SyChip/Murata Confidential Page 10 of 26 SN3020 User Manual 1.0
Pin #
Pin name
I/O
Description
16
Reserved
I/O Not connected in SN3020.
17 GND
- Ground
18 Reserved
O
Used internally as the LNA on (active low), for
debugging use only
19 nRESET
I Module
reset
signal
(Internal
pull-up)
20 GND
- Ground
21 GND
- Ground
22
PA3
I/O Programmable I/O control available to the host,
23 GND
- Ground
24 PC6/OSC32B
I/O
Programmable I/O control available to the host,
or
32.768kHZ crystal
25 PC7/OSC32A
I/O
Programmable I/O control available to the host,
or
32.768kHz crystal
26
SC1SCLK/PB3 I/O
SPI port 1 clock,
or
programmable I/O control available to the host,
27 Reserved
O
Used internally as the serial flash MOSI, for
debugging use only
28 Reserved
O
Used internally as the serial flash MISO, for
debugging use only
29
VBATT
PI
Module power supply
30 Reserved
O Used internally as the serial flash clock, for
debugging use only
31 PA4/ADC4
I/O
Programmable I/O control available to the host,
or ADC input
32 GND
- Ground
33 PA5/ADC5/nBOOTMODE
I/O
Programmable I/O control available to the host,
or
ADC input, or
Boot control, must be left open or pulled
high during the reset to enable the normal
firmware boot process.
