Figure 6. STEVAL-DPS334C1 control board - opto-isolated communication schematic

5

TO PLACE ON THE RIGHT AND ON THE LEFT SIDE OF THE BOARD RESPECTIVELY

U2

MCU_USART_RX

USART_RX_iso

15pF

R3

USART_TX_iso

6

GND

R10820

J1

J2

SHIELD

0 N.M

R447

GND_iso

100nF

0

R5

C3

GND

0 N.M.

R6

+3.3V_iso

R12

1

6

+3.3V_iso

SHIELD

7

GND_iso

0 N.M.

R1147

GND

USART_RX_iso

OPTOCOUPLERS

CONNECTION BETWEEN TWO CONTROL BOARDS

820R2

GND

0 N.M

C2

15pF

MCU_USART_RX

7

USART_CON

8

R13

1

2

3

4

MCU_USART_TX

C4

3

2

USART_RX_iso

1

C1

4

+3.3V_iso

8

100nF

R1

0

R939

R14

5

GND_iso

0

R7

USART_RX_iso

PS9821

GND

39

MCU_USART_RX

GND_iso

GND_iso

0

+3.3V

GND

+3.3V

4

+3.3V_iso

MCU_USART_TX

MCU_USART_TX

GND_iso

USART_TX_iso

USART_TX_iso

1

2

3

4

USART_CON

PS9821

+3.3V

USART_TX_iso

2

3

U1

R8

Figure 7. STEVAL-DPSADP01 adapter board schematic

2

4

6

8

1

JTDI_JTAG_ADP

JTMS_ADP

R3

100nF 25V

P1

T1OUT

14

19

17

T1IN

GND

JP_JTDI

100nF

J3

I2C_SMBA

GND

J1

I2C_SMBA

2

C&K KMR221GLFS

Farnell: 1201424

JTDO_ADP

DB9-Female

SG

Jtag conn.

3

GND

11

+3.3V

CAN_RX

C2-

5

3

1

JTMS_ADP

100nF 25V

1

RESET#_BTN

1

R2OUT

C7

JTAG

RESET BUTTON

4

I2C_SCL/USART_RX/CAN_RX

I2C_SDA/USART_TX/CAN_TX

3

GND

C2+

4

2x stripline male 3+1 2.54mm

pin 4 can be connected with pin 1, 2 or 3 with a jumper

1

6

2

7

3

8

4

9

5

+3.3V

GND

4

R5

0

V+

2

R

4

USART_RX

R2

2

USART_TX

120

6

CANL

GND

3

C1-

GND

+3.3V

9

10k

GND

DB9-Male

5

NC1

+3.3V

J9

4.7k

CAN_RX

1

3

5

7

9

CAN_TX

I2C_SDA/USART_TX/CAN_TX

R4

100nF 25V

U1

J7

+3.3V

20

RESET#_ADP

T2IN

10

7

CANH

R1

SMBUS_SDA

S1

RST

C & K

KMR221GLFS

100nF 25V

C3

J2

10

2

3

+3.3V

place reset button in the external part of the board

N.M.

15

C8

Digikey401-1427-1-ND

JTCK_ADP

U2

9

C5

6

NC

8

P2

18

C+

1

4

12

R1OUT

+3.3V

CAN_TX

1

SWD/COM

J8

7

JTCK_ADP

R6

ST3232CTR

GND

SMBUS_SCL

1

R1IN

13

GND

2

GND

15

SN65HVD232D

C6

5

RESET#_ADP

SMBUS_SDA

RESET#_BTN

7

14

16

100nF 25V

C4

8

+3.3V

2

GND

SMBUS

Stripline male 3x2 2.54mm

C1

USER COMMUNICATION CONFIG

RS:461-9771

GND

CAN COMMUNICATION

+3.3V

GND

GND

D

1

8

R2IN

0

Male Connector 2x10

Pitch 2.54 mm

Tyco Electronics 2 -1634688-0

RS: 473-8282

Farnell: 8395942

TD

RD

J10 as close as possible to j12 pin 10

12

VCC

3

V-

6

4.7k

I2C_SCL/USART_RX/CAN_RX

T2OUT

VCC

16

5

2

GND

4

CAN

RS-232

SERIAL COMMUNICATION

11

13

C2

J6

100nF 25V

6

100nF 16V

1

6

2

7

3

8

4

9

5

GND

SMBUS_SCL

SWD - USER COMMUNICATION

STEVAL-DPSLLCK1

STEVAL-DPSLLCK1 schematics

DB3560 - Rev 1

page 5/7