STMicroelectronics STM32L152D-EVAL User manual

March 2012 Doc ID 022868 Rev 1 1/56
UM1521
User manual
STM32L152D-EVAL
evaluation board
Introduction
The STM32L152D-EVAL evaluation board is a complete demonstration and development
platform for STMicroelectronic's ARM cortex-M3 core-based STM32L152ZDT6
microcontroller featuring two I2C, three SPI, five USART, 12-bit ADC, 12-bit DAC, LCD
driver, internal 48 KB SRAM and 384 KB Flash, touch sensing, USB FS, LCD controller,
FSMC and JTAG debugging support.
This board can be used as reference design for user application development but it is not
considered as final application. The full range of hardware features on the board helps you
evaluate all peripherals (USB FS, USART, audio DAC, microphone ADC, dot-matrix LCD,
LCD glass, IrDA, LDR, SRAM, NOR Flash, MicroSD Card, temperature sensor and so on)
and develop your own applications. Extension headers make it possible to easily connect a
daughterboard or wrapping board for your specific application.
An ST-LINK/V2 is integrated on the board as embedded in-circuit debugger and
programmer for the STM32 MCU.
Figure 1. STM32L152D-EVAL evaluation board
www.st.com
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Contents UM1521
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Contents
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Demonstration software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Delivery recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Hardware layout and configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Development and debug support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3 Clock source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.4 Reset source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.5 Boot option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.6 LCD glass module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.7 Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.8 USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.9 RS-232 and IrDA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.10 Touch sensing slider . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.11 MicroSD Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.12 Serial EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.13 RF EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.14 SRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.15 NOR Flash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.16 Analog input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.17 Comparator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.18 Temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.19 Display and input devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.20 IDD measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.20.1 Run mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.20.2 Low power mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.20.3 Ibias current measurement procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
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3.1 RS-232 connector CN1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.2 Power connector CN2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.3 TFT LCD connector CN4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.4 Daughterboard extension connector CN5 and CN10 . . . . . . . . . . . . . . . . 27
3.5 LCD glass daughterboard connectors CN6 and CN7 . . . . . . . . . . . . . . . 30
3.6 ST-LINK/V2 programming connector CN9 . . . . . . . . . . . . . . . . . . . . . . . . 31
3.7 ST-LINK/V2 USB type B connector CN14 . . . . . . . . . . . . . . . . . . . . . . . . 31
3.8 JTAG connector CN16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.9 Trace debugging connector CN11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.10 Audio jack CN13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.11 MicroSD connector CN3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.12 Analog input-output 2-pin connector CN8 . . . . . . . . . . . . . . . . . . . . . . . . 33
3.13 User USB type B connector CN15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.14 RF EEPROM daughterboard connector CN12 . . . . . . . . . . . . . . . . . . . . . 34
4 Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Appendix A STM32L152D-EVAL I/O assignment . . . . . . . . . . . . . . . . . . . . . . . . . 49
Appendix B Mechanical dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
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Overview UM1521
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1 Overview
1.1 Features
●Four 5 V power supply options: Power jack, ST-LINK/V2 USB connector, user USB
connector or daughterboard
●Audio jack connected to I2S DAC, or STM32L152ZDT6 internal DAC
●Microphone connected to ADC using integrated op amp as amplifier
●2 GByte (or more) MicroSD Card on SDIO interface
●Temperature sensor and RF EEPROM on I2C compatible serial interface
●RS-232 interface configurable for communication or Flashloader
●IrDA transceiver
●JTAG and trace debug support, embedded ST-LINK/V2
●4 Kbit serial Flash, 512K x16-bit SRAM and 128 Mbit NOR Flash
●240x320 TFT color LCD connected to FSMC interface of STM32L152ZDT6
●Joystick with 4-direction control and selector
●Reset and Tamper or key button
●4 color user LEDs and 3 LEDs as MCU power range indicator
●MCU consumption measurement circuit
●LCD glass 40 x 8 segments connected to LCD driver of STM32L152ZDT6
●Extension connector for daughterboard or wrapping board
●MCU voltage choice of 3.3 V or adjustable from 1.65 V to 3.6 V
●USB FS connector
●Touch slider
●Light dependent resistor (LDR)
●One MCU integrated op amp configured as Sallen-Key 2nd order low pass filter
●One MCU integrated op amp configured as amplifier with adjustable gain
●One ADC / DAC input signal connector
●Potentiometer
1.2 Demonstration software
Demonstration software is preloaded in the board's Flash memory for easy demonstration of
the device peripherals in stand-alone mode. For more information and to download the
latest version available, please refer to the STM32L152D-EVAL demonstration software
available on www.st.com.
