CDB6246-1

CDB6246-1 Datasheet

Part	Datasheet
CDB6246-1	CDB6246-1 (pdf)

Related Parts	Information
WM8326GEFL/V	WM8326GEFL/V
WM8326GEFL/RV	WM8326GEFL/RV
CDKWM8326-S-1	CDKWM8326-S-1
WM8326GEFL00E/V	WM8326GEFL00E/V
WM8326GEFL00E/RV	WM8326GEFL00E/RV
CDBWM8326-M-1	CDBWM8326-M-1

PDF Datasheet Preview
WM8326 Processor Power Management Subsystem The WM8326 is an integrated power-management subsystem which provides a cost-effective, flexible, single-chip solution for power management. It is specifically targeted at the requirements of a range of low-power portable consumer products, but is suitable to any application with a multimedia processor. The WM8326 is designed to operate as a system PMIC supporting the ARM9 , ARM11 and ARM Cortex-A processors, but is also capable of supporting the majority of application and mobile processors at the heart of a wide range of low-power consumer multimedia applications. The start-up behaviour and configuration is fully programmable in an integrated OTP non-volatile memory. This highly flexible solution helps reduce time-to-market, as changing application requirements can be very easily accommodated in the OTP. The InstantConfigTM interface enables an external EEPROM to configure the WM8326. The WM8326 power management subsystem comprises four programmable DC-DC converters and eleven LDO regulators four of which are low-noise for supplying sensitive analogue subsystems . The integrated OTP bootstrap circuitry controls the start-up sequencing and voltages of the converters and regulators as well as the sequencing of system clocks. The DC-DC converters deliver high performance and high efficiency across a wide range of operating conditions. They are optimised to support the high load current transients seen in modern processor core domains. DC-DC3 / DC-DC4 can be connected together and operated in ‘dual’ mode to support an increased current load of up to 1.6A An on-chip regulator provides power for always-on PMIC functions such as register map and the RTC. The device provides autonomous backup battery switchover. A low-power LDO is included to support ‘Alive’ processor power domains external to the WM8326. A 12-bit Auxiliary ADC supports a wide range of applications for internal as well as external analogue sampling, such as voltage detection and temperature measurement. WM8326 includes a crystal oscillator and an internal RC oscillator to generate all clock signals for autonomous system start-up and processor clocking. A Secure Real-time Clock SRTC and alarm function is included, capable of waking up the system from low-power modes. A watchdog function is provided to ensure system integrity. To maximise battery life, highly-granular power management enables each function in the WM8326 subsystem to be independently powered down through a control interface or alternatively through register and OTP-configurable GPIOs. The device offers a standby power consumption of <7uA, making it particularly suitable for portable applications. The WM8326 is supplied in an 8x8mm 81-lead QFN package, ideal for use in portable systems. The WM8326 forms part of the Wolfson series of audio and power management solutions, and is widely register compatible with the WM831X devices. Power Management • 2 x DC-DC synchronous buck converters 0.6V - 1.8V, 2.5A, DVS • 2 x DC-DC synchronous buck converters 0.85V - 3.4V, 1A • 1 x LDO regulator 0.9V - 3.3V, 300mA, • 2 x LDO regulators 0.9V - 3.3V, 200mA, • 3 x LDO regulators 0.9V - 3.3V, 100mA, • 2 x Low-noise LDO regulators 1.0V - 3.5V, 200mA, • 2 x Low-noise LDO regulators 1.0V - 3.5V, 150mA, • 1 x ‘Alive’ regulator 0.8V 1.55V, up to 25mA System Control • I2C or SPI compatible primary control interface • Comprehensive interrupt scheme • Watchdog timer and system reset control • Autonomous power sequencing and fault detection • OTP memory bootstrap configuration function Additional Features • Auxiliary ADC for multi-function analogue measurement • 128-bit pseudo-random unique ID • Secure Real-Time Clock with wake-up alarm • 12 x configurable multi-function GPIO pins • Comprehensive clocking scheme low-power 32kHz RTC crystal oscillator, GPIO clock output and 4MHz RC clock for power management • System LED