ARIES IoT v1.0
© October, 2022 Centre for Development of Advanced Computing (C-DAC)
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Ref.
Description
Ref.
Description
J8
Power jack
U2
THEJAS32 SoC
J6
USB C Connector
U1
3.3V Regulator
RESET
Reset Button
U4
100 MHz Oscillator
LD1
RGB LED
U5
SPI Boot Flash Memory
BTN0
Push Button 0 for GPIO
U6
Op-amp
BTN1
Push Button 1 for GPIO
U7
1.2V Regulator
LS1
Buzzer
U11
WIFI and Bluetooth Module
3.2 Processor
The main controller is THEAJS32 SoC which operates at a frequency of 100MHz. It includes VEGA
ET1031 Microprocessor, 256KB internal SRAM, Three UARTs, Four SPIs, Three TIMERs, Eight PWMs, Three
I2C interface, 32 GPIOs. Most of its pins are connected to the external headers, however some are reserved
for internal communication
.
3.3 THEJAS32 pinout
Pin #
Pin Name
Pin Description
1
GPIO1(3)
General purpose IO.
2
GPIO1(2)
General purpose IO.
3
PVSSIOC23
Ground reference for IO pins.
4
PVDDIO23
Positive supply for IO pins. Connect to 3.3V supply.
5
GPIO1(1)
General purpose IO.
6
GPIO1(0)
General purpose IO.
7
SPI3MOSI
SPI 3 Master Out Slave In.
8
PVDDC18
Positive supply for logic. Connect to 1.2V supply.
9
PVSSC18
Ground reference for logic.
10
SPI3MISO
SPI 3 Master In Slave Out.
11
SPI3CLK
SPI 3 Clock.
12
SPI3CSN
SPI 3 Chip Select.
13
PVSSIOC21
Ground reference for IO pins.
14
PVDDIO21
Positive supply for IO pins. Connect to 3.3V supply.
15
BOOT
Boot select.
16
PROCBT
Heart beat signal.
17
TEDTUPD
Connect to GND.
18
PVDDC17
Positive supply for logic. Connect to 1.2V supply.
19
PVSSC17
Ground reference for logic.
20
TSTCLK
Connect to GND through a 1K resistor.
21
TJTAGTDO
JTAG TDO. Left unconnected.
22
TJTAGTMS
JTAG TMS. Connect to GND through a 1K resistor.
23
TJTAGTDI
JTAG TDI. Connect to GND through a 1K resistor.
24
PVSSIOC19
Ground reference for IO pins.
25
PVDDIO19
Positive supply for IO pins. Connect to 3.3V supply.
26
PVDDC16
Positive supply for logic. Connect to 1.2V supply.
27
PVSSC16
Ground reference for logic.
28
TJTAGTCK
JTAG TCK. Connect to GND through a 1K resistor