ST NUCLEO-8S207K8 User manual

Introduction
The NUCLEO-8S207K8 STM8 Nucleo-32 board featuring the STM8S207K8T6C STM8 8-bit MCU provides an affordable and
flexible way for users to try out new concepts and build prototypes with STM8S Series microcontrollers in LQFP32 package,
choosing from the various combinations of performance, power consumption, and features. The ARDUINO® Nano connectivity
support makes it easy to expand the functionality of the Nucleo-32 open development platform with a wide choice of specialized
shields. The STM8 Nucleo-32 board does not require any separate probe as it integrates the ST-LINK/V2-1 debugger/
programmer and comes with the STM8 standard peripheral library, together with various packaged software examples.
Figure 1. NUCLEO-8S207K8 top view Figure 2. NUCLEO-8S207K8 bottom view
Pictures are not contractual.
STM8 Nucleo-32 board (MB1442)
UM2391
User manual
UM2391 - Rev 1 - November 2019
For further information contact your local STMicroelectronics sales office.
www.st.com

1Features
• STM8 microcontroller in LQFP32 32-pin package
• 4 LEDs:
– USB communication (LD1)
– Power (LD2)
– User (LD3)
– Default (LD4)
• 1 reset push-button
• Board connectors:
–ARDUINO® Nano V3 expansion connector
– Micro-B USB connector for the ST-LINK
– SWIM interface
• Flexible power-supply options: ST-LINK USB VBUS or external sources (3.3 V, 5 V, 7 V – 12 V)
• On-board ST-LINK/V2-1 debugger/programmer with SWIM connector and USB re-enumeration capability:
mass storage, Virtual COM port and debug port
• Comprehensive free software STM8 libraries including a variety of software examples
• Support of a wide choice of Integrated Development Environments (IDEs) including STMicroelectronics free
STVD-STM8 (using Cosmic toolchain), IAR™, Cosmic free IDEA
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Features
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2Ordering information
To order the STM8 Nucleo-32 board, refer to Table 1. Additional information is available from the datasheet and
reference manual of the target STM32.
Table 1. Ordering information
Order code Board reference Target STM32
NUCLEO-8S207K8 MB1442 STM8S207K8T6C
2.1 Product marking
Evaluation tools marked as “ES” or “E” are not yet qualified and therefore not ready to be used as reference
design or in production. Any consequences deriving from such usage will not be at ST charge. In no event, ST will
be liable for any customer usage of these engineering sample tools as reference designs or in production.
“E” or “ES” marking examples of location:
• On the targeted STM8 that is soldered on the board (for illustration of STM8 marking, refer to the STM8
datasheet “Package information” paragraph at the www.st.com website).
• Next to the evaluation tool ordering part number that is stuck or silk-screen printed on the board.
2.2 Codification
The meaning of the codification is explained in Table 2.
Table 2. Codification explanation
NUCLEO-XXYYYKT Description Example: NUCLEO-8S207K8
XX MCU series in STM8 8-bit MCUs STM8S Series
YYY MCU product line in the series STM8S207
K STM8 package pin count 32 pins
T
STM8 Flash memory size:
• 3 for 256 bytes
• 4 for 16 Kbytes
• 6 for 32 Kbytes
• 8 for 64 Kbytes
• B for 128 Kbytes
64 Kbytes
The order code is mentioned on a sticker placed on the top side of the board.
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Ordering information
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3Development environment
3.1 System requirements
• Windows® OS (7, 8 and 10)
• USB Type-A to Micro-B cable
3.2 Development toolchains
• STMicroelectronics: free STVD-STM8 (using Cosmic toolchain)
• IAR™: IAR-EWSTM8
• Cosmic: free IDEA
3.3 Demonstration software
The demonstration software is preloaded in the STM8 Flash memory for easy demonstration of the device
peripherals in standalone mode. The latest versions of the demonstration source code and associated
documentation can be downloaded from the demonstration resource section of the STM8 Nucleo board webpage
at www.st.com.
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Development environment
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4Conventions
Table 3 provides the conventions used for the ON and OFF settings in the present document.
Table 3. ON/OFF convention
Convention Definition
Jumper JPx ON Jumper fitted
Jumper JPx OFF Jumper not fitted
Jumper JPx [1-2] Jumper should be fitted between Pin 1 and Pin 2
Solder bridge SBx ON SBx connections closed by 0 Ω resistor
Solder bridge SBx OFF SBx connections left open
Resistor Rx ON Resistor soldered
Resistor Rx OFF Resistor not soldered
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Conventions
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5Quick start
The NUCLEO-8S207K8 STM8 Nucleo-32 board featuring the STM8S207K8T6C STM8 8-bit MCU provides an
affordable and flexible way for users to try out new concepts and build prototypes with an STM8S Series
microcontroller in an LQFP32 package.
Before installing and using the product, accept the Evaluation Product License Agreement from the www.st.com/
epla webpage.
For more information on the STM8 Nucleo-32 board and to access demonstration software, visit the www.st.com
webpage.
5.1 Getting started
1. Check jumper position onboard: JP1 (VDD) on [1-2] or [2-3] position.
2. Connect the STM8 Nucleo board to a PC with a Type-A to Micro-B USB cable through the USB connector
CN1 to power the board. Then LED LD1 (COM) and red LED LD2 (PWR) light up, the green LED LD3
blinks.
3. Remove the jumper placed between D2 (CN3 pin 5) and GND (CN3 pin 4).
4. Observe how the blinking of green LED LD3 changes when the jumper is in place or removed.
5. Download the demonstration software and several examples that help to use the STM8 Nucleo features.
These are available at the NUCLEO-8S207K8 product webpage.
6. Develop your own applications using the provided examples.
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Quick start
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6Hardware layout and configuration
The STM8 Nucleo-32 board is designed around an STM8S Series microcontroller in an LQFP32 package.
Figure 3 shows the connections between the STM8 and its peripherals (ST-LINK/V2-1, push-button, LED, and
ARDUINO® Nano V3 expansion connector).
Figure 4 and Figure 5 show the location of these features on the STM8 Nucleo-32 board.
The mechanical dimensions of the board are shown in Figure 6.
Figure 3. Hardware block diagram
Embedded
ST-LINK/V2-1
STM8
Microcontroller
RESET
Micro
USB
IO IO
B1
RST
ARDUINO®
Nano connector
LED
LD3
ARDUINO®
Nano connector
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Hardware layout and configuration
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6.1 STM8 Nucleo-32 board layout
Figure 4. STM8 Nucleo-32 board top layout
B1
Reset button
SB5
connects
OSCIN / PA1 to MCO
U5
STM8
microcontroller
U3
3V3 regulator
CN2
ST-LINK SWD
connector (reserved)
CN1
ST-LINK Micro-B
USB connector
LD3
Green LED
LD1
(Red/Green LED)
COM
SB8
connects
STM8 pin PD7 to TLI
SB4
connects
VCP RX to ST-LINK
SB3
connects
VCP TX to ST-LINK
LD2
Red LED Power
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STM8 Nucleo-32 board layout
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Figure 5. STM8 Nucleo-32 board bottom layout
JP1
VDD select
SB2
RST mode of STM8
SB1
Power configuration
LD4
Default LED
CN4
ARDUINO®
Nano connector
CN3
ARDUINO®
Nano connector
U6
5V regulator
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STM8 Nucleo-32 board layout
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6.2 Mechanical drawing
Figure 6. STM8 Nucleo-32 board mechanical drawing (in millimeter)
5.84 mm
5.84 mm
1.65 mm
15.24 mm
50.29 mm
18.54 mm
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Mechanical drawing
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