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ST25R3916B Datasheet(PDF) 21 Page - STMicroelectronics

Part # ST25R3916B
Description  NFC reader for payment, consumer and industrial applications
PDF  165 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST25R3916B Datasheet(HTML) 21 Page - STMicroelectronics

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DS13541 Rev 7
21/165
ST25R3916B ST25R3917B
Pin and signal description
164
13
F3
RFO1
AO
Antenna driver output
14
E3
VDD_DR
P
Antenna driver positive supply input
15
F2
RFO2
AO
Antenna driver output
16
F1
GND_DR2
P
Antenna driver ground, including driver VSS
17
E2
EXT_LM
AO
External load modulation MOS gate driver
18
E1
AAT_A
AO
AAT tune voltage for variable capacitor AAT_A
19
D1
AAT_B
AO
AAT tune voltage for variable capacitor AAT_B
20
D2
I2C_EN
DI
I2C interface enable
21
C1, C2, C3
VSS
P
Ground, die substrate potential
22
B1
RFI1
AI
Receiver input
23
B2
RFI2
AI
Receiver input
24
A2
AGDC
AIO
Analog reference voltage
25
A1
TAD2
AIO
Test output 1
26
A3, B3, B4
GND_A
P
Analog ground
27
A4
IRQ
DO
Interrupt request output
28
C4
MCU_CLK
DO
Clock output for MCU
29
A5
BSS
DI
SPI enable (active low)
30
D3
SCLK
DI
SPI clock / I2C clock
31
D4
MOSI
DI
SPI data input
32
B5
MISO
DO_T
Serial peripheral interface data output / I2C data line
33
NA
NA
P
Thermal pad (GND)
1. P: Power supply pin
AIO: analog I/O, AI: analog input, AO: analog output
DI: digital input, DIPD: digital input with pull-down, DO: digital output, DO_T: digital output/tri-state, DIO: digital bidirectional.
Table 2. ST25R3916B - VFQFPN32 and WLCSP36 pin assignment (continued)
VFQFPN32
WLCSP
Name
Type(1)
Description
Table 3. ST25R3917B VFQFPN32 pin assignment
VFQFPN32
Name
Type(1)
Description
1
VDD_IO
P
Positive supply for peripheral communication
2
TAD2
AO/DO
Test analog digital
3
VDD_D
AO
Digital supply regulator output
4
XTO
AO
Crystal oscillator output
5
XTI
AI/DI
Crystal 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



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