AHM28108E

Description

AHM28108E is the Wi-Fi HaLow™ industrial M.2 module

The AHM28108E allows building long-range, ultra-low power Wi-Fi networks in sub
1 GHz license-exempt bands, utilizing compact M.2 2230 form factor.
The AHM28108E data rate up to 43.3 Mbps at 8 MHz bandwidth with the high-speed data rate, it enables connectivity for many IoT applications, including sensors, weather stations, industrial monitoring, medical patient monitoring, agricultu

Key Features

Morse Micro MM8108 HaLow chipset
IPEX4 (MHF4) antenna connector
IPEX (MHF1) antenna connector
Power LED
WiFi HaLow LED
M.2/NGFF 2230/2242 E-Key

Specifications

Chipset	Morse Micro MM8108
Frequency	915 MHz (US) 868 MHz (EU) 850/924 MHz (JP) 920 MHz (TW)
Modulation	OFDM with BPSK, QPSK, 16QAM, 64QAM, 256QAM
Max. Data rate	Up to 43.3 Mbps @ 8 MHz bandwidth (Max. Phy rate)
Channel bandwidth	1/2/4/8 MHz (US) 1 MHz (EU) 1/2/4 MHz (JP) 1/2/4/MHz (TW)
Antenna connector	1x IPEX4 (MHF4) antenna connector (Default) 1x IPEX (MHF1) antenna connector (Optional)
Host interface	SDIO / SPI / USB
LED	Power LED WiFi HaLow LED
Form factor	M.2/NGFF 2230/2242 E-Key
Dimensions	22 x 30 mm / 22 x 42 mm
Operating temperature	-40°C to 85°C (-40°F to 185°F)
Software & SDK	https://github.com/MorseMicro
Board configuration file (BCF)	Linux based: bcf_aw_hm677.bin mm8108b2-rl.bin STM32 based: bcf_boardtype_0a02.mbin

Supports worldwide bands from 850MHz to 950MHz

AHM28108E (US)

AHM28108E (EU)

AHM28108E (JP)

AHM28108E (TW)

902 MHz – 928 MHz

863 MHz – 868 MHz

920.5 – 927.5 MHz

920.5 – 924.5 MHz

26 MHz

5 MHz

7 MHz

4 MHz

RF Specifications & Operating Conditions

Tx transmit power / Rx receive sensitivity
Data Rate	Modulation	BW=1M			BW=2M			BW=4M			BW=8M
Data Rate	Modulation	Tx (dBm) +/-2	Rx (dBm)	PHY rate (Mbps)	Tx (dBm) +/-2	Rx (dBm)	PHY rate (Mbps)	Tx (dBm) +/-2	Rx (dBm)	PHY rate (Mbps)	Tx (dBm) +/-2	Rx (dBm)	PHY rate (Mbps)
MCS0	BPSK	25	-104	0.3	24.5	-102	0.7	22.5	-99	1.5	21.5	-95	3.3
MCS1	QPSK	25	-102	0.7	24.5	-100	1.4	22	-95	3.0	20.5	-92	6.5
MCS2	QPSK	25	-100	1.0	24.5	-97	2.2	22	-93	4.5	20.5	-90	9.8
MCS3	16-QAM	24.5	-97	1.3	24.5	-94	2.9	22	-90	6.0	20.5	-87	13
MCS4	16-QAM	23.5	-94	2.0	24	-91	4.3	22	-86	9.0	20.5	-84	20
MCS5	64-QAM	21	-90	2.7	22.5	-87	5.8	21	-82	12	20	-80	26
MCS6	64-QAM	21	-88	3.0	21	-85	6.5	20	-81	14	19	-78	29
MCS7	64-QAM	18.5	-87	3.3	19.5	-83	7.2	19	-79	15	18.5	-77	33
MCS8	256-QAM	17	-83	4.0	17.75	-79	8.9	18.5	-75	18	17.5	-73	39
MCS9	256-QAM	15.75	-80	4.4	--	--	--	16.75	-74	20	16	-71	43

Note: The following transmit power levels are for IEEE compliance for 802.11ah.
They do not consider any backoffs needed for regional spectrum compliance (e.g., FCC, CE, TELEC, NCC).
TX power in edge channels will be limited by the restricted band edge in the regulatory regions.

◎ Operating Conditions

Symbol	Minimum	Typical	Maximum	Unit
3.3V (VDD33)	3.0	3.3	3.6	V
TAMBIENT (Ambient temperature)	-40		85	°C
Tstg (Storage temperature)	-40		125	°C

Power Consumption

◎ Transmit Power Consumption

No.	Item			3.3V
Band (MHz)	Mode	BW (MHz)	RF Power (dBm)	Transmit (mA)
Band (MHz)	Mode	BW (MHz)	RF Power (dBm)	Max.	Avg.
11ah US_915	MCS0	1	25	134.61	115.91
		2	24.5	135.06	111.93
		4	22.5	133.97	107.48
		8	21.5	140.48	110.28
	MCS9	1	15.75	109.47	89.18
	MCS8	2	17.75	114.48	89.71
	MCS9	4	16.75	119.58	92.2
	MCS9	8	16	129.01	99.19
11ah EU_865.5	MCS0	1	14.75	106.6	92.08
11ah EU_865.5	MCS9	1	14.75	108.39	89.44

◎ Receive Power Consumption

No.	Item		3.3V
Band (MHz)	Mode	BW (MHz)	Receive (mA)
Band (MHz)	Mode	BW (MHz)	Max.	Avg.
11ah US_915	MCS0	1	81.05	76.9
		2	82.74	78.39
		4	87.48	82.43
		8	97.09	90.41
	MCS9	1	83.29	76.68
	MCS8	2	85.64	78.53
	MCS9	4	91.04	82.93
	MCS9	8	100.89	91.27
11ah EU_865.5	MCS0	1	84.27	78.28
11ah EU_865.5	MCS9	1	84.62	78.4

M.2 Pinout Assignment

Top			Bottom
75		GND	3.3V (VDD33)		74
73		NC	3.3V (VDD33)		72
71		NC	NC		70
69		GND	NC		68
67		NC	NC		66
65		NC	NC		64
63		GND	NC		62
61		NC	NC		60
59		NC	NC		58
57		GND	** W_DISABLE1# (WiFi Disable)(active low)	I	56
55		NC	NC		54
53		NC	NC		52
51		GND	NC		50
49		NC	NC		48
47		NC	NC		46
45		GND	NC		44
43		NC	MM_DBG_TX (Reserved)		42
41		NC	MM_DBG_RX (Reserved)		40
39		GND	** MM_BUSY (WiFi Busy)(active high)	O	38
37		NC	NC		36
35		NC	NC		34
33		GND	UART_RX		32
Mechanical Key
23	I	MM_RESET# (active low)	UART_TX		22
21	I	MM_WAKE (active high)	NC		20
19	I/O	SDIO_DATA3 / SPI_CS	GND		18
17	I/O	SDIO_DATA2	NC		16
15	I/O	SDIO_DATA1 / SPI_INT	NC		14
13	I/O	SDIO_DATA0 / SPI_MISO	NC		12
11	I/O	SDIO_CMD / SPI_MOSI	NC		10
9	I	SDIO_CLK / SPI_SCK	NC		8
7		GND	External WiFi HaLow LED# (MM8108 GPIO 5)(active low)	O	6
5	I/O	USB_D-	3.3V (VDD33)		4
3	I/O	USB_D+	3.3V (VDD33)		2
1		GND