AMS TMF8821-SHIELD Manual de usuario

Quick Start Guide

QG001019

TMF8821-SHIELD

Quick Start Guide

v1-00 •2022-Feb-02

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Content Guide

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Content Guide

1Out of the Box................................ 3

2Software Installation ..................... 4

3Hardware Overview....................... 5

4Schematic ...................................... 7

5Bill of Materials.............................. 8

6Layout ............................................ 9

7Cover Glass Drawing...................11

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Out of the Box

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1 Out of the Box

The TMF8821-SHIELD board is an Arduino UNO form factor development platform for quick

evaluation of the TMF8821 multi-zone dToF sensor.

Featuring a small (20 mm x 12 mm) sensor breakaway board, this kit can be easily integrated into

custom, prototype hardware.

Several cover glass and air gap spacers are provided, this helps to evaluate the system for optimal

optical performance.

Figure 1:

TMF8821-SHIELD With and Without Air Gap Spacer & Cover Glass

No.

Item

Description

TMF8821-SHIELD

Main PCB with TMF8821 sensor breakaway board

x4 Cover Glass

0.5 mm / 0.6 mm / 0.7 mm / 0.8 mm - thickness

x4 Air gap spacers

0.17 mm / 0.25 mm / 0.38 mm / 0.5 mm - thickness

2 screws

Screws for securing cover glass to PCB

Screwdriver

Screwdriver for securing screws

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Software Installation

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2 Software Installation

The TMF8821-SHIELD is designed to operate with a variety of MCU hardware platforms.

A Software Development Kit (SDK) for the TMF8821 has been developed to run on the NXP

LPC55S69-EVK.

SDK source code examples include:

●Sensor calibration

●Simple configuration (9 zone distance reporting)

●Histogram output (9 zone configuration and 128bin reporting)

●Custom SPAD maps (reconfigure device to 4x4 mode)

LPC55S69 SDK download LINK

Please download the latest revision of the SDK, TMF8821_Driver_SDK_Source_vx.xx.zip from

ams.com and refer to TMF8821_Software_Development_Kit_Getting_Started_Guide.pdf for

installation and operations details.

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Hardware Overview

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3 Hardware Overview

The TMF8821-SHIELD board is an Arduino UNO form factor development platform for quick

evaluation of the TMF8821 multi-zone dToF sensor.

Featuring a small sensor breakaway board, this EVM can be integrated into custom, prototype

hardware. The EVM includes an I2C level shifter and supply voltage regulator to allow the EVM to be

used with input voltages up to 5 V.

4 cover glass and air gap spacers are provided, to enabling evaluation of the optical performance.

Key features

●Arduino UNO form factor development board

●TMF8821 sensor mounted on breakaway board

●Cover glass samples included, 0.5 mm / 0.6 mm / 0.7 mm / 0.8 mm - thicknesses

●Air gap spacer samples included, 0.17 mm / 0.25 mm / 0.38 mm / 0.5 mm - thicknesses

●Breakaway board Vdd current sense test point

●Reset button

●Onboard LDO and I2C level shifter

Figure 2:

TMF8821-SHIELD Hardware Overview

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Hardware Overview

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Attention

Please check latest TMF8821 datasheet for maximum supply and IO voltages. Failure to adhere to

these voltage levels may result in permanent damage to the TMF8821-SHIELD.

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Schematic

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4 Schematic

Figure 3:

TMF8821-SHIELD Schematic

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Bill of Materials

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5 Bill of Materials

Figure 4:

Bill of Materials

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Layout

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6 Layout

Figure 5:

Layer 1(1)

(1) Full layout details can be found in TMF882x_AD001003_1-00.pdf.

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Layout

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Figure 6:

Layer 4(1)

(1) Full layout details can be found in TMF882x_AD001003_1-00.pdf.

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