BB3 MCU board
Buy Parts
References | Qty | Description | Manufacturer | MPN | Manufacturer | MPN | Manufacturer | MPN | Manufacturer | MPN |
---|---|---|---|---|---|---|---|---|---|---|
B1 | 1 | DS1092-10-W6L | 732-12325-1-ND | 79527141 | DS1092-10-W6L | |||||
C1, C14 | 2 | EEEFK1V220R | EEEFK1V220R | |||||||
C10, C12 | 2 | 18p | VJ0603A180JXACW1BC | 1276-1089-1-ND | C0603C180J5GACTU | CL10C180JB8NNNC | ||||
C11, C13 | 2 | 4p7 | MC0603N4R7C500CT | 311-1740-1-ND | C0603C479C5GACTU | CL10C4R7CB8NNNC | ||||
C2, C31, C32, C37, C38, C53 | 6 | 2u2 | GRM21BR71C225KA12L | 1276-2954-1-ND | CL21B225KAFNNNF | CL21B225KOFNNNG | ||||
C24, C34, C35, C51, C58 | 5 | 1u | 885012207078 | 1276-1066-1-ND | 08052R104K8BB | VJ0805Y105KXXTW1BC | ||||
C3, C5, C7, C8 | 4 | 10n | VJ0805Y103JXXPW1BC | 490-7194-1-ND | 08055C103KAT2A | CC0805KRX7R9103 |
Overview
IMPORTANT: A crowdfunded version of the MCU module (r2B4) can be found here.
STM32F7 MCU board for controlling up to 3 SPI peripheral modules, I2C fan controller, power soft-start/standby, TFT LCD with resistive touch controller, USB OTG, 10/100 Mbit/s Ethernet, SDRAM, EEPROM, rotary encoder, user switch, speaker and 2+2 digital I/O.
r3B3 prototype
Feature list
- STM32F769IIT6 32-bit ARM Cortex®-M7 MCU, 216 MHz, 2 MiB Flash, 512 KiB SRAM, LQFP176 package
- Digital I/O: 2 x buffered inputs and 2 x buffered outputs. Alternative functions: UART, 1 x PWM
- Rotary encoder with switch
- 1 x user switch (use as BOOT0 for firmware loader on power up)
- 3 x SPI channels (2 x Chip selects per channel), 40-pin IDC connector (DIB v1.0)
- Battery backup (CR2032 button cell type)
- AC frequency (50/60 Hz) RTC reference (optional)
- External supervisor with watchdog (optional)
- USB FS, OTG
- Micro SD card
- DP83848C Ethernet PHY (10/100 Mbit/s)
- 32 KiB I2C EEPROM
- SWG/JTAG connector (optional)
- 8 MiB SDRAM (e.g. IS42S16400J) upgradeable to 32 MiB
- 0.5 mm FFC 40-pin connector for 4.3" TFT LCD 480 x 272 px display
- TFT backlight brightness control
- Resistive touch controller (I2C)
- Soft-start/stand-by control lines for AUX PS board
- Small on-board speaker
- Input power: +5 V (+12 V pass-thru to peripheral modules)
- On board +3.3 V LDO
- Dimensions: 139.5 x 70 mm, 4-layer PCB
- CE certified design