Table 4.
SPI interface pinout at J10, J12 and J13
Component: U5
Component: U6
Component: U7
Component: U8
J10 J12 J13
ST25RU3993 pin
name
ST25RU3993 pin
number
DTC1 pin
name
DTC1 pin
number
DTC2 pin
name
DTC2 pin
number
DTC3 pin
name
DTC3 pin
number
SCLK
37
CLK
5
CLK
5
CLK
5
1
-
-
MISO
34
-
-
-
-
-
-
3
-
-
MOSI
35
SDAT
7
SDAT
7
SDAT
7
2
-
-
-
-
-
-
-
-
ETC3
SEN
6
-
-
3
-
-
-
-
ETC2
SEN
6
-
-
-
-
2
-
-
ETC2
SEN
6
-
-
-
-
-
-
1
OAD2
-
-
-
-
-
-
1
-
OAD
-
-
-
-
-
-
-
-
2
-
EN
31
-
-
-
-
-
-
-
3
-
IRQ
32
-
-
-
-
-
-
-
4
-
NCS
33
-
-
-
-
-
-
-
5
-
ADC
-
-
-
-
-
-
-
-
6
-
Table 5.
UART connections and pinout
Component: U1
Component: U13
J7
MCU pin name
MCUpin number
FTDI pin name
FTDI pin number
Connector pin number
NRST
7
RTS
19
1
BOOT0
60
DTR
18
2
PA3
17
TXD
17
3
PA2
16
RXD
1
4
Table 6.
MCU - connections to buttons
Component: U1
Component: B1
Component: B2
MCU pin name MCU pin number Reset button pin name
Reset button pin
number
Boot button pin name Boot button pin number
NRST
7
1
1
-
-
NRST
7
4
4
-
-
BOOT0
60
-
-
2
2
BOOT0
60
-
-
5
5
UM2353
Microcontroller and connections
UM2353
-
Rev 2
page 12/48
Summary of Contents for ST25RU3993-EVAL
Page 25: ...Figure 16 Schematic of UHF RFID reader device UM2353 Rev 2 page 25 48 UM2353...
Page 26: ...Figure 17 Schematic of external power amplifier UM2353 Rev 2 page 26 48 UM2353...
Page 28: ...Figure 20 Schematic of USB supply UART bridge UM2353 Rev 2 page 28 48 UM2353...
Page 29: ...Figure 21 Schematic of microcontroller UM2353 Rev 2 page 29 48 UM2353...
Page 30: ...Figure 22 Schematic of supply LDOs UM2353 Rev 2 page 30 48 UM2353...
Page 31: ...Figure 23 Schematic of external interfaces and connections UM2353 Rev 2 page 31 48 UM2353...
Page 32: ...Figure 24 Schematic of BT classic module UM2353 Rev 2 page 32 48 UM2353...
Page 33: ...Figure 25 Schematic of RF shield UM2353 Rev 2 page 33 48 UM2353...
Page 39: ...8 4 GND layer Figure 30 Layout GND layer UM2353 GND layer UM2353 Rev 2 page 39 48...