WM8326
Production Data
TABLE OF CONTENTS
DESCRIPTION....................................................................................................... 1
FEATURES............................................................................................................ 1
APPLICATIONS..................................................................................................... 1
BLOCK DIAGRAM ................................................................................................ 2
TYPICAL APPLICATIONS .................................................................................... 3
TABLE OF CONTENTS......................................................................................... 4
1
2
3
4
5
6
7
PIN CONFIGURATION.................................................................................. 8
ORDERING INFORMATION ......................................................................... 8
PIN DESCRIPTION ....................................................................................... 9
THERMAL CHARACTERISTICS ................................................................ 13
ABSOLUTE MAXIMUM RATINGS.............................................................. 14
RECOMMENDED OPERATING CONDITIONS .......................................... 15
ELECTRICAL CHARACTERISTICS........................................................... 16
7.1 DC-DC SYNCHRONOUS BUCK CONVERTERS ............................................... 16
7.2 LDO REGULATORS............................................................................................ 18
7.3 RESET THRESHOLDS ....................................................................................... 22
7.4 REFERENCES .................................................................................................... 22
7.5 GENERAL PURPOSE INPUTS / OUTPUTS (GPIO)........................................... 23
7.6 DIGITAL INTERFACES ....................................................................................... 24
7.7 AUXILIARY ADC.................................................................................................. 24
7.8 SYSTEM STATUS LED DRIVERS...................................................................... 24
TYPICAL POWER CONSUMPTION ........................................................... 25
TYPICAL PERFORMANCE DATA.............................................................. 26
9.1 DC-DC CONVERTERS ....................................................................................... 26
9.2 LDO REGULATORS............................................................................................ 26
8
9
10 SIGNAL TIMING REQUIREMENTS............................................................ 27
10.1
CONTROL INTERFACE................................................................................... 27
11 DEVICE DESCRIPTION.............................................................................. 29
11.1
11.2
11.3
11.4
11.5
11.6
11.7
GENERAL DESCRIPTION............................................................................... 29
POWER STATES ............................................................................................. 29
POWER STATE CONTROL............................................................................. 31
POWER STATE INTERRUPTS........................................................................ 36
POWER STATE GPIO INDICATION................................................................ 36
ON PIN FUNCTION.......................................................................................... 37
RESET PIN FUNCTION ................................................................................... 38
12 CONTROL INTERFACE.............................................................................. 40
12.1
12.2
12.3
12.4
12.5
12.6
GENERAL DESCRIPTION............................................................................... 40
2-WIRE (I2C) CONTROL MODE...................................................................... 40
4-WIRE (SPI) CONTROL MODE...................................................................... 43
REGISTER LOCKING ...................................................................................... 43
SOFTWARE RESET AND CHIP ID.................................................................. 44
SOFTWARE SCRATCH REGISTER................................................................ 44
13 CLOCKING AND OSCILLATOR CONTROL.............................................. 45
13.1
13.2
13.3
GENERAL DESCRIPTION............................................................................... 45
CRYSTAL OSCILLATOR INTERRUPTS ......................................................... 47
CRYSTAL OSCILLATOR CONNECTIONS...................................................... 48
14 INSTANTCONFIG™ (ICE) AND OTP MEMORY CONTROL...................... 49
PD, June 2012, Rev 4.0
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