1.3 Order code
To order the STM32L152ZDT6 evaluation board, use the order code STM32L152D-EVAL.
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1.4 Delivery recommendations
Some verifications are needed before using the board for the first time to make sure that
nothing was damaged during shipment and that no components are unplugged or lost.
When the board is extracted from its plastic bag, please check that no component remains
in the bag.
The main components to verify are:
1. The 8 MHz crystal (X1) which may have been removed by a shock from its socket.
2. The MicroSD Card which may have been ejected from the connector CN3 (left side of
the board).
3. The dual-interface EEPROM board (ANT7-M24LR-A) which may have been unplugged
from the connector CN12 (top right corner of the board).
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Hardware layout and configuration UM1521
6/56 Doc ID 022868 Rev 1
2 Hardware layout and configuration
The STM32L152D-EVAL evaluation board is designed around the STM32L152ZDT6 (144-
pin TQFP package). The hardware block diagram Figure 2 illustrates the connection
between STM32L152D-EVAL and peripherals (LCD glass, Color LCD, Touch slider, USB FS
connector, Temperature Sensor, USART, IrDA, Audio, SRAM, Nor Flash, EEPROM,RF
EEPROM, MicroSD Card and embedded ST-LINK) and Figure 3 will help you locate these
features on the actual evaluation board.
Figure 2. Hardware block diagram
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Doc ID 022868 Rev 1 7/56
Figure 3. Hardware block diagram
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Hardware layout and configuration UM1521
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2.1 Development and debug support
Version 2 of the ST-LINK called ST-LINK/V2 is embedded on the board. This tool allows
program loading and debugging on the STM32L using a JTAG or SWD interface. Third-party
debug tools are also supported by JTAG connector CN16 and Trace connector CN11.
A specific driver must be installed on your PC for communication with embedded ST-
LINK/V2. To download and install this driver, use the install shield called ST-
LINK_V2_USBdriver.exe available on the Software and development tools page for ultra low
power STM32L family available on www.st.com.
Third-party toolchains support ST-LINK/V2 according to Ta b l e 1 .
The embedded ST-LINK/V2 is connected to the PC via a standard USB cable connected to
connector CN14. The bicolor LED LD5 (COM) advises on the communication status as
follows:
●Slow blinking Red LED/Off : At power on before USB initialization.
●Fast blinking Red LED/Off : After the first correct communication between PC and ST-
LINK/V2 (enumeration).
●Red LED On: When initialisation between PC and ST-LINK/V2 is successfully finished.
●Green LED On: After successful target communication initialization.
●Blinking Red/Green LED: During communication with target.
●Red LED On: Communication finished and OK.
●Orange LED On: Communication failure.
Note: It is possible to power the board via CN14 (embedded ST/LINK/V2 USB connector) even if
an external tool is connected to CN11 (Trace connector) or CN16 (external JTAG & SWD
connector).
Table 1. Third party support of ST-LINK/V2
Third party Toolchain Version
Atollic TrueSTUDIO 2.1
IAR EWARM 6.20.4
Keil MDK-ARM 4.20
Tasking VX-Toolset ARM Cortex-M 4.0.1
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2.2 Power supply
The STM32L152D-EVAL evaluation board is designed to be powered by a 5 V DC power
supply and to be protected by PolyZen from a wrong power plug-in event.
It is possible to configure the evaluation board to use any of following four sources for the
power supply.
●5 V DC power adapter connected to CN2, the power jack on the board (power supply
unit (PSU) on silk screen). The external power supply is not provided with the board.
●5 V DC power with 500mA limitation from CN14, the USB type B connector of ST-
LINK/V2 (USB 5 V power source on silkscreen (ST-LINK/V2)).
●5 V DC power with 500mA limitation from CN15, the USB type B connector (USB 5V
power source on silkscreen (USB)).
●5 V DC power from CN10, the extension connector for daughterboard (daughterboard
power source on silkscreen (D5V)).
The LEDs indicate the following:
●LED LD9 is lit when the STM32L152D-EVAL board is powered by 5 V correctly.
