SE868Kx-Ax Family Product User Guide
1VV0301201 Rev. 5
Page 41 of 83
2021-07-15
Not Subject to NDA
9.2.4.
SE868K7-A Pinout Table
Pin
Signal
Type
Description
Notes
1
Ground
GND
Ground
2
Reserved
RES
EIT0 / GPIO 12 on MT3333
3
Reserved
RES
GPIO9 on MT3333.
4
Reserved
RES
Reserved. Do not connect
5
No Connection
NC
Not connected
6
Ground
GND
Ground
7
Ground
GND
Ground
8
No Connection
NC
Not connected
9
Ground
GND
Ground
10
TX0
O
UART0 Serial Output (Transmit)
11
RX0
I
UART0 Serial Input (Receive)
12
S_RESET
I
System Reset
–
Active Low
13
Reserved
RES
Reserved. Do not connect
3
14
No Connection
NC
Not connected
15
Reserved
RES
Reserved. SPI on MT3333.
16
No Connection
NC
Not connected
17
PPS
O
Pulse Per Second signal
18
No Connection
NC
Not connected
19
Reserved
RES
Reserved. SPI on MT3333.
20
Reserved
RES
GPIO10 on MT3333.
21
Ground
GND
Ground
22
TX1
I/O
UART1 Tx
4
23
RX1
I/O
UART1 Rx
4
24
No Connection
NC
Not connected
25
VCC
PWR
Main power supply
26
No Connection
NC
Not connected
27
No Connection
NC
Not connected
28
Reserved
RES
EIT1 / GPIO13 on MT3333.
29
Reserved
RES
Reserved. SPI on MT3333.
30
Reserved
RES
Reserved. SPI on MT3333.
31
Ground
GND
Ground
32
VBATT
PWR
Backup Power supply
Note 3: Force-On is not implemented in the MT3337
Note 4: TX1/RX1 are UART-only on the MT3337
Table 20: SE868K7-Ax Pinout Table