6-Channel, Flash-Configurable System Manager with Nonvolatile Fault Registers

The MAX16068 flash-configurable system manager monitors and manages up to six system voltages simultaneously. The MAX16068 integrates an analog-to-digital converter (ADC). Device configuration information, including overvoltage and undervoltage limits, time delay settings is stored in nonvolatile flash memory. During a fault condition, fault flags and channel voltages can be automatically stored in the nonvolatile flash memory for later readback.

The internal 1% accurate, 10-bit ADC measures each input and compares the result to one overvoltage and one undervoltage limit. A fault signal asserts when a monitored voltage falls outside the set limits.

The MAX16068 supports a power-supply voltage of up to 14V and can be powered directly from the 12V intermediate bus in many systems.

The MAX16068 includes six programmable general-purpose inputs/outputs (GPIOs). GPIOs are flash configurable as a fault output, as a watchdog input or output, or as a manual reset.

The MAX16068 features nonvolatile fault memory for recording information during system shutdown events. The fault logger records a failure in the internal flash and sets a lock bit protecting the stored fault data from accidental erasure.

An SMBus™ or a JTAG serial interface configures the MAX16068. The MAX16068 is available in a 28-pin, 5mm × 5mm, TQFN package and is fully specified over the -40°C to +85°C extended temperature range.

Applications

* Networking Equipment * Servers * Storage/RAID Systems * Telecom Equipment (Base Stations, Access)

* Operates from 2.8V to 14V

* 1% Accurate, 10-Bit ADC Monitors 6 Voltage Inputs

* Analog EN Monitoring Input

* 6 Monitored Inputs with Overvoltage and Undervoltage Limits

* Nonvolatile Fault Event Logger

* Six General-Purpose Inputs/Outputs Configurable as:

* Dedicated Fault Output

* Watchdog Timer Function

* Manual Reset

* SMBus Alert

* Fault Propagation Input/Output

* SMBus and JTAG Interface

* Supports Cascading with MAX16065/MAX16066

* Flash-Configurable Time Delays and Thresholds

* -40°C to +85°C Extended Operating Temperature Range