MAX16047A/MAX16049A 19-5250 Rev 1 9/10 12-Channel/8-Channel EEPROM-Programmable System Managers with Nonvolatile Fault Registers General Description Features The MAX16047A/MAX16049A EEPROM-configurable sys- Operate from 3V to 14V tem managers monitor, sequence, and track multiple sys- 1% Accurate 10-Bit ADC Monitors 12/8 Inputs tem voltages. The MAX16047A manages up to twelve system voltages simultaneously, and the MAX16049A 12/8 Monitored Inputs with One Overvoltage/ manages up to eight supply voltages. These devices inte- One Undervoltage/One Selectable Limit grate an analog-to-digital converter (ADC) for monitoring Nonvolatile Fault Event Logger supply voltages, and configurable outputs for sequencing and tracking supplies (during power-up and power- Power-Up and Power-Down Sequencing down). Nonvolatile EEPROM registers are configurable for Capability storing upper and lower voltage limits, setting timing and 12/8 Outputs for Sequencing/Power-Good sequencing requirements, and for storing critical fault data for read back following failures. Indicators An internal 1% accurate 10-bit ADC measures each input Closed-Loop Tracking for Up to Four Channels and compares the result to one upper, one lower, and Two Programmable Fault Outputs and One Reset one selectable upper or lower limit. A fault signal asserts Output when a monitored voltage falls outside the set limits. Up to three independent fault output signals are configurable Six General-Purpose Input/Outputs Configurable as: to assert under various fault conditions. Dedicated Fault Output The integrated sequencer/tracker allows precise control Watchdog Timer Function over the power-up and power-down order of up to twelve Manual Reset (MAX16047A) or up to eight (MAX16049A) power sup- 2 plies. Four channels (EN OUT1EN OUT4) support I C/SMBus-Compatible and JTAG Interface closed-loop tracking using external series MOSFETs. Six EEPROM-Configurable Time Delays and outputs (EN OUT1EN OUT6) are configurable with Thresholds charge-pump outputs to directly drive MOSFETs without closed-loop tracking. 100 Bytes of Internal User EEPROM The MAX16047A/MAX16049A include six programma- 56-Pin (8mm x 8mm) TQFN Package ble general-purpose inputs/outputs (GPIOs). In addition -40C to +125C Operating Temperature Range to serving as EEPROM-configurable I/O pins, the GPIOs are also configurable as dedicated fault outputs, Applications as a watchdog input or output (WDI/WDO), or as a Servers manual reset (MR). Workstations The MAX16047A/MAX16049A feature two methods of fault management for recording information during criti- Storage Systems cal fault events. The fault logger records a failure in the Networking/Telecom internal EEPROM and sets a lock bit protecting the stored fault data from accidental erasure. Ordering Information 2 An I C/SMBus-compatible or a JTAG serial interface configures the MAX16047A/MAX16049A. These devices PART TEMP RANGE PIN-PACKAGE are offered in a 56-pin, 8mm x 8mm TQFN package and MAX16047ATN+ -40C to +125C 56 TQFN-EP* are fully specified from -40C to +125C. MAX16049ATN+ -40C to +125C 56 TQFN-EP* +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed Pad. SMBus is a trademark of Intel Corp. Selector Guide appears at end of data sheet. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLEMAX16047A/MAX16049A 12-Channel/8-Channel EEPROM-Programmable System Managers with Nonvolatile Fault Registers Typical Operating Circuit V SUPPLY 10F OUT IN DC-DC +3.3V MON1 V CC EN GND EN OUT1 V CC SCL OUT IN MON2MON11 SDA DC-DC MAX16047A RESET RESET EN GND C INT FAULT I/O WDI EN OUT2 WDO INT EN OUT11 OUT MON12 IN ABP DC-DC DBP 1F 1F EN GND A0 EN OUT12 GND EN 2 MAX16047A/MAX16049A