ST STEVAL-IFS012V1 User Manual

UM0690

www.BDTIC.com/ST

User manual

STEVAL-IFS012V1 demonstration board for

multiple temperature sensors

Introduction

This user manual explains the functions of the multi-device temperature sensor
demonstration board which is based on a motherboard and daughter card approach. The
complete system consists of the motherboard with an ST72F651 microcontroller and
daughter cards with temperature sensors. The temperature sensors supported by this
system are:

■ STLM20

■ STTS424E02

■ STTS75

■ STDS75

■ STLM75

■ STCN75

This board can operate in 2 modes:

■ Standalone / external-power mode

■ USB-powered mode / full-featured mode

The board's configuration and operation in both modes is explained in different sections. To
select the desired mode, there is a power selection switch (SW5) on the board which
enables the appropriate selection. When this board is connected to a computer through the
USB cable then it also behaves as a mass storage device. The default state of the board
(with USB connection) is mass storage mode. It switches to temperature-sensor mode using
a graphical user interface (GUI).

Figure 1. Multi-device temperature-sensor demonstration board

AM03604v1

June 2010 Doc ID 15482 Rev 1 1/39

www.st.com

Contents UM0690

www.BDTIC.com/ST

Contents

1 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.1 Package contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.2 Hardware description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.2.1 On-board components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.2.2 Power supply selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2 External power mode selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3 USB-powered mode selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4 External power mode of board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.1 Powering of the board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.2 Address selection on the board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.2.1 Address configuration of different sensors using the switches . . . . . . . 11

4.3 Value of temperature-sensor registers in a standalone case . . . . . . . . . . 13

4.3.1 STTS75, STLM75, STDS75 and STCN75 . . . . . . . . . . . . . . . . . . . . . . . 13

4.3.2 STTS424E02 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.3.3 STLM20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.4 Sequence for operation of board in a standalone case . . . . . . . . . . . . . . 14

5 USB-power/GUI mode of board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.1 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.2 Powering of board in GUI mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.3 Switching to temperature-sensor mode . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.3.1 The GUI window for STTS75, STLM75, STDS75, STCN75 sensors . . 18

5.3.2 GUI Window for STTS424E02 sensor . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5.3.3 GUI Window for the STLM20 sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.4 RTC mode of GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.4.1 RTC alarm setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.4.2 WATCHDOG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.4.3 Square wave option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.4.4 Calibration and output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

2/39 Doc ID 15482 Rev 1

UM0690 Contents

www.BDTIC.com/ST

5.4.5 HT bit reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

5.4.6 FT bit and output bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

5.5 Plotter mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

5.5.1 Dynamic mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

5.5.2 NAND mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.6 Application LED's . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Appendix A Schematic and bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

A.1 Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

A.2 Bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Appendix B Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Doc ID 15482 Rev 1 3/39

List of tables UM0690

www.BDTIC.com/ST

List of tables

Table 1. Power selection for daughter card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Table 2. Switch settings for selecting different addresses of STT75/STLM75/STDS75/STCN75 . . 12

Table 3. Switch settings for selecting different addresses of the STTS424E02 . . . . . . . . . . . . . . . . 13

Table 4. Default values of sensor registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Table 5. Default values of sensor registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Table 6. BOM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Table 7. Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Table 8. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

4/39 Doc ID 15482 Rev 1

UM0690 List of figures

www.BDTIC.com/ST

List of figures

Figure 1. Multi-device temperature-sensor demonstration board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2. Hardware description of demonstration board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 3. Power selection switch (SW5) to select external power . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 4. Power selection switch (SW5) to select for USB-power . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 5. Logic level and relative switch positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 6. GUI window on startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 7. Board connected to GUI and status changed to connected in status bar. . . . . . . . . . . . . . 16

Figure 8. Temperature-sensor mode selected. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 9. Temperature-sensor child Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 10. GUI child window for STTS75/STDS75/STLM75/STCN75 . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 11. Address error-message display on the GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 12. Active temperature-sensor child window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 13. Temperature-sensor register settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 14. Configuration of the STTS424/STTS424E02 sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 15. EEPROM setting for STTS424E02 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 16. GUI Window for STLM20 temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 17. RTC selection Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 18. GUI window for RTC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 19. RTC register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 20. Plotter selection Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 21. Plotter window for dynamic mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 22. Plotter window with dynamic mode graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 23. Plotter window with NAND mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 24. Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Doc ID 15482 Rev 1 5/39

Getting started UM0690

www.BDTIC.com/ST

1 Getting started

1.1 Package contents

The multi-device temperature-sensor demonstration board includes the following items:

● Hardware content:

– One motherboard

– Two daughter cards (STTS75 - TSSOP8 package and STLM20 - UDFN package)

Daughter cards for all sensors can be ordered individually.

● Documentation:

–User manual

– Quick reference manual

● GUI installation file

1.2 Hardware description

Figure 2. Hardware description of demonstration board

6/39 Doc ID 15482 Rev 1

AM03605v1

UM0690 Getting started

www.BDTIC.com/ST

1.2.1 On-board components

Major blocks present on the board are:

● Microcontroller

● 64 MB NAND flash

● RTC

● Graphic LCD (122 X 32)

● 3 V button battery

● Power jack for external power supply

● USB jacket for USB connection

● Switches SW2, SW3 and SW4 to configure the address of the temperature sensor

● Power selection switch (SW5) to select between external-power and USB-power

1.2.2 Power supply selection

The board can work in two different power supply modes.

● External power mode

● USB-powered mode

Selection of required power mode is done through the SW5 switch.

Doc ID 15482 Rev 1 7/39

External power mode selection UM0690

www.BDTIC.com/ST

2 External power mode selection

To select the external supply mode position the switch (SW5) as shown in Figure 3. Then
plug in the DC adapter (8 V - 20 V,1 A and center positive) with a female connector to the
power jacket (J6) and the green colored LED (D8) turns on.

Figure 3. Power selection switch (SW5) to select external power

AM03606v1

8/39 Doc ID 15482 Rev 1

UM0690 USB-powered mode selection

www.BDTIC.com/ST

3 USB-powered mode selection

To select USB-powered mode unplug the external power supply and then position the power
switch, as shown in Figure 4. Then plug the USB cable into the USB socket (J2) on the
board. A red colored LED (D6) turns on and the board is powered up through USB-power.

Figure 4. Power selection switch (SW5) to select for USB-power

AM03607v1

Note: At any time only one power supply should be plugged in (either USB or external power

adapter). The power LED (green (D8) for external supply and red (D6) for USB supply) turns
on as soon as the power is plugged in but the power is connected to the board only by
appropriate switch settings as shown in Figure 3 and Figure 4.

Doc ID 15482 Rev 1 9/39

External power mode of board UM0690

www.BDTIC.com/ST

4 External power mode of board

This mode is also called the standalone mode of board. In this mode the board is supplied
by an external power supply and continuously displays the time and temperature on the
LCD. A computer interface is not needed for this mode.

