Huawei MU509 - Page 30

HUAWEI 30 mm × 30 mm LGA Module
Hardware Migration Guide
LGA Interface Differences
Issue 08 (2016-12-12)
HUAWEI Proprietary and Confidential
Copyright © HUAWEI Technologies Co., Ltd.
30
Table 2-10 Differences of the GPIO interface
Pin
No.
Interface
Name
MU509
MC509
MU609
ME209u-
526
ME909u
MU709
ME909s
44
GPIO
GPIO
CMOS 2.6 V
N
N
43
GPIO
Reserved
Reserved
Reserved
GPIO
46
GPIO
CMOS 2.6 V
N
GPIO
51
GPIO
CMOS 2.6 V
CMOS 1.8 V
CMOS
1.8 V
55
GPIO
CMOS 2.6 V
CMOS 1.8 V
CMOS
1.8 V
105
GPIO
CMOS 2.6 V
CMOS 1.8 V
CMOS
1.8 V
109
GPIO
CMOS 2.6 V
CMOS 1.8 V
CMOS
1.8 V
113
GPIO
CMOS 2.6 V
CMOS 1.8 V
CMOS
1.8 V

For ME909s, when the GPIO interface is used for input, the module will not respond in
sleep mode (it will resume response after being waken up from sleep mode by the
WAKEUP_IN pin) and the module is configured to pull-down inside. In sleep mode, the pull-
down resistance is 5–15 K. For the peripheral circuits, see Figure 2-13 .

For ME909s, when the GPIO interface is used for output and the module is not in sleep
mode, the drive current is 4 mA. When the module is in sleep mode, the drive current is
smaller than 0.1 mA. The resistance is maintained at 5–15 K, as shown in Figure 2-14 .
The output level may be changed if there is a stronger pull-up or pull-down. For the
peripheral circuits, see Figure 2-15 .
Figure 2-13 Reference peripheral circuits when the GPIO interface is used for input