UMTS/HSPA(+) Module Series
UC200T-EM Hardware Design
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3.15.
STATUS
The STATUS pin is an open drain output signal for indicating the module’s operation status. It can be
connected to a GPIO of DTE with a pulled-up resistor, or as LED indication circuit as below. When the
module is turned on normally, the STATUS will present the low state. Otherwise, the STATUS will present
high-impedance state.
Table 20: Pin Definition of STATUS
Pin Name Pin No.
I/O
Description
Comment
STATUS
61
OD
Indicate the module operation status
An external pull-up resistor
is required.
If unused, keep it open.
The following figure shows different circuit designs of STATUS, and customers can choose either one
according to the application demands.
VDD_MCU
10K
Module
STATUS
MCU_GPIO
Module
STATUS
VBAT
2.2K
Figure 18: Reference Circuits of STATUS
It is prohibited to supply any voltage to STATUS pin when VBAT is removed.
3.16.
SLEEP_IND*
The SLEEP_IND pin is used for indicating the module’s sleep status. When the module is entered into
sleep mode, the SLEEP_IND will present a high level.
NOTE
