DS1832 Maxim Integrated Products, DS1832 Datasheet
DS1832
Specifications of DS1832
Available stocks
Related parts for DS1832
DS1832 Summary of contents
Page 1
... Industrial temperature range of - +85 C DESCRIPTION The DS1832 3.3-Volt MicroMonitor monitors three vital conditions for a microprocessor: power supply, software execution, and external override. First, a precision temperature-compensated reference and comparator circuit monitor the status of V power-fail signal is generated which forces the resets to an active state. When V in-tolerance condition, the reset signals are kept in the active state for a minimum of 250 ms to allow the power supply and processor to stabilize ...
Page 2
... The third function is a watchdog timer. The DS1832 has an internal timer that forces the reset signals to the active state if the strobe input is not driven low prior to timeout. The watchdog timer function can be set to operate on timeout settings of approximately 150 ms, 600 ms ...
Page 3
... MICROMONITOR BLOCK DIAGRAM Figure 1 PUSHBUTTON RESET Figure 2 TIMING DIAGRAM: PUSHBUTTON RESET Figure DS1832 ...
Page 4
... WATCHDOG TIMER Figure 4 WATCHDOG TIMEOUTS Table 1 TD GND Float V CC TIMING DIAGRAM: STROBE INPUT Figure 5 TIMING DIAGRAM: POWER DOWN Figure 6 TIMEOUT MIN TYP 62.5 ms 150 ms 250 ms 600 ms 500 ms 1200 DS1832 MAX 250 ms 1000 ms 2000 ms ...
Page 5
... A value of about 100 k =should be adequate in most situations. The output with RST a resistor pull-down can maintain a valid reset down to V Figure Ground (see Figure 8). This arrangement RST during both power-up and power-down but will draw current when RST equal to 0 volts DS1832 . To sink CC ...
Page 6
... C for 10 seconds SYMBOL MIN TYP -0.4 V -0 SYMBOL MIN TYP V 2.80 2.88 CCTP V 2.47 2.55 CCTP I -1 350 -0.3V -0. SYMBOL MIN TYP OUT DS1832 +0. +85 C) MAX UNITS NOTES =1.2V to 5.5V) CC MAX UNITS NOTES MAX UNITS NOTES ...
Page 7
... Measured with V < 2.7V Measured with outputs open Must not exceed t minimum The Watchdog cannot be disabled it must be strobed to avoid resets. 8. Noise immunity - Pulses < MARKING INFORMATION: 8-pin DIP - “DS1832” 8-pin SOIC - “DS1832” 8-pin - -SOP - “1832” SYMBOL MIN 250 RST t ...