Super Sequencer with Voltage Readback ADC Data Sheet ADM1064 FEATURES FUNCTIONAL BLOCK DIAGRAM AUX1 AUX2 REFIN REFOUT REFGND SDA SCL A1 A0 Complete supervisory and sequencing solution for up to 10 supplies ADM1064 VREF SMBus INTERFACE 10 supply fault detectors enable supervision of supplies to <0.5% accuracy at all voltages at 25C 12-BIT EEPROM <1.0% accuracy across all voltages and temperatures SAR ADC 5 selectable input attenuators allow supervision of supplies to VX1 PDO1 CONFIGURABLE DUAL- 14.4 V on VH OUTPUT PDO2 FUNCTION VX2 DRIVERS INPUTS PDO3 6 V on VP1 to VP4 (VPx) VX3 PDO4 (LOGIC INPUTS (HV CAPABLE OF 5 dual-function inputs, VX1 to VX5 (VXx) VX4 OR PDO5 DRIVING GATES SFDs) OF N-FET) VX5 PDO6 High impedance input to supply fault detector with SEQUENCING ENGINE thresholds between 0.573 V and 1.375 V VP1 PDO7 CONFIGURABLE PROGRAMMABLE OUTPUT General-purpose logic input VP2 RESET DRIVERS PDO8 VP3 GENERATORS 10 programmable driver outputs, PDO1 to PDO10 (PDOx) (LV CAPABLE PDO9 VP4 (SFDs) OF DRIVING Open-collector with external pull-up LOGIC SIGNALS) VH PDO10 Push/pull output, driven to VDDCAP or VPx AGND PDOGND Open collector with weak pull-up to VDDCAP or VPx VDD VDDCAP ARBITRATOR Internally charge-pumped high drive for use with external N-FET (PDO1 to PDO6 only) VCCP GND SE implements state machine control of PDO outputs Figure 1. State changes conditional on input events GENERAL DESCRIPTION Enables complex control of boards Power-up and power-down sequence control The ADM1064 Super Sequencer is a configurable supervisory/ Fault event handling sequencing device that offers a single-chip solution for supply Interrupt generation on warnings monitoring and sequencing in multiple supply systems. In addition Watchdog function can be integrated in SE to these functions, the ADM1064 integrates a 12-bit ADC that Program software control of sequencing through SMBus can be used to accurately read back up to 12 separate voltages. 12-bit ADC for readback of all supervised voltages The device also provides up to 10 programmable inputs for moni- 2 auxiliary (single-ended) ADC inputs toring undervoltage faults, overvoltage faults, or out-of-window Reference input (REFIN) has 2 input options faults on up to 10 supplies. In addition, 10 programmable outputs Driven directly from 2.048 V (0.25%) REFOUT pin can be used as logic enables. Six of these programmable outputs can More accurate external reference for improved ADC provide up to a 12 V output for driving the gate of an N-FET performance that can be placed in the path of a supply. Device powered by the highest of VPx, VH for improved For more information about the ADM1064 register map, refer redundancy to the AN-698 Application Note. User EEPROM: 256 bytes Industry-standard 2-wire bus interface (SMBus) Guaranteed PDO low with VH, VPx = 1.2 V Available in 40-lead LFCSP and 48-lead TQFP packages APPLICATIONS Central office systems Servers/routers Multivoltage system line cards DSP/FPGA supply sequencing In-circuit testing of margined supplies Rev. E Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20042015 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. MUX 04633-001ADM1064 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Default Output Configuration .................................................. 18 Functional Block Diagram .............................................................. 1 Sequencing Engine ......................................................................... 19 Applications ....................................................................................... 1 Overview ..................................................................................... 19 General Description ......................................................................... 1 Warnings...................................................................................... 19 Revision History ............................................................................... 3 SMBus Jump (Unconditional Jump) ........................................ 19 Detailed Block Diagram .................................................................. 4 Sequencing Engine Application Example ............................... 20 Specif icat ions ..................................................................................... 5 Fault and Status Reporting ........................................................ 21 Absolute Maximum Ratings ............................................................ 8 Voltage Readback............................................................................ 22 Thermal Resistance ...................................................................... 8 Supply Supervision with the ADC ........................................... 22 ESD Caution .................................................................................. 8 Applications Diagram .................................................................... 23 Pin Configurations and Function Descriptions ........................... 9 Communicating with the ADM1064 ........................................... 24 Typical Performance Characteristics ........................................... 11 Configuration Download at Power-Up ................................... 24 Powering the ADM1064 ................................................................ 14 Updating the Configuration ..................................................... 24 Slew Rate Consideration ............................................................ 14 Updating the Sequencing Engine ............................................. 25 Inputs ................................................................................................ 15 Internal Registers ........................................................................ 25 Supply Supervision ..................................................................... 15 EEPROM ..................................................................................... 25 Programming the Supply Fault Detectors ............................... 15 Serial Bus Interface ..................................................................... 25 Input Comparator Hysteresis .................................................... 15 SMBus Protocols for RAM and EEPROM .............................. 28 Input Glitch Filtering ................................................................. 16 Write Operations ........................................................................ 28 Supply Supervision with VXx Inputs ....................................... 16 Read Operations ......................................................................... 30 VXx Pins as Digital Inputs ........................................................ 17 Outline Dimensions ....................................................................... 31 Outputs ............................................................................................ 18 Ordering Guide .......................................................................... 31 Supply Sequencing Through Configurable Output Drivers ...... 18 Rev. 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