WM8351CGEB/RV WOLFSON [Wolfson Microelectronics plc], WM8351CGEB/RV Datasheet - Page 7

• Manufacturer Part Number: WM8351CGEB/RV
• Manufacturer: WOLFSON [Wolfson Microelectronics plc]

Production Data
17
18
19
20
21
22
23
24
w
16.3
16.4
17.1
17.2
17.3
17.4
17.5
17.6
17.7
19.1
19.2
19.3
19.4
19.5
19.6
19.7
20.1
20.2
21.1
21.2
22.1
22.2
22.3
22.4
22.5
24.1
24.2
POWER SUPPLY CONTROL ................................................................... 152
17.7.1
17.7.2
17.7.3
17.7.4
17.7.5
17.7.6
17.7.7
17.7.8
SYSTEM MONITORING AND UNDERVOLTAGE LOCKOUT (UVLO) .... 168
AUXILIARY ADC ....................................................................................... 170
GENERAL PURPOSE INPUTS / OUTPUTS (GPIO) ................................ 179
20.1.1
20.1.2
20.1.3
20.2.1
20.2.2
VOLTAGE REFERENCES ........................................................................ 189
REAL-TIME CLOCK (RTC) ....................................................................... 190
22.2.1
22.2.2
22.2.3
22.2.4
22.2.5
WATCHDOG TIMER ................................................................................. 197
INTERRUPT CONTROLLER .................................................................... 199
OPEN-DRAIN LED OUTPUTS ....................................................................... 151
LED DRIVER CONNECTIONS ....................................................................... 151
GENERAL DESCRIPTION ............................................................................. 152
BATTERY POWERED OPERATION ............................................................. 153
WALL ADAPTOR (LINE) POWERED OPERATION....................................... 153
USB POWERED OPERATION ....................................................................... 154
EXTERNAL INTERRUPTS ............................................................................. 156
BACKUP POWER .......................................................................................... 156
BATTERY CHARGER .................................................................................... 157
GENERAL DESCRIPTION ............................................................................. 170
INITIATING AUXADC MEASUREMENTS ...................................................... 171
VOLTAGE SCALING AND REFERENCES .................................................... 173
AUXADC READBACK .................................................................................... 174
CALIBRATION ................................................................................................ 176
DIGITAL COMPARATORS ............................................................................. 177
AUXADC INTERRUPTS ................................................................................. 178
GENERAL DESCRIPTION ............................................................................. 179
GPIO ALTERNATE FUNCTIONS ................................................................... 182
MAIN REFERENCE (VREF) ........................................................................... 189
LOW-POWER REFERENCE .......................................................................... 189
GENERAL DESCRIPTION ............................................................................. 190
RTC CONTROL .............................................................................................. 190
TRIMMING THE RTC ..................................................................................... 193
RTC GPIO OUTPUT ....................................................................................... 194
RTC INTERRUPTS ........................................................................................ 196
CONFIGURING THE IRQ PIN ........................................................................ 200
FIRST LEVEL INTERRUPTS ......................................................................... 200
GENERAL DESCRIPTION ................................................................................................. 157
BATTERY CHARGER ENABLE ......................................................................................... 159
TRICKLE CHARGING ........................................................................................................ 159
FAST CHARGING .............................................................................................................. 161
BATTERY CHARGER TIMEOUT AND TERMINATION .................................................... 163
BATTERY CHARGER STATUS ......................................................................................... 164
BATTERY FAULT CONDITIONS ....................................................................................... 165
INTERRUPTS AND FAULT PROTECTION ....................................................................... 167
CONFIGURING GPIO PINS .............................................................................................. 180
INPUT DE-BOUNCE .......................................................................................................... 181
GPIO INTERRUPTS .......................................................................................................... 181
LIST OF ALTERNATE FUNCTIONS .................................................................................. 182
SELECTING GPIO ALTERNATE FUNCTIONS ................................................................. 185
MODES OF OPERATION .................................................................................................. 190
RTC TIME REGISTERS ..................................................................................................... 190
SETTING THE TIME .......................................................................................................... 191
RTC ALARM REGISTERS ................................................................................................. 191
SETTING THE ALARM ...................................................................................................... 193
PD, April 2012, Rev 4.5
WM8351
7