User's Manual

User Guide
87 Ground G Ground
88 N.C No connection
89 N.C No connection
90 N.C No connection
91 N.C No connection
92 Ground G Ground
93 N.C No connection
94 N.C No connection
95 Ground G Ground
96 GPIO11 I/O General-purpose I/O
97 Ground G Ground
98 N.C No connection
99 N.C No connection
100 N.C No connection
3. CZ3730A Module Electrical Characteristics
3.1 DC characteristics
Recommended Operating Conditions
Symbol Parameter Min. Nom. MAX. Unit
VBAT 2.9 3.3 3.7 V
VIO 1.62 1.8 1.92 V
LS_VIO 3.3 5 V
3.2 External Slow clock Input (RTC Clock)
The external slow clock input should be present at all times. The slow clock is used to maintain timers that
synchronize the device to the access point beacons.
Slow Clock is a digital square-wave in the range of 0`1.8V nom.
Parameter Condition Sym Min. Nom. MAX. Unit
Input slow clock frequency 32768 Hz
Input slow clock accuracy
(Initial + temp + aging)
WLAN,BT ±250
ppm
ANT ±50
Input transition time Tr/Tf-10%
to 90%
Tr/Tf 100 ns
Frequency input duty cycle 15 50 85 %
Input voltage limits
Square wave
DC-coupled
Vih
0.65
xVIO
VIO
Vpeak
Vil 0 0.35xVIO
Input impedance 1 MΩ
Input capacitance 5 pF