View source for STM32Butterfly - Kamamilabs.com

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===== Description =====
STM32 Butterfly is simple evaluation board equipped with STM32 Connectivity Line microcontroller. 

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===== Introduction =====
STM32 Butterfly is versatile evaluation board designed for development of applications with STM32F107 microcontrollers (``Connectivity Line`` family). It can also be used as educational board for learning of ARM Cortex-M3 based microcontrollers programming. 

===== Features =====
* STM32F107VBT6 (LQFP100) microcontroller (128kB Flash, 48kB SRAM, 2xSPI, 1xI2C, 5xUART, USB-OTG, 2xCAN, MAC Ethernet, ADC, 2xDAC)
* 5-position joystick
* 2 LEDs 
* 20-pin JTAG connector for programming/debugging 
* USB On-the-go socket 
* Built-in USB power switch 
* 24 GPIO lines 
* Connector for PHY module (ZL2ETH) 
* I2C connector 
* SPI connector 
* Optional 32.768kHz generator 
* Jumpers for boot memory selection 
* Connector for current consumption measurement 
* Powered from USB 


===== Standard equipment =====

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! style="text-align: center;"|Code
! style="text-align: center;"|Description
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| style="text-align: center;"|<b> STM32Butterfly </b>
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* Assembled board with STM32F107VBT6 microcontroller 
|}
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===== Schematics  =====


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[[File:STM32Butterfly2_sch.png|none|1000px|thumb|center]]
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===== Power supply =====
STM32Butterfly board can be powered from the USB port of your PC (Con2 connector). LED D1 indicates power supply. Board is equipped with +3,3V voltage regulator. +3.3V voltage is available on GPIO pin headers, +5V is available on SPI (Con6) and I2C (Con7) connectors. 
Microcontroller power supply is connected via JP6 jumper (Imeas), that can be used to measure current consumption 



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[[File:STM32Butterfly_sch1.png|none|800px|thumb|center]]
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[[File:STM32Butterfly_pcb1.png|none|600px|thumb|center]]
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===== Joystick =====
STM32Butterfly is equipped with 5-position joystick. Each position has pull-up resistor. Joystick lines are connected to 8...12 lines of port E. 


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[[File:STM32Butterfly_sch2.png|none|400px|thumb|center]]
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[[File:STM32Butterfly_pcb2.png|none|600px|thumb|center]]
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===== Ethernet interface =====
STM32Butterfly has connector for PHY Ethernet module (for example ZL2ETH with STE100P). JP3/MDInt jumper allows connection of PHY module interrupt line to microcontroller 13 line of port D. 



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[[File:STM32Butterfly_sch10.png|none|400px|thumb|center]]
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[[File:STM32Butterfly_pcb10.png|none|300px|thumb|center]]
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===== LEDs =====
STM32Butterfly is equipped with two LEDs (D2 and D3). They can be lit on with low logic level on GPIO 14 and 15 lines of port of port E. 


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[[File:STM32Butterfly_sch3.png|none|400px|thumb|center]]
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[[File:STM32Butterfly_pcb3.png|none|600px|thumb|center]]
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===== I2C connector =====
STM32Butterfly is equipped with Con7/I2C connector for external devices with I2C interface. SCL and SDA lines do not have pull-up resistors. 


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[[File:STM32Butterfly_sch4.png|none|400px|thumb|center]]
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[[File:STM32Butterfly_pcb4.png|none|300px|thumb|center]]
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===== SPI connector =====
STM32Butterfly is equipped with Con6/SPI connector for external devices with SPI interface. SPI lines do not have pull-up resistors. 


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[[File:STM32Butterfly_sch5.png|none|400px|thumb|center]]
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[[File:STM32Butterfly_pcb5.png|none|300px|thumb|center]]
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===== USB On-the-go connector =====
STM32Butterfly is equipped with USB On-the-go port with USB-A socket. Current consumption of USB device connected to board cannot exceed 500 mA. 


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[[File:STM32Butterfly_sch6.png|none|400px|thumb|center]]
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[[File:STM32Butterfly_pcb6.png|none|300px|thumb|center]]
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===== ZBOOT jumpers =====
STM32Butterfly is equipped with BOOT0 and BOOT1 jumpers that allow selection of boot memory. 


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{| class="wikitable"  style="width: 600px;"
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! style="text-align: center;”|BOOT0
! style="text-align: center;”|BOOT1
! style="text-align: center;”|Boot mode 
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| style="text-align: center;”|0
| style="text-align: center;”|x
| style="text-align: center;”|Boot from Flash
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| style="text-align: center;”|1
| style="text-align: center;”|0
| style="text-align: center;”|Boot from system memory (bootloader)
|-
| style="text-align: center;”|1
| style="text-align: center;”|1
| style="text-align: center;”|Boot from embedded RAM 
|}
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[[File:STM32Butterfly_sch7.png|none|400px|thumb|center]]
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[[File:STM32Butterfly_pcb7.png|none|300px|thumb|center]]
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===== I/O pin headers =====
STM32Butterfly is equipped with three 10-pin IDC headers with microcontroller GPIO lines (PC4...11, PD0...7 and PE0...7). 


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[[File:STM32Butterfly_sch8.png|none|400px|thumb|center]]
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[[File:STM32Butterfly_pcb8.png|none|300px|thumb|center]]
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===== JTAG connector =====
STM32Butterfly is equipped with Con5/JTAG connector for Flash programming/debugging with JTAG interface (for example ZL30PRG). 


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[[File:STM32Butterfly_sch9.png|none|400px|thumb|center]]
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[[File:STM32Butterfly_pcb9.png|none|300px|thumb|center]]
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[[File:ZL30PRG.jpg|none|400px|thumb|center]]
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<center>ZL30PRG JTAG interface </center>


===== Optional 32.768kHz generator =====
STM32Butterfly can be optionally equipped with 32.768 kHz generator and two 10pF capacitors. 


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[[File:STM32Butterfly_sch11.png|none|400px|thumb|center]]
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[[File:STM32Butterfly_pcb11.png|none|300px|thumb|center]]
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