A121-001-R datasheet(8/29 Pages) ACCOONEER

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A121 Pulsed Coherent Radar (PCR)

Datasheet v1.0

2023-03-30

Page 8 of 29

Pin name

Pin type

Description

Comment

E10

PLL_RF_TEST

Analog

Must be connected to solid

ground plane

GPIO1

I/O

For future use. Connect to

ground

F10

ENABLE

I/O

To control

OFF/ON/Hibernate/Reset

Recommended to be

connected to host MCU GPIO.

ENABLE is active high

GPIO2

I/O

For future use. Connect to

ground

H10

XOUT

CLK

XTAL output

RESET_N

I/O

RESET_N must be connected

to VIO

SPI_SS

I/O

SPI slave select, active low

select.

VDIG

Supply voltage

Supply voltage, digital part

J10

XIN

CLK

XTAL input

SPI_CLK

I/O

SPI Serial Clock

SPI_MISO

I/O

Master Input

– Slave Output

GPIO4

I/O

For future use. Connect to

ground

SPI_MOSI

I/O

Master Output

– Slave Input

INTERRUPT

I/O

Interrupt signal, used as an

interrupt to the host. More

details are found in section 7,

Description.

Mandatory

VIO

Supply voltage

Supply voltage, digital part

Table 1. A121 sensor pin list.

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