outputs indicating device power state, and fault status Package Options • 8 x 8 x 0.85mm, 81-lead QFN package • Cellular Handsets • Smartphones • Electronic Books • Portable Media Players • Mobile Internet Devices • Electronic Gaming Devices • Netbooks • Smartbooks • Set Top Box • Digital Picture Frames WOLFSON MICROELECTRONICS plc To receive regular email updates, sign up at WM8326 BLOCK DIAGRAM Production Data IRQ RESET CS SDA1 SCLK1 SDOUT1 CIFMODE SDA2 SCLK2 DC1GND DC1FB DC1LX DC1VDD DC2GND DC2FB DC2LX DC2VDD DC3GND DC3FB DC3LX DC3VDD DC4GND DC4FB DC4LX DC4VDD DBVDD PROGVDD Interrupt and Primary Control Reset Controller Interface Instant ConfigTM EEPROM Interface DC-DC1 Buck to 1.8V 2.5A DC-DC2 Buck to 1.8V 2.5A DC-DC3 Buck to 3.4V 1A DC-DC4 Buck to 3.4V 1A Dual Mode Control LED1 LED2 System Status LED Driver Register Map and Application Processor 2 ORDERING INFORMATION 8 3 PIN DESCRIPTION 9 4 THERMAL CHARACTERISTICS 13 5 ABSOLUTE MAXIMUM 14 6 RECOMMENDED OPERATING CONDITIONS 15 7 ELECTRICAL CHARACTERISTICS 16 DC-DC SYNCHRONOUS BUCK CONVERTERS 16 LDO REGULATORS 18 RESET THRESHOLDS 22 REFERENCES 22 GENERAL PURPOSE INPUTS / OUTPUTS 23 DIGITAL INTERFACES 24 AUXILIARY 24 SYSTEM STATUS LED DRIVERS 24 8 TYPICAL POWER CONSUMPTION 25 9 TYPICAL PERFORMANCE 26 DC-DC CONVERTERS 26 LDO REGULATORS 26 10 SIGNAL TIMING REQUIREMENTS 27 CONTROL INTERFACE 27 11 DEVICE DESCRIPTION 29 GENERAL DESCRIPTION 29 POWER STATES 29 POWER STATE CONTROL 31 POWER STATE 36 POWER STATE GPIO INDICATION 36 ON PIN FUNCTION 37 RESET PIN FUNCTION 38 12 CONTROL 40 GENERAL DESCRIPTION 40 2-WIRE I2C CONTROL MODE 40 4-WIRE SPI CONTROL 43 REGISTER LOCKING 43 SOFTWARE RESET AND CHIP 44 SOFTWARE SCRATCH 44 13 CLOCKING AND OSCILLATOR CONTROL 45 GENERAL DESCRIPTION 45 CRYSTAL OSCILLATOR INTERRUPTS 47 CRYSTAL OSCILLATOR CONNECTIONS 48 14 INSTANTCONFIG ICE AND OTP MEMORY CONTROL...................... 49 Production Data WM8326 GENERAL DESCRIPTION 49 ICE AND OTP MEMORY DEFINITION 49 BOOTSTRAP START-UP 50 START-UP FROM OTP MEMORY 50 START-UP FROM ICE MEMORY DEVELOPMENT 51 START-UP FROM DCRW REGISTER SETTINGS 51 EXTERNAL ICE MEMORY CONNECTION 51 OTP / ICE MEMORY 52 ENTERING / EXITING THE PROGRAM STATE 53 OTP / ICE READ COMMAND 53 OTP WRITE COMMAND 54 OTP VERIFY COMMAND 54 OTP FINALISE COMMAND 55 OTP CONTROL REGISTER 55 OTP / ICE INTERRUPTS 57 DCRW MEMORY 57 DCRW PAGE 0 57 DCRW PAGE 1 58 DCRW PAGE 2 58 DCRW PAGE 3 59 DCRW PAGE 4 61 15 POWER MANAGEMENT 62 GENERAL DESCRIPTION 62 DC-DC CONVERTER AND LDO REGULATOR ENABLE 62 TIMESLOT CONTROL AND HARDWARE ENABLE GPIO CONTROL......... 63 OPERATING MODE CONTROL 64 2 ORDERING INFORMATION ORDER CODE TEMPERATURE RANGE TA WM8326GEFL/V Unprogrammed -40C to +85C WM8326GEFL/RV Unprogrammed -40C to +85C WM8326GEFLxxx/RV* Custom -40C to +85C Note Reel quantity = 2200 * xxx = Unique OTP part number Custom OTP minimum order quantity PACKAGE 81-lead QFN 8 x 8mm Pb-free 81-lead QFN 8 x 8mm Pb-free, tape and reel 81-lead QFN 8 x 8mm Pb-free, tape and reel MOISTURE SENSITIVITY LEVEL MSL3 PEAK SOLDERING TEMPERATURE 260C MSL3 260C MSL3 260C Production Data WM8326 3 PIN DESCRIPTION Notes Pins are sorted by functional groups. The power domain associated with each pin is noted VPMIC is the domain powered by LDO12 for the ‘always-on’ functions internal to the WM8326. Note that an external level-shifter may be required when interfacing between different power domains. NAME TYPE Clocking and Real Time Clock XOSCGND Analogue Output Analogue Input Supply CLKOUT Digital Output General Purpose Input / Output and Auxiliary ADC GPIO1 Digital I/O GPIO2 Digital I/O

PDF Datasheet Preview

WM8326

Processor Power Management Subsystem

The WM8326 is an integrated power-management subsystem which provides a cost-effective, flexible, single-chip solution for power management. It is specifically targeted at the requirements of a range of low-power portable consumer products, but is suitable to any application with a multimedia processor. The WM8326 is designed to operate as a system PMIC supporting the ARM9 , ARM11 and ARM Cortex-A processors, but is also capable of supporting the majority of application and mobile processors at the heart of a wide range of low-power consumer multimedia applications.

