ST STM8/128-EVAL User manual

August 2008 Rev 2 1/41
41
UM0482
User manual
STM8/128-EVAL
evaluation board
Introduction
The STM8S2xx evaluation board STM8/128-
EVAL is designed as a complete development
platform for STMicroelectronic's STM8 core-
based STM8S2xx microcontroller with
CAN2.0A/B compliant interface, I2C, SPI, two
UART channels with smartcard, IrDA and LIN
support, internal 2 Kbyte data Flash and
128 Kbyte code Flash, SWIM debugging support.
The full range of hardware features on the board
is able to help you evaluate all peripherals
(including motor control, CAN, MicroSD card,
smartcard, UART, LIN, IrDA) and develop your
own applications. Extension headers make it
possible to easily connect a daughter board or
wrapping board for your specific application.
Features
■Two 5 V power supply options: power jack or
daughter board
■Audio play and record
■64 or 128 Mbyte MicroSD card
■Both A&B type smartcard support
■64 Kbit I2C EEPROM
■2 channels of RS-232 communication
■IrDA transceiver
■2 channels of LIN communication
■CAN2.0A/B compliant connection
■Inductor motor control connector
■SWIM and STice debug support
■122x32 dot-matrix serial interface LCD module
■Joystick with 4-direction control and selector
■Reset, Wakeup, Tamper and User button
■4 LEDs
■Extension connector for daughter board or
wrapping board.
Figure 1. STM8/128-EVAL evaluation board
www.st.com
Downloaded from Arrow.com.

Contents UM0482
2/41
Contents
1 Hardware layout and configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2 Clock source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Reset source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.4 Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.5 I2C EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.6 CAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.7 RS-232 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.8 LIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.9 Motor control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.10 Smartcard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.11 MicroSD card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.12 Analog input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.13 IrDA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.14 Development and debug support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.15 Display and input devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.1 STice connector CN2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2 Analog input connector CN3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.3 SWIM connectors CN4 and CN17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.4 Power connector CN6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.5 Audio jack CN7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.6 CAN D-type 9-pin male connector CN8 . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.7 MicroSD connector CN9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.8 Motor control connector CN10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.9 LIN connectors CN11 and CN14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.10 Smartcard connector CN12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.11 RS-232 connectors CN13 and CN15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.12 QST connector CN16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.13 Daughter board extension connectors CN1 and CN5 . . . . . . . . . . . . . . . 20
Downloaded from Arrow.com.

UM0482 Contents
3/41
3 Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Appendix A STM8/128-EVAL IO assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Downloaded from Arrow.com.

Hardware layout and configuration UM0482
4/41
1 Hardware layout and configuration
The STM8/128-EVAL evaluation board is designed around the STM8S2xx microcontroller in
an 80-pin TQFP package. The hardware block diagram Figure 2 illustrates the connection
between STM8S2xx and peripherals (LCD, I2C EEPROM, UART, IrDA, LIN, Audio, CAN
bus, smartcard, MicroSD card and motor control) and Figure 3 will help you locate these
features on the actual evaluation board.
Figure 2. Hardware block diagram
ADC2
UART1
UART3
ADC2
Downloaded from Arrow.com.

UM0482 Hardware layout and configuration
5/41
Figure 3. STM8/128-EVAL evaluation board top layout
1. RV1 is connected to AIN9 instead of AIN8 as mentioned on the silkscreen.
2. CN13 and CN15 correspond to UART1 and UART3, instead of USART1 and USART2, as mentioned on the silkscreen.
CN5, CN1
Extension header
CN3
BNC connector
CN10
Motor control
U14
IrDA
U1
STM8S2xx
CN8
CAN
CN13
USART1(2)
CN15
USART2(2)
CN6
5V power
CN11
LIN1
connector
CN14
LIN2
connector
CN4
SWIM
U13
Dot-matrix
LCD
CN16
QST
connector
CN7
Audio jack
B2
KEY
U9
Joystick
B1
RESET
CN9
MicroSD card
U8
MIC
RV1
Potentiometer(1)
R75
resistor
Downloaded from Arrow.com.

Hardware layout and configuration UM0482
6/41
Figure 4. STM8/128-EVAL evaluation board bottom layout
CN12 smartcard
Downloaded from Arrow.com.

UM0482 Hardware layout and configuration
7/41
1.1 Power supply
The STM8/128-EVAL evaluation board is designed to be powered by 5 V DC power supply
and to be protected by the PolyZen (auto rearmable fuse) U2 from wrong power plug-in
event. It is possible to configure the evaluation board to use any of following sources for the
power supply.
●5 V DC power adapter connected to CN6, the Power Jack on the board (PSU on silk
screen for power supply unit).
●5 V DC power from both CN5 and CN1, the extension connector for daughter board
(DTB for daughter board on silkscreen).
The power supply is configured by setting the related jumpers JP3 and JP2 as described in
Ta bl e 1 .
The LED LD5 is lit when the STM8/128-EVAL evaluation board is powered from the 5V
supply, and LD6 is also lit when the 3.3 V power regulator U3 is present.
1.2 Clock source
One clock source is available on the STM8/128-EVAL evaluation board for STM8S2xx:
●X1, 24 MHz crystal with socket for STM8S2xx microcontroller
It can be removed from the socket when the internal RC clock is used.
Table 1. Power related jumpers
Jumper Description
JP3
JP3 is used to select one of the two possible power supply resources.
For power supply jack(CN6) to the STM8/128-EVAL only, JP3 is set
as shown.
This is the default setting.
For power supply from the daughter board connectors (CN5 and
CN1) to STM8/128-EVAL only, JP3 is set as shown.
For power supply from power supply jack(CN6) to both
STM8/128-EVAL and daughter board connected on CN5 and CN1,
JP3 is set as shown (daughter board must have not its own
power supply connected).
JP2 Measures the consumption of both VDD and VDDA.
Default setting: Fitted
PSU DTB
PSU DTB
PSU DTB
Downloaded from Arrow.com.

