Quectel BC68 Hardware Design

GSM/GPRS Module Series
M66 Hardware Design
M66_Hardware_Design Confidential / Released 17 / 80
3.1.2. Pin Description
Table 3: IO Parameters Definition
Type
Description
IO
Bidirectional input/output
DI
Digital input
DO
Digital output
PI
Power input
PO
Power output
AI
Analog input
AO
Analog output
Table 4: Pin Description
Power Supply
PIN Name
PIN No.
I/O
Description
DC Characteristics
Comment
VBAT
42,43
PI
Main power supply of
module:
VBAT=3.3V~4.6V
V
I
max=4.6V
V
I
min=3.3V
V
I
norm=4.0V
Make sure that
supply
sufficient
current in a
transmitting
burst typically
rises to 1.6A.
VRTC
44
IO
Power supply for RTC when
VBAT is not supplied for the
system.
Charging for backup battery or
golden capacitor when the
VBAT is applied.
V
I
max=3.3V
V
I
min=1.5V
V
I
norm=2.8V
V
O
max=3V
V
O
min=2V
V
O
norm=2.8V
I
O
max=2mA
Iin≈10uA
If unused, keep
this pin open.
VDD_
EXT
24
PO
Supply 2.8V voltage for
external circuit.
V
O
max=2.9V
V
O
min=2.7V
V
O
norm=2.8V
I
O
max=20mA
1. If unused,
keep this pin
open.
2. Recommend
to add a
Quectel
Confidential

Quectel BC68 Specifications

General

Brand	Quectel
Model	BC68
Category	Control Unit
Language	English