DS1231S-500/T&R Maxim Integrated, DS1231S-500/T&R Datasheet
![no-image](/images/no-image-200.jpg)
DS1231S-500/T&R
Specifications of DS1231S-500/T&R
Related parts for DS1231S-500/T&R
DS1231S-500/T&R Summary of contents
Page 1
... TOL 11 RST GND 8 RST DS1231S 16–Pin SOIC (300 MIL) See Mech. Drawings Section PIN DESCRIPTION IN – Input MODE – Selects input pin characteristics TOL – Selects 5% or 10% V detect CC GND – Ground RST – Reset (Active High) RST – ...
Page 2
DS1231/S OPERATION The DS1231 Power Monitor detects out-of-tolerance power supply conditions and warns a processor-based system of impending power failure. The main elements of the DS1231 are illustrated in Figure 1. As shown, the DS1231 actually has two comparators, one ...
Page 3
POWER MONITOR BLOCK DIAGRAM Figure NMI MODE SELECTION GND TOLERANCE TOL BIAS 3 T.C. REFERENCE POWER-UP RESET Figure 2 DS1231 IN V MODE NMI TOL RST GND RST (-5% ...
Page 4
DS1231/S INPUT PIN HYSTERESIS Figure 3 NMI MODE = GND + TP NMI MODE = + ...
Page 5
APPLICATION – MODE PIN CONNECTED TO GROUND When the Mode pin is connected to ground, pin current source with 2.5 volts. Pin held below the trip point ...
Page 6
DS1231/S APPLICATION WITH MODE PIN GROUNDED Figure 6 VOLTAGE SENSE POINT VOLTAGE SENSE POINT (TRIP VALUE) IC CTR CTR CURRENT TRANSFER RATIO IF VZ ZENNER VOLTAGE EXAMPLE: CTR = 0 150 ...
Page 7
ABSOLUTE MAXIMUM RATINGS* Voltage on V Pin Relative to Ground CC Voltage on I/O Relative to Ground Operating Temperature Operating Temperature (Industrial Version) Storage Temperature Soldering Temperature * This is a stress rating only and functional operation of the device ...
Page 8
DS1231/S AC ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL V to NMI Delay t TP IPD V Slew Rate 4.75-4.25V Detect to RST and RST t CC RPD V Detect to NMI t CC IPU V Detect to RST ...
Page 9
TIMING DIAGRAM: POWER-DOWN V TP INPUT PIN 1 MODE=V CC INPUT PIN 1 MODE=GND IPD NMI 4.75V RST RST CCTP 4.25V t RPD RST SLEWS WITH ...