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ST25R3918 Datasheet(PDF) 19 Page - STMicroelectronics

Part # ST25R3918
Description  Multi-purpose NFC transceiver
PDF  141 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST25R3918 Datasheet(HTML) 19 Page - STMicroelectronics

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DS13490 Rev 2
19/141
ST25R3918
Pin and signal description
140
3
Pin and signal description
Figure 4. ST25R3918 QFN32 pinout (top view)
Table 1. ST25R3918 - VFQFPN32 pin assignment
VFQFPN32
Name
Type(1)
Description
1
VDD_IO
P
Positive supply for peripheral communication
2
NC
-
Do not connect
3
VDD_D
AO
Digital supply regulator output
4
XTO
AO
X’tal oscillator output
5
XTI
AI/DI
X’tal oscillator input, in test mode used as digital input (clock)
6
GND_D
P
Digital ground
7
VDD_A
AO
Analog supply regulator output
8
VDD
P
External positive supply
9
VDD_RF
AO
Regulated driver supply for antenna drivers
10
VDD_TX
P
External positive supply for the TX part
11
VDD_AM
AO
Regulated driver supply for AM modulation
12
GND_DR
P
Antenna driver ground, including driver VSS
13
RFO1
AO
Antenna driver output
14
VDD_DR
P
Antenna driver positive supply input
15
RFO2
AO
Antenna driver output
16
GND_DR
P
Antenna driver ground, including driver VSS
33
MS54049V1
25
26
1
30
39
28
27
2
32
1
2
3
4
5
6
7
8
VDD_IO
VDD_D
NC
XTO
XTI
GND_D
VDD_A
VDD
95
16
1
3
14
1
1
12
1
10
24
23
22
21
20
19
18
17
AGDC
RFI2
RFI1
VSS
I2C_EN
NC
NC
EXT_LM
VFQFPN32



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