Pumpkin Motherboard Module (MBM) 2 Rev. F
Pumpkin, Inc.
A motherboard module designed to interface a BeagleBone Black (BBB) processor with a CubeSat Kit (CSK) bus, providing various I/O options and power management.
Key figurescomparable across the catalogue
- Data rate
- 50 Mbps
Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.
As published by the supplier
- Operating temperature
- -40 to +85 ºC
- Voltage on +5V_USB bus
- -0.3 to +6 V
- Voltage on +5V_SYS bus
- -0.3 to +6 V
- Voltage on VCC_SYS bus
- -0.3 to +3.6 V
- Voltage on local VCC bus
- -0.3 to +3.6 V
- Height of components above PCB
- 11 mm
- Height of components below PCB
- 3.5 mm
- PCB width
- 96 mm
- PCB length
- 90 mm
- PCB thickness
- 1.6 mm
- CubeSat Kit Bus Connector terminal pitch
- 2.54 mm
- Maximum external dc voltage on +5V_SYS or to P1 on BBB
- 6.0 V
- Backup battery voltage
- 3.0-3.5 V
- Operating current (without BBB)
- 10 mA
- Operating current (with BBB, Ethernet disabled)
- 300 mA
- Operating current (with BBB, Ethernet enabled)
- 350 mA
- RTC crystal frequency
- 32.768 ± 0.001 kHz
- Overcurrent trip point for VDD_5V
- 920 mA
- Overcurrent trip point for VDD_PHY
- 920 mA
- Overcurrent trip point for +5V_USB
- 750 mA
- Data rate through any on-board isolator (U1-U3)
- 50 MHz
- I2C addresses available to slave devices
- 0x04-0x7F
- I2C clock speed
- 400 kHz
- I2C pull-up resistors
- 1.5k Ω
About
The Motherboard Module (MBM) 2 Rev. F is an interface board that connects a BeagleBone Black (BBB) processor to a CubeSat Kit (CSK) bus. It provides I/O isolation for digital I/O signals and manages power for the BBB. The module features various configurable interfaces, including RS422 with TI SN65HVD73 transceivers (20Mbps) supporting UART and SPI-over-RS422 configurations, LVTTL single-ended UARTs (UART0 and UART2), and I2C signals. It also includes a 6-pin Hirose DF13 right-angle header (J133) for five BBB GPIO signals, actively isolated and +5V-tolerant, and a 4-pin FPC connector (J132) for the BBB’s UART0 serial port, used for boot control and debug. The MBM2 operates from a +5Vdc system power supply (+5V_SYS) and provides +3.3V logic levels for BBB I/O. It includes an external watchdog timer (WDT) interface and offers unidirectional signals and power-on sequencing/protection between the BBB and the CSK bus connector on a per-GPIO-pin basis. The PCB features a corner hole pattern matching PC/104.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.