Product Info

Automotive Module Series
AG521R-NA QuecOpen Hardware Design
AG521R-NA_QuecOpen_Hardware_Design 42 / 104
V
IL
≤
0.63 V
V
IH
≥
1.17 V
VBAT
PWRKEY
RESET
I nactive
ActiveUART
Note 1
I nactive
Active
USB
TBD
TBD
VDD_EXT
TBD
≥ 500 ms
Figure 12: Power-on Timing
1. Please make sure that VBAT is stable for at least 30 ms before pulling down PWRKEY pin.
2. It is recommended to use an external OD/OC circuit to control the PWRKEY pin.
3.7.2. Turn on Module with PON_1
Table 9: PON_1 Pin Description
Pin Name
Pin No.
Description
Comment
PON_1
248
Driving it high will turn on the module
automatically
Valid trigger range:
0.78 V~1.89 V.
When the module is powered off, drive PON_1 high for at least 500 ms will turn on the module automatically. A
simple reference circuit is illustrated in the following figure.
NOTES