4.
Pin Description
PIN
Pin Function
Description
1
VCC
DC3.3V
2
GND
GND
3
KEY IN0
Key Data IN
4
KEY IN1
Key Data IN
5
KEY IN2
Key Data IN
6
KEY IN3
Key Data IN
7
CHARGE
Charging Detect
High : Not charging
Low : Charging
8
POWER ON
Power On
High : System ON
Low : System OFF
9
POWER SW
Power SW
High : Default
Low : Power SW On
10
UART RX
UART RX : Program download
11
UART TX
UART TX : Program download
12
BOOT
Low : Program Download Mode
High : Not Program Download Mode
13
ADC IN
Voice Input
14
LOW BATT CHECK
High : Full Charge
Low : Charging
15
LED0(GREEN)
Not Link : Red,Green Toggle Turn On,Off
Link : Green Toggle Turn On,Off
Charging : Red Turn On
16
LED1(RED)
Not Link : Red,Green Toggle Turn On,Off
Link : Green Toggle Turn On,Off
17
KEY OUT3
Key Out
18
KEY OUT2
Key Out
19
KEY OUT1
Key Out
20
KEY OUT0
Key Out
