AS1922 查看數據表（PDF） - austriamicrosystems AG
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AS1922 Datasheet PDF : 14 Pages
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AS1920/AS1922
Datasheet - Pinout
4 Pinout
Pin Assignments
Figure 2. Pin Assignments (Top View)
RESETN 1
5 VCC3
GND 2 AS1920/
AS1922
VCCA 3
4 VCC18
Pin Descriptions
Table 2. Pin Descriptions
Pin Number
Pin Name
1
RESETN
2
GND
3
VCCA
4
VCC18
5
VCC3
Description
Reset Logic Output. This active-low pin serves as the 3V push/pull reset
output. A reset is asserted when any one of the supplies are below its
respective trip threshold and the reset is held for 200ms after all power supplies
have stabilized.
Ground.
VCCA. 1V sense, high-impedance input.
Note: If this pin is not used it should be tied to VCC3 or VCC18.
VCC18. 1.8V sense input and power detect pin (AS1920-18, AS1922-18). This
pin provides power to the output reset stage of the device in order to assert a
valid reset when the voltage on the primary input is down.
Note: Bypass this pin to GND with a ≥0.1µF ceramic capacitor.
VCC3. 3V sense input and power supply pin (AS1920-18, AS1922-18). This pin
provides power to the device.
Note: Bypass this pin to GND with a ≥0.1µF ceramic capacitor.
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