ESP32 EXPANSION BOARD ARUAL

This extender board adds functionality to the «ARUAL ESP32» processors.

Add the possibility of external 12V or battery power supply, pulse inputs, analog inputs, a power supply with shutdown function and a FRAM memory.

It also adds connections to add other electronics such as RS-485, RS-232, pulse counters with I2C communications or latch valve control.

MIC29302AWU:

Features

• High-Current Capability
• Operating Input Voltage Range: 3V to 16V
• Low Dropout Voltage
• Low Ground Current
• Accurate 1% Tolerance
• Fast Transient Response
• 1.24V to 15V Adjustable Output Voltage
• Packages: TO-263-5L and TO-252-5L

Applications

• Processor Peripheral and I/O Supplies
• High-Efficiency Green Computer Systems
• Automotive Electronics
• High-Efficiency Linear Lower Supplies
• Battery-Powered Equipment
• PC Add-In Cards
• High-Efficiency Post-Regulator for Switching Supply

DS1682:

Benefits and Features

• Records the Total Time That the Event Input Has Been Active and the Number of Events That Have Occurred
• 32-Bit, Nonvolatile, Elapsed Time Counter (ETC) Monitors Event Duration with Quarter-Second Resolution and Provides 34 Years of Total Time Accumulation
• Programmable Elapsed Time ALARM Output
• Nonvolatile, 17-Bit Event Counter Records the Total Number of Times an Event has Occurred
• Calibrated, Temperature-Compensated RC Time Base Accurate to 2% Typical
• 10 Bytes of EEPROM User Memory
• Write Disable Function to Prevent the Memory from Being Changed or Erased
• 2-Wire Serial Communication
• Wide 2.5V to 5.5V Power-Supply Range
• Useful in Time-of-Use Warranty, Calibration, Repair, and Maintenance Applications

TCA9543APWR:

Features

• 1-of-2 Bidirectional Translating Switches
• I2C Bus and SMBus Compatible
• Two active-low interrupt inputs
• Active-low interrupt output
• Active-low reset input
• Two address pins allowing up to four TCA9543A devices on the I2C bus
• Channel selection via I2C bus, in any combination
• Power-up with all switch channels deselected
• Low RON switches
• Allows voltage-level translation between 1.8-V, 2.5-V, 3.3-V, and 5-V buses
• No glitch on power-up
• Supports hot insertion
• Low standby current
• Operating power-supply voltage range of 1.65-V to 5.5-V
• 5.5-V Tolerant inputs
• 0 to 400-kHz Clock frequency
• Latch-up Performance exceeds 100-mA Per JESD78
• ESD Protection exceeds JESD 22
  • 4000-V Human-body model (A114-A)
  • 1500-V Charged-device model (C101)

SN75HVD08:

Features

• Operates With a 3-V to 5.5-V Supply
• Consumes Less Than 90-mW Quiescent Power
• Open-Circuit, Short-Circuit, and Idle-Bus Failsafe Receiver
• 1/8th Unit-Load (up to 256 nodes on the bus)
• Bus-Pin ESD Protection Exceeds 16-kV HBM
• Driver Output Voltage Slew-Rate Limited for Optimum Signal Quality at 10 Mbps
• Electrically Compatible With ANSI TIA/EIA-485 Standard

SC4503:

Features

• Low Saturation Voltage Switch: 260mV at 1.4A
• 1.3MHz Constant Switching Frequency
• Peak Current-mode Control
• Internal Compensation
• Programmable Soft-Start
• Input Voltage Range From 2.5V to 20V
• Output Voltage up to 27V
• Uses Small Inductors and Ceramic Capacitors
• Low Shutdown Current (< 1μA)

MAX3221:

Features

• RS-232 Bus-Pin ESD Protection Exceeds line receiver with dedicated enable pin, and a dual ±15 kV Using Human Body Model (HBM).
• Meets or Exceeds the Requirements of TIA/EIA-232-F and ITU V.28 Standards.
• Operates With 3-V to 5.5-V VCC Supply .
• Operates up to 250 kbps.
• Low Standby Current: 1 μA Typical

MR44V100A:

Features

• 131,072-word × 8-bit configuration I2C BUS Interface
• A single 3.3 V typ. (1.8V to 3.6V) power supply
• Operating frequency:
  • 3.4MHz(Max) HS-mode
  • 1MHz(Max) F/S-mode Plus
• Read/write tolerance
  • 10(12) cycles/bit
• Data retention: 10 years
• Guaranteed operating temperature range −40 to 85°C
• Low power consumption
  • Power supply current (@3.4MHz):
    • 1.1mA(Max.)
  • Standby mode supply current:
    • 10μA(Typ.)
    • 50μA(Max.)
  • Sleep mode supply current:
    • 0.1μA(Typ.)
    • 2μA(Max.)
• Package options:
  • 8-pin plastic SOP (P-SOP8-200-1.27-T2K)
• RoHS (Restriction of hazardous substances) compliant

ESP32:

Features

• 240 MHz dual core Tensilica LX6 microcontroller with 600 DMIPS
  • Integrated 520 KB SRAM
  • Integrated 802.11b/g/n HT40 Wi-Fi transceiver, baseband, stack and LWIP
  • Integrated dual mode Bluetooth (classic and BLE)
• 4 MByte flash include in the WROOM32 module
• On-board PCB antenna
• Ultra-low noise analog amplifier
• Hall sensor
• 10x capacitive touch interface
• 32 kHz crystal oscillator
• 3 x UARTs (only two are configured by default in the Feather Arduino IDE support, one UART is used for bootloading/debug)
• 3 x SPI (only one is configured by default in the Feather Arduino IDE support)
• 2 x I2C (only one is configured by default in the Feather Arduino IDE support)
• 12 x ADC input channels
• 2 x I2S Audio
• 2 x DAC
• PWM/timer input/output available on every GPIO pin
• OpenOCD debug interface with 32 kB TRAX buffer
• SDIO master/slave 50 MHz
• SD-card interface support