Product Info

Automotive Module Series
AG35 Hardware Design
AG35_Hardware_Design 49 / 129
The reset scenario is illustrated in the following figure.
V
IL
≤ 0.5V
V
IH
≥ 1.3V
VBAT
≥ 150ms
Resetting
Module
Status
Running
RESET_N
Restart
≤ 460ms
Figure 19: Timing of Resetting Module
1. Use RESET_N only when turning off the module by AT+QPOWD command and PWRKEY pin both
failed.
2. Please assure that there is no large capacitance on PWRKEY and RESET_N pins.
3.9. (U)SIM Interface
The (U)SIM interface circuitry meets ETSI and IMT-2000 requirements. Both 1.8V and 3.0V (U)SIM cards
are supported.
Table 10: Pin Definition of (U)SIM Interface
Pin Name
Pin No.
I/O
Description
Comment
USIM_VDD
26
PO
Power supply for (U)SIM card
Either 1.8V or 3.0V is supported
by the module automatically.
USIM_DATA
29
IO
Data signal of (U)SIM card
USIM_CLK
27
DO
Clock signal of (U)SIM card
USIM_RST
28
DO
Reset signal of (U)SIM card
USIM_
PRESENCE
25
DI
(U)SIM card insertion detection
USIM_GND
24
Specified ground for (U)SIM card
NOTES