Zest_Interface_RS232
Overview
The Zest_Interface_RS232 is an electronics development board for 6TRON opensource platform based on MAX3227 transceiver from Texas instrument.
The MAX3227 is a full-Duplex RS-232 transceiver with 1 Driver and 1 Receiver. It provides an electrical interface between an asynchronous communication controller and the serial-port connector.
The chip includes an Auto-Powerdown feature when the interface cable is disconnected or the distant transceiver is inactive for 30s.
The board operates at data-signaling rates up to 1 Mbit/s in normal operating mode.
The Zest_Interface_RS232 can be used as a RS232 interface to devices, systems and sensors communicating with low power over a long distance.
Specifications
MAX3227:
- RS-232 full duplex transceiver
- Single channel
- Drv/Rcvr Operates at up to 1Mbit/s
- Auto-Powerdown
- Detects active remote transceiver (nINVALID)
| Feature | Details |
|---|---|
| ADP7118 | Low-noise linear LDO regulator Output: 3.3V / 200mA |
| Connectivity | 80-pin 6TRON header 4-pin 2-row 1.5mm-pitch JST header (power and data) 4-pin 1-row 2.54mm-pitch header for prototyping |
| Board size | 80 x 39 mm |
| Power Supply | 3.3 to 12V from stack, 3.3V internal |
| Category | Zest_Interface |
Block Diagram
The graphics below gives an overview of the board features and connections.
80-pin 6TRON header
This table shows how the pinout on Zest_Interface_RS232 corresponds to the pinout on the 6TRON BUS connector (the latter shown in the two middle columns).
| Description | 6TRON function | Pin number | Pin number | 6TRON function | Description |
|---|---|---|---|---|---|
| - | VJACK | 1 | 2 | VJACK | - |
| - | VJACK | 3 | 4 | VJACK | - |
| - | VHV | 5 | 6 | VHV | - |
| - | VHV | 7 | 8 | VHV | - |
| - | DIO8 | 9 | 10 | VIN_EN | - |
| - | DIO7 | 11 | 12 | DIO9 | - |
| - | DIO6 | 13 | 14 | DIO10 | - |
| - | MD | 15 | 16 | DIO11 | - |
| - | DIO5 | 17 | 18 | DIO12 | UART Zest to core (alternate) |
| Ground | GND | 19 | 20 | GND | Ground |
| Ground | GND | 21 | 22 | GND | Ground |
| 6TRON Stack Power Supply | VIN | 23 | 24 | VIN | 6TRON Stack Power Supply |
| 6TRON Stack Power Supply | VIN | 25 | 26 | VIN | 6TRON Stack Power Supply |
| - | VB_EN | 27 | 28 | DIO13 | Valid input (alternate) |
| - | VB_OUT | 29 | 30 | DIO14 | Ready (alternate) |
| - | DAC1 | 31 | 32 | DIO15 | Force ON (option) |
| - | ADC4 | 33 | 34 | DIO16 | Force OFF (option) |
| - | ADC3 | 35 | 36 | DIO17 | - |
| - | ADC2 | 37 | 38 | DIO18 | UART core to Zest (alternate) |
| - | ADC1 | 39 | 40 | GND | - |
| - | EXT_NRST | 41 | 42 | GND | - |
| Ready | DIO4 | 43 | 44 | VREF | - |
| Valid input | DIO3 | 45 | 46 | DIO19 | - |
| Force OFF (option) | DIO2 | 47 | 48 | DIO20 | - |
| Force ON (option) | DIO1 | 49 | 50 | DIO21 | - |
| - | WKUP | 51 | 52 | DIO22 | - |
| - | ICAPT | 53 | 54 | DIO23 | - |
| - | PWM3