●Red LED LD8 is lit when the MCU is powered by low voltage (VDD < 1.8 V).
●Yellow LED LD7 is lit when the MCU is powered by voltage (1.8 V < VDD < 2.2 V).
●Green LED LD6 is lit when the MCU is powered by voltage (2.2 V < VDD).
The power supply is configured by setting the related jumpers JP1, JP5 and JP10 as
described in Ta b le 2 .
Table 2. Power supply jumper settings
Jumper Description Setting
JP1
JP1 selects one of the four possible power supply sources.
– For power supply jack(CN2) to the STM32L152D-EVAL only, JP1 is set
as shown to the right:
STK
U5V D5V
PSU
– For power supply from the daughterboard connectors (CN10) to
STM32L152D-EVAL only, JP1 is set as shown to the right:
– For power supply from USB (CN15) to STM32L152D-EVAL only, JP1
is set as shown to the right:
– For power supply from USB connector of ST-LINK/V2 (CN14) to
STM32L152D-EVAL only, JP1 is set as shown to the right:
(Default setting)
For power supply from power supply jack (CN2) to both STM32L152D-
EVAL and daughterboard connected on CN5 and CN10, JP1 is set as
shown to the right (daughterboard must not have its own power supply
connected)
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Hardware layout and configuration UM1521
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Note: Due to some peripheral component specifications, the low voltage limitations (component
will not work correctly when power level is under low voltage limitation) related to the
operating voltage of the peripherals are shown in Ta bl e 3 .
Note: The recommended AC220 V to DC5 V power adapter is the PSU-5V2A. It is not included
with the board but can be ordered from ST as a separate item. You can also use another
equivalent 5 V power adapter (polarity compatible with CN2) to power the STM32L152D-
EVAL board via the CN2 power jack on the board.
To order the recommended power supply, use the order code PSU-5V2A.
JP5
VDD is connected to fixed +3.3 V DC power when JP5 is set as shown to
the right: (Default setting)
VDD is connected to adjustable DC power from 1.65 V to 3.6 V when
JP5 is set as shown to the right:
JP10
VDD power is directly connected to MCU VDD when JP10 is set as
shown to the right (Default setting):
Note: For manual IDD measurement the jumper on JP10 must be
removed and replaced by an ampermeter connected between pin 1 and
2 of JP10.
Connect VDD power to MCU with current-sampling resister, 1 Ohm or
1 KOhm, in series for IDD current measurement when JP10 is set as
shown to the right:
Table 2. Power supply jumper settings (continued)
Jumper Description Setting
Table 3. Low voltage limitation
Peripheral Component I/O name Low voltage limitation
USB CN15 USB 3 V
MicroSD Card CN3 SDIO 2.7 V
SRAM U5 FSMC 2.4 V
EEPROM U25 SPI 1.8 V
RF EEPROM CN12 I2C 1.8 V
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2.3 Clock source
Two clock sources are available on the STM32L152D-EVAL evaluation board for the
STM32L152ZDT6 and RTC embedded.
●X1, 8 MHz crystal with socket for the STM32L152ZDT6 microcontroller, it can be
removed from socket when internal RC clock is used.
●X3, 32 KHz crystal for embedded RTC
2.4 Reset source
The reset signal of the STM32L152D-EVAL evaluation board is low active and the reset
sources include:
●Reset button B1
●Debug tools from JTAG connector CN16 and trace connector CN11
●Daughterboard from CN10
●Embedded ST-LINK/V2
●RS-232 connector CN1 for ISP
Table 4. 8 MHz crystal X1 related solder bridges
Solder bridge Description
SB1
PH1 is connected to 8 MHz crystal when SB1 is open. (Default setting)
PH1 is connected to extension connector CN10 when SB1 is closed. In such case
R51 must be removed to avoid disturbance due to the 8Mhz quartz
SB2
PH0 is connected to 8 MHz crystal when SB2 is open. (Default setting)
PH0 is connected to extension connector CN10 when SB2 is closed. In such case
C53 and X1 must be removed.
