Data Sheet

ISM4343 Specification
DOC-DS-20074-5.3
Inventek Systems
Page 24
18
GND
-
Ground
19
NC
-
Floating
20
BT_GPIO_3
I/O
WPT_INTb to wireless
charging PMU
21
MICRO_SPI2_MISO
I/O
MICRO_SPI2_MISO
PB14
22
MICRO_SPI2_MOSI
I/O
MICRO_SPI2_MOSI
PB15
23
GND
-
Ground
24
VDD_3V3_3
PI
DC supply for MCU and I/O
25
GND
-
Ground
26
NC
-
Floating
27
GND
-
Ground
28
VDD3V3_WiFi_IO
PI
DC supply for WIFI and I/O
29
GND
-
Ground
30
MICRO_USART1_TX
I/O
MCU_USART1_TX
PA9
31
MICRO_USART1_RX
I/O
MCU_USART1_RX
PA10
32
MICRO_USART1_CTS
I/O
MCU_USART1_ CTS
PA11
33
MICRO_USART1_RTS
I/O
MCU_USART1_ RTS
PA12
34
GND
-
Ground
35
MICRO_JTAG_TMS
I/O
MCU_JATG_TMS
PA13
36
GND
-
Ground
37
MICRO_JTAG_TCK
I/O
MCU_JATG_TCK
PA14
38
MICRO_JTAG_TDI
I/O
MCU_JATG_TDI
PA15
39
GND
-
Ground
40
NC
-
Floating
41
GND
-
Ground
42
VDD3V3_WiFi
PI
Wi-Fi power supply
43
VDD3V3_WiFi
PI
Wi-Fi power supply
44
GND
-
Ground
45
MICRO_JTAG_TDO
I/O
MCU_JATG_TDO
PB3
46
MICRO_JTAG_TRSTN
I/O
MCU_JATG_RSTN
PB4
47
GND
-
Ground
48
VDD_3V3_2
PI
DC supply for MCU and I/O
49
GND
-
Ground
50
QUADSPI_BK1_IO3
I/O
QUADSPI_BK1_IO3
PF6
51
GND
-
Ground
52
NC
-
NC
53
NC
-
NC
54
GND
-
Ground
55
BT_PCM_CLK
I/O
PCM clock; can be master
56
NC
-
Floating