Figure 21: Rs-232 And Irda - ST STM32L152-EVAL User Manual

Figure 21. RS-232 and IrDA
A
USART2/IrDA_RX
USART2/IrDA_CTS
Bootloader_RESET
USART2/IrDA_RTS
USART2/IrDA_TX
B
USART3_RX
C
USART3_TX
D
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1
C4
C8 VDD U2 +3V3 100nF
100nF 1 8
VCCA VCCB
PD6 R19 0 2 7
A1 B1
R20 0 3 6 USART2_CTS
A2 B2
4 5
GND DIR
SN74LVC2T45DCUT
JP9
PD3
C1
C9 VDD U4 +3V3 100nF
100nF 1 8
VCCA VCCB
PD4 2 7 USART2_RTS
A1 B1
PD5 3 6 USART2_TXD
A2 B2
4 5
GND DIR
R21 R12 SN74LVC2T45DCUT VDD
100K 100K
VDD
C2
C10 VDD U5 +3V3 100nF
100nF 1 8
VCCA VCCB
2 7
A1 B1
R11 0
PC11 3 6 USART3_RXD
A2 B2
4 5
GND DIR
SN74LVC2T45DCUT
C3
C12 VDD U3 +3V3 100nF
100nF 1 8
VCCA VCCB
2 7
A1 B1
PC10 3 6 USART3_TXD
A2 B2
4 5
GND DIR
R44
100K SN74LVC2T45DCUT VDD
VDD
1
2 3
100nF
C16 U8
28
C1+
24
C1-
C19 1
C2+
100nF 2
C2-
3 USART2_RXD
2 USART2_RTS 14
T1IN
1 IrDA_RXD USART2_TXD 13
T2IN
USART3_TXD 12
T3IN
JP5
21
R1OUTB
20
Bootloader_BOOT0 R2OUTB
19
R1OUT
18
R2OUT
USART2_RXD 17
R3OUT
USART2_CTS 16
R4OUT
USART3_RXD 15
R5OUT
23
nEN
ST3241EBPR
+3V3
C40
4.7uF
2 3
4
+3V3
C14 CN2
26 100nF DB9-male USART2
VCC
25
GND
27 C15 1
V+
3 100nF DSR 6
V-
C20 RXD 2
9 100nF RTS 7
T1OUT
10 TXD 3
T2OUT
11 CTS 8
T3OUT
4
9
5
4
R1IN
5
R2IN
6
R3IN
7
R4IN
8
R5IN
22 CN5
nSHDN
DB9-male USART3
+3V3 [N/A]
R46
1
6
RXD 2
7
TXD 3
8
4
9
5
U17
5
SD
USART2_TXD 3
TxD
IrDA_RXD 4
RxD
R55
1
Anode (VCC2)
2
5
Cathode
R60
47 6
VCC1
7
NC
8
GND
TFDU6300
IrDA
C48
C44 C47
4.7uF
100nF 100nF
Title:
STM32L152-EVAL RS232&IrDA
Number: MB819 Rev: B.3(PCB.SCH) Date: 10/13/2010
4
A
B
C
D
Sheet 9 of 14