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PD39210 датащи(PDF) 6 Page - Microchip Technology

номер детали PD39210
подробное описание детали  PoE PSE Controller
PDF  22 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PD39210 датащи(HTML) 6 Page - Microchip Technology

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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 PD39210. 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 table.
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
34
0x18
26.7
0x1C
22.1
0x20
18.2
0x24
15.4
0x28
13
0x2C
11
0x30
9.31
0x34
7.87
0x38
6.49
0x3C
5.49
PD39210
Architecture
© 2020 Microchip Technology Inc.
Datasheet
DS00003554C-page 6



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