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M41ST84W 数据表(PDF) 22 Page - STMicroelectronics |
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M41ST84W 数据表(HTML) 22 Page - STMicroelectronics |
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22 / 29 page ![]() M41ST84W 22/29 Table 7. trec Definitions Note: 1. Default Setting Table 8. Default Values Note: 1. WDS, BMB0-BMB4, RB0, RB1. 2. State of other control bits undefined. 3. UC = Unchanged MAXIMUM RATING Stressing the device above the rating listed in the “Absolute Maximum Ratings” table 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 indicat- ed in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rat- ing conditions for extended periods may affect de- vice reliability. Refer also to the STMicroelectronics SURE Program and other rel- evant quality documents. Table 9. Absolute Maximum Ratings Note: 1. For SO package, standard (SnPb) lead finish: Reflow at peak temperature of 225°C (total thermal budget not to exceed 180°C for between 90 to 150 seconds). 2. For SO package, Lead-free (Pb-free) lead finish: Reflow at peak temperature of 260°C (total thermal budget not to exceed 245°C for greater than 30 seconds). CAUTION: Negative undershoots below –0.3V are not allowed on any pin while in the Battery Back-up mode. tREC Bit (TR) STOP Bit (ST) trec Time Units Min Max 00 96 98 ms 01 40 200(1) ms 1 X 50 2000 µs Condition TR ST HT Out FT AFE ABE SQWE WATCHDOG Register(1) Initial Power-up (Battery Attach)(2) 01 1100 0 0 0 Subsequent Power-up (with battery back-up)(3) UC UC 1 UC 0 0 0 0 0 Symbol Parameter Value Unit TSTG Storage Temperature (VCC Off, Oscillator Off) –55 to 150 °C TSLD (1) Lead Solder Temperature for 10 seconds 260 °C VIO Input or Output Voltages –0.3 to VCC + 0.3 V VCC Supply Voltage –0.3 to 4.6 V IO Output Current 20 mA PD Power Dissipation 1 W |
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