The start-up behaviour and configuration is fully programmable in an integrated OTP non-volatile memory. This highly flexible solution helps reduce time-to-market, as changing application requirements can be very easily accommodated in the OTP. The InstantConfigTM interface enables an external EEPROM to configure the WM8326.

The WM8326 power management subsystem comprises four programmable DC-DC converters and eleven LDO regulators four of which are low-noise for supplying sensitive analogue subsystems . The integrated OTP bootstrap circuitry controls the start-up sequencing and voltages of the converters and regulators as well as the sequencing of system clocks.

The DC-DC converters deliver high performance and high efficiency across a wide range of operating conditions. They are optimised to support the high load current transients seen in modern processor core domains. DC-DC3 / DC-DC4 can be connected together and operated in ‘dual’ mode to support an increased current load of up to 1.6A

An on-chip regulator provides power for always-on PMIC functions such as register map and the RTC. The device provides autonomous backup battery switchover. A low-power LDO is included to support ‘Alive’ processor power domains external to the WM8326.

A 12-bit Auxiliary ADC supports a wide range of applications for internal as well as external analogue sampling, such as voltage detection and temperature measurement.

WM8326 includes a crystal oscillator and an internal RC oscillator to generate all clock signals for autonomous system start-up and processor clocking. A Secure Real-time Clock SRTC and alarm function is included, capable of waking up the system from low-power modes. A watchdog function is provided to ensure system integrity.

To maximise battery life, highly-granular power management enables each function in the WM8326 subsystem to be independently powered down through a control interface or alternatively through register and OTP-configurable GPIOs. The device offers a standby power consumption of <7uA, making it particularly suitable for portable applications.

The WM8326 is supplied in an 8x8mm 81-lead QFN package, ideal for use in portable systems. The WM8326 forms part of the Wolfson series of audio and power management solutions, and is widely register compatible with the WM831X devices.

Power Management
• 2 x DC-DC synchronous buck converters
0.6V - 1.8V, 2.5A, DVS
• 2 x DC-DC synchronous buck converters
0.85V - 3.4V, 1A
• 1 x LDO regulator 0.9V - 3.3V, 300mA,
• 2 x LDO regulators 0.9V - 3.3V, 200mA,
• 3 x LDO regulators 0.9V - 3.3V, 100mA,
• 2 x Low-noise LDO regulators 1.0V - 3.5V, 200mA,
• 2 x Low-noise LDO regulators 1.0V - 3.5V, 150mA,
• 1 x ‘Alive’ regulator 0.8V 1.55V, up to 25mA

System Control
• I2C or SPI compatible primary control interface
• Comprehensive interrupt scheme
• Watchdog timer and system reset control
• Autonomous power sequencing and fault detection
• OTP memory bootstrap configuration function

Additional Features
• Auxiliary ADC for multi-function analogue measurement
• 128-bit pseudo-random unique ID
• Secure Real-Time Clock with wake-up alarm
• 12 x configurable multi-function GPIO pins
• Comprehensive clocking scheme low-power 32kHz RTC
crystal oscillator, GPIO clock output and 4MHz RC clock for power management
• System LED outputs indicating device power state, and fault status

Package Options
• 8 x 8 x 0.85mm, 81-lead QFN package
• Cellular Handsets
• Smartphones
• Electronic Books
• Portable Media Players
• Mobile Internet Devices
• Electronic Gaming Devices
• Netbooks
• Smartbooks
• Set Top Box
• Digital Picture Frames

WOLFSON MICROELECTRONICS plc To receive regular email updates, sign up at

WM8326 BLOCK DIAGRAM

Production Data

IRQ RESET CS SDA1 SCLK1 SDOUT1 CIFMODE SDA2 SCLK2 DC1GND DC1FB DC1LX DC1VDD DC2GND DC2FB DC2LX DC2VDD DC3GND DC3FB DC3LX DC3VDD DC4GND DC4FB DC4LX DC4VDD

