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M27C64A-15F1X 데이터시트(PDF) 2 Page - STMicroelectronics |
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2 / 11 page Q2 VSS A3 A0 Q0 Q1 A2 A1 G Q5 A10 E Q3 A11 Q7 Q6 Q4 NC P A12 A4 VPP VCC A7 AI00835 M27C64A 8 1 2 3 4 5 6 7 9 10 11 12 13 14 20 19 18 17 16 15 A6 A5 A9 A8 28 27 26 25 24 23 22 21 Figure 2A. DIP Pin Connections Warning: NC = Not Connected AI00836 A8 A10 17 A0 NC Q0 A6 A3 A2 A1 A5 A4 9 A9 1 A11 Q6 Q7 32 M27C64A NC G E 25 Figure 2B. LCC Pin Connections Warning: NC = Not Connected, DU = Don’t Use Symbol Parameter Value Unit TA Ambient Operating Temperature –40 to 125 °C TBIAS Temperature Under Bias –50 to 125 °C TSTG Storage Temperature –65 to 150 °C VIO (2) Input or Output Voltages (except A9) –2 to 7 V VCC Supply Voltage –2 to 7 V VA9 (2) A9 Voltage –2 to 13.5 V VPP Program Supply Voltage –2 to 14 V Notes: 1. Except for the rating ”Operating Temperature Range”, stresses above those listed in the Table ”Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the SGS-THOMSON SURE Program and other relevant quality documents. 2. Minimum DC voltage on Input or Output is –0.5V with possible undershoot to –2.0V for a period less than 20ns. Maximum DC voltage on Output is VCC +0.5V with possible overshoot to VCC +2V for a period less than 20ns. Table 2. Absolute Maximum Ratings (1) DEVICE OPERATION The modes of operation of the M27C64A are listed in the Operating Modes table. A single 5V power supply is required in the read mode. All inputs are TTL levels except for VPP and 12V on A9 for Elec- tronic Signature. Read Mode The M27C64A has two control functions, both of which must be logically active in order to obtain data at the outputs. Chip Enable (E) is the power control and should be used for device selection. Output Enable (G) is the output control and should 2/11 M27C64A |
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