DocID026138 Rev 1

3/5

EVALSTPM32

Schematic diagrams

5

Figure 2. Metrology circuit schematic

C10

10n

R13

270K

R19

0R

R7

10K

L4

1500ohm

DL2

LED2

J6

SPI

R12

270K

R4

1M

C17

15p

C27

100n

C15

150p

C23

100u 10V

J8

N

1

T1

4626-X002

J4

Enable/RST

1

1

2

2

3

3

C20

4.7u

C16

15p

R18

1K

C14

150p

R16

6R

R3

100R

J9

L

1

L2

1500ohm

DL1

LED1

C24

22n

R15

470R

C13

150p

C8

100n

L3

1500ohm

R10

10K

R17

1K

R6

4.7K

J5

DIGITAL I/O

2

4

6

8

1

3

5

7

R14

270K

Y1

16MHz

C12

150p

R2

22K

L1

1500ohm

R8

10K

J7

DC Supply

C26

150p

RS1

BKW-M-R0003-5.0

C11

150p

R5

4.7K

C9

150p

U3

STPM32

INT1

6

LED2

5

LED1

4

CKin/XTAL1

3

XTAL2

2

CKout/ZCR

1

VCC

17

GNDreg

16

VDDA

15

GNDA

14

GNDref

13

GNDD

18

Ex

Ex

R9

10K

C25

10n

C19

100n

C22

100n

Vcc

Ip1

Vcc

In1

Vcc

Vcc

Vref1

1 Int1

2 NC

3 Led2

4 En/Rst

5 Led1

6 Gnd

7 Ckin

8 Ckout/ZCR

1 NC

2 MOSI

3 Gnd

4 MISO

5 SCS

6 SCL

7 NC

8 SYN

9 NC

10 Vcc

RS1

BKW

1

To assemble in case current sensor is Current Transformer

To assemble in case current sensor is Shunt

GIPG25032014DI1550