User's Manual
7
16
GPIOF_5
EEPROM_SEL
0:Internal NV memory select
1:External EEPROM select
Define：pull-down
17
GND
Ground pin
18
NC
NC
19
NC
NC
20
NC
NC
21
NC
NC
22
NC
NC
23
NFC_IN
NFC+
24
NFC_IP
NFC‐
25
NC
NC
26
GPIOB_0
BOOT_SCENARIO
0:booting from internal memory
1:booting flash
Define: pull-down
27
GPIOB_1
GPIO
28
NC
NC
29
NC
NC
30
NC
NC
31
VDD
VCC（DC_3.3V）
32
GND
Ground pin
33
NC
NC
34
VDD
VCC（DC_3.3V）
35
GPIOC_5
GPIO
36
NC
NC
37
NC
NC
38
GPIOB_2
NORMAL_MODE_SEL
0:Normal operation mode
1:Enter into debug mode
Define：pull-down
39
UART2_TX/GPIOA_4
UART2/IOPIN
40
UART2_RTS/GPIOA_2
UART2/IOPIN
41
UART2_RX/GPIOA_0
UART2/IOPIN
42
UART2_CTS/GPIOA_1
UART2/IOPIN
43
GPIOA_5（nLink）
WIFILED
“0”WIFInoConnection
“1”WIFIConnection
44
GPIOA_3（nReady）
Modulestartupinstructions
“0:start
“1”nostart
45
GPIOB_3（nReload）
Restorefactorysettings