4.1 Powering of the board

The motherboard can be powered to 5 V using an external supply or a USB supply whereas
daughter cards can be powered to one of 1.8 V/2.5 V/3.3 V/5.0 V using the J16 and JP1
jumpers on the motherboard.

The procedure for powering the board is explained below.

● Steps:

– Select the power selection switch (SW5) as external power mode as explained in

Figure 3

– Place the jumper on J16

– To supply the temperature-sensor daughter card with 5 V, place the jumper on pin

1 and pin 2 of J16. If the daughter card is to be supplied with alternate voltage
(1.8 V/2.5 V/3.3 V) then place the jumper on pin 2 and pin 3 of J16

– To supply the daughter card with 3.3 V, place the jumper on pin 1 and pin 2 of JP1

or to select 2.5 V, place the jumper on pin 3 and pin 4 of JP1, or for 1.8 V place the
jumper on pin 5 and pin 6 of JP1. Refer to table 1 for daughter card powering.

Table 1. Power selection for daughter card

Jumpers

Needed voltage

J16 JP1

5 V Pins 1 and 2 n/a

3.3 V

2.5 V Pins 3 and 4

1.8 V Pins 5 and 6

Pins 2 and 3

Pins 1 and 2

Note: At any time only one jumper should be present on JP1

● Plug in the DC power supply through the adapter (8 V - 20 V, 1 A output). As soon as

power is plugged in, the green colored LED (D8) turns on.

Note: This LED (D8) shows only whether power is connected or not. Power to the board is

selected through the power selection switch (SW5).

4.2 Address selection on the board

This evaluation board supports different temperature sensors which are present on different
daughter cards. Address lines of digital sensors are configured using the switches (SW2,
SW3, SW4) present on the motherboard.

10/39 Doc ID 15482 Rev 1

UM0690 External power mode of board

www.BDTIC.com/ST

Logic level is assigned to the address line using the address selection switches. Figure 5
shows the position of the switch and the respective logic level assigned by that switch.

Figure 5. Logic level and relative switch positions

Switch Position For Address Lines

Logic Level at
Address Lines

Floating

HIGH
(Logic 1)

LOW
(Logic 0)

4.2.1 Address configuration of different sensors using the switches

The following are the steps for configuring the address lines of different sensors

STTS75,STDS75,STLM75 and STCN75

STTS75, STDS75, STLM75 and STCN75 all are digital temperature sensors with 3 address
lines. There are 8 possible addresses for these sensors.

AM03608v1

SW2 corresponds to A0, SW3 corresponds to A1 and SW4 corresponds to A2 address lines
of the sensors.

Listed below are the allowed addresses and their settings for STTS75, STDS75, STLM75
and STCN75:

● Address 1 = 0x90, => SW4 = 0, SW3 = 0, SW2 = 0

● Address 2 = 0x92, => SW4 = 0, SW3 = 0, SW2 = 1

● Address 3 = 0x94, => SW4 = 0, SW3 = 1, SW2 = 0

● Address 4 = 0x96, => SW4 = 0, SW3 = 1, SW2 = 1

● Address 5 = 0x98, => SW4 = 1, SW3 = 0, SW2 = 0

● Address 6 = 0x9A, => SW4 = 1, SW3 = 0, SW2 = 1

● Address 7 = 0x9C, => SW4 = 1, SW3 = 1, SW2 = 0

● Address 8 = 0x9E, => SW4 = 1, SW3 = 1, SW2 = 1

Doc ID 15482 Rev 1 11/39

External power mode of board UM0690

www.BDTIC.com/ST

Table 2. Switch settings for selecting different addresses of STT75/STLM75/STDS75/STCN75

Address

line

SW2 (A0)

SW3 (A1)

SW4 (A2)

Address

1 (0x90)

Address

2 (0x92)

Address

3(0x94)

Address

4 (0x96)

Address

5 (0x98)

Address

6 (0x9A)

Address

7 (0x9C)

Address

8 (0x9E)

STTS424E02

STTS424E02 is also a digital temperature sensor with 3 address lines. There are 8 possible
addresses for this sensor.

SW2 corresponds to A0, SW3 corresponds to A1and SW4 corresponds to A2 address lines
of the sensors.

Listed below are the allowed addresses and there settings for the STTS424E02 sensor:

● Address 1 = 0x30, => SW4 = 0, SW3 = 0, SW2 = 0

● Address 2 = 0x32, => SW4 = 0, SW3 = 0, SW2 = 1

● Address 3 = 0x34, => SW4 = 0, SW3 = 1, SW2 = 0

● Address 4 = 0x36, => SW4 = 0, SW3 = 1, SW2 = 1

● Address 5 = 0x38, => SW4 = 1, SW3 = 0, SW2 = 0

● Address 6 = 0x3A, => SW4 = 1, SW3 = 0, SW2 = 1

● Address 7 = 0x3C, => SW4 = 1, SW3 = 1, SW2 = 0

● Address 8 = 0x3E, => SW4 = 1, SW3 = 1, SW2 = 1

12/39 Doc ID 15482 Rev 1

UM0690 External power mode of board

www.BDTIC.com/ST

Table 3. Switch settings for selecting different addresses of the STTS424E02

Address

line

Address

1 (0x30)

Address

2 (0x32)

Address

3 (0x34)

Address

4 (0x36)

Address

5 (0x38)

Address

6 (0x3A)

Address

7 (0x3C)

Address

8 (0x3E)

SW2 (A0)

SW3 (A1)

SW4 (A2)

STLM20

STLM20 is an analog temperature sensor with no address lines.

After setting the address press the reset button (RESET) present on the board.

Then the board starts to function, showing the temperature and the time and sensor name
on the LCD.

Note: The jumper for the SDA line of RTC (J2) should be connected before pressing the RESET

button on the board.

4.3 Value of temperature-sensor registers in a standalone case

4.3.1 STTS75, STLM75, STDS75 and STCN75

Table 4. Default values of sensor registers

Register name Value

Over saturation (Tos) 35 Degree Centigrade

Hysteresis (Thys) 15 Degree Centigrade

Configuration (Tconfig) 0x00

4.3.2 STTS424E02

Table 5. Default values of sensor registers

Register name Value

Configuration 0x00,0x08 (alarm enabled)

Alarm temperature lower boundary trip 15 Degree Centigrade

Alarm temperature upper boundary trip 30 Degree Centigrade

Critical temperature trip 35 Degree Centigrade

Doc ID 15482 Rev 1 13/39

External power mode of board UM0690

www.BDTIC.com/ST

4.3.3 STLM20

STLM20 is an analog sensor and therefore there is no register configuration for it. Also there
is no alert output from the sensor.

