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trezor-firmware/docs/hardware.md

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# TREZOR Core Hardware
## TREZOR v2 Open Source Hardware Reference Documentation
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### Photo
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![Photo Front](hardware/photo-front.jpg)
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### Bill of Materials / BOM
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[BOM](hardware/bom.txt)
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### Schematic
![Schematic](hardware/schematic.png)
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## Developer Kit
* 1 x [STM32F429I-DISC1](http://www.st.com/en/evaluation-tools/32f429idiscovery.html)
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* 1 x USB Cable Type A Plug/Male to Type Mini-B Plug/Male
* 1 x USB Cable Type A Plug/Male to Type Micro-B Plug/Male
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* 1 x [ER-TFTM028-4 Display + Capacitive Touch Panel Module](http://www.ebay.com/itm/302049581340) (Note: specify 40-Pin Header, 8080 8-bit Parallel, VDD=3.3V, Capacitive Touch Panel)
* 1 x [microSD Board](https://www.waveshare.com/product/modules/storage/sd-tf-storage/micro-sd-storage-board.htm)
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* 28 x Female to female jumper wires with 0.1" header contacts
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#### Display
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* Resolution: 240px x 240px -OR- 240px x 320px
* Driver IC: ST7789V or ILI9341V (on-chip display data RAM of 240x320x18 bits)
* 18-bit (262,144) RGB color graphic type TFT-LCD
* Bus/Interface: 8080-I 8-bit parallel with 16-bit/pixel (RGB 5-6-5)
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##### Pinout
|Description|MCU Pin|Notes|
|-----------|-------|-----|
|LCD_RST|PC14|display module pin 21|
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|LCD_FMARK|PD12|tearing effect input; display module pin 22|
|LCD_PWM|PA7|backlight control (brightness); display module pin 29|
|LCD_CS|PD7|display module pin 23|
|LCD_RS|PD11|register select aka command/data; display module pin 24|
|LCD_RD|PD4|display module pin 26|
|LCD_WR|PD5|display module pin 25|
|LCD_D0|PD14|display module pin 3|
|LCD_D1|PD15|display module pin 4|
|LCD_D2|PD0|display module pin 5|
|LCD_D3|PD1|display module pin 6|
|LCD_D4|PE7|display module pin 7|
|LCD_D5|PE8|display module pin 8|
|LCD_D6|PE9|display module pin 9|
|LCD_D7|PE10|display module pin 10|
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#### Capacitive Touch Panel / Sensor
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* Bus/Interface: I2C
* Driver IC: FT6236 or FT6206
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* single touch
##### Pinout
|Description|MCU Pin|Notes|
|-----------|-------|-----|
|I2C1_SCL|PB6|display module pin 30|
|I2C1_SDA|PB7|display module pin 31|
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|EINT|PC4|display module pin 39|
|REST|PC5||
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#### microSD Socket
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* Bus/Interface: 4-bit
##### Pinout
|Description|MCU Pin|
|-----------|-------|
|SDIO_D0|PC8|
|SDIO_D1|PC9|
|SDIO_D2|PC10|
|SDIO_D3|PC11|
|SDIO_CK|PC12|
|SDIO_CMD|PD2|
|SD_CARDDETECT|PC13|
#### USB Socket
* USB HS (high-speed) peripheral in FS (full-speed) mode
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##### Pinout
|Description|MCU Pin|
|-----------|-------|
|OTG_HS_VBUS|PB13|
|OTG_HS_ID|PB12|
|OTG_HS_DM|PB14|
|OTG_HS_DP|PB15|
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#### Dev Board
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* [STM32F429ZIT6](http://www.st.com/en/microcontrollers/stm32f429zi.html)
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* HSE / High-Speed External Crystal: 8 MHz
* Integrated STMicroelectronics ST-LINK/V2.1 debugger
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Minimum MCU requirements:
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* STM32F4 family [STM32F427VIT6](http://www.st.com/en/microcontrollers/stm32f427vi.html)
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* 168 MHz, 8 MHz HSE
* 2048 KB Flash memory
* 192 KB SRAM
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* 64 KB CCMRAM
* FMC controller
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* TRNG
#### Clock Tree
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![Clock Tree](hardware/clock-tree.png)