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AN4371 Datasheet(PDF) 2 Page - STMicroelectronics |
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AN4371 Datasheet(HTML) 2 Page - STMicroelectronics |
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2 / 29 page ![]() Contents AN4371 2/29 DocID025337 Rev 1 Contents 1 ADC built-in self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 ADC Built-in self-test description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.2 ADC self-test important note . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.3 ADC calibration data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.4 Reading from Test Flash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.4.1 Flash content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2 ADC built-in self-test algorithms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.1 Self-test execution flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.2 Supply self-test – Algorithm S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 2.2.1 Supply self-test in CPU mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2.3 Resistive-Capacitive self-test - Algorithm RC . . . . . . . . . . . . . . . . . . . . . . 16 2.3.1 Resistive-Capacitive self-test in CPU mode . . . . . . . . . . . . . . . . . . . . . 16 2.4 Capacitive self-test - Algorithm C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2.4.1 Capacitive self-test in CPU mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3 Appendix A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 3.1 Test Flash copy function example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 3.2 Algorithm S example in CPU scan mode . . . . . . . . . . . . . . . . . . . . . . . . . 20 3.3 Algorithm RC example in CPU one-shot mode . . . . . . . . . . . . . . . . . . . . 22 3.4 Algorithm RC example in CPU scan mode . . . . . . . . . . . . . . . . . . . . . . . 23 3.5 Algorithm C example in CPU one-shot mode . . . . . . . . . . . . . . . . . . . . . . 24 3.6 Algorithm C example in CPU scan mode . . . . . . . . . . . . . . . . . . . . . . . . . 25 Appendix A Reference document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 |
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