4.4 Sequence for operation of board in a standalone case

● Steps for standalone mode:

– Plug the temperature-sensor daughter card into the motherboard

– Accordingly, configure the address lines of the sensor using the SW2, SW3, and

SW4 switches, as explained in Section 4.2

– Move the power selection switch (SW5) to select the external power supply as

explained in Figure 3

– Put the jumper on the SDA line of the RTC (J2)

– Plug the power adapter into the board and switch on the supply

– Press the reset button (RESET) present on the board

– The application starts running. Temperature and time are displayed on the LCD.

Note: To change the address of the sensor, switch off the supply, configure the new address and

again plug in the supply, the application starts with a new address configuration.

14/39 Doc ID 15482 Rev 1

UM0690 USB-power/GUI mode of board

www.BDTIC.com/ST

5 USB-power/GUI mode of board

The second mode of operation of this multi-device temperature-sensor board is with a
graphical user interface (GUI) through a USB connection.

In this mode, if the GUI is not connected then the board behaves as a mass storage device
and is seen as a removable drive on the computer.

To use the board in temperature-sensor mode, connect it to the computer using a USB cable
and communicate with the GUI using the USB communication protocol. The GUI is used to
configure the temperature-sensor registers and to explore all the features of the temperature
sensor.

5.1 Getting started

Double click on the setup of the .exe file to install the GUI on the host system.

To install the GUI, the user should have administrative rights, as the set-up overwrites files
(.dll) in the system folder that are protected using administrative rights. If the user does not
have administrative rights, this GUI can not be installed (error message: 0x80040707
appears).

Then open up the temperature-sensor GUI by clicking on the GUI icon. The GUI window, as
shown in Figure 6, opens.

Figure 6. GUI window on startup

AM03609v1

Doc ID 15482 Rev 1 15/39

USB-power/GUI mode of board UM0690

www.BDTIC.com/ST

5.2 Powering of board in GUI mode

The steps for powering the board in GUI mode follow.

● Steps:

– Select the power selection switch (SW5) to USB-power mode as explained in

Figure 4

– Place the jumper on J16.

To supply the daughter card with 5 V, place the jumper on pin 1 and pin 2 of J16. If the
daughter card is to be supplied with alternate voltage (1.8 V/2.5 V/3.3 V) then:

– Place jumper on pin 2 and pin 3 of J16

– To supply the daughter card with 3.3 V, place the jumper on pin 1 and pin 2 of the

JP1 or to select for 2.5 V place the jumper on pin 3 and pin 4 of the JP1 or for 1.8
V place the jumper on pin 5 and pin 6 of the JP1. Refer to Ta bl e 1 .

Note: (At any time only one jumper should be present on JP1).

– Plug the USB cable into the USB socket on the board. As soon as the USB cable

is plugged in the red colored led (D6) turns on.

Note: This LED (D6) shows only whether the USB is connected or not. Power to board is selected

through the power selection switch (SW5).

– After plugging in the USB cable, and if the power switch is selected correctly, the

status bar of the GUI changes to Connected as shown in Figure 7.

Figure 7. Board connected to GUI and status changed to connected in status bar

5.3 Switching to temperature-sensor mode

By default the board is in mass storage mode and when the GUI is opened it shows the
mass storage mode in the status bar. Once the board is connected to the GUI and the status
changes to Connected in the status bar, press the temperature-sensor mode selection
button in the toolbar to switch to temperature-sensor mode. As the GUI goes into
temperature-sensor mode, all the 3 icons of the temperature sensor, clock and plotter
become active. The GUI appears as shown in Figure 8.

AM03610v1

16/39 Doc ID 15482 Rev 1

UM0690 USB-power/GUI mode of board

www.BDTIC.com/ST

Figure 8. Temperature-sensor mode selected

AM03611v1

In this mode the LCD shows:

● Temperature and °C written in the first row

● Date and time in the second row

Select the temperature-sensor icon from the tool bar, it opens the list of sensors on the GUI
as shown in Figure 9. Click on the desired sensor and press the OK button on the GUI. If the
sensor present on the board is different to the one selected on the GUI, an error message
pops up on the GUI showing the wrong selection of the sensor. In the case of an error
message, re-select the correct sensor from the GUI and press the OK button. When the
correct sensor is selected, the window opens in the GUI.

Figure 9. Temperature-sensor child Window

AM03612v1

Doc ID 15482 Rev 1 17/39

USB-power/GUI mode of board UM0690

www.BDTIC.com/ST

There are 6 sensors supported by the motherboard and there are 3 different GUI windows to
support all the sensors. The GUI child window is for the:

● STTS75/STLM75/STDS75/STCN75

● STTS424E02

● STLM20

5.3.1 The GUI window for STTS75, STLM75, STDS75, STCN75 sensors

The STTS75, STLM75, STDS75, and STCN75 sensors are supported by a single GUI
window, as shown in Figure 10. There are radio buttons for selecting one of four possible
sensors (STTS75, STLM75, STDS75, and STCN75). The LCD display shows TS75 for all of
the STTS/LM//DS/CN temperature sensors.

Below are the steps for operating these sensors using the GUI:

● Select one of the radio buttons present in the Select the Temperature Sensor area on

the GUI. This enables the GUI for one of the selected sensors
(STTS75/STLM75/STDS75/STCN75)

● Choose the address from the drop down menu of the Choose Address block. If the

address selected from the GUI is the same as configured on the board (as described in

Section 4.2.1), the remaining part of the GUI is enabled or else an error message

shows up on the GUI as shown in Figure 11

● In the case of an error message, check the correct address from the GUI

● Configure the different sensor registers and observe the behavior on the GUI and on

the board.

Figure 10. GUI child window for STTS75/STDS75/STLM75/STCN75

AM03613v1

18/39 Doc ID 15482 Rev 1

UM0690 USB-power/GUI mode of board

www.BDTIC.com/ST

Figure 11. Address error-message display on the GUI

AM03614v1

Figure 12. Active temperature-sensor child window

AM03615v1

Register configuration for STTS75,STLM75,STDS75, and STCN75 sensors

There are 4 different registers for each sensor.

These registers are:

● 8-bit configuration register

● 16-bit over saturation (Tos) register

● 16-bit hysteresis (Thys) register

● 16- bit read-only temperature register

The GUI has a register section to configure these registers.

Doc ID 15482 Rev 1 19/39

USB-power/GUI mode of board UM0690

www.BDTIC.com/ST

1. Configuration register:

– The GUI has the drop down buttons for bits of the configuration register. Select for

the desired bits in the configuration register

– Select the Write button to program the sensor with the selected value

– One-Shot is enabled only for the STTS75 sensor

2. Over saturation register (Tos):

– This register is used to enter the Over saturation temperature

– Enter the desired temperature using the slider or the up/down button

– Select the Write button to program the sensor with the selected temperature

– Setting configuration is shown in Figure 13

3. Hysteresis register (Thys):

– This register is used to enter the hysteresis temperature

– Enter the desired Hysteresis temperature using the slider or the up/down button

– Press the Write button to program the sensor with the hysteresis value

– Setting configuration is shown in Figure 13

4. Temperature register:

– This register is used to show the temperature measured by the sensor.

