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TMF8801

Application Information

Datasheet

• PUBLIC

DS000648

• v10-00 • 2022-Dec-20

│ 62

9.3.1

Operating Several TMF8801 on a Single I²C Bus

Several TMF8801 devices can share a single I²C bus if there are dedicated enable (EN) connections

to each of these devices.

Figure 121:

Sharing a Single I²C Bus for Operating Several TMF8801s

The procedure to initialize the devices to different I²C addresses is as follows:

Set EN1=0, EN2=0, EN3=0 (reset all devices)

Set EN1=1

Upload firmware patch to first TMF8801

Reprogram I²C address for first TMF8801 using command=0x49 where cmd_data0=0 and

cmd_data1=I²C address for first TMF8801

Set EN2=1

EN1

SDA

SCL

Host

Cortex M0

GPIO1

GPIO0

TMF8801

VCSEL

Optical

Filter

Reflective

Surface

Background

Light

Internal

Reflection

Optics

SPAD,

TDC and

Histogram

Driver

Control

Data

Process

TOF Sensor

Cortex M0

GPIO1

GPIO0

TMF8801

VCSEL

Optical

Filter

Reflective

Surface

Background

Light

Internal

Reflection

Optics

SPAD,

TDC and

Histogram

Driver

Control

Data

Process

TOF Sensor

Cortex M0

GPIO1

GPIO0

TMF8801

VCSEL

Optical

Filter

Reflective

Surface

Background

Light

Internal

Reflection

Optics

SPAD,

TDC and

Histogram

Driver

Control

Data

Process

TOF Sensor

EN2

INT2

SDA

SCL

EN3

INT3

SDA

SCL

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