L9963E datasheet(95/184 Pages) STMICROELECTRONICS

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Operation

Skip condition

GPIO4

GPIO4_CONFIG != 00

GPIO5

GPIO5_CONFIG != 00

GPIO6

GPIO6_CONFIG != 00

GPIO7

GPIO7_CONFIG != 00

GPIO8

GPIO8_CONFIG != 00

GPIO9

GPIO9_CONFIG != 00

The step duration is fixed: it lasts TCYCLEADC_000 (refer to Table 38).

The following failures can be flagged during GPIO conversion step execution, thus causing Configuration

Override:

•

GPIOX_OT: if the converted voltage is lower than the programmed UV/OT threshold (VGPIOAN_OT).

•

GPIOX_UT: if the converted voltage is higher than the programmed OV/UT threshold (VGPIOAN_UT).

•

GPIOX_fastchg_OT: if the converted voltage is lower than the programmed fast charge UV/OT

threshold (VGPIOAN_OT + VGPIO_FASTCH_OT_DELTA); this function can be masked with a dedicated bit

(Gpiox_fastchg_OT_MSK).

4.12.3.4

GPIO terminal diagnostics

GPIO terminal diagnostics is the fourth step of the voltage conversion routine. It is optional:

•

To include it in an On-Demand Conversions, the GPIO_TERM_CONV bit must be set along with the SOC

in the same SPI frame.

•

To specify its periodicity in Cyclic Conversions, the NCYCLE_GPIO_TERM field must be programmed

(refer to Section 4.12.4 Operations periodicity).

During this step, the GPIO open diagnostic will be performed on all GPIOs configured as analog inputs.

Table 63. Operations performed during GPIO terminal diagnostics step

Operation

Skip condition

GPIO1 Open

Always

GPIO2 Open

Always

GPIO3 Open

GPIO3_CONFIG != 00

GPIO4 Open

GPIO4_CONFIG != 00

GPIO5 Open

GPIO5_CONFIG != 00

GPIO6 Open

GPIO6_CONFIG != 00

GPIO7 Open

GPIO7_CONFIG != 00

GPIO8 Open

GPIO8_CONFIG != 00

GPIO9 Open

GPIO9_CONFIG != 00

The step duration is fixed: it lasts TGPIO_OPEN_SET + TCYCLEADC_000 (refer to Table 38).

The following failure can be flagged during GPIO terminal diagnostics step execution, thus causing

Configuration Override:

•

GPIOX_OPEN: if VGPIO < VGPIO_OL while IGPIO_PD_OPEN is applied

4.12.3.5

Cell terminal diagnostics

Cell terminal diagnostics is the fifth step of the voltage conversion routine. It is optional and its execution mode

depends on the ADC_CROSS_CHECK bit (refer to Cell open wire diagnostic for further information):

•

To include it in On-Demand Conversions, the CELL_TERM_CONV bit must be set along with the SOC in

the same SPI frame.

L9963E

Voltage conversion routine

DS13636 - Rev 12

page 95/184

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