HANSONG HSBT3031-08, User Manual

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HSBT3031-08 module_datasheet Version2.0– Jun. 15 th
HANSONG ( NANJING) TECHNOLOGY CO.,LTD
9
input/ open drain
output. input or open drain LED output.
13 LED0/AIO0 Analog or digital
input/ open drain
output. General-purpose analog/digital
input or open drain LED output.
14 SYS_CTRL Digital input Typically connected to an
ON/OFF push button. Boots
device in response to a button
press when power is still present
from battery and/or charger but
software has placed the device in
the OFF or DORMANT state.
Additionally useable as a digital
input in normal operation.
No pull.
Additional function:

PIO[0] input only
15 VBAT Supply Battery voltage input.
16 GND GND Common Ground
17 VDD_IO Supply 1.8 V/3.3 V PIO supply.
18 1V8_SMPS Power out 1V8_SMPS out.
19 GND GND Common Ground
20 VCHG Supply Supply to SMPS power switch
from charger input.
21 CHG_EXT Analog External charger transistor current
control. Connect to base of
external charger transistor as per
application schematic.
22 VBAT_SENSE Analog Battery voltage sense input.
23 3V3_LDO Power out Bypass regulator decoupling.
24 USB_N Digital USB Full Speed device D- I/O.
25 USB_P Digital USB Full Speed device D+ I/O.
26 GND GND Common Ground
27 GND GND Common Ground
28 PCM_SYNC Digital: Bidirectional
with programmable
strength internal
pullup/pull-down Programmable I/O line 17.
Alternative function:

PCM_SYNC
29 PCM_CLK Digital: Bidirectional
with programmable
strength internal
pullup/pull-down Programmable I/O line 16.
Alternative function:

PCM_CLK
30 PIO_22 Digital: Bidirectional Programmable I/O line 22.