HC-21 (TLN13UA06) is a Department of Science and Technology
launched a new commitment of the third generation of embedded
UART-WiFi module products.
Product Features
1: Operating voltage 3.3V ± 0.3 V.
2: The average power 420mw.
3: Operating Humidity 5% to 90% (non-condensing).
4: Operating temperature -55 °C ~ + 125 °C .
5: Dimensions 20mm * 37mm.
6: Interface Type Standard 3.3VTTL level, UART interface.
Module DC supply voltage 3.3V, standard serial interface signal
voltage TTL level.
Module maximum operating current of about 250mA, in
the design of the power supply circuit should be noted that the
power consumption to meet the module.
nRESET pin can be left unconnected, it is recommended
that this pin is connected to the MCU, so the module can be reset
if necessary.
Note: Pin (8 to 5) for standard TTL level serial communications,
pins (4 to 1) as an optional feature pins.
Without the use of multi-purpose floating pins can not affect the
normal operation of the module.
