3.3 Pin Configuration

Table 3-7. ATZB-RF-233-1-C Pin Out Description
Pin Out	Pin descriptions	Function
1	AVSS	Analog ground
2	AVSS	Analog ground
3	DEVDD	Digital power input pin
4	DEVDD	Digital power input pin
5	/RST	REST active low
6	/SEL	SPI select, active low
7	MOSI	SPI data input
8	MISO	SPI data output
9	SCLK	SPI clock
10	DIG1	Reserved
11	FEM_CSD	Reserved
32	DIG3	RX-TX indication
33	DIG4	RX-TX indication (inverted)
34	DIG2	TX-RX timestamp
35	SLP_TR	Controls sleep, deep sleep, transmit start, receive states; active high
36	SCL	TWI- EEPROM
37	SDA	TWI- EEPROM
38	FEM_CPS	Front-end module select for RF_TX_RX
39	CLKM	Master clock output
40	IRQ	Interrupt request signal output
41	DVSS	Digital ground
42	DVSS	Digital ground

ATZB-RF-233-1-C