MXT1664T3-ABESSQTP datasheet(33/98 Pages) MICROCHIP

33 / 98 page

MXT1664T3 2.0

 2018 Microchip Technology Inc.

DS40002054A-page 33

7.3

I2C Address Selection – ADDSEL Pin

TABLE 7-3:

COMMUNICATIONS MODE SELECTION

I2CMODE

ADDSEL

Mode

(HID-I2C selected)

(Address = 0x4A)

HID-I2C communications at 0x4A

(Address = 0x4B)

HID-I2C communications at 0x4B

(I2C selected)

(Address = 0x4A)

I2C communications at 0x4A

(Address = 0x4B)

I2C communications at 0x4B

No input or input floating

(auto selection)

(Primary address = 0x4A,

secondary address = 0x4B)

I2C communications at 0x4A (primary address)

HID-I2C communications at 0x4B (secondary address)

(Primary address = 0x4B,

secondary address = 0x4A)

I2C communications at 0x4B (primary address)

HID-I2C communications at 0x4A (secondary address)

If the I2CMODE pin is not floating (that is, a particular mode is chosen), the I2C address is selected by connecting the

ADDSEL pin according to Table 7-4.

TABLE 7-4:

I2C ADDRESS SELECTION

ADDSEL

I2C Address

Connected to GND

0x4A

Pulled up to VddIO (1)

0x4B

Note

Requires a pull-up resistor; see Section 2.0 “Schematics”

MXT1664T3-ABESSQTP Datasheet(PDF) 33 Page - Microchip Technology

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