Table 5. 32 KHz crystal X3 related solder bridges
Solder bridge Description
SB8
PC14 is connected to 32 KHz crystal when SB8 is open. (Default setting)
PC14 is connected to extension connector CN5 when SB8 is closed. In such case
R85 must be removed to avoid disturbance due to the 32Khz quartz
SB7
PC15 is connected to 32 KHz crystal when SB7 is open. (Default setting)
PC15 is connected to extension connector CN5 when SB7 is closed. In such case
R84 must be removed to avoid disturbance due to the 32 KHz quartz
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Hardware layout and configuration UM1521
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2.5 Boot option
The STM32L152D-EVAL evaluation board is able to boot from:
●Embedded user Flash
●System memory with boot loader for ISP
●Embedded SRAM for debugging
The boot option is configured by setting switch SW1 (BOOT0) and SW2 (BOOT1). The
BOOT0 can be configured also via the RS-232 connector CN1.
Table 6. Boot related switch
Switch Boot from Switch
configuration
SW1
and
SW2
STM32L152D-EVAL boots from user Flash when SW1 is set as
shown to the right. SW2 is don't care in this configuration.
(Default setting)
0 <----> 1
STM32L152D-EVAL boots from embedded SRAM when SW1 and
SW2 are set as shown to the right.
0 <----> 1
STM32L152D-EVAL boots from system memory when SW1 and
SW2 are set as shown to the right.
0 <----> 1
Table 7. Boot0 related jumpers
Jumper Description
JP11
The Bootloader_BOOT0 is managed by pin 6 of connector CN1 (RS-232 DSR signal)
when JP11 is closed. This configuration is used for boot loader application only.
Default setting: Not fitted
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2.6 LCD glass module
An LCD glass module daughterboard (MB979) is mounted on the STM32L152D-EVAL
evaluation board. It can be connected to the LCD driver of the STM32L152ZDT6 or work as
a set of jumpers by mounting it on two possible positions; position "IO" or position "LCD":
●When the LCD glass module is mounted on position IO (see Figure 4), all peripherals
(memories, USART, audio, EEPROM, potentiometer, MicroSD Card, microphone, etc)
shared with the LCD glass are connected to the STM32L152ZDT6, and the LCD glass
is disconnected (default setting).
●When the LCD glass module is mounted on position LCD (see Figure 5), the LCD glass
is connected to the LCD driver of the STM32L152ZDT6 and all peripherals shared with
LCD glass are disconnected.
Figure 4. Position IO
Figure 5. Position LCD
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Hardware layout and configuration UM1521
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The custom LCD glass on MB979 is model XHO5002B. The signal mapping is shown in
Ta bl e 9 , Table 1 0 , Ta bl e 1 1 and Table 1 2 and segment names are given in Figure 6.
Table 8. LCD glass related jumpers
Jumper Description Setting
JP8
PA1 is connected to microphone ( MIC_INP signal) when JP8 is set as shown to
the right: (Default setting)
PA1 is connected to LCD glass as SEG0 when JP8 is set as shown to the right:
JP6
PA2 is connected to microphone (MIC_INN signal)when JP6 is set as shown to
the right: (Default setting)
PA2 is connected to LCD glass as SEG1 when JP6 is set as shown to the right:
Table 9. LCD glass segments mapping table pins 1-12
Pin1 2 3 456789101112
COM1 COM1 1g 2g 3g 4g 5g 6g 7g 8g
COM2 COM2 1h 2h 3h 4h 5h 6h 7h 8h
COM3 COM3 1i 2i 3i 4i 5i 6i 7i 8i
COM4 COM4 1j 2j 3j 4j 5j 6j 7j 8j
COM5 1d 2d 3d 4d 5d 6d 7d 8d
COM6 1c 2c 3c 4c 5c 6c 7c 8c
COM7 1e 2e 3e 4e 5e 6e 7e 8e
COM8 1f 2f 3f 4f 5f 6f 7f 8f
Table 10. LCD glass segments mapping table pins 13-24
Pin131415161718192021222324
COM1 9g 10g 11g 12g 13g 14g 15g 16g 17g 18g 19g 5J
COM2 9h 10h 11h 12h 13h 14h 15h 16h 17h 18h 19h 5C
COM3 9i 10i 11i 12i 13i 14i 15i 16i 17i 18i 19i 5B
COM4 9j 10j 11j 12j 13j 14j 15j 16j 17j 18j 19j 5I
COM5 9d 10d 11d 12d 13d 14d 15d 16d 17d 18d 19d 13a
COM6 9c 10c 11c 12c 13c 14c 15c 16c 17c 18c 19c 13b
COM7 9e 10e 11e 12e 13e 14e 15e 16e 17e 18e 19e O1
