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EX-STM8-Q48a-105 Premium, STM8 Development Board

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A complete starter kit and development system for the STM8S105Cx series microcontrollers

Overview


connecting the two boards

A complete starter kit and development system for the STM8S105Cx series microcontrollers, such as STM8S105C4, STM8S105C6. It is designed to give designers a quick start to develop code on these devices.


This development system contains a main development board with the STM8S105CxT6 chip, and an additional expansion board with various peripheral devices.


The BUS-A & BUS-B headers located on both boards should be used to connect the two boards via 10-pin cables, which are delivered with the product. As shown in the figure right.




What's On Board


EX-STM8-Q48a-105



  • Power

    • Powered from external 5V power supply through DC jack

    • Power input/output pin headers

      • spare power input port

      • convenient for providing power supply to other board/device if necessary



    • Jumper for configuring voltage level to be applied, 5V/3.3V



  • Onboard Chips

    • STM8S105CxT6 (LQFP48), the STM8 Microcontroller

    • AMS1117-3.3, on board regulator



  • Interfaces

    • SWIM port for programming/debuging, compatible with ST-LINK

    • BUS-A & BUS-B, for connecting to the expansion board DVK501, ease to study/develop various peripheral devices



  • Human to Machine Interface

    • Reset button, used to reset the system

    • Power indicator LED

    • 3 Capacitive touchkeys, make it easy to work with the STM8 Touch Sensing Library



  • Other Features

    • External crystal configurable

      • there is a jumper for selecting on board 8M crystal or custom crystal mounted via the socket



    • All the MCU pins are accessible on expansion connectors for further expansion

    • All the pins are clearly marked on the PCB. These marks provide the basic information on the pins




EX-STM8-Q48a-105 introduction


  1. 5V DC jack

    • default power input



  2. Power indicator

  3. Power input/output

    • 5V/3.3V

    • spare power input

    • power output is available



  4. Microcontroller

    • STM8S105CxT6

    • LQFP48 package



  5. SWIM port

    • for programming/debugging

    • compatible with ST-LINK



  6. Reset

  7. Capacitive touchkeys

  8. Load, Shield jumper

    • PB6, PB7 can be configured via jumpers as Load, Shield inputs or regular I/O pins

    • Load, Shield inputs can be connected to other custom ports



  9. Touchkey enable jumper

    • PB1-PB3 can be configured via jumpers as touchkey inputs or regular I/O pins

    • touchkey inputs can be connected to other custom ports





  1. BUS-A & BUS-B expansion ports

    • for connecting to DVK501

    • header pinout definition is provided

    • ease to develop various peripherals



  2. I2C configuration

    • left for selecting PE1, PE2

    • right for selecting PB4, PB5



  3. Pin headers connected to MCU pins

    • marked clearly on the PCB

    • easy for testing and further expansion



  4. External crystal configuration

    • on board 8M crystal

    • custom crystal socket

    • selected via jumper



  5. On board regulator

    • 3.3V

    • AMS1117-3.3



  6. Voltage level configuration

    • 5V/3.3V via on board jumper




 


DVK501

















































































Device on boardDescriptionInterface
AT24CXX 2-Wire Serial EEPROM keeps data after power down I2C
PCF8563 Real-time clock/calendar, low backup current from battery I2C
PCF8591 8-bit A/D and D/A converter, four channels AD conversion, one channel DA conversion I2C
PCF8574 Remote 8-bit I/O expander I2C
DS18B20 Programmable Resolution 1-Wire Digital Thermometer, measures temperatures from –55°C to +125°C 1-Wire
DS2401 Silicon Serial Number, a low-cost, electronic registration number that provides an absolutely unique identity 1-Wire
AT45DBXX Serial-interface sequential access Flash memory ideally suited for higher memory density requirement SPI
74HC164 8-bit serial-in, parallel-out shift register, for reducing the IO cost SART
74HC165 8-bit parallel-in, serial out shift register, for reducing the IO cost SART
MAX3232 3.0V to 5.5V, True RS-232 Transceivers, for communicating with the PC serial
MAX485 RS-485 Transceiver, for long distance communication serial
PS/2 PS/2 interface, for connecting the keyboard or mouse 2 wires
LED 8-bit status indicator LED, also can be used for displaying simple data 8 wires
Character LCD Connector Used for connecting the character LCD module, such as LCD1602 7 wires or 11 wires
Graphic LCD Connector Used for connecting the Graphic LCD module, such as LCD12864 SPI or 12 wires

Examples


Examples that come with this development system will show you how to connect the STM8 microcontroller to other peripheral components or devices and how to develope your prototype device easily. The pictures below show how the EX-STM8-Q48a-105 works with the DVK501 and the results of the examples.


Note: The LCD12864 is not included in the price, please browse our store to buy it separately if you need one. Click on the image to enlarge.



power required
External power supply is required

74HC164-74HC165
Serial/parallel communication example using 74HC164/74HC165

AT24Cxx
Writing and Reading data from AT24CXX EEPROM via I2C interface

 

AT45DBxx
Writing and Reading data from AT45DBXX DATAFLASH via SPI interface

DS18B20
Measuring temperature with DS18B20+ and displaying results on LCD

MAX3232
Sending and receiving data over UART interface using MAX3232

 

PCF8563
Reading date and time from PCF8563 Real Time Clock

AT45DBxx
Example of PCF8574 I/O expander

PCF8591
A/D conversion and displaying conversion results on LCD

 

PS2
Sending data from PS/2 keyboard

AT45DBxx
Sending and receiving data over UART interface using MAX485

DS18B20
registration number identification via 1-wire bus using DS2401

 

LCD1602
Displaying text on LCD

touch
example of capacitive touch sensing




Development Resources



  • User Guide CD

    • CD with software, drivers and examples



  • Schematic Circuit Diagram

    • Designed by using Protel

    • Provides IMG format or Protel SchDoc format



  • Program Examples

    • Based on ST Visual Develop and Cosmic C

    • Common application library is provided



  • Related Software

    • Cosmic STM8

    • sttool



  • Datasheets of the chips





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