Hardware layout and configuration UM0482
8/41
1.3 Reset source
The reset signal of STM8/128-EVAL evaluation board is low active and the reset sources
include:
●Reset button B1
●Debugging Tools from connector CN4
●Daughter board from CN5
The reset pin PA0 of STM8S2XX is connected either to Reset button B1 or to GND by
setting the jumper JP1 as described in Ta b le 2 .
1.4 Audio
The STM8/128-EVAL evaluation board supports both audio recording and playback. This
can be disabled or enabled by setting the jumpers JP4 and JP5. Audio volume can be
adjusted using the potentiometer RV2, while the microphone amplifier gain can be adjusted
using potentiometer RV3.
The beeper function pin PD4 is connected to the speaker via the JP14 jumper which can be
used to select the source, beeper or PWM output from STM8S2xx.
Table 2. Reset related jumpers
Jumper Description
JP1
PA0 is connected to GND when JP1 is set as shown. It is used to
maintain the reset pin at low level while STice is connected to the
board.
PA0 is connected to Reset button when JP1 is set as shown.
This is the default setting.
1 2 3
1 2 3
Table 3. Audio related jumpers
Jumper Description
JP4
The audio power amplifier TS4871 is forced into standby mode when JP4 is not
fitted.
Default setting: fitted
JP5
The microphone pre-amplifier MAX4061 is forced into shutdown mode when JP5 is
fitted.
Default setting: not fitted
JP14
Either beeper or PWM output can be selected as a source of
speaker by setting the jumper JP14. The beeper is connected to
speaker when JP14 is set as shown opposite.
The PWM output is connected to speaker when JP14 is set as
shown opposite.
This is the default setting.
1 2 3
1 2 3
Downloaded from Arrow.com.

UM0482 Hardware layout and configuration
9/41
1.5 I2C EEPROM
A 64Kbit I2C EEPROM is connected to the I2C port of STM8S2xx. Write protection can be
enabled by setting jumper JP8.
1.6 CAN
The STM8/128-EVAL evaluation board supports CAN2.0A/B compliant CAN bus
communication based on 5 V CAN transceiver. The High-speed mode and low-speed mode
are available and can be selected by setting JP6.
1.7 RS-232
Two D-type 9-pin connectors CN13 (UART1) and CN15 (UART3) are available on the
STM8/128-EVAL evaluation board. The USART1 connector is connected to channel 3 of the
multiplexer U17, while the USART2 connector is connected to channel 1 of the multiplexer
U18.
Note: UART1 and UART3 are named USART1 and USART2 on the silkscreen (refer to Figure 3).
1.8 LIN
Two D-type 9-pin LIN connectors CN11 (LIN1) and CN14 (LIN2) are available on the
STM8/128-EVAL evaluation board. The LIN1 connector is connected to channel 4 of the
multiplexer U17, while the LIN2 connector is connected to channel 0 of the multiplexer U18.
Either master or slave operation mode is supported by both LIN connectors and can be
Table 4. I2C EEPROM related jumper
Jumper Description
JP8 I2C EEPROM U12 is protected from write operations when JP8 is not fitted.
Default setting: fitted
Table 5. CAN related jumpers
Jumper Description
JP6
CAN transceiver operates in low-speed mode when JP6 is set as
shown:
CAN transceiver operates in high-speed mode when JP6 is set as
shown:
This is the default setting.
JP7 CAN terminal resistor is enabled when JP7 is fitted.
Default setting: not fitted.
1 2 3
1 2 3
Downloaded from Arrow.com.

Hardware layout and configuration UM0482
10/41
selected by setting jumpers JP11 and JP12. The LIN1 and LIN2 transceivers are powered
by an external voltage from 6V to 26V connected to pin 9 of the LIN DB9 connector.
1.9 Motor control
The STM8/128-EVAL evaluation board supports inductor motor control via a 34-pin
connector CN10, which provides all required control and feedback signals to and from the
motor power-driving board. Available signals on this connector include emergency stop,
motor speed, 3-phase motor current, bus voltage, heatsink temperature coming from the
motor driving board and 6 channels of PWM control signals going to the motor driving
circuit.
Either PFC_PWM or Dissipative_Brake signal can be enabled by setting jumper JP13.
Table 6. LIN related jumpers
Jumper Description
JP11
LIN1 operates in master mode when JP11 is set as shown:
This is the default setting.
LIN1 operates in slave mode when JP11 is set as shown:
JP12
LIN2 operates in master mode when JP12 is set as shown:
LIN2 operates in slave mode when JP12 is set as shown:
This is the default setting.
1 2 3
1 2 3
1 2 3
1 2 3
Table 7. Motor control related configuration
Jumper/resis
tor Description
JP13
PFC_PWM signal is enabled and connected to PD0 when JP13 is
set as shown:
This is the default setting.
Dissipative_Brake signal is enabled and connected to PD0 when
JP13 is set as shown:
1 2 3
1 2 3
Downloaded from Arrow.com.