C-DAC Aries V3 THEJAS32 Microcontroller Board – Pinout Diagram & Pin Reference

Aries V3 is a THEJAS32 SoC development board by C-DAC (Centre for Development of Advanced Computing, India). The microcontroller SoC and the board are a result of the DIR-V program funded by the Ministry of Electronics and Information Technology (MeitY), Government of India. The THEJAS32 SoC integrates a 32-bit single-core VEGA ET1031 RISC-V CPU that runs at 100 MHz. The SoC is available as a 128-pin LQFP package. The Aries V3 board is the third version of THEJAS32-based boards. It is the cheapest one in the family and gives you a bare minimum system for development. The Aries V3 is designed in the same form factor as an Arduino Uno with pin compatibility. On this page, you will find a vector pinout diagram, Arduino pin reference and other useful information for the Aries V3 board.

Aries V3

If you are new to Aries V3 and the THEJAS32 microcontroller, we have a tutorial to get you started. You can use the Arduino IDE or VS Code to develop applications for your Aries V3 boards.

Specifications

Specification	Value
Microcontroller	THEJAS32 SoC
Microprocessor Core	32-bit VEGA ET1031
Core Count	1
SRAM	256 KB
Flash	2MB (External)
Input Voltage	7-12V
USB	USB-C
PWM Pins	8
Analog Input Pins	4
SPI	3
UART	3
I2C	2
GPIOs	32
DC Current per I/O Pin	12 mA
IO Voltage	3.3V
Clock Speed	100 MHz
Length	78 mm
Width	66 mm

Board Topology

Reference	Description
J5	UART
J7	SPI1
J4	SPI2
J8	Power Jack
J6	USB-C Connector
J12	Boot Select Header
J14	Power Header
RESET	Reset Button
LD1	RGB LED
LD4	Processor HeartBeat LED
U2	THEJAS32 SoC
U1	3.3V Regulator
U4	100 MHz Oscillator
U5	SPI Boot Flash Memory
U6	Op-amp
U7	1.2V Regulator

Pinout Diagram

Latest Revision: Rev 0.1, 23-10-2023
Design by: Vishnu Mohanan
License: CC-BY-SA 4.0

The pinout diagram is based on the official documents. While we try our best to be accurate and up-to-date here, we can not guarantee correctness. We have seen boards with conflicting pinouts and pin labels. So please also double-check the pin assignments with that from the official documentation. If you find any errors, please let us know in the comments.

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Pin Reference

[TODO]

THEJAS32 SoC

Specifications

The key specs of the THEJAS32 SoC are,

• 32-bit Single-core RISC-V
• Clock Speed: 100 MHz
• 256 KB SRAM
• Upto 16 MBit Flash
• 8x PWM pins
• 4x Analog input pins
• 3x SPI
• 3x UART
• 2x I2C
• Upto 25 GPIOs
• Input Voltage: 7-12V
• DC Current per I/O Pin: 12 mA
• IO Voltage: 3.3 V
• Package: LQFP-128

The key features of the VEGA ET1031 processor core are,

• RISC-V (RV32IM) Instruction Set Architecture
• 3-stage in-order pipeline implementation
• Harvard architecture (separate instruction and data buses)
• High-performance multiply/divide unit
• Configurable AXI4 or AHB external interface
• Optional MPU (Memory Protection Unit)
• Platform Level Interrupt Controller
  • Up to 127 IRQs
  • Low interrupt latency
• Vectored interrupt support
• Advanced Integrated Debug Controller
• Debug extension allowing Eclipse debugging via a GDB–openOCD–JTAG connection