– The Once button is used to read the temperature at any one instant.

– The Loop button is used to continuously measure and display the temperature.

– An alarm is seen on the GUI only when the Once or Loop button is pressed.

Pressing Once reads the instantaneous temperature value and latches the
instantaneous alarm condition on the GUI. The Loop button, pressed continuously,
monitors the temperature and alarm condition and displays the same on the GUI.
Stopping the loop button latches the last measured value of temperature and the
last alarm condition on the GUI.

The read button is used for reading the values back from the sensor present on the board.
As soon as the address is checked the sensor registers show the default settings of the
registers in this window.

There is a one shot mode button present on the GUI which functions only for the STTS75
sensor. One shot mode puts the sensor in shutdown mode and then reads temperature
register. After one shot mode, the shutdown pin of the configuration register sets to '1'. To
bring the sensor to normal mode, write the shutdown bit to '0'.

2

There is a slider for the frequency setting for I
fixed to 10 kHz. In order to avoid the disruption of sensor communication with the
microcontroller, this frequency slider does not affect the sensor I

C communication with sensor. This is default

2

C communication

frequency.

20/39 Doc ID 15482 Rev 1

UM0690 USB-power/GUI mode of board

www.BDTIC.com/ST

Figure 13. Temperature-sensor register settings

AM03616v1

Alarm in STTS75,STLM75,STDS75,STCN75 sensors

Alarm status can be observed in Once or Loop condition. On pressing the Once button, the
instantaneous alarm condition is latched on the GUI whereas in Loop condition, the alarm
condition is monitored continuously and is displayed on the GUI. When the Loop condition is
stopped, the last alarm status is latched and shown on the GUI.

This alarm is used to indicate the behavior of the OS pin output of the temperature sensor.

● Default state: alarm OFF

● Temperature reaches above over saturation temperature (Tos): alarm LIGHTS UP

● Temperature reaches below Thys: alarm OFF

On the motherboard this alarm signal is shown by the D5 LED. This is a RED colored LED
which turns on whenever there is an alert signal from the sensor and turns off when the alert
is not present.

5.3.2 GUI Window for STTS424E02 sensor

STTS424E02 is a simple digital temperature sensor also having on chip 2 Kb EEPROM.
The GUI for STTS424E02 also has an option for supporting the STTS424 without EEPROM.

Below are the steps to operate the STTS424E02 sensor in GUI mode:

● Plug the daughter card of the STTS424E02 into the motherboard

● Select for STTS424/STTS424E02 sensor option from the GUI as shown in Figure 9

● Select STTS424E02 sensor radio button from sensor options in Select the Temperature

Sensor area in the GUI. On selecting the STTS424E02 sensor, the Edit EEPROM
option also gets enabled on the GUI

● Check the address from Choose Address area. If the address configured on the board

(explained in Section 4.2.1) is different from the address selected from the GUI, an

Doc ID 15482 Rev 1 21/39

USB-power/GUI mode of board UM0690

www.BDTIC.com/ST

error message appears on the GUI. In case of error, re-check the address with the
correct option.

● All the registers show the default readings at first selection

● Press the Loop button to continuously read the temperature on the GUI

● Configure the different registers through the GUI and observe the behavior of the

sensor

Register configuration for the STTS424E02 sensor

There are 4 read/write registers in the STTS424E02 temperature sensor:

1. Configuration register:

– The GUI has drop down buttons for bits of the configuration register. Select for the

desired bits in the configuration register

– Press the Write button to program the sensor with the selected value. Figure 14

shows the settings

2. Upper temp register:

– This register is used to enter the alarm temperature upper boundary settings for

the sensor

– Enter the desired temperature using the slider or through the up/down button

– Press the Write button to program the sensor with the selected temperature.

Figure 14 shows the settings

3. Lower temp register:

– This register is used to enter the alarm temperature lower boundary settings for

the sensor

– Enter the desired temperature setting using the slider or the up/down button

– Press the Write button to program the sensor with this value. Figure 14 shows the

settings

4. Critical temperature register:

– This register is used to enter the critical temperature settings for the sensor

– Enter the desired temperature setting using the slider or the up/down button

– Press the Write button to program the sensor with this value. Figure 14 shows the

settings

5. Temperature register (read only):

– This register is used to show the temperature measured by the sensor

– The Once button is used to read the temperature at any one instant

– The Loop button is used to continuously measure and display the temperature.

2

There is a slider for setting the frequency of I
and it is fixed to default 100 kHz. In order to avoid communication failure, this slider does not
affect the frequency in the sensor.

C communication for sensor communication

22/39 Doc ID 15482 Rev 1

UM0690 USB-power/GUI mode of board

www.BDTIC.com/ST

Figure 14. Configuration of the STTS424/STTS424E02 sensor

AM03617v1

Alarm setting for the STTS424/STTS424E02 sensor

There are 3 alarms in the STTS424E02 sensor:

1. Below Alarm Window (BAW):

This alarm occurs when the measured temperature goes below the temperature setting in
the alarm temperature lower boundary register (lower temp register). This alarm lights up as
the BAW alarm on the GUI. As the measured temperature becomes greater than the below
alarm window setting the alarm switches off.

2. Above Alarm Window (AAW):

This alarm occurs when the measured temperature goes above the temperature setting in
the alarm temperature upper boundary register (upper temp register). This alarm lights up
as the AAW alarm on the GUI. As the measured temperature becomes lower than the above
alarm window setting the alarm switches off.

3. Above Critical Temperature (ACI):

This alarm occurs when the measured temperature goes above the temperature setting in
the critical temperature register. This alarm lights up as the ACI alarm on the GUI. As the
measured temperature becomes lower than the critical alarm setting the alarm switches off.

Note: The Alarm icon lights up on the GUI only when the O/P Control bit is enabled in the

configuration register and one of the above mentioned alarms has occurred, and then only
the alarm LED on the board (D5) turns on.

BAW, AAW, ACI alarms status can be seen on the GUI either in Once or Loop mode.
Pressing of the Once button shows the instantaneous alarm conditions and latches the
same on the GUI. This condition is refreshed by again pressing the Once button. The Loop
button pressed continuously monitors the alarm condition and displays it on the GUI.
Stopping the Loop button latches the last condition of the alarm over the GUI. These are
refreshed by again using the Loop or Once read button. For the first time address check, the
default state of the upper temp register, lower temp register and critical temp register is
0x00, therefore alarm conditions for the AAW and ACI are met and so these are seen as
turning on the GUI.

Note: The alarm is observed only when the register settings follow this order: Critical temperature

> above alarm window temperature > below alarm window temperature.

