User's Manual

M80 Hardware Design
M80_HD_V1.2 - 24 -
backup battery or
golden capacitor
when the VBAT is
supplied.
VOnorm=2.8V
Iout(max)= 730uA
Iin=2.6~5 uA
VDD_EXT
60
O
Supply 2.8V
voltage for external
circuit.
Vmax=2.9V
Vmin=2.7V
Vnorm=2.8V
Imax=20mA
1. If unused,
keep this pin
open.
2. Recommended
to add a
2.2~4.7uF
bypass capacitor,
when using this
pin for power
supply.
GND
37,
61,
62,
64,
65,
66,
93,
94
Ground
Charge interface
PIN NAME
PIN
NO.
I/O
DESCRIPTION
DC
CHARACTERISTICS
COMMENT
GATDRV
74
O
Charge driving
CHGLDO
73
I
Charger power
supply source
CHGDET
72
I
Charger detection
ISENSE
71
I
Current sense pin
BATSNS
70
I
VBAT voltage
sense pin
Turn on/off
PIN NAME
PIN
NO.
I/O
DESCRIPTION
DC
CHARACTERISTICS
COMMENT
PWRKEY
15
I
Power on/off key.
PWRKEY should
be pulled down for
a moment to turn
on or off the
system.
VILmax=
0.1×VBAT
VIHmin=
0.6×VBAT
VImax=VBAT
Pulled up to
VBAT internally.
Emergency shutdown
PIN NAME
PIN
I/O
DESCRIPTION
DC
COMMENT