Microprocessor Supervisory Circuit
Technical coantmesntAsGtill valid
Datasheet
AS1916 - AS1918
Microprocessor Supervisory Circuits with Manual Reset and W...
Description
Technical coantmesntAsGtill valid
Datasheet
AS1916 - AS1918
Microprocessor Supervisory Circuits with Manual Reset and Watchdog
1 General Description
The AS1916 - AS1918 microprocessor supervisory circuits were designed to generate a reset when the monitored supply voltage falls below a factory-trimmed threshold. The reset remains asserted for a minimum timeout period after the supply voltage stabilizes.
Guaranteed to be in the correct state for VCC higher than +1.0V, these devices are ideal for portable and battery-powered systems with strict monitoring requirements.
The devices feature factory-trimmed thresholds to monitor a supply voltage between 1.8 and 3.6V.
The devices are available with the reset output types listed in Table 1.
Table 1. Standard Products
Model
Reset Output Type
AS1916
Active-Low Push/Pull
AS1917
Active-High Push/Pull
AS1918
Active-Low Open-Drain
The AS1916 - AS1918 include a manual-reset input for systems that never fully power down the microprocessor.
Additionally, these devices feature a watchdog timer to help ensure that the processor is operating within proper code boundaries.
The AS1916 - AS1918 are available in a 5-pin SOT23 package.
2 Key Features
VCC Supervisory Range: +1.8 to +3.6V Guaranteed Reset Valid Down to VCC = +1.0V Reset Timeout Delay: 215ms Manual Reset Input Three Reset Output Types - Active-Low Push/Pull (AS1916) - Active-High Push/Pull (AS1917) - Active-Low Open-Drain (AS1918)
Watchdog Timeout Period: 1.5s Immune to Fa...
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