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M27C405-70B1TR 数据表(PDF) 3 Page - STMicroelectronics |
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M27C405-70B1TR 数据表(HTML) 3 Page - STMicroelectronics |
3 / 15 page Mode E G A9 VPP Q0 - Q7 Read VIL VIL XVCC or VSS Data Out Output Disable VIL VIH XVCC or VSS Hi-Z Program VIL Pulse VIH XVPP Data In Verify VIH VIL XVPP Data Out Program Inhibit VIH VIH XVPP Hi-Z Standby VIH XX VCC or VSS Hi-Z Electronic Signature VIL VIL VID VCC Codes Note:X = VIH or VIL,VID = 12V ± 0.5V Table 3. Operating Modes Identifier A0 Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0 Hex Data Manufacturer’s Code VIL 001 0000 0 20h Device Code VIH 101 1010 0 B4h Table 4. Electronic Signature Two Line Output Control Because OTP EPROMs are usually used in larger memory arrays, this product features a 2 line con- trol function which accommodates the use of mul- tiple memory connection. The two line control function allows: a. the lowest possible memory power dissipation, b. complete assurance that output bus contention will not occur. For the most efficient use of thesetwo control lines, E should be decoded and used as the primary device selecting function, while G should be made a common connection to all devices in the array and connected to the READ line from the system control bus. This ensures that all deselected mem- ory devices are in their low power standby mode and that the output pins are only active when data is required from a particular memory device. Symbol Parameter Value Unit TA Ambient Operating Temperature (3) –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 STMicroelectronics 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. 3. Depends on range. Table 2. Absolute Maximum Ratings (1) 3/15 M27C405 |
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类似说明 - M27C405-70B1TR |
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