wm8326 Wolfson Microelectronics plc, wm8326 Datasheet
wm8326
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wm8326 Summary of contents
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... 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 family of PMIC devices ...
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... Clocking and Auxiliary ADC Functions w DC-DC1 DC-DC2 Instant Buck TM Config 0.6 to 1.8V 0.6 to 1.8V EEPROM 2.5A Interface DVS OTP NVM Bootstrap Config & Unique 4MHz WM8326 RC Oscillator Power ` Control PM Sub- System Monitoring AP Interface, GPIOs and PM Control Aux ADC Real-Time Wake-Up Clock Timer Power Management GND DC-DC3 DC-DC4 ...
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... The WM8326 supports the programming and verification of the integrated OTP memory. A backup battery supply can be connected to the WM8326 in order to maintain the Real Time Clock (RTC) in the absence of the primary supply. The WM8326 provides a battery charger for the backup battery ...
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... WM8326 DESCRIPTION ....................................................................................................... 1 FEATURES............................................................................................................. 1 APPLICATIONS ..................................................................................................... 1 BLOCK DIAGRAM ................................................................................................. 2 TYPICAL APPLICATIONS ..................................................................................... 3 TABLE OF CONTENTS ......................................................................................... 4 PIN CONFIGURATION ........................................................................................... 5 ORDERING INFORMATION .................................................................................. 5 PIN DESCRIPTION ................................................................................................ 6 ABSOLUTE MAXIMUM RATINGS ......................................................................... 9 RECOMMENDED OPERATING CONDITIONS ..................................................... 9 FEATURES OVERVIEW ...................................................................................... 10 POWER MANAGEMENT FUNCTIONS ....................................................................... 10 BUCKWISE™ TECHNOLOGY .................................................................................... 11 NON VOLATILE MEMORY SYSTEM CONFIGURATION ............................................ 12 POWER STATES ........................................................................................................ 13 BACKUP DOMAIN FOR RTC AND SYSTEM CONFIGURATION RETENTION .......... 15 AUXILIARY ADC ...
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... B5 B6 EGP (Exposed Ground Paddle Top View – WM8326 TEMPERATURE PACKAGE RANGE ( -40°C to +85°C 81-lead QFN (8 x 8mm) (Pb-free) -40°C to +85°C 81-lead QFN (8 x 8mm) (Pb-free, tape and reel) -40°C to +85°C 81-lead QFN (8 x 8mm) ...
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... WM8326 PIN DESCRIPTION Notes: 1. Pins are sorted by functional groups. 2. 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. PIN NAME Clocking and Real Time Clock Y12 XTO Analogue Output ...
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... LDO10 Power Output PVDD LDO11 (Alive) Power Output PVDD LDO12 (Internal VPMIC) Output; not for general use PVDD LDO13 (Internal INTVDD) Output; not for general use PVDD LDO13 - Connect to LDO13VOUT1 (W7) WM8326 DESCRIPTION TM EEPROM (ICE) TM EEPROM (ICE) Product Brief, October 2010, Rev 1.0 7 ...
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... WM8326 PIN NAME Voltage and Current References W8 VREFC Analogue I/O Y9 IREFR Analogue I/O System LED Drivers U3 LED1 Digital Output U2 LED2 Digital Output System Power U1 PVDD1 Y7 PVDD2 V4 PVDD3 W12 BACKUPVDD Exposed EGP Analogue Ground Ground Paddle Do Not Connect A1, A2, B1, C1, DNC D1 TYPE POWER ...
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... The OTP Programming Supply PROGVDD should only be present when programming the OTP. At other times, this pin should be left unconnected. The LDO12VOUT must be overdriven by an external supply when programming the OTP. At other times, the voltage at this pin is driven by the internal circuits of the WM8326. w ...
