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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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L99UDL01 Fiches technique(PDF) 83 Page - STMicroelectronics |
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L99UDL01 Fiches technique(HTML) 83 Page - STMicroelectronics |
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83 / 88 page  DS12511 Rev 5 83/88 L99UDL01 Programmers guide 87 CFx_x These bits in these 6 registers provide a 10 bit binary digital reflection of the current regulation loop internal value. This value is periodically sampled and filtered to show what the current regulation loop is measuring. Taking bits 1 – 10 and multiplying by KFB (6.25 mA/bit see Table 9) provides the value of the current being measured. Regx[1-10] x KFB = Imeasure For register 13H please remove bit 15 prior to calculating the current. For all registers the parity bit must also be stripped off prior to calculation (shift the data right by one bit). V3V3UV The V3V3UV bit is only in register 13H. This bit is set when the V3V3 voltage regulator voltage falls below the V3V3UV_F threshold. It is only reset by a read and clear command. This fault is also reported in the FE2 bit in the Global Status byte. 6.3.6 Register 19H-1CH silicon test traceability data This data indicated when the device was manufactured and tested. Table 58. 13H through 18H register bit description Bit No. Function Level State after SPI Read&Clear Default (After POR) 15 V3V3UV(1) 3V3 under voltage Cleared 0 14 Reserved 0 13 0 12 0 11 0 10 CFx_9 Current control Feedback loop bit 9 Read only 0 9 CFx_8 Current control Feedback loop bit 8 Read only 0 8 CFx_7 Current control Feedback loop bit 7 Read only 0 7 CFx_6 Current control Feedback loop bit 6 Read only 0 6 CFx_5 Current control Feedback loop bit 5 Read only 0 5 CFx_4 Current control Feedback loop bit 4 Read only 0 4 CFx_3 Current control Feedback loop bit 3 Read only 0 3 CFx_2 Current control Feedback loop bit 2 Read only 0 2 CFx_1 Current control Feedback loop bit 1 Read only 0 1 CFx_0 Current control Feedback loop bit 0 Read only 0 0 LSB Parity Parity bit 1 1. Found in register 13H only. |
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