RAK8213 Pi HAT Datasheet

Overview

Description

RAK8213 Pi HAT is designed to work in conjunction with the RAK8213 NB-IoT module. It works as a converter for the RAK8213 mPCIe module to the 40-pin header connector on the Raspberry Pi. Thus, the RAK8213 HAT allows one to easily add NB-IoT functionality to any Raspberry Pi.

Features

• Pi HAT form factor
• mPCIe slot
• Micro-USB connector serving as both interface and power for the RAK8213

Specifications

Overview

RAK8213 Pi HAT maps the RAK8213 pins from the 52-pin mPCIe connector to the 40-pin Raspberry Pi connector. Refer to the block diagram in Figure 1 shown below and the pin mapping table shown in the Pin Definition section.

Figure 1: RAK8213 Pi HAT Block Diagram

Hardware

Pin Definition

The following tables show the pin definition and description of RAK8213 Pi HAT on the 40-pin Pi HAT connector.

Type	Description
IO	Bidirectional
DI	Digital Input
DO	Digital output
OC	Open collector
OD	Open drain
PI	Power input
PO	Power output
NC	No Connection

Pin No.	Raspberry Pi 40-Pin Connector	RAK8213 Pi HAT Pin	I/O	Remarks
1	3V3	NC		No Connection
2	5 V	5 V	PI	5 V Input
3	GPIO2 (SDA1)	NC		No Connection
4	5 V	5 V	PI	5 V Input
5	GPIO3 (SCL1)	NC		No Connection
6	GND	GND		Ground
7	GPIO4 (GPIO_GCLK)	NC		No Connection
8	GPIO14 (TXD0)	UART_RXD_ LTE	DI	Connect RAK8213 built in LTE Module’s UART_RXD
9	GND	GND		Ground
10	GPIO15 (RXD0)	UART_TXD_ LTE	DO	Connect RAK8213 built in LTE Module’s UART_TXD
11	GPIO17 (GPIO_GEN0)	NC		No Connection
12	GPIO18 (GPIO_GEN1)	PWRKEY_LTE	DI	Turn on/off the module. When RAK8213 is in power off mode, it can be turned on to normal mode by driving the PI_PWRKEY pin to a high level for at least 500 ms. When RAK8213 is in normal mode, driving the PWRKEY_LTE pin to a high-level voltage for at least 650 ms, the module will execute power-down procedure after the PWRKEY_LTE is released.
13	GPIO27 (GPIO_GEN2)	UART_DCD_LTE	DO	Data carrier detection
14	GND	GND		Ground
15	GPIO22 (GPIO_GEN3)	UART_DTR_LTE	DI	Data terminal ready (sleep mode control)
16	GPIO23 (GPIO_GEN4)	VBUS_CTRL_LTE	DI	USB detection control, High level: Enable USB detection Low level: Disable USB detection
17	3V3	NC		No Connection
18	GPIO24 (GPIO_GEN5)	GNSS_PWR_CTRL_LTE	DI	Active GNSS antenna power supply control, High level: Enable power supply (3.3 V) Low level: Disable power supply
19	GPIO10 (SPI_MOSI)	NC		No Connection
20	GND	GND		Ground
21	GPIO9 (SPI_MISO)	NC		No Connection
22	GPIO25 (GPIO_GEN6)	UART_CTS_LTE	DO	Clear to send
23	GPIO11 (SPI_CLK)	NC		No Connection
24	GPIO8 (SPI_CE0_N)	NC		No Connection
25	GND	GND		Ground
26	GPIO7 (SPI_CE1_N)	NC		No Connection
27	ID_SD	NC		No Connection
28	ID_SC	NC		No Connection
29	GPIO5	W_DISABLE_LTE	DI	Airplane mode control, Pull-up by default. At low voltage level, the RAK8213 built in LTE Module can enter into airplane mode
30	GND	GND		Ground
31	GPIO6	RESET_LTE	DI	Connect to RAK8213 built in LTE Module’s RESET PIN, LTE Module reset input, Active Low
32	GPIO12	UART_RST_LTE	DI	Request to send
33	GPIO13	NC		No Connection
34	GND	GND		Ground
35	GPIO19	NC		No Connection
36	GPIO16	PSM_LTE	DO	Power saving mode indicator
37	GPIO26	AP_READY_LTE	DI	Application processor sleep state detection
38	GPIO20	UART_RI_LTE	DO	Ring indicator
39	GND	GND		Ground
40	GPIO21	STATUS_LTE	DO	Indicate the module’s operation status. It will output a low level when the module is powered on.

NOTE

There is a micro-USB connector on the RAK8213 Pi HAT, which connects to RAK8213\u2019s USB interface. This gives you direct access to the USB interface (BG96) and is also required to power the RAK8213 when inserted in the slot, as it requires additional power.

Ordering Information

Model	Description	Supported Module
RAK8213 Pi HAT	PCIe to Pi HAT Convert Board for RAK8213	RAK8213