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L9963E 数据表(PDF) 97 Page - STMicroelectronics |
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L9963E 数据表(HTML) 97 Page - STMicroelectronics |
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97 / 184 page  Operation Skip condition B8_7 – S7 Open / Short VCELL7_EN = 0 S8 – B8_7 Open / Short VCELL8_EN = 0 B10_9 – S9 Open / Short VCELL9_EN = 0 S10 – B10_9 Open / Short VCELL10_EN = 0 B12_11 – S11 Open / Short VCELL11_EN = 0 S12 – B12_11 Open / Short VCELL12_EN = 0 B14_13 – S13 Open / Short VCELL13_EN = 0 S14 – B14_13 Open / Short VCELL14_EN = 0 The step duration is fixed: it lasts 2*TBAL_OL. The following failure can be flagged during balance terminal diagnostics step execution, thus causing Configuration Override: • BALX_OPEN: if the voltage drop on the VDS of the balance power MOS becomes lower than VBAL_OPEN. 4.12.3.7 Hardware Self-Check (HWSC) HWSC is the seventh step of the voltage conversion routine. It is optional: • To include it in On-Demand Conversions, the HWSC bit must be set along with the SOC in the same SPI frame. • To specify its periodicity in Cyclic Conversions, the NCYCLE_HWSC field must be programmed (refer to Section 4.12.4 Operations periodicity). During this step, a BIST will be executed on the enabled analog conversion paths to verify the functionality of the ADC chain. Analog comparators used for UV/OV detection and diagnostics will also be checked. Table 66. Operations performed during HWSC step Operation Skip condition CX to ADC Never GPIO3-9 to ADC Never VBAT UV/OV comparator Never VREG UV/OV comparator Never VCOM UV/OV comparator Never VTREF UV/OVcomparator Never Bx_x-1 to ADC Never Sx to ADC Never Bx_x-1/Sx-1 Open/Short comparator (even cells) Never Sx/Bx_x-1 Open/Short comparator (odd cells) Never The step duration is fixed: it lasts 3*TCYCLEADC_000 (refer to Table 38). The following failures can be flagged during HWSC step execution, thus causing Configuration Override: • MUX_BIST_FAIL: if a failure is found while converting the Cx paths connected to the analog MUX • OPEN_BIST_FAIL: if a failure is found while converting the Sx/Bx_x-1 paths connected to the analog MUX • GPIO_BIST_FAIL: if a failure is found while converting the GPIOx paths connected to the analog MUX • VBAT_COMP_BIST_FAIL: if the BIST on the VBAT UV/OV comparator fails • VREG_COMP_BIST_FAIL: if the BIST on the VREG UV/OV comparator fails • VCOM_COMP_BIST_FAIL: if the BIST on the VCOM UV/OV comparator fails • VTREF_COMP_BIST_FAIL: if the BIST on the VTREF UV/OV comparator fails L9963E Voltage conversion routine DS13636 - Rev 12 page 97/184 |
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