ACT5880 Ver la hoja de datos (PDF) - Active-Semi, Inc
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ACT5880 Datasheet PDF : 87 Pages
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ACT5880
Rev 2, 03-Sep-13
PIN DESCRIPTIONS
PIN NAME
DESCRIPTION
H6 VALIVE The Always-On Low Power LDO Output. Bypass to GA with a 1μF high quality ceramic capacitor.
H7
AUX0 The Auxiliary ADC Input AUX0.
H8
GD
The Ground Node of the ADC Circuit in the IC.
H9
XPOS
One of ADC Input, Internally Configured as the Touch Screen Force-Sense Node XPOS with an
internal force switch.
J1
CLK32
The 32kHz Oscillation Output, OD. A pull-up resistor at load end in range of 150kΩ to 300kΩ is
recommended.
J2
VP1 The Switch Power Input Node of the Step-down DC/DC REG1. Same function as pin H2.
J3
OUT1 The Step-down DC/DC REG1 Feedback Node. Connect it to the output node of REG1.
J4
XTAL-
The 32kHz Oscillator Crystal Node. This node is pick-up node. Connect it to any terminal of an
external crystal.
J5
XTAL+
The 32kHz Oscillator Crystal Node. This node is driving node. Connect it to any terminal of an
external crystal.
The Back-up Battery Node. Connect it to the positive node of a back-up battery or storage super cap.
J6 VBBAT The back-up battery charger circuit charges battery or super cap at this node with limited current
and outputs a programmable voltage after charging for powering the always-on low power LDO.
J7
AUX1 The Auxiliary ADC Input AUX1.
J8 BBCIN The Back-up Battery Charger Circuit Input. Bypass to GA with a 1μF high quality ceramic capacitor.
J9
AUX2 The Auxiliary ADC Input AUX2.
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