Note: To observe the alarms occurring on the board, the O/P control bit should be enabled in the

configuration register.

Doc ID 15482 Rev 1 23/39

USB-power/GUI mode of board UM0690

www.BDTIC.com/ST

EEPROM setting for the STTS424E02 sensor

The STTS424E02 sensor has on chip EEPROM of 2 Kb size. For the STTS424E02 sensor
selected on the GUI, the Edit EEPROM button is enabled. The EEPROM window opens by
clicking this edit EEPROM button.

Below are the steps for using the EEPROM for the STTS424E02 sensor:

● Check the eeprom address. The last three bits of the eeprom address are derived from

the last 3 bits of the temperature-sensor address.

● For correct address checked, the GUI for eeprom gets enabled with an editable area for

256 bytes.

● To read the data byte at any specific location, select the location in the editable window

and press the read byte button, it reads the selected location data from the sensor
eeprom and displays at the location in the editable area on the GUI.

● The Read All button reads all the 256 bytes from sensor eeprom and displays it in the

editable area

● To write a single byte at a specific location, change the byte value by typing and press

the enter button on the computer. Then press the write byte to write the data into
eeprom.

● To write all the 256 bytes of eeprom, press the Write All button on the GUI. This writes

the bytes as seen in the editable box. To change the bytes in the editable box, type the
new value and press enter and then go to type a new value to other location. After all
the values are changed according to the requirement, press Write All to program the
values in eeprom.

● Fill Buffer is used to fill the area of eeprom with the same data byte. Type the memory

location from where the data is to be written and also the destination memory location
address. Then enter the data byte in fill with area. Pressing the fill buffer button
programs the eeprom selected area with the selected data byte. This data byte can be
seen on the GUI by pressing the read all button.

● Copy block is used to copy the data from memory location 0x00 -0x7F to location 0x80-

0xFF. Therefore both upper and lower 1 Kb data is similar after the copy block
command. Settings for eeprom on the STTS424E02 sensor is shown in Figure 15.

Figure 15. EEPROM setting for STTS424E02

24/39 Doc ID 15482 Rev 1

AM03618v1

UM0690 USB-power/GUI mode of board

www.BDTIC.com/ST

5.3.3 GUI Window for the STLM20 sensor

The STLM20 is an analog temperature sensor. Below are the steps for using the GUI for the
STLM20:

● Plug the STLM20 daughter card into the motherboard

● Select the STLM20 sensor on the GUI as seen in Figure 16

● The Once button reads the voltage output value from the sensor and displays the

respective temperature on the GUI

● The Loop button continuously reads the voltage from the STLM20 and displays the

corresponding temperature

Figure 16. GUI Window for STLM20 temperature sensor

5.4 RTC mode of GUI

On powering up the board, the RTC clock is seen as halted and shows the time at which the
power was put down. The clock starts running only after resetting the HT bit in the RTC GUI
window. In standalone case, the HT bit is handled in firmware.

AM03619v1

Doc ID 15482 Rev 1 25/39

USB-power/GUI mode of board UM0690

www.BDTIC.com/ST

RTC date and time setting

Click on the Clock icon in the toolbar of the GUI. The RTC selection radio button appears on
the GUI as shown in Figure 17.

● Select for RTC M41T81s and the RTC child window opens, as shown in Figure 18

● The Update button is used to enable the configuration of the RTC. Pressing the Update

button enables the GUI window for RTC configuration. It also reads the RTC registers
from the on-board RTC and displays the same on the GUI

● After pressing the Update button, reset the HT bit to see the clock ticking on the display.

● The user can configure the RTC Date and Time by clicking on the Set Time button on

the GUI. It programs the on-board RTC with the system date and time

● CEB, Stop Bit, OFIE Bit are check boxes to enable or disable the respective bit in the

RTC. Checking the box and then pressing the Write button sets the bits and un­checking them and clicking on Write button resets the bits

● The Program button configures the RTC with the current settings visible over the GUI

● The RTC Reg button shows the RTC registers and the values present in those

registers, as shown in Figure 19.

Figure 17. RTC selection Window

Figure 18. GUI window for RTC

26/39 Doc ID 15482 Rev 1

AM03620v1

AM03621v1

UM0690 USB-power/GUI mode of board

www.BDTIC.com/ST

Figure 19. RTC register

AM03622v1

5.4.1 RTC alarm setting

● Set the alarm date and time using the alarm section in the RTC GUI window

● Check the AFE bit to observe the alarm output on the IRQ pin of the RTC on the board.

If the AFE bit is not set then in alarm condition, the alarm flag is set in FLAG
REGISTER of RTC but LED D3 on the board does not turn on as there is no active
signal on the IRQ pin.

● Press the Write button to enter these alarm settings in the RTC present on the board.

Repeat Mode setting is for setting the repetitive alarm.

● Alarm status can be seen on the GUI by pressing the Read Alarm button. Pressing the

Read alarm button again clears the alarm register of the RTC and its new status is
shown on the GUI.

● The Reset button is used to reset the “OF” (oscillator failure) bit in the alarm register

and correspondingly the oscillator bit alarm is also cleared by the reset button.

5.4.2 WATCHDOG

● Watchdog of the RTC is enabled by configuring the Multiplier and Resolution settings

and pressing the Write button

● The time period for watchdog is calculated by resolution x multiplier value. This value is

in seconds

● The watchdog alarm occurs when the time set in the watchdog register is lapsed

● The status of the watchdog alarm can be seen only by pressing the Read Alarm button.

Pressing again clears the WDG flag in the alarm register of the RTC and its status is
shown on the GUI

5.4.3 Square wave option

● Square wave of the RTC is configured by setting the frequency in square wave

registers.

● Set the output frequency from the drop down menu and check the Enable Square Wave

Output check box to observe the square wave on the IRQ pin of the RTC.

● Alarm LED D3 lights up on the board for the square wave output on the IRQ pin.

Doc ID 15482 Rev 1 27/39

USB-power/GUI mode of board UM0690

www.BDTIC.com/ST

Note: If the enable square wave output check box is not checked then there is no square wave at

the IRQ pin of the RTC and hence the alarm LED D3 does not light up on the board.

5.4.4 Calibration and output

● Enter the calibration value between 0-31 in the calibration register.

● Select the positive or negative calibration by selecting the sign in the Sign Bit drop

down menu.

● Press the Write button to configure the RTC calibration register with the selected

settings.

5.4.5 HT bit reset

At every power down the HT bit is set and re-powering the RTC has HT bit set. To start the
display of the clock on consecutive powering, HT bit should be reset each time.

● HT bit set and reset option is selected from the drop down menu

● Setting the HT bit halts the clock display of the RTC

● Resting the HT bit resumes the clock display of the RTC.

