5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 28 / 79
the module will be immediately placed in a Power On Reset (POR) condition.
CAUTION: Triggering the RESET# signal will lead to the loss of all data in the modem and the removal of
system drivers. It will also disconnect the modem from the network.
Table 8: Definition of RESET_N Pin
The module can be reset by pulling down the RESET_N pin for 200
–700 ms. You can use an open
collector/drain driver or button to control RESET_N pin.
Host
Module
RESET_N
Reset
Logic
GPIO
67
VDD 1.5 V
Reset pulse
200-700 ms
R1
100k
R3
100k
R2
1k
Q1
NPN
Figure 10: Reference Circuit for RESET_N with NPN Driving Circuit
Pin No. Pin Name
Description
DC Characteristics
Comment
67
RESET_N
Reset the module
V
IH(max)
= 1.5 V
V
IH(min)
= TBD
V
IL(max)
= TBD
Internally pulled up to 1.5 V
with a 100 k
Ω resistor
