1

1

2

2

3

3

4

4

D D

C C

B B

A A

STMicroelectronics

Title:

Number: Rev: Sheet of

C.1(PCB.SCH)

Date:

02/04/2012

M24lr04e-discovery

LD1

blue

R7

660

1

4 3

2

B1

RESET (Black)

C8

100nF

RESET#

C10

20pF

C6

20pF

X1

HC-49S-C20SSA-4.000

R2

60

4 1

3 2

X2

MC306-G-06Q-32.768 (manufacturer JFVNY)

C12

6.8pF

C11

6.8pF

C4

100nF

VCC

C3

100nF

L1

BEAD

C2

1uF

C5

100nF

VCCA

C1

1uF

LED

1

4 3

2

B2

USER (Blue)

C9

100nF

R5

0

RESET

R1

4K7

VCC

User_PB

1

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

9

9

10

10

11

11

12

12

COM3

13

COM2

14

COM1

15

COM0

16

17

17

18

18

19

19

20

20

21

21

22

22

23

23

24

24

25

25

26

26

27

27

28

28

U3

GH08172T

Addr/Therm

1

GND

2

VDD

3

SCL

4

EVENT

5

SDA

6

U2

STTS751-0WB3F

1

2

3

4

CN1

SWIM

1

2

CN2

Exteranl DC +3V3-6V

1

2

3

JP1

Z1

MMSZ5227BT1 (do not fit)

LCD_COM0

LCD_COM1LCD_COM2

LCD_COM3

LCD_SEG0

LCD_SEG1

LCD_SEG2

LCD_SEG3

LCD_SEG4

LCD_SEG5

LCD_SEG6

LCD_SEG7

LCD_SEG8

LCD_SEG9

LCD_SEG10

LCD_SEG11 LCD_SEG12

LCD_SEG13

LCD_SEG14

LCD_SEG15

LCD_SEG16

LCD_SEG17

LCD_SEG18

LCD_SEG19

LCD_SEG20

LCD_SEG21

LCD_SEG22

LCD_SEG23

OSC_IN

OSC_OUT

OSC32_IN

OSC32_OUT

User

VCC

C14

10nF

R8

20K

R9

15K

R10

15K

VCC

I2C1_SDA

I2C1_SCL

RF_WIP/BUSY

RF_POWER

Antenna

RF_POWER

VCC

C15

4.7uF

VCC

VCCA

VCC

LED

PA0

1

PA1

2

PA2

3

PA3

4

PA4

5

PA5

6

PA6

7

PA7

8

AVSS

9

VDD

10

VDDA

11

VREF+

12

VLCD

13

PE0

14

PE1

15

PE2

16

PE3

17

PE4

18

PE5

19

PD0

20

PD1

21

PD2

22

PD3

23

PB0

24

PB1

25

PB2

26

PB3

27

PB4

28

PB5

29

PB6

30

PB7

31

PF0

32

PD4

33

PD5

34

PD6

35

PD7

36

PC0

37

PC1

38

VDDIO

39

VSSIO

40

PC2

41

PC3

42

PC4

43

PC5

44

PC6

45

PC7

46

PE6

47

PE7

48

U1

STM8L152C6T6

R3

0

VCC

Not Fitted

LCD_COM0

LCD_COM1

LCD_COM2

LCD_SEG0

LCD_SEG1

LCD_SEG2

LCD_SEG3

LCD_SEG4

LCD_SEG5

LCD_SEG6

LCD_SEG7

LCD_SEG8

LCD_SEG9

LCD_SEG10 LCD_SEG11

LCD_SEG12

LCD_SEG13

LCD_SEG14

LCD_SEG15

LCD_SEG16

LCD_SEG17

LCD_SEG18

LCD_SEG19

LCD_SEG20

LCD_SEG21

LCD_SEG22

LCD_SEG23

LCD_COM3

I2C1_SDA

I2C1_SCL

RF_WIP/BUSY

TemSensor_TNT

OSC_IN

OSC_OUT

RESET#

User_PB

OSC32_IN

OSC32_OUT

R6

20K

VCC

I2C1_SCL

I2C1_SDA

TemSensor_TNT

C13

100nF

VCC

R4

33K

VCC

Not Fitted

VCC

1 1

MB1021

Vin

1

GND

2

INHIBIT

3

BYPASS

4

Vout

5

U5

LD3985M33R

C16

1uF[ceramic]

C18

100nF

C17

1uF[ceramic]

REG_3V3

C7

1uF[ceramic]

TP1

PE7

Vout

1

AC0

2

AC1

3

VSS

4

SDA

5

SCL

6

RF WIP/BUSY

7

VCC

8

U4

M24LR04E-RMN6T/2

C19

10nF

I2C1_SDA

I2C1_SCL

VCC

I2C connector

R11 0

C20

[N/A]

1

2

3

4

5

CN3

Header 5

RF_WIP/BUSY

C21

TLNK157M006R2500 (150uF)

C22

[N/A]