5.4.6 FT bit and output bit

● FT bit is a check box, if none of the RTC interrupt functions (alarm/WDG/SQW) are

selected then checking this box selects the frequency test function of the RTC and it is
displayed by the D3 LED lighting up. Resetting the bit switches off the frequency test
function

● The Output Bit check box is used to demonstrate the output driver function of the RTC.

If none of the alarm functions (alarm/WDG/SQW/FT) are selected then checking this bit
gives high level on the IRQ pin of the RTC and therefore the D3 LED does not turn on
whereas resetting the check box results in the turning on of the D3 LED on the
motherboard.

5.5 Plotter mode

There is a plotter icon in the toolbar, as shown in Figure 20. Click on this icon to open the
plotter application on the GUI. This plotter can be used to plot the temperature variation with
respect to time in real time (dynamic mode) or the temperature data can be stored on the
board NAND flash and then can be plotted at latter times (NAND mode).

28/39 Doc ID 15482 Rev 1

UM0690 USB-power/GUI mode of board

www.BDTIC.com/ST

Figure 20. Plotter selection Window

AM03623v1

5.5.1 Dynamic mode

Dynamic mode of the plotter is used to plot the real time temperature variation with respect
to time. In this mode the sensor measures the temperature at selected frequency and, in
parallel, plots that temperature on the graph.

Steps to be followed to plot the graph in dynamic mode:

● Select the dynamic mode from the mode selection drop down menu in the plotter

window

● Select the desired frequency (200 millisecond/500millisecond/1 second /10 second)

from the Time Interval drop down menu. This frequency denotes the timing interval
after which the next reading is taken and plotted on the graph.

● Click on the play button in the toolbar. It opens the plotter and starts plotting the graph,

as shown in Figure 21.

● To stop the plotting, click on the stop button located in the toolbar.

● Use the toolbar present on the graph window to expand or compress the scale on the

graph. This is shown in Figure 22.

● To store the image of the graph on computer, click on the floppy icon in the toolbar of

the plotter window. It stores the graph as a .tsg format.

● To store the graph data as text format in an excel sheet, click on the excel sheet icon in

the toolbar. It saves the temperature readings in an excel format.

● In order to see the previously stored graphs, click on the folder icon in the toolbar and

open the .tsg file.

Doc ID 15482 Rev 1 29/39

USB-power/GUI mode of board UM0690

www.BDTIC.com/ST

Figure 21. Plotter window for dynamic mode

AM03624v1

Figure 22. Plotter window with dynamic mode graph

5.5.2 NAND mode

● This mode is used for logging the temperature data in the NAND flash present on the

● Select the NAND mode from the mode selection drop down menu in the plotter window

● Select for the desired frequency (200 millisecond/500 millisecond/1 second /10

● Click on the Play Button in the toolbar. It starts logging the data in the NAND flash

AM03625v1

board. This logged data can be viewed at latter times in the graphical format in this
window

second) from the Time Interval drop down menu. This frequency denotes the timing
interval after which the next reading is taken and stored in the NAND flash

present on the board. A total of 100 Kb of NAND flash is used for data logging. The
percentage of NAND filled is shown by the status bar in the toolbar of the plotter

30/39 Doc ID 15482 Rev 1

UM0690 USB-power/GUI mode of board

www.BDTIC.com/ST

window. The first status bar shows that data is being logged while the second status
bar shows the percentage of data logged

● To stop the data logging click on the stop button in the toolbar

● To read the logged data from the on-board NAND, click on the Get Data icon in the

toolbar. It reads the data form board and then plots the graph of temperature versus
time. This is shown in Figure 23

● Use the toolbar present on the graph window to expand or compress the scale on the

graph

● To store the image of the graph on computer, click on the floppy icon in the toolbar of

the plotter window. It stores the graph as .tsg format

● To store the graph data as text format in an excel sheet, click on the excel sheet icon in

the toolbar. It saves the temperature readings in excel format

● In order to see the previously stored graphs, click on the folder icon in the toolbar and

open the .tsg file

● If the user wants that the graph should be plotted as soon as the data logging is

stopped, then the check box Receive Data After Logging should be checked before
starting the data logging (i.e. before clicking the PLAY button)

● Checking the Overwrite NAND FLASH overwrites the data in NAND flash in case the

whole of the 100 Kb gets filled. Therefore in this case the user looses the previously
stored data.

Figure 23. Plotter window with NAND mode

Note: At each logging of data in the NAND flash, previously stored data is lost and the NAND flash

is overwritten starting with new data.

AM03626v1

Doc ID 15482 Rev 1 31/39

USB-power/GUI mode of board UM0690

www.BDTIC.com/ST

5.6 Application LED's

There are 5 application specific LED's on the board:

2

● I

C LED: This is a green colored LED (D1) which blinks whenever there is an I2C

communication occurring in the application

● IRQ LED: This is a red colored LED (D3) which turns on in accordance to the signal

status on the IRQ pin of the RTC

● Alarm LED: This is a red colored LED (D5) which turns on in accordance with the alarm

output signal of sensors

● Power_USB LED: This is a red colored LED (D6) which turns on as soon as the USB

cable is plugged in

● Power_EXT LED: This is a green colored LED (D8) which turns on as soon as an

external adapter is plugged into the DC adapter jack.

32/39 Doc ID 15482 Rev 1

UM0690 Schematic and bill of material

www.BDTIC.com/ST

Appendix A Schematic and bill of material

A.1 Schematic

This is a schematic for the motherboard.

Figure 24. Schematic

J41

J41

1

J40

LCD DIODE_CON

D5

D7

16

11 12

13 14

15

D4

D2 D3

D6

R23

10k

R23

10k

CLK_D

MISO

SCL_D

#ALERT

#STBY_D

16

15

14

17

18

I/OVL4

I/OVL2

I/OVCC5

I/OVCC3

I/OVCC1

SCL

#STBY

MISO_D

CLK

#ALERT_D

JP1JP1

2_3.3V3_2.5V4_1.8V

C23

C23

U7

J40

1

J42

J42

1

J39

J39

1

ICCDATA

CON16APJ8CON16AP

1 2

J7

ICC_CONJ7ICC_CON

VCC

R25

R25

MOSI

#CS_D#CS

12

11

13

OE

I/OVL8

I/OVL6

I/OVCC7

GND

9

10

GND

MOSI_D

10uF/25V

10uF/25V

R27

100

R27

100

VDD

VDD

4

3

OUT

GND

INH1VIN+

ADJ

2

5

10uF-25V

10uF-25V

C24

C24

VDD

3

Q1

2N3904Q12N3904

DxP1

I2C_LED

IRQ2_LED

D1I2C D1I2C

D2 IRQ2D2 IRQ2

R2330 R2330

LEDs

R6330 R6330

VCC

D6

D7

47

48

44

NC4545NC4646NC47

NC48

NC22NC3

NC44NC55NC6

NC1

U1 NAND512W3AU1 NAND512W3A

3

1

6

R5

4.7kR54.7k

100nFC2100nF

C2

VDDF

4.7uF/10v

4.7uF/10v

VDDF

C1

C1

R4

4.7KR44.7K

R3

4.7kR34.7k

C4 100nFC4 100nF

VCC

C3

SW1 RESETSW1 RESET

R1

4k7R14k7

SCL
SDA

VDDA

100nFC3100nF

GND_A

USB+5V

IRQ1_LED

IRQ_LED

IRQD3IRQ

D3

R8330 R8330

D4

D5

42

40

39

41

I/O 5

I/O 4

I/O 643I/O 7

NC40

R/#B7#RE8#CE

NC1010NC11

9

11

#RE

R/#B

NAND_CE1

VDD_D

Q3

R11100 R11100
R10100 R10100

C5 100nFC5 100nF

C7 33pfC7 33pf

R71MR7

1M

C6

10uF-10VC610uF-10V

R90 R90

GND_A

GND_A

NC3838NC39

VDDF

VDDF

37

12

VDDF

XT1 12MHzXT1 12MHz

GND

GND

D4

GND

36

VSS

VCC

VCC

VSS

13

GND

STN3PF06Q3STN3PF06

C8

IRQ1D4IRQ1

R12 330R12 330

33

35

NC33

NC3434NC35

NC14

CLE16ALE17#WE

NC15

14

15

CLE

R33

10k

R33

10k

VDD_DB

VPP/ICCSEL
#RESET

RST_LCD

USB_DETECT

I2C_LED
ICCCLK
ICCDATA
VCC

VDDA

GND_A
GND

C9 33pfC9 33pf

J1USB_CONJ1USB_CON

6

100nFC8100nF

ALERT_LED

ALERTD5ALERT

D5

R13330 R13330

D2D3D0

D1

25

28

30

27

29

32

I/O1

I/O 0

I/O 231I/O 3

NC25

NC2626NC27

NC28

#WP

NC20

NC23

NC22

NC21

NC24

23

21

24

22

19

20

18

#WP

ALE

#WE

PCB Footprint = SMD-1206

PCB Footprint = SMD-1206

AIN7

R32

10k

R32

10k

48

PE4/PWM1

49

VPP/ICCSEL

50

RESET

51

PF0(HS)/SCL

52

PF1(HS)/SDA

53

PF2/AIN0

54

PF3/AIN1

55
56
57
58

VDD2

59

VDDA

60

VSSA

61

VSS2

62

OSCIN

63

OSCOUT

64

U2

GND

GND

1

3

4

2

USB_D-

USB_D+

VDDF

USB_VCC

USB_GND

Sh15Sh2

C10

C10

GND

VDD_DB

GNDA2VDD_DB

GND

VDD_DB

A0

A1

SW4SW KEY-SPDTSW4SW KEY-SPDT

SW3SW KEY-SPDTSW3SW KEY-SPDT

SW2SW KEY-SPDTSW2SW KEY-SPDT

R15

10k

R15

10k

VDDF

C13

100nF

C13

100nF

R18 10kR18 10k

#IRQ

SCL

6

8

7

IRQ

VCC

XI1VBAT3VSS

XO

U3 M41T81S_8PU3 M41T81S_8P

2

32.76kHz

32.76kHz

NAND_FLASH

IRQ_LED

IRQ2_LED

47

PE3/PWM0/AIN7/DTC

PF4(HS)/USBEN
PF5(HS)/ICCCLK

PF6(HS)/ICCDATA

XT2

XT2

R17

10k

R17

10k

VCC

R31

10k

R31

10k

R16

10k

R16

10k

LCD_A0E2E1

SEL0

SEL1

SEL2

SEL3

SEL4

NAND_CE1

44

PE0(HS)/AIN4/DTC45PE1(HS)/AIN5/DTC46PE2(HS)/AIN6/DTC

#IRQ1

#IRQ2

#STBY

34

40

42

PC635PC736PD037PD138PD239PD3

PD6/AIN243PD7/AIN3

PD4/OCMP141PD5/OCMP2

ST72F651AR6T1U2ST72F651AR6T1

USBVss1USBDM2USBDP3USBVCC4USBVdd

100nF

100nF

5

VCC

R14

R14

Vddf6Vssf7DTC/PE5(HS)8DTC/PE6(HS)9DTC/PE7(HS)10DTC/PB011DTC/PB112DTC/PB2

GND

ALERT_LED

IRQ1_LED

C12

100nF

C12

100nF

C11

C11

100nF

100nF

C14

C14

1.5k

1.5k

D1D2D3D4D5

D0

100nF

100nF

DTC/PB314DTC/PB415DTC/PB5

13

GND

ADDRESS LINES

R19 10kR19 10k

SDA

2

1

5

SCL

SDA

4

BT1

BT1

#ALERT

33

PC5

PC4

16

J2B2S J2B2S

RTC

BATTERY

BATTERY

VSS1
VDD1
SCK/DTC/(HS)PC3
MOSI/DTC/(HS)PC2
MISO/DTC/(HS)PC1
SS/MCO/(HS)PC0
DTC/PA7
DTC/PA6
DTC/PA5
DTC/PA4
DTC/PA3
DTC/PA2
DTC/PA1
DTC/PA0
DTC/PB7
DTC/PB6

#IRQ2

#IRQ1

#IRQ

123 4

567 8

SCL_D

SDA_D

VDD_D

VCC

J4

1 2

VDD_D

GND

J3

1 2

SDA_D

32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17

#ALERT_D

#CS_D

J5

CON12AJ5CON12A

9 10

11 12

JUMPER

CLK_D GND

MISO_D

MOSI_D

#IRQ1GND

#CS_D

CLK_D

MOSI_D

MISO_D

10

20

9

AIN7

SEL1

9 10

SEL4

100nF

100nF

11 12

131415 16

17 18

DxN1

DxP1

#STBY_D

SEL2

VCCVDD_DB

11 12

131415 16

171819

SEL3

CON20APJ4CON20AP

19

FEMALE_CON.

20

CON20APJ3CON20AP

SDA_D SDA

MISO_D MISO

CLK CLK_D

SCL SCL_D

#STBY #STBY_D

#ALERT_D #ALERT

J6 Adaptor JackJ6 Adaptor Jack

U5 L78M05CV_TO_220U5 L78M05CV_TO_220

D6PWR_USB D6PW R_USB

SW5

SW5

330

330

R20

R20

GND USB+5V

MOSI_D MOSI

D7 STPS1L30AD7 STPS1L30A

VCC

7 8

345 6

A1

A2

A0

SEL0

5 6

7 8

3 4

SCL_D

#ALERT_D

#IRQ2

C15

C15

GND
VCC
CLK
MOSI
MISO
#CS
#WP
#IRQ

R/#B
#RE
ALE
#WE
CLE
D7
D6

DxN1

D1

RST_LCD

E2

GND

678

J8

9 10

123 4

5

E1

VCC

D0

GND LCD_A0

R21

10k

R21

10k

C25

C25

1uF-16V

1uF-16V

C17

C17

100nF

100nF

SDA

VCC

20

19

VCC

VL1I/0VL12I/OVCC23I/OVL34I/OVCC45I/OVL56I/OVCC67I/OVL78I/OVCC8

U6

VDD_DB

C16

C16

100nF

100nF

#CS #CS_D

GND

SDA_D

R22

10k

R22

10k

8V to 20V

2

3

1

100uF-40V

100uF-40V

C21

C21

C20

C20

.33uF

.33uF

1

Vin

GND

3

Vout

2

C19

100nF

C19

100nF

100uF-10V

100uF-10V

R24

330

R24

330

C18

C18

D8

PWR_EXTD8PWR_EXT

SW KEY-SPDT

SW KEY-SPDT

MHOLE

MHOLE

MHOLE

MHOLE

J43

J43

MHOLE

MHOLE

1

LCD_MHOLE

LCD_MHOLE

J44

J44

MHOLE

MHOLE

1

LCD_MHOLE

LCD_MHOLE

R26

R26

10k

10k

#RESET

ICCCLK

VPP/ICCSEL

789 10

345 6

ICC_CON

VDD_DB

4.7k

4.7k

ST2378ETTRU6ST2378ETTR

VOLTAGE TRANSLATOR

R30

200

R30

200

R29

100

R29

100

R2856R28

56

POWER_SUPPLY

LD29080U7LD29080

VDD_DB

VCC

2

1

J16J16

Doc ID 15482 Rev 1 33/39

AM03565v1

Schematic and bill of material UM0690

www.BDTIC.com/ST

A.2 Bill of material

Table 6. BOM

Manufacturer

Ref.

designator

Component

description

Package Manuf.

’s ordering

code /

orderable

part number

Supplier

Supplier
ordering

code

Comment

U1 NAND FLASH TSOP48 Numonyx

U2 Microcontroller TQFP64 ST

NAND512W3

A2BN6E

ST72F651AR

6T1E

U3 RTC SO8 ST M41T81SM6E

U5

U6

U7

Voltage

regulator

Voltage

translator

Voltage

regulator

TO-220 ST L7805CV

TSSOP20 ST ST2378ETTR

PPAK ST LD29080PT

Q3 PMOS SOT-223 ST STN5PF02V

D7 Schottky diode SMA ST STPS1L30A

Q1 npn transistor

Through

hole

Any 2N3906

Farnell 1224401

Not

mounted

STN5PF02

is in

MAT50

status. We

can

replace it

with

STN3PF06

XT1 Crysal 12 MHz

XT2 32.768 kHz

RESET Push button

J1

J2,J3

J5

USB

connector

Daughter card

connector

SIP-10 (berg

strip)

J6 Adapter Jack

Through

hole

Through

hole

Push

button

Through

hole

Through

hole

Any

Any

Any

Any

Sametec

2 x SIP6 Any

Through

hole

Any

J7 Header 5X2 IDC-10B Any

34/39 Doc ID 15482 Rev 1

TFC110X1-L-

D

Integrated

Electronics

TFC110X1-

L-D

UM0690 Schematic and bill of material

www.BDTIC.com/ST

Table 6. BOM (continued)

Manufacturer

Ref.

designator

Component

description

Package Manuf.

’s ordering

code /

orderable

part number

Supplier

Supplier
ordering

code

Comment

J8

D2,D3,D4,

D6

LCD

Connector

Red LED

D1,D8 Green LED

D5 Blue LED

C1

Capacitor(elec

trolytic)/4.7 µF

SIP-16

(berg
strip)

L E D -

3 mm

L E D -

3 mm

L E D -

3 mm

SMD Any

C2,C3,C4,

C5,

C8,C10,

C111,

C12,C13,

100 nF SMD0805 Any

C14,C15,
C16,C17,

C19

C6

Electrolytic

(10 µF/10 V)

SMD Any

C7,C9 33 pF SMD0805 Any

Any

Any

Any

C18

Electrolytic

(100 µF/ 10 V)

SMD Any

C20 0.33 µF SMD0805 Any

C21 100 µF/40 V SMD Any

C23 10 µF SMD Any

C24 10 µF/50 V SMD Any

R1,R3,R4,

R5,R25

4.7 kΩ SMD0805 Any

R2,R6,R8,

R12,R13,

330 Ω SMD0805 Any

R20,R24

R7 1 MΩ SMD0805 Any

R9 0 Ω SMD0805 Any

R10,R11 100 Ω SMD0805 Any

R14 1.5 kΩ SMD0805 Any

Doc ID 15482 Rev 1 35/39

Schematic and bill of material UM0690

www.BDTIC.com/ST

Table 6. BOM (continued)

Manufacturer

Ref.

designator

Component

description

Package Manuf.

’s ordering

code /

orderable

Supplier

part number

R15,R16,
R17,R18,
R19,R21,

10 kΩ SMD0805 Any

R22,R23,

R26,R31

R27,R29 100 Ω SMD0805 Any

R28 200 Ω SMD0805 Any

R30 56 Ω SMD0805 Any

R32 100 kΩ SMD0805 Any

LCD Graphical LCD Techstar TS12232C Techstar TS12232C

SW2,SW3,

SW4

DP3T switches

SW5 SPDT switch

Through

hole

Through

hole

ALPS 1123868 Farnell STSSS2121

EAO 674345 Farnell

Supplier
ordering

code

09-03290-

01

Comment

Battery

BT1

connector +

battery (3 V)

Through

hole

Any

36/39 Doc ID 15482 Rev 1

UM0690 Abbreviations

www.BDTIC.com/ST

Appendix B Abbreviations

Table 7. Abbreviations

Abbreviation Term

GUI Graphical user interface

LCD Liquid crystal display

USB Universal serial bus

RTC Real time clock

°C Degree centigrade

EEPROM

Kb 1024

Electrically erasable programmable read only

memory

Doc ID 15482 Rev 1 37/39

Revision history UM0690

www.BDTIC.com/ST

Revision history

Table 8. Document revision history

Date Revision Changes

09-Jun-2010 1 Initial release.

38/39 Doc ID 15482 Rev 1

UM0690

www.BDTIC.com/ST

Please Read Carefully:

Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
time, without notice.

All ST products are sold pursuant to ST’s terms and conditions of sale.

Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST as sumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described herein.

No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained therein.

UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.

UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT
RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING
APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY,
DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE
GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK.

Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any
liability of ST.

ST and the ST logo are trademarks or registered trademarks of ST in various countries.

Information in this document supersedes and replaces all information previously supplied.

The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.

© 2010 STMicroelectronics - All rights reserved

STMicroelectronics group of companies

Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -

Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America

www.st.com

Doc ID 15482 Rev 1 39/39