
Pin Name
No.
Description
Pin Name
No.
Description
Note:
1. Connected to pull-up resistor to VDD internally. External pull-up is not required.
2. 50 Ohm-matched RF pin for external antenna support. Connect to GND when not used.
3. The DECOUPLE pin exposes the SoC's on-chip digital supply regulator output and allows introducing an external digital supply
source via a PMIC, for example. The default recommendation is to leave the DECOUPLE pin disconnected.
6.2 Alternate Pin Functions
Some GPIOs support alternate functions like debugging, wake-up from EM4, external low frequency crystal access, etc.. The following
table shows which module pins have alternate capabilities and the functions they support. Refer to the SoC's reference manual for
more information.
Table 6.2. GPIO Alternate Functions Table
GPIO
Alternate Function
PB01
GPIO.EM4WU3
PA01
GPIO.SWCLK
PA02
GPIO.SWDIO
PA03
GPIO.SWV
GPIO.TDO
GPIO.TRACEDATA0
PA04
GPIO.TDI
GPIO.TRACECLK
PA05
GPIO.EM4WU0
PD02
GPIO.EM4WU9
PD01
LFXO.LFXTAL_I
LFXO.LF_EXTCLK
PD00
LFXO.LFXTAL_O
PC00
GPIO.EM4WU6
PC05
GPIO.EM4WU7
6.3 Analog Peripheral Connectivity
Many analog resources are routable and can be connected to numerous GPIO's. The table below indicates which peripherals are avali-
able on each GPIO port. When a differential connection is being used Positive inputs are restricted to the EVEN pins and Negative
inputs are restricted to the ODD pins. When a single ended connection is being used positive input is avaliable on all pins. See the
SoC's Reference Manual for more details on the ABUS and analog peripherals.
Table 6.3. ABUS Routing Table
Peripheral
Signal
PA
PB
PC
PD
EVEN
ODD
EVEN
ODD
EVEN
ODD
EVEN
ODD
ACMP0
ana_neg
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
ana_pos
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
ACMP1
ana_neg
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
ana_pos
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
IADC0
ana_neg
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
ana_pos
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
MGM210P Wireless Gecko Multi-Protocol Module Data Sheet
Pin Definitions
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