AS1910 - AS1915
Data Sheet - Pinout
4 Pinout
Pin Assignments
Figure 2. Pin Assignments (Top View)
RESETN/RESET
1
2
3
6
5
4
VCC
AS1910 -
AS1915
GND
MRN
RESETIN/VCC2
WDI
Pin Descriptions
Table 2. Pin Descriptions
Pin
Number
Pin
Name
Description
Active-Low Reset Output (AS1910, AS1912, AS1913, AS1915). The RESETN signal
toggles from high to low when VCC, VCC2, or RESETIN input drops below the factory-trimmed
reset threshold (see Table 4 on page 4), or MRN is pulled low, or the watchdog triggers a
reset. This output signal remains low for the reset timeout period after all supervised voltages
exceed their reset threshold, or MRN goes low to high, or the watchdog triggers a reset.
RESETN
1
Active-High Reset Output (AS1911, AS1914). The RESET signal toggles from low to high
when VCC, VCC2, or RESETIN input drops below the factory-trimmed reset threshold (see
Table 4 on page 4), or MRN is pulled low, or the watchdog triggers a reset. This output signal
remains high for the reset timeout period (see tRP on page 5) after all supervised voltages
exceed their reset threshold, or MRN goes low to high, or the watchdog triggers a reset.
RESET
GND
Ground
2
3
Active-Low Manual Reset Input. Pulling this pin low asserts a reset. This pin is connected
to the internal 50kΩ pullup to VCC. This reset remains active as long as MRN is low and for
the reset timeout period (see tRP on page 5) after MRN goes high.
MRN
Note: If the manual reset feature is not used, this pin should be unconnected or connected
to VCC.
Watchdog Input. If WDI remains high or low for longer than the watchdog timeout period
(see tWD on page 6), the internal watchdog timer period expires and a reset is triggered for
the reset timeout period (see tRP on page 5). The internal watchdog timer clears whenever a
reset is a asserted or when WDI senses a rising or falling edge.
4
WDI
Note: To disable the watchdog feature, this pin must be unconnected or connected to a tri-
state buffer output.
User-Adjustable Supervised Voltage Input (AS1910/AS1911/AS1912). This high-
impedance pin serves as the input to the internal reset comparator. Connect this pin to an
external resistor-divider network to set the reset threshold voltage (down to 0.63V).
RESETIN
5
6
Primary Supervised Voltage Input (AS1913/AS1914/AS1915). This pin serves as the
secondary supervised voltage input.
VCC2
VCC
Primary Supervised Voltage Input. This pin serves as the primary supervised voltage input.
www.austriamicrosystems.com
Revision 1.00
2 - 15
AMSCO [ AMS(艾迈斯) ]
