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ST7LITE0 Datasheet(PDF) 79 Page - STMicroelectronics |
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ST7LITE0 Datasheet(HTML) 79 Page - STMicroelectronics |
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79 / 122 page  ST7LITE0, ST7SUPERLITE 79/122 13.2 ABSOLUTE MAXIMUM RATINGS Stresses above those listed as “absolute maxi- mum ratings” may cause permanent damage to the device. This is a stress rating only and func- tional operation of the device under these condi- tions is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. 13.2.1 Voltage Characteristics 13.2.2 Current Characteristics 13.2.3 Thermal Characteristics Notes: 1. Directly connecting the RESET and I/O pins to VDD or VSS could damage the device if an unintentional internal reset is generated or an unexpected change of the I/O configuration occurs (for example, due to a corrupted program counter). To guarantee safe operation, this connection has to be done through a pull-up or pull-down resistor (typical: 4.7k Ω for RESET, 10k Ω for I/Os). Unused I/O pins must be tied in the same way to V DD or VSS according to their reset configuration. 2. When the current limitation is not possible, the VIN absolute maximum rating must be respected, otherwise refer to IINJ(PIN) specification. A positive injection is induced by VIN>VDD while a negative injection is induced by VIN<VSS. 3. All power (VDD) and ground (VSS) lines must always be connected to the external supply. 4. Negative injection disturbs the analog performance of the device. In particular, it induces leakage currents throughout the device including the analog inputs. To avoid undesirable effects on the analog functions, care must be taken: - Analog input pins must have a negative injection less than 0.8 mA (assuming that the impedance of the analog voltage is lower than the specified limits) - Pure digital pins must have a negative injection less than 1.6mA. In addition, it is recommended to inject the current as far as possible from the analog input pins. 5. When several inputs are submitted to a current injection, the maximum ΣI INJ(PIN) is the absolute sum of the positive and negative injected currents (instantaneous values). These results are based on characterisation with ΣI INJ(PIN) maxi- mum current injection on four I/O port pins of the device. 6. True open drain I/O port pins do not accept positive injection. Symbol Ratings Maximum value Unit VDD - VSS Supply voltage 7.0 V VIN Input voltage on any pin 1) & 2) VSS-0.3 to VDD+0.3 VESD(HBM) Electrostatic discharge voltage (Human Body Model) see section 13.7.2 on page 91 VESD(MM) Electrostatic discharge voltage (Machine Model) Symbol Ratings Maximum value Unit IVDD Total current into VDD power lines (source) 3) 100 mA IVSS Total current out of VSS ground lines (sink) 3) 100 IIO Output current sunk by any standard I/O and control pin 25 Output current sunk by any high sink I/O pin 50 Output current source by any I/Os and control pin - 25 IINJ(PIN) 2) & 4) Injected current on RESET pin ± 5 Injected current on any other pin 5) & 6) ± 5 ΣI INJ(PIN) 2) Total injected current (sum of all I/O and control pins) 5) ± 20 Symbol Ratings Value Unit TSTG Storage temperature range -65 to +150 °C TJ Maximum junction temperature (see Section 14.2 THERMAL CHARACTERISTICS) 1 |
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