DBVDD PROGVDD

Interrupt and Primary Control

Reset Controller

Interface

Instant ConfigTM EEPROM Interface

DC-DC1 Buck
to 1.8V 2.5A

DC-DC2 Buck
to 1.8V 2.5A

DC-DC3 Buck
to 3.4V 1A

DC-DC4 Buck
to 3.4V 1A

Dual Mode Control

LED1 LED2

System Status

LED Driver

Register Map and Application Processor
2 ORDERING INFORMATION 8
3 PIN DESCRIPTION 9
4 THERMAL CHARACTERISTICS 13
5 ABSOLUTE MAXIMUM 14
6 RECOMMENDED OPERATING CONDITIONS 15
7 ELECTRICAL CHARACTERISTICS 16

DC-DC SYNCHRONOUS BUCK CONVERTERS 16 LDO REGULATORS 18 RESET THRESHOLDS 22 REFERENCES 22 GENERAL PURPOSE INPUTS / OUTPUTS 23 DIGITAL INTERFACES 24 AUXILIARY 24 SYSTEM STATUS LED DRIVERS 24
8 TYPICAL POWER CONSUMPTION 25
9 TYPICAL PERFORMANCE 26

DC-DC CONVERTERS 26 LDO REGULATORS 26
10 SIGNAL TIMING REQUIREMENTS 27

CONTROL INTERFACE 27
11 DEVICE DESCRIPTION 29

GENERAL DESCRIPTION 29 POWER STATES 29 POWER STATE CONTROL 31 POWER STATE 36 POWER STATE GPIO INDICATION 36 ON PIN FUNCTION 37 RESET PIN FUNCTION 38
12 CONTROL 40

GENERAL DESCRIPTION 40 2-WIRE I2C CONTROL MODE 40 4-WIRE SPI CONTROL 43 REGISTER LOCKING 43 SOFTWARE RESET AND CHIP 44 SOFTWARE SCRATCH 44
13 CLOCKING AND OSCILLATOR CONTROL 45

GENERAL DESCRIPTION 45 CRYSTAL OSCILLATOR INTERRUPTS 47 CRYSTAL OSCILLATOR CONNECTIONS 48
14 INSTANTCONFIG ICE AND OTP MEMORY CONTROL...................... 49

Production Data

WM8326

GENERAL DESCRIPTION 49 ICE AND OTP MEMORY DEFINITION 49 BOOTSTRAP START-UP 50

START-UP FROM OTP MEMORY 50

START-UP FROM ICE MEMORY DEVELOPMENT 51

START-UP FROM DCRW REGISTER SETTINGS 51

EXTERNAL ICE MEMORY CONNECTION 51

OTP / ICE MEMORY 52

ENTERING / EXITING THE PROGRAM STATE 53

OTP / ICE READ COMMAND 53

OTP WRITE COMMAND 54

OTP VERIFY COMMAND 54

OTP FINALISE COMMAND 55

OTP CONTROL REGISTER 55

OTP / ICE INTERRUPTS 57 DCRW MEMORY 57

DCRW PAGE 0 57

DCRW PAGE 1 58

DCRW PAGE 2 58

DCRW PAGE 3 59

DCRW PAGE 4 61
15 POWER MANAGEMENT 62

GENERAL DESCRIPTION 62 DC-DC CONVERTER AND LDO REGULATOR ENABLE 62 TIMESLOT CONTROL AND HARDWARE ENABLE GPIO CONTROL......... 63 OPERATING MODE CONTROL 64
2 ORDERING INFORMATION

ORDER CODE

TEMPERATURE RANGE TA

WM8326GEFL/V

Unprogrammed -40C to +85C

WM8326GEFL/RV

Unprogrammed -40C to +85C

WM8326GEFLxxx/RV*

Custom
-40C to +85C

Note Reel quantity = 2200 * xxx = Unique OTP part number ** Custom OTP minimum order quantity

PACKAGE
81-lead QFN 8 x 8mm Pb-free
81-lead QFN 8 x 8mm Pb-free, tape and reel 81-lead QFN 8 x 8mm Pb-free, tape and reel **

MOISTURE SENSITIVITY

LEVEL

MSL3

PEAK SOLDERING TEMPERATURE
260C

MSL3
260C

MSL3
260C

Production Data

WM8326
3 PIN DESCRIPTION

Notes Pins are sorted by functional groups. The power domain associated with each pin is noted VPMIC is the domain powered by LDO12 for the ‘always-on’
functions internal to the WM8326. Note that an external level-shifter may be required when interfacing between different power domains.

NAME

TYPE

Clocking and Real Time Clock

XOSCGND

Analogue Output Analogue Input

Supply

CLKOUT

Digital Output

General Purpose Input / Output and Auxiliary ADC

GPIO1

Digital I/O

GPIO2

Digital I/O

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Datasheet ID: CDB6246-1 523267