Microprocessor power management with Watchdog Timer
The R5104V Series are high voltage tolerance CMOS-based microprocessor power management
ICs with
high accuracy output voltage and detector threshold and with ultra low supply current. Each of these ICs consists
of a voltage regulator, a voltage detector and a watchdog timer. Thus, the R5104V Series have the function of
a
power management for microprocessor, a monitor of the voltage of a power source and a microprocessor
supervisor.
The built-in voltage regulator with an external driver transistor can supply Min.1A current to a system.
Therefore these ICs are very suitable for various power supply systems for microprocessors. The output voltage
is monitored by the voltage detector which is built-in these ICs.
The built-in voltage detector has an output delay function and the delay time can be set by an external
capacitor (CD).
The output voltage and the detector threshold voltage can be set individually for each IC by laser trimming.
Furthermore, when a microprocessor works incorrectly, the watchdog timer which checks over microprocessor
generates reset signals intermittently to prevent a whole system from being malfunction.
The timeout periods for watchdog and reset can also be set individually by an external capacitor (CTW).
There are two kinds of power down function: "A" version turns off the supervisor of clock input for
the
watchdog timer, while the "B" version turns off all the circuits and realizes the standby mode. |
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|
 Low
supply current |
Typ. 60µA (IOUT=0mA) |
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| Standby
Current (B version) |
Typ. 0.1µA |
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| Output
Voltage |
3.3V to 5.0V |
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| Detector
Threshold Voltage |
2.8V to 4.0V |
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| Maximum
Operating Input Voltage |
Max. 36V |
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| High
Accuracy Output Voltage of Voltage Regulator and Detector Threshold |
±2.0% |
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| Built-in
a watchdog timer |
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| Timeout
period for watchdog and generating a reset signal can be set by an external capacitor |
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| Watchdog
timer can be stopped individually by CE Pin |
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| Power-on
Reset Delay Time can be set by an external capacitor |
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| Small
Package |
SSOP-10 |
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Power source for microprocessors
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| * All PDF files are less than 1MB unless otherwise stated. |
| * If you don't have Adobe Reader, you can download free. |
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Please confirm sample availability with your local contact mentioned in our distributors
list.
WDT+VR+VD
| R5104V |
VR |
VD |
| 002A/B |
5.0 |
3.4 |
| 003A/B |
3.3 |
3.0 |
| 004A/B |
5.0 |
3.7 |
| 007A/B |
3.4 |
3.1 |
| 008A/B |
3.4 |
3.0 |
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Product Catalog
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| Selection guide is available for download in PDF format. |
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R5104V
Series