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... WM8326 FEATURES OVERVIEW POWER MANAGEMENT FUNCTIONS INPUT DESCRIPTION VOLTAGE VOLTAGE DC-DC1, DC-DC2 0.6V to 1.8V PVDD (BuckWise™ Step- (12.5mV steps) down converters) DC-DC3, DC-DC4 0.85V to 3.4V PVDD (Step-down (25mV steps) converters) 0.9V to 3.3V 1.5V to LDO1 PVDD (50/100mV steps) 0.9V to 3.3V 1.5V to LDO2, LDO3 PVDD (50/100mV steps) 0.9V to 3.3V LDO4, LDO5, 1 ...
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... LDO6) and low-noise analogue LDOs (LDO7 - LDO10). The analogue LDOs offer superior PSRR, noise and load-transient performance. LDO11 is a low power LDO intended for powering “always on” circuits connected to the WM8326; this LDO can be configured to remain enabled in the OFF state. These power management components are designed to support application processors and associated peripherals. DC-DC1 and DC-DC2 are intended to provide power to the processor voltage domains ...
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... All main application processor start-up requirements are accommodated with 5 startup/shutdown timeslots and flexible GPIO and Interrupt model The WM8326 is a highly configurable device which can be tailored specifically to the requirements of a complex system application. The sequencing and voltage control of the integrated DC-DC Converters and LDO Regulators in the ON, OFF, and SLEEP power state conditions can be programmed in 5 startup and shutdown timeslots ...
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... Product Preview For production use, the WM8326 the on-chip non volatile memory is typically used, in which the essential parameters for starting up the device can be programmed. This allows the WM8326 to start up and shut down the system with no dependency on any other devices for application-specific configuration parameters. The WM8326 can be supplied unprogrammed or with the customer’ ...
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... WM8326 Figure 2 Power States and Transitions State transitions to/from the NO POWER state are controlled automatically by the internal supply (VPMIC) voltage generated by LDO12. The device is in the NO POWER state when this voltage is below the Power-On Reset (POR) threshold. State transitions to/from the BACKUP state are controlled automatically by the internal supply (VPMIC) voltage generated by LDO12 ...
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... Monitors external sources, plus key internal parameters and voltages • 4 digital comparators with selectable input source The WM8326 incorporates a 12-bit Auxiliary ADC (AUXADC). This can be used to perform a number of system measurements (backup battery voltage or chip temperature) and can also be used to measure analogue voltages from external sources and sensors. ...
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... GPIO control for regulator functions for lower latency/flexibility GPIOS The WM8326 has 12 general-purpose input/output (GPIO) pins, GPIO1 - GPIO12. These can be configured as inputs or outputs, active high or active low, with optional on-chip pull-up or pull-down resistors. GPIO outputs can either be CMOS driven or Open Drain configuration. Each GPIO pin can be tri-stated and can also be used to trigger Interrupts ...
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... I2C slave SCLK1 / CS Device ID 34h CIFMODE 2 wire I2C PROGVDD w CPU Internal Logic & Caches Memory NOR / DDR_SDRAM WM8326 Backup Battery WM8326 Memory NOR / DDR_SDRAM LED2 Power status LED1 EGP (Exposed Ground Paddle) VREFC IREFR LDO13VOUT2 LDO13VOUT1 LDO12VOUT LDO9_10VDD DCDC3VOUT DBVDD2 ...
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... WM8326 PACKAGE DIAGRAM FL: 81 PIN QFN PLASTIC PACKAGE 8 D2 eee 3.675 A11 A10 3.175 B10 B9 B8 B11 2.675 D3 D2 DETAIL B 2.025 DETAIL EXPOSED 1.375 H3 H2 GND PADDLE 0.725 K3 K2 0.075 0.575 N3 N2 1.225 R3 R2 1.875 ...
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... Wolfson is not liable for any such representations, warranties or liabilities or for any reliance placed thereon by any person. ADDRESS: Wolfson Microelectronics plc Westfield House 26 Westfield Road Edinburgh EH11 2QB United Kingdom Tel :: +44 (0)131 272 7000 Fax :: +44 (0)131 272 7001 Email :: sales@wolfsonmicro.com w WM8326 Product Brief, October 2010, Rev 1.0 19 ...