Updated documentation with component changes to have everything use 3.3V
This commit is contained in:
William Miceli
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@page designChoices Design Choices
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# JTAG Interface
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When connecting the MCU to the programmer via the JTAG interface, it is possible for a local power supply connected to the MCU to be used or for power from the debugging/programming adapter to be used. Since having power supplied to the MCU from the debugging/programming adapter can be useful for use outside of the Sunseeker vehicle, we chose to use that.
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# Microcontroller Connections
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The board is going to be organized to the best of our abilities to be organized as such:
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- Left Side:
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- Peripherals for communicating with/controlling the Sunseeker vehicle
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- Right Side:
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- Peripherals for communicating with users
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#### Universal Serial Communication Interfaces (USCIs):
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- A - Supporting up to four total of UART and/or SPI
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- A0 [SPI]:
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- CANbus Controller 0 (Microchip Technology MCP2515T-I/SO)
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- CANbus Controller 1 (Microchip Technology MCP2515T-I/SO)
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- A1:
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- A2 [UART]:
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- USB to UART Bridge (Future Technology Devices International FT230XS-R)
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- A3 [UART]:
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- RS-232 Transceiver (STMicroelectronics ST232CDR)
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- B - Supporting up to four total of I2C and/or SPI
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- B0 [SPI]:
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- SD Card
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- GPS Receiver (U-Blox NEO-M8Q-01A)
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- B1 [I2C]:
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- Inertial Measurement Unit (TDK InvenSense ICM-20948)
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- Real-Time Clock/Calendar (Microchip Technology MCP7940MT-I/SN)
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- B2:
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- B3 [SPI]:
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- Bluetooth/Wi-Fi (Espressif Systems ESP32-WROVER-IE (8MB))
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@page designChoices Design Choices
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# JTAG Interface
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When connecting the MCU to the programmer via the JTAG interface, it is possible for a local power supply connected to the MCU to be used or for power from the debugging/programming adapter to be used. Since having power supplied to the MCU from the debugging/programming adapter can be useful for use outside of the Sunseeker vehicle, we chose to use that.
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# Microcontroller Connections
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The board is going to be organized to the best of our abilities to be organized as such:
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- Left Side:
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- Peripherals for communicating with/controlling the Sunseeker vehicle
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- Right Side:
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- Peripherals for communicating with users
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#### Universal Serial Communication Interfaces (USCIs):
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- A - Supporting up to four total of UART and/or SPI
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- A0 [SPI]:
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- CANbus Controller 0 (Microchip Technology MCP2515T-I/SO)
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- CANbus Controller 1 (Microchip Technology MCP2515T-I/SO)
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- A1:
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- A2 [UART]:
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- USB to UART Bridge (Future Technology Devices International FT230XS-R)
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- A3 [UART]:
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- RS-232 Transceiver (Maxim Integrated MAX3232EUE+)
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- B - Supporting up to four total of I2C and/or SPI
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- B0 [SPI]:
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- SD Card
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- GPS Receiver (U-Blox NEO-M8Q-01A)
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- B1 [I2C]:
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- Inertial Measurement Unit (TDK InvenSense ICM-20948)
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- Real-Time Clock/Calendar (Microchip Technology MCP7940MT-I/SN)
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- B2:
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- B3 [SPI]:
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- Bluetooth/Wi-Fi (Espressif Systems ESP32-WROVER-IE (8MB))
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In addition to trying to keep the MCU and PCB organized with the left-side being to do with the Sunseeker vehicle and the right side to be peripherals interacting with users, we tried to also load-balance the USCI modules, as well as have the SPI protocol be used in more high data-rate peripherals and I2C used with lower or less-used peripherals. In Texas Instruments SLAS655G Document [Page 7] has a pin diagram showing the physical location of where each pin is physically located.
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@@ -1,132 +1,132 @@
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@page deviceSpecifications Device Specifications
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## Microcontroller: Texas Instruments MSP430F5438AIPZR
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- Power
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- 1.8 V to 3.6 V Supply Voltage
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- Up to 4.6mA needed
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- Capabilities:
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- 16-bit architecture
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- 25 MHz System Clock
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- Notable Peripherals:
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- Up to 4 of:
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- UART/SPI
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- Up to 4 of:
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- I2C/SPI
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- 12-bit ADC
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- 14 external channels
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## Real-Time Clock/Calendar: Microchip Technology MCP7940MT-I/SN
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- Power
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- 1.8 V to 5.5 V Supply Voltage
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- 1.2uA typical timekeeping current required at 3.3V (This will be powered exclusively by a CR2032 battery)
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- Notable Peripherals:
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- I2C
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- Slave only
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- Clock rate up to 400 kHz
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## Bluetooth/Wi-Fi: Espressif Systems ESP32-WROVER-IE (8MB)
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- Power
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- 3.0 V to 3.6 V Supply Voltage
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- Minimum 500mA needed up to 1.6A (500mA + 1100mA maximum cumulative IO output)
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- Notable Peripherals:
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- I2C (2)
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- Master or Slave
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- 100 kbit/s or 400 kbit/s
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- 7-bit/10-bit addressing mode
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- SPI
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- SPI, HSPI and VSPI
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- Master or Slave
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- 1-line full-duplex and 1/2/4-line half-duplex
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- Up to 80 MHz
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- Up to 64-byte FIFO
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- UART (3)
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- Up to 5 Mbps
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## GPS Receiver: U-Blox NEO-M8Q-01A
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- Power
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- 2.7 V to 3.6 V
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- 67mA maximum current needed; 17mA typical will be likely usage
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- Notable Peripherals:
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- SPI
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- Slave Only
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- 5.5 MHz
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- UART
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- I2C (Also called Display Data Channel (DDC))
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- Slave Only
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- 400 kHz
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## CANbus Controller: Microchip Technology MCP2515T-I/SO
