User Manual

G610 GPRS Module Hardware User Manual Page 37 of 47
default state. Do not connect any components to, or apply any voltage on, signals that are not used
by the application.
G610 Pin# G610 Signal name Description I/O
Reset
level
Idle
level
Level Character
Power
26
BATT DC power supply I 3.3V ~ 4.5V
27
1
GND Ground
21
22
24
25
28
46
8 VBACKUP Real time clock power I/O 2.0V 2.0V
1.86V ~ 2.14V
Output current <3mA
Input current <12uA
29 CHARG_CDT
Charge power detect signal
High level activated
I PD L
30 CHARG_CS
Charge switch control
Extend transistor
I OC/PD L
Control & Status
49 LPG Work mode indicator O CP Wave
VOL
MAX
=0.35V
VOHMIN=VDD-0.35V
9 VDD
LDO power output
Illustrating start up
O 0.3V 2.85V
±3%
Output current <10mA
7 RESET_N
Extend reset**
Low level activated
I PU/HZ H
VIL
MAX
=0.2V
VIHMIN=0.7*VDD
10 POWER_ON
Turn on module
Low level activated
I PU/HZ H
VIL
MAX
=0.2V
VIHMIN=0.7*VDD
220K PU to VBACKUP
Uart (Modem DCE)
45 RXD_N Received Data O CP H
VOL
MAX
=0.35V
VOHMIN=VDD-0.35V
VILMAX=0.2V
VIHMIN=0.7*VDD
44 TXD_N Transmitted Data I CP H
39 RING_N Ring indicator O CP H
38 DSR_N Data Set Ready O CP H
42 RTS_N Request To Send I CP H
40 DTR_N Data Terminal Ready I CP H