Pinout

Pin #	Pin Name	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	Heartbeat 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.
29	TJTAGTRST	JTAG TRST. Connect to GND through a 1K resistor.
30	TSTMODE	Test mode select. Connect to GND through a 1K resistor.
31	IIC2SDA	I2C 2 Serial Data.
32	IIC2SCL	I2C 2 Serial Clock.
33	IIC0SCL	I2C 0 Serial Clock.
34	IIC0SDA	I2C 0 Serial Data.
35	PVSSC14	Ground reference for logic.
36	PVDDC14	Positive supply for logic. Connect to 1.2V supply.
37	PVDDIO17	Positive supply for IO pins. Connect to 3.3V supply.
38	PVSSIOC17	Ground reference for IO pins.
39	SPI1CSN	SPI 1 Chip Select.
40	SPI1CLK	SPI 1 Clock.
41	SPI1MISO	SPI 1 Master In Slave Out.
42	SPI1MOSI	SPI 1 Master Out Slave In.
43	RSTIN	Reset.
44	CLKSYS	System Clock.
45	URT1SOUT	UART 1 Serial Out/Transmit.
46	PVDDIO15	Positive supply for IO pins. Connect to 3.3V supply.
47	PVSSIOC15	Ground reference for IO pins.
48	PVSSC12	Ground reference for logic.
49	PVDDC12	Positive supply for logic. Connect to 1.2V supply.
50	URT1SIN	UART 1 Serial Receive.
51	GPIO0(15)	General purpose IO.
52	GPIO0(14)	General purpose IO.
53	GPIO0(13)	General purpose IO.
54	GPIO0(12)	General purpose IO.
55	GPIO0(11)	General purpose IO.
56	PVSSC11	Ground reference for logic.
57	PVDDC11	Positive supply for logic. Connect to 1.2V supply.
58	GPIO0(10)	General purpose IO.
59	PVDDIO13	Positive supply for IO pins. Connect to 3.3V supply.
60	PVSSIOC13	Ground reference for IO pins.
61	GPIO0(9)	General purpose IO.
62	GPIO0(8)	General purpose IO.
63	GPIO0(7)	General purpose IO.
64	GPIO0(6)	General purpose IO.
65	GPIO0(5)	General purpose IO.
66	GPIO0(4)	General purpose IO.
67	PVSSC9	Ground reference for logic.
68	PVDDC9	Positive supply for logic. Connect to 1.2V supply.
69	PVDDIO11	Positive supply for IO pins. Connect to 3.3V supply.
70	PVSSIOC11	Ground reference for IO pins.
71	GPIO0(3)	General purpose IO.
72	GPIO0(2)	General purpose IO.
73	GPIO0(1)	General purpose IO.
74	GPIO0(0)	General purpose IO.
75	PWM(7)	Pulse Width Modulation.
76	PWM(6)	Pulse Width Modulation.
77	PWM(5)	Pulse Width Modulation.
78	PVSSC7	Ground reference for logic.
79	PVDDC7	Positive supply for logic. Connect to 1.2V supply.
80	PWM(4)	Pulse Width Modulation.
81	PWM(3)	Pulse Width Modulation.
82	PWM(2)	Pulse Width Modulation.
83	PVDDIO8	IO Power Supply VDD pin.
84	PVSSIOC8	Ground reference for IO pins.
85	PWM(1)	Pulse Width Modulation.
86	PWM(0)	Pulse Width Modulation.
87	SPI0MOSI	SPI 0 Master Out Slave In.
88	PVSSC6	Ground reference for logic.
89	PVDDC6	Positive supply for logic. Connect to 1.2V supply.
90	SPI0MISO	SPI 0 Master In Slave Out.
91	SPI0CLK	SPI 0 Clock.
92	SPI0CSN	SPI 0 Chip Select.
93	PVDDIO6	Positive supply for IO pins. Connect to 3.3V supply.
94	PVSSIOC6	Ground reference for IO pins.
95	IIC1SDA	I2C 1 Serial Data.
96	IIC1SCL	I2C 1 Serial Clock.
97	SPI2MOSI	SPI 2 Master Out Slave In.
98	SPI2MISO	SPI 2 Master In Slave Out.
99	PVDDC4	Positive supply for logic. Connect to 1.2V supply.
100	PVSSC4	Ground reference for logic.
101	SPI2CLK	SPI 2 Clock.
102	SPI2CSN	SPI 2 Chip Select.
103	PVSSIOC4	Ground reference for IO pins.
104	PVDDIO4	Positive supply for IO pins. Connect to 3.3V supply.
105	URT2SIN	UART 2 Serial In Receive.
106	URT2SOUT	UART 2 Serial Out / Transmit.
107	URT0SIN	UART 0 Serial In Receive.
108	URT0SOUT	UART 0 Serial Out / Transmit.
109	GPIO1(15)	General purpose IO.
110	GPIO1(14)	General purpose IO.
111	GPIO1(13)	General purpose IO.
112	PVDDC2	Positive supply for logic. Connect to 1.2V supply.
113	PVSSC2	Ground reference for logic.
114	PVSSIOC2	Ground reference for IO pins.
115	PVDDIO2	Positive supply for IO pins. Connect to 3.3V supply.
116	GPIO1(12)	General purpose IO.
117	GPIO1(11)	General purpose IO.
118	GPIO1(10)	General purpose IO.
119	GPIO1(9)	General purpose IO.
120	GPIO1(8)	General purpose IO.
121	GPIO1(7)	General purpose IO.
122	GPIO1(6)	General purpose IO.
123	PVSSIOC0	Ground reference for IO pins.
124	PVDDIO0	Positive supply for IO pins. Connect to 3.3V supply.
125	PVDDC0	Positive supply for logic. Connect to 1.2V supply.
126	PVSSC0	Ground reference for logic.
127	GPIO1(5)	General purpose IO.
128	GPIO1(4)	General purpose IO.

Links

1. Aries V3 Product Page – C-DAC
2. Aries V3 Datasheet [PDF]
3. THEJAS32 SoC Borchure [PDF]
4. VEGA User Guide
5. VEGA SDK User Guide
6. C-DAC – Official Website

Short Link

1. Short URL to this page – https://www.circuitstate.com/ariesv3pins