PD69210 datasheet(6/21 Pages) MICROCHIP

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1.8

UART or I2C Address Selection

The choice of UART or I2C interface between the host CPU is made by applying a specific voltage level to pin #13

(I2C_ADDR_MEAS) on the PD69210, or by applying a specific voltage level to pin #22 (I2C_ADDR_MEAS) on the

PD69220. Additionally, the specific I2C address is also set by this voltage level. In all cases, the voltage is set via an

external resistor divider as shown in the following figure.

Figure 1-3. I2C Address Selection

The specific Value of R to choose UART or I2C and to set the address is given in the following tables for PD69210

and PD69220.

Table 1-2. I2C Address Selection

I2C Address (Hexadecimal)

R1- KΩ (1%)

UART

N.C.

0x4

147

0x8

86.6

0xC

57.6

0x10

43.2

0x14

0x18

26.7

0x1C

22.1

0x20

18.2

0x24

15.4

0x28

0x2C

0x30

9.31

0x34

7.87

0x38

6.49

0x3C

5.49

PD69210/PD69220

Architecture

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