COM8 9f 10f 11f 12f 13f 14f 15f 16f 17f 18f 19f O2
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UM1521 Hardware layout and configuration
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Table 11. LCD glass segments mapping table pins 25-36
Pin252627282930313233343536
COM1 7J 7N 7E 6J 6N 6E 5N 5E 4J 4N 4E 3J
COM2 7C 7M P6 6C 6M P5 5M P4 4C 4M P3 3C
COM3 7B 7H 7F 6B 6H 6F 5H 5F 4B 4H 4F 3B
COM4 7I 7A 7G 6I 6A 6G 5A 5G 4I 4A 4G 3I
COM5 19a 18a 17a 16a 15a 14a 12a 11a 10a 9a 8a 7a
COM6 19b 18b 17b 16b 15b 14b 12b 11b 10b 9b 8b 7b
COM7S 7DQ6O46DQ55DQ4µA4DQ3C4
COM8 nA 7K 7L O3 6K 6L 5K 5L mA 4K 4L C3
Table 12. LCD glass segments mapping table pins 37-48
Pin373839404142434445 46 47 48
COM1 3N 3E 2J 2N 2E 1J 1N 1E
COM2 3M P2 2C 2M P1 1C 1M +
COM3 3H 3F 2B 2H 2F 1B 1H 1F
COM4 3A 3G 2I 2A 2G 1I 1A 1G
COM5 6a 5a 4a 3a 2a 1a S3 S1 COM5
COM6 6b 5b 4b 3b 2b 1b S4 S2 COM6
COM7 3D Q2 C1 2D Q1 S5 1D - COM7
COM8 3K 3L C2 2K 2L S6 1K 1L COM8
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Hardware layout and configuration UM1521
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Figure 6. LCD segment names
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2.7 Audio
The STM32L152D-EVAL evaluation board supports stereo audio play by using an audio
DAC CS43L22 connected to both I2S2 port and one channel of DAC in the microcontroller
STM32L152ZDT6.
●OpAmp3 of the STM32L152ZDT6 acts as a low pass filter of audio output for this DAC.
●A headphone jack is connected to the output of CS43L22.
●A microphone is connected to ADC through OpAmp1 of STM32L152ZDT6.
The I2C address of CS43L22 is 0b1001010.
The LCD glass module has to be mounted on "IO" position for Audio I2C usage. Refer to
Section 2.6: LCD glass module for detail.
2.8 USB
The STM32L152D-EVAL evaluation board supports USB2.0 compliant full speed
communication via a USB type B connector (CN15). The evaluation board can be powered
by this USB connection at 5 V DC with a 500 mA current limitation.
USB disconnection simulation can be implemented by controlling the internal 1.5 K pull-up
resistor on USB+ line and detection of 5 V power on USB connector CN15 by using a
resistor bridge connected to PE6.
USB will work properly when VDD > 3 V.
2.9 RS-232 and IrDA
RS-232 and IrDA communication is supported by D-type 9-pin RS-232 connector CN1, and
IrDA transceiver U2 which is connected to USART1 of the STM32L152ZDT6 on the
STM32L152D-EVAL evaluation board.
The signals Bootloader_RESET and Bootloader_BOOT0 can be added on RS-232
connector CN1 for ISP support. If Bootloader_RESET signal is used, mount R39 (Default:
Unmounted) with a 0 Ohm resistor as Figure 7 shows.
Table 13. Audio related jumpers
Jumper Description Setting
JP7
PA4 is connected to analog input signal for ADC or output signal from DAC on
CN8 when JP7 is set as shown to the right:
PA4 output signal to OpAmp3 as low pass filter when JP7 is set as shown to the
right: (Default setting)
JP8 Description of JP8 is in Section 2.6: LCD glass module
JP6 Description of JP6 is in Section 2.6: LCD glass module
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Figure 7. R39 resistor placement
Note: If Bootloader_RESET signal is not used, remove R39 to avoid disturbance due to CTS
signal from pin8 of CN1, which could cause MCU reset with some software.
The LCD glass module has to be mounted on IO position for USART1 usage. Refer to
Section 2.6: LCD glass module for detail.
Table 14. RS-232 & IrDA related jumpers
Jumper Description Setting
JP4
USART1_RX is connected to RS-232 transceiver and RS-232 communication is
enabled when JP4 is set as shown to the right(Default setting):
USART1_RX is connected to IrDA transceiver and IrDA communication is
enabled when JP4 is set as shown to the right:
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2.10 Touch sensing slider
The STM32L152D-EVAL evaluation board supports a touch sensing slider based on either
RC charging or charge transfer technology. The charge transfer technology is enabled by
default assembly.
