MicroMod WiFi Function Board - DA16200 Hookup Guide

Contributors: Ell C

Hardware Overview

DA16200

The MicroMod WiFi Function Board includes the DA16200 module from Dialog with AT command firmware. This chip is a fully integrated Wi-Fi® module with ultra-low power consumption, 40 MHz crystal oscillator, 32.768 KHz RTC clock, RF Lumped RF filter, 4 M-byte flash memory, and an onboard chip antenna. For more information, refer to the datasheet.

Power

To power the board, you will need to apply power to a SparkFun Main Board; either a Single or a Double. Power applied will connect to the Function Board's VIN pin, which will be regulated down for the rest of the board with the AP2112 3.3V/600mA voltage regulator.

USB C of the Main board with USBC cable plugged in is highlighted

AP2112

Operating voltage for the DA16200 is 3.3 V. The AP2112 can handle a voltage range of 2.5-6V with a 600mA output and ensures appropriate voltage to the WiFi unit.

CH340

The board is populated with the CH340E USB-to-Serial converter to update firmware on the DA16200 through its USB Type C connector. You will need a Main Board and a second USB cable to update the firmware.

Reset Button

The reset button allows users to reset the program running on the Dialog module without unplugging the board.

WPS Button

The Wi-Fi Protected Setup Button allows you to easily and quickly connect to a WiFi network.

EEPROM

The board includes an I²C EEPROM. To enable writing to the EEPROM, pull WP low, either through the EEPROM_WP pin or by closing JP3.

JTAG

An unpopulated JTAG footprint is available for more advanced users who need breakpoint level debugging. We recommend checking out our JTAG section for the compatible male header and a compatible JTAG programmer and debugger.

LED

There is only one LED available which is the Power LED. The LED lights up to indicate availability for the DA16200 from the 3.3V voltage regulator. You can disable it by cutting the jumper on the back of the board (see Jumpers below).

Power LED is just below the WiFi module on the right side of the board

Jumpers

Note: If this is your first time working with jumpers, check out the How to Work with Jumper Pads and PCB Traces tutorial for more information.

The following jumpers are included to configure the board.

PWR - By default, the jumper with the label PWR is closed. This jumper connects the 3.3V line and LED. Cutting this jumper will disable the LED.

Power LED Jumper is on the back of the board on the opposite side from the M2 connector

I²C Pull-up Resistors - By default, this three way jumper labeled I²C is closed and connects two pull-up resistors to the I²C data lines. If you have many devices on your I²C data lines, then you may consider cutting these two jumpers.

I2C jumper is on the front of the board to the left of the WPS button

WP - By default, write protect for the EEPROM is on. To disable write protection, close this jumper.

Write protect jumper is on the back of the board just next to the M2 Connector

Hardware Pinout

The M.2 connector on the MicroMod WiFi Function Board - DA16200 is routed according to the pinout chart below:

Highlighted function board M.2 connector

Depending on your window size, you may need to use the horizontal scroll bar at the bottom of the table to view the additional pin functions. Note that the M.2 connector pins on opposing sides are offset from each other as indicated by the bottom pins where it says (Not Connected)*. There is no connection to pins that have a "-" under the primary function.

MicroMod WiFi Function Board - DA16200 Pinout Table

AUDIO

UART

GPIO/BUS

I²C

SDIO

SPI0

Dedicated

Description	Function	Bottom Pin	Top Pin	Function	Description
	(Not Connected)		75	GND
	-	74	73	3.3V	Power Supply: 3.3-6V
	-	72	71	Power EN	Power Supply: 3.3-6V
	-	70	69	-
	-	66	65	-
	-	64	63	-
	-	62	61	-
	-	60	59	-
	-	58	57	RTC_WAKE1	This pin is an input pin for receiving an external event signal from an external device like a sensor. The RTC block detects an external event signal via this pin and wakes up DA16200 from Sleep mode 2 or Sleep mode 3.
	-	56	55	RTC_WAKE2	This pin is an input pin for receiving an external event signal from an external device like a sensor. The RTC block detects an external event signal via this pin and wakes up DA16200 from Sleep mode 2 or Sleep mode 3.
	-	54	53	RTC_PWR_KEY	Enable to kick off a predefined power-up sequence and eventually all the necessary power is supplied to all the sub-blocks including the main digital block in DA16200. When disabled, all blocks are powered off and this mode is defined as Sleep mode 1.
	-	52	51	GPIOA11
	-	50	49	CS
	-	48	47	GPIOA10
	-	46	45	GND
	-	44	43	-
	-	42	41	-
Controls the write protection pin for the EEPROM. Pull low to enable.	EEPROM_WP	40	39	GND
	-	38	37	-
Controls EEPROM's I²C address configuration.	EEPROM_A0	36	35	-
Controls EEPROM's I²C address configuration.	EEPROM_A1	34	33	GND
Controls EEPROM's I²C address configuration.	EEPROM_A2	32	31	Module Key
	Module Key	30	29	Module Key
	Module Key	28	27	Module Key
	Module Key	26	25	Module Key
	Module Key	24	23	-
	-	22	21	I2C_SCL	I²C - Clock signal for EEPROM
	-	20	19	I2C_SDA	I²C - Data signal for EEPROM
	-	18	17	-
	-	16	15	U1_RXI
	-	14	13	U1_TXO
	-	12	11	-
	-	10	9	-
	-	8	7	CIPO
	-	6	5	COPI
	-	4	3	SCK
	-	2	1	GND

Board Dimensions

The board uses the standard MicroMod Function Board size which measures about 1.50"x2.56".

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