JAJSHF0B February 2019 – November 2019 BQ25887
PRODUCTION DATA.
REG29 is shown in Figure 65 and described in Table 49.
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| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| Reset | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 0 |
| Field | VQUAL_TH | VDIFF_START | ||||||
| Bit | Field | Type | Reset by REG_RST | Reset by WATCHDOG | Description | ||
|---|---|---|---|---|---|---|---|
| 7 | VQUAL_TH [3] | R/W | Yes | No | 80 mV | The threshold from cell balancing pre-qualification mode to cell balancing qualification mode. This is the differential threshold between the two cells when charging is enabled. Offset is 40mV. Range from 40mV to 180mV with 10mV step.
0000 – 40 mV 0001 – 50 mV 0010 – 60 mV 0011 – 70 mV 0100 – 80 mV 0101 – 90 mV 0110 – 100 mV 0111 – 110 mV 1000 – 120 mV 1001 – 130 mV 1010 – 140 mV 1011 – 150 mV 1100: 160 mV 1101 – 170 mV 1110 – 180 mV 1111 – Disable pre-qualification (Default) |
|
| 6 | VQUAL_TH [2] | R/W | Yes | No | 40 mV | ||
| 5 | VQUAL_TH [1] | R/W | Yes | No | 20 mV | ||
| 4 | VQUAL_TH [0] | R/W | Yes | No | 10 mV | ||
| 3 | VDIFF_START [3] | R/W | Yes | No | 80 mV | The threshold from cell balancing qualification mode to cell balancing active mode. This is the differential threshold between the two cells when charging is enabled. Offset is 40mV. Range from 40 mV to 190 mV with 10-mV step. Default VDIFF_START is 0100 (80 mV)
0000 – 40 mV 0001 – 50 mV 0010 – 60 mV 0011 – 70 mV 0100 – 80 mV (Default) 0101 – 90 mV 0110 – 100 mV 0111 – 110 mV 1000 – 120 mV 1001 – 130 mV 1010 – 140 mV 1011 – 150 mV 1100 – 160 mV 1101 – 170 mV 1110 – 180 mV 1111 – 190 mV |
|
| 2 | VDIFF_START [2] | R/W | Yes | No | 40 mV | ||
| 1 | VDIFF_START [0] | R/W | Yes | No | 20 mV | ||
| 0 | VDIFF_START [1] | R/W | Yes | No | 10 mV | ||