in the operational sections of this specification is not recommended. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 2. Test per MIL-STD-883, Method 1012, infinite heat sink. A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 DQ0 DQ1 DQ2 VSS VDD PE A13 A8 A9 A11 OE A10 CE DQ7 DQ6 DQ5 DQ4 DQ3 PIN CONFIGURATION 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 A(14:0) Address CE Chip Enable OE Output Enable PE Program Enable DQ(7:0) Data Input/Data Output OE PE CE I/O MODE MODE X 1 1 Three-state Standby 0 1 0 Data Out Read 1 0 0 Data In Program 1 1 0 Three-state Read 2 SYMBOL PARAMETER LIMITS UNITS V DD DC supply voltage -0.3 to 7.0 V VI/O Voltage on any pin -0.5 to (VDD + 0.5) V TSTG Storage temperature -65 to +150 °C P D Maximum power dissipation 1.5 W TJ Maximum junction temperature +175 °C Θ JC Thermal resistance, junction-to-case 2 3.3 °C/W I I DC input current ±10 mA |
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