산업용 LTE 모뎀 RCU-890S로 M2M, TCP, SMS 솔루션 제공

Pin No.	Pin name	Description
1	3_3V	3.3V
2	GND	Ground
3	PD6	GPIO port D pin 6 (If not use 32-kHz crystal oscillator)
4	PD7	GPIO port D pin 7 (If not use 32-kHz crystal oscillator)
5	JTAG_TMS	JTAG TMS
6	JTAG_TCK	JTAG TCK
7	PB7/JTAG_TDO	GPIO port B pin 7, TDO (JTAG)
8	PB6/JTAG_TDI	GPIO port B pin 6, TDI (JTAG)
9	PB5	GPIO port B pin 5
10	PB4	GPIO port B pin 4
11	PB3	GPIO port B pin 3
12	PB2	GPIO port B pin 2
13	PB1	GPIO port B pin 1
14	GND	Ground
15	GND	Ground
16	USB_P	USB differential data plus (D+)
17	USB_N	USB differential data minus (D−)
18	PB0	GPIO port B pin 0
19	PC7	GPIO port C pin 7
20	PC6	GPIO port C pin 6
21	PC5	GPIO port C pin 5
22	PC4	GPIO port C pin 4
23	PC1	GPIO port C pin 1, 20 mA output capability, no pull-up or pull-down
24	PC0	GPIO port C pin 0, 20 mA output capability, no pull-up or pull-down
25	PA0	GPIO port A pin 0. ROM bootloader UART RXD
26	GND	Ground
27	PA1	GPIO port A pin 1. ROM bootloader UART TXD
28	PA2	GPIO port A pin 2. ROM bootloader SSI CLK
29	PA3	GPIO port A pin 3. ROM bootloader SSI SEL
30	PA4	GPIO port A pin 4. ROM bootloader SSI RXD
31	PA5	GPIO port A pin 5. ROM bootloader SSI TXD
32	PA6	GPIO port A pin 6
33	PA7	GPIO port A pin 7
34	PD0	GPIO port D pin 0
35	PD1	GPIO port D pin 1
36	NRESET	Reset, active-low
37	PD3	GPIO port D pin 3
38	PD4	GPIO port D pin 4
39	PD5	GPIO port D pin 5
40	3_3V	3.3V