WM8310GEB/V Wolfson Microelectronics, WM8310GEB/V Datasheet - Page 110

• Manufacturer Part Number: WM8310GEB/V
• Description: POWER MANAGEMENT SUBSYSTEM, 169BGA
• Manufacturer: Wolfson Microelectronics

Specifications of WM8310GEB/V

• Supply Voltage: 7V
• No. Of Step-down Dc - Dc Converters: 4
• No. Of Ldo Regulators: 11
• Digital Ic Case Style: BGA
• No. Of Pins: 169
• No. Of Regulated Outputs: 13
• Operating Temperature Range: -40°C To
• Rohs Compliant: Yes
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

WM8310
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Table 58 Battery Charger Control
The Battery Charger is associated with a number of Interrupt flags. Whenever the Battery Charger
state changes, the CHG_MODE_EINT interrupt is set (see Section 17.7.8). This interrupt is set
whenever charging starts, charging stops, fast charge is selected, fast charge is de-selected, an
overtemperature condition occurs, or if the charger detects a battery failure. The CHG_START_EINT
interrupt is also set whenever Battery Charging commences, including after pause due to USB limit
or over-temperature condition.
17.7.3
Fast charging provides a faster way to charge the battery than is possible with trickle charge. See
Section 17.7.1 for a description of fast charging.
Fast charging mode is only possible under certain conditions. It is only possible when the selected
power source is Wall or when the USB current limit is set to 500mA or more. It is also required that
the battery voltage is above the fast charge voltage threshold; this ensures that fast charging is not
applied to a heavily discharged battery.
R16456
(4048h)
Charger
Control 1
R16457
(4049h)
Charger
Control 2
R16458
(404Ah)
Charger
Status
ADDRESS
FAST CHARGING
BIT
7:6
5:4
15
14
0
9
8
CHG_ENA
CHG_CHIP_TEMP_
MON
CHG_OFF_MASK
CHG_TRKL_ILIM
[1:0]
CHG_VSEL [1:0]
CHG_TOPOFF
CHG_ACTIVE
LABEL
DEFAULT
00
00
0
1
0
0
0
Battery Charger Enable
0 = Disable
1 = Enable
Protected by user key
Battery Charger Thermal warning select
0 = Thermal Warning is ignored
1 = Thermal Warning pauses Battery
Charger
Protected by user key
Battery Charger OFF mask select
0 = OFF requests not masked
1 = OFF requests masked during
Charging
Protected by user key
Battery Trickle Charge current limit
00 = 50mA
01 = 100mA
10 = 150mA
11 = 200mA
Protected by user key
Battery Charger target voltage
00 = 4.05V
01 = 4.10V
10 = 4.15V
11 = 4.20V
Note that incorrect setting of this
register may lead to a safety hazard
condition.
Protected by user key
Battery Charger constant-voltage
charge mode status
0 = Constant-voltage mode not active
1 = Constant-voltage mode is active
Battery Charger status
0 = Not charging
1 = Charging
PP, December 2009, Rev 3.0
DESCRIPTION
Pre-Production
110