MAX16070/MAX16071 12-Channel/8-Channel, Flash-Configurable System Managers with Nonvolatile Fault Registers General Description Features The MAX16070/MAX16071 flash-configurable sys- S Operate from 2.8V to 14V tem monitors supervise multiple system voltages. The S 2.5% Current-Monitoring Accuracy MAX16070/MAX16071 can also accurately monitor S 1% Accurate 10-Bit ADC Monitors 12/8 Voltage (Q2.5%) one current channel using a dedicated high- Inputs side current-sense amplifier. The MAX16070 monitors up to twelve system voltages simultaneously, and the S Single-Ended or Differential ADC for System Voltage/Current Monitoring MAX16071 monitors up to eight supply voltages. These devices integrate a selectable differential or single-end- S Integrated High-Side, Current-Sense Amplifier ed analog-to-digital converter (ADC). Device configura- S 12/8 Monitored Inputs with Overvoltage/ tion information, including overvoltage and undervoltage Undervoltage/Early Warning Limit limits and timing settings are stored in nonvolatile flash S Nonvolatile Fault Event Logger memory. During a fault condition, fault flags and channel voltages can be automatically stored in the nonvolatile S Two Programmable Fault Outputs and One Reset flash memory for later read-back. Output The internal 1% accurate 10-bit ADC measures each S Eight General-Purpose Inputs/Outputs input and compares the result to one overvoltage, one Configurable as: undervoltage, and one early warning limit that can be Dedicated Fault Outputs Watchdog Timer Function configured as either undervoltage or overvoltage. A fault Manual Reset signal asserts when a monitored voltage falls outside the Margin Enable set limits. Up to three independent fault output signals are configurable to assert under various fault conditions. S SMBus (with Timeout) or JTAG Interface S Flash Configurable Time Delays and Thresholds Because the MAX16070/MAX16071 support a power- supply voltage of up to 14V, they can be powered S -40NC to +85NC Operating Temperature Range directly from the 12V intermediate bus in many systems. The MAX16070/MAX16071 include eight/six program- Ordering Information mable general-purpose inputs/outputs (GPIOs). GPIOs are flash configurable as dedicated fault outputs, as a PART TEMP RANGE PIN-PACKAGE watchdog input or output, or as a manual reset. MAX16070ETL+ -40NC to +85NC 40 TQFN-EP* The MAX16070/MAX16071 feature nonvolatile fault mem- MAX16071ETL+ -40NC to +85NC 40 TQFN-EP* ory for recording information during system shutdown events. The fault logger records a failure in the internal +Denotes a lead(Pb)-free/RoHS-compliant package. flash and sets a lock bit protecting the stored fault data *EP = Exposed pad. from accidental erasure. An SMBus or a JTAG serial interface configures the MAX16070/MAX16071. The MAX16070/MAX16071 are available in a 40-pin, 6mm x 6mm, TQFN package. Both devices are fully specified from -40NC to +85NC. Applications Networking Equipment Telecom Equipment (Base Stations, Access) Storage/RAID Systems Servers Pin Configuration and Typical Operating Circuits appear at end of data sheet. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maximintegrated.com. 19-5003 Rev 4 11/14MAX16070/MAX16071 12-Channel/8-Channel, Flash-Configurable System Managers with Nonvolatile Fault Registers ABSOLUTE MAXIMUM RATINGS V , CSP, CSM to GND ........................................-0.3V to +15V Input/Output Current .........................................................20mA CC CSP to CSM ..........................................................-0.7V to +0.7V Continuous Power Dissipation (T = +70NC) A MON , GPIO , SCL, SDA, A0, RESET to GND 40-Pin TQFN (derate 26.3mW/NC above +70NC) .......2105mW (programmed as open-drain outputs) .................-0.3V to +6V Operating Temperature Range .......................... -40NC to +85NC EN, TCK, TMS, TDI to GND ....................................-0.3V to +4V Junction Temperature ....................................................+150NC DBP, ABP to GND .....-0.3V to the lower of +4V or (V + 0.3V) Storage Temperature Range ............................ -65NC to +150NC CC TDO, GPIO , RESET Lead Temperature (soldering, 10s) ................................+300NC Soldering Temperature (reflow) ......................................+260NC (programmed as push-pull outputs) .... -0.3V to (V + 0.3V) DBP Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = 2.8V to 14V, T = -40NC to +85NC, unless otherwise specified. Typical values are at V = V = V = 3.3V, T = +25NC.) CC A ABP DBP CC A (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Reset output asserted low 1.2 Operating Voltage Range V V CC (Note 2) 2.8 14 Minimum voltage on V to ensure the CC Undervoltage Lockout (Rising) V 2.7 V UVLO device is flash configurable Undervoltage Lockout Hysteresis V 100 mV UVLO HYS Minimum Flash Operating Minimum voltage on V to ensure flash CC V 2.7 V flash Voltage erase and write operations No load on output pins 4.5 7 Supply Current I mA CC During flash writing cycle 10 14 ABP Regulator Voltage V C = 1F, no load, V = 5V 2.85 3 3.15 V ABP ABP CC DBP Regulator Voltage V C = 1F, no load, V = 5V 2.8 3 3.1 V DBP DBP CC Boot Time t V > V 200 350 s BOOT CC UVLO Flash Writing Time 8-byte word 122 ms Internal Timing Accuracy (Note 3) -8 +8 % V EN voltage rising 1.41 TH EN R EN Input Voltage V V EN voltage falling 1.365 1.39 1.415 TH EN F EN Input Current I -0.5 +0.5 A EN Input Voltage Range 0 5.5 V 2 Maxim Integrated