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MAX16016

Maxim Integrated Products
Part Number MAX16016
Manufacturer Maxim Integrated Products
Description (MAX160xx) Low-Power uP Supervisory Circuits
Published Jul 26, 2009
Detailed Description 19-4145; Rev 2; 10/08 www.DataSheet4U.com Low-Power µP Supervisory Circuits with Battery-Backup Circuit and Chip-Enabl...
Datasheet PDF File MAX16016 PDF File

MAX16016
MAX16016

Overview
19-4145; Rev 2; 10/08 www.
DataSheet4U.
com Low-Power µP Supervisory Circuits with Battery-Backup Circuit and Chip-Enable Gating General Description The MAX16016/MAX16020/MAX16021 supervisory circuits monitor power supplies, provide battery-backup control, and chip-enable (CE) gating to write protect memory in microprocessor (µP)-based systems.
These low-power devices improve system reliability by providing several supervisory functions in a small, single integrated solution.
The MAX16016/MAX16020/MAX16021 perform four basic system functions: 1) Provide a µP reset output during VCC supply powerup, power-down, and brownout conditions.
2) Control VCC to battery-backup switching internally to maintain data or low-power operation for memories, real-time clocks (RTCs), and other digital logic when the main power is removed.
3) Provide memory write protection through internal chip-enable gating during brownout.
4) Provide a combination of additional supervisory functions listed in the Features section.
The MAX16016/MAX16020/MAX16021 operate from a 1.
53V to 5.
5V supply voltage and offer fixed reset thresholds for monitoring 5V, 3.
3V, 3V, 2.
5V, and 1.
8V systems.
Each device is available with either a pushpull or open-drain reset output.
The MAX16016/MAX16020/MAX16021 are available in small TDFN/TQFN packages and are fully specified for an operating temperature range of -40°C to +85°C.
Features o System Monitoring for 5V, 3.
3V, 3V, 2.
5V, or 1.
8V Power-Supply Voltages o 1.
53V to 5.
5V Operating Voltage Range o Low 1.
2µA Supply Current (0.
25µA in BatteryBackup Mode) o 145ms (min) Reset Timeout Period o Battery Freshness Seal o On-Board Gating of CE Signals, 1.
5ns Propagation Delay (MAX16020/MAX16021) o Debounced Manual Reset Input o Watchdog Timer, 1.
2s (typ) Timeout o Power-Fail Comparator and Low-Line Indicator for Monitoring Voltages Down to 0.
6V o Battery-On, Battery-OK, and Battery Test Indicators o Small 10-Pin TDFN or 16-Pin TQFN Packages o UL®-Certified to Conform to I...


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