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- Power
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- 2.7 V to 5.5 V Supply Voltage
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- 5mA typical in active mode; 1uA typical in sleep mode
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- Notable Peripherals:
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- SPI
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- Slave (Assuming only option)
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- 10 MHz
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## CANbus Transceiver: Microchip Technology MCP2542FD-H/SN
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- Power
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- 4.5 V to 5.5 V Supply Voltage
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- 55mA typical maximum; 4uA typical in standby
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- Used directly with CANbus Controller
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## SD Card (Generic)
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- Power
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- 2.7 V to 3.6 V Supply Voltage
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- Notable Peripherals:
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- SPI
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## USB to UART Bridge: Future Technology Devices International FT230XS-R
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- Power
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- 3 V to 5 V Supply Voltage
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- 8.3mA maximum usage in normal operation (This chip will be exclusively powered an external host device)
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- Notable Peripherals:
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- UART
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## RS-232 Transceiver: STMicroelectronics ST232CDR
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- Power
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- 4.5 V to 5.5 V Supply Voltage
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- Estimating 10mA typical average usage
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- Will use UART from the MCU
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## Inertial Measurement Unit: TDK InvenSense ICM-20948
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- Power
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- 1.71 V to 3.6 V Supply Voltage
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- 3mA typical usage in full 9-Axis mode; 8uA typical in "Full-Chip Sleep Mode"
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- VDDIO Voltage input also needed from 1.71 V to 1.95 V
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- Notable Peripherals:
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- I2C
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- Slave only
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- 400 kHz
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- SPI
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- Slave only
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- 7 MHz
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@page deviceSpecifications Device Specifications
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## Microcontroller: Texas Instruments MSP430F5438AIPZR
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- Power
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- 1.8V to 3.6V Supply Voltage
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- Up to 4.6mA needed
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- Capabilities:
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- 16-bit architecture
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- 25MHz System Clock
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- Notable Peripherals:
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- Up to 4 of:
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- UART/SPI
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- Up to 4 of:
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- I2C/SPI
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- 12-bit ADC
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- 14 external channels
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## Real-Time Clock/Calendar: Microchip Technology MCP7940MT-I/SN
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- Power
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- 1.8V to 5.5V Supply Voltage
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- 1.2uA typical timekeeping current required at 3.3V (This will be powered exclusively by a CR2032 battery)
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- Notable Peripherals:
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- I2C
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- Slave only
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- Clock rate up to 400kHz
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## Bluetooth/Wi-Fi: Espressif Systems ESP32-WROVER-IE (8MB)
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- Power
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- 3.0V to 3.6V Supply Voltage
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- Minimum 500mA needed up to 1.6A (500mA + 1100mA maximum cumulative IO output)
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- Notable Peripherals:
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- I2C (2)
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- Master or Slave
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- 100kbit/s or 400kbit/s
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- 7-bit/10-bit addressing mode
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- SPI
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- SPI, HSPI and VSPI
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- Master or Slave
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- 1-line full-duplex and 1/2/4-line half-duplex
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- Up to 80MHz
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- Up to 64-byte FIFO
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- UART (3)
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- Up to 5Mbps
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## GPS Receiver: U-Blox NEO-M8Q-01A
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- Power
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- 2.7V to 3.6V
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- 67mA maximum current needed; 17mA typical will be likely usage
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- Notable Peripherals:
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- SPI
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- Slave Only
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- 5.5MHz
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- UART
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- I2C (Also called Display Data Channel (DDC))
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- Slave Only
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- 400kHz
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## CANbus Controller: Microchip Technology MCP2515T-I/SO
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- Power
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- 2.7V to 5.5V Supply Voltage
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- 5mA typical in active mode; 1uA typical in sleep mode
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- Notable Peripherals:
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- SPI
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- Slave (Assuming only option)
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- 10MHz
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## CANbus Transceiver: Texas Instruments SN65HVD234D
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- Power
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- 3V to 3.6V Supply Voltage
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- 6mA typical maximum; 200uA typical in standby
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- Used directly with CANbus Controller
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## SD Card (Generic)
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- Power
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- 2.7V to 3.6V Supply Voltage
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- Notable Peripherals:
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- SPI
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## USB to UART Bridge: Future Technology Devices International FT230XS-R
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- Power
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- 3V to 5V Supply Voltage
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- 8.3mA maximum usage in normal operation (This chip will be exclusively powered an external host device)
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- Notable Peripherals:
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- UART
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## RS-232 Transceiver: Maxim Integrated MAX3232EUE+
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- Power
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- 3V to 5.5V Supply Voltage
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- Estimating 0.3mA typical average usage
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- Will use UART from the MCU
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## Inertial Measurement Unit: TDK InvenSense ICM-20948
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||||
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- Power
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- 1.71V to 3.6V Supply Voltage
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- 3mA typical usage in full 9-Axis mode; 8uA typical in "Full-Chip Sleep Mode"
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- VDDIO Voltage input also needed from 1.71V to 1.95V
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- Notable Peripherals:
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- I2C
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- Slave only
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- 400kHz
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- SPI
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- Slave only
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- 7MHz
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