PB6 and PB7 manage an active shield reducing sensitivity to other signals. The active
shield is placed on an internal layer immediately under the slider (layer 2) to cover
components related to the slider and the slider itself.
Note: The slider is optimized when the board is powered at 3.3 V. It may be necessary to adjust
the capacitor value of C54 (47nF COG) and the firmware to adapt them to a low voltage.
2.11 MicroSD Card
The 2 GB (or more) MicroSD Card connected to the SDIO port of the STM32L152ZDT6 is
available on the board. MicroSD Card detection is managed by standard I/O port PC7.
The MicroSD Card will work properly when VDD > 2.7 V.
The LCD glass module has to be mounted on IO position for MicroSD Card usage. Refer to
Section 2.6: LCD glass module for detail.
Table 15. Touch sensing slider related solder bridges
Solder bridge Description
SB3
PF9 is connected to sampling capacitor when SB3 is open. (Default setting)
PF9 is connected to extension connector CN10 when SB3 is closed. In this case
C54 must be removed to avoid disturbance due to the capacitor
SB4
PF8 is connected to touch slider when SB4 is open. (Default setting)
PF8 is connected to extension connector CN10 when SB4 is closed. In this case
R69 must be removed to avoid disturbance due to the touch slider
SB5
PF7 is connected to touch slider when SB5 is open. (Default setting)
PF7 is connected to extension connector CN10 when SB5 is closed. In this case
R73 must be removed to avoid disturbance due to the touch slider
SB6
PF6 is connected to touch slider when SB6 is open. (Default setting)
PF6 is connected to extension connector CN10 when SB6 is closed. In this case
R77 must be removed to avoid disturbance due to the touch slider
SB10
PB6 is connected to touch slider when SB10 is open. (Default setting)
PB6 is connected to extension connector CN10 when SB10 is closed. In this case
R92 must be removed to avoid disturbance due to the shield
SB11
PB7 is connected to touch slider when SB11 is open. (Default setting)
PB7 is connected to extension connector CN10 when SB11 is closed. In this case
R101 must be removed to avoid disturbance due to the capacitor
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2.12 Serial EEPROM
A 4 Kbit (M95040-R) serial EEPROM is connected to SPI1 of the STM32L152ZDT6.
Serial Flash chip select is managed by I/O pin PB0.
The EEPROM will work properly when VDD > 1.8 V.
The LCD glass module has to be mounted on IO position for SPI EEPROM usage. Refer to
Section 2.6: LCD glass module for detail.
2.13 RF EEPROM
The RF EEPROM daughterboard (MB1020) implemented on the module is the M24LR64-R.
This EEPROM can be accessed by the MCU via the I2C bus or by RF using a 13.56 MHz
reader (for instance CR95HF).
The daughterboard can be connected to the STM32L152ZDT6 via the I2C bus on CN2.
The I2C address of RF EEPROM is 0b1010E2E1E0. E0-E2 values are determined by the
RF EEPROM daughterboard.
The RF EEPROM will work properly when VDD > 1.8 V.
The LCD glass module has to be mounted on IO position for RF EEPROM usage. Refer to
Section 2.6: LCD glass module for detail.
2.14 SRAM
512Kx16-bit SRAM is connected to bank2 of the FSMC interface and both 8-bit and 16-bit
accesses are allowed by BLN0 and BLN1 connected to BLE and BHE of SRAM respectively.
The SRAM will work properly when VDD > 2.4 V.
The LCD glass module has to be mounted on IO position for SRAM usage. Refer to
Section 2.6: LCD glass module for detail.
2.15 NOR Flash
128 Mbit NOR Flash is connected to bank1 of the FSMC interface. The 16-bit operation
mode is selected by pull-up resister connected to BYTE pin of NOR Flash. Write protection
is enabled or disabled by jumper JP9.
The LCD glass module has to be mounted on IO position for NOR Flash usage. Refer to
Section 2.6: LCD glass module for detail.
Table 16. NOR Flash related jumpers
Jumper Description
JP9
Write protection is enabled when JP9 is fitted while write protection is disabled when JP9 is
not fitted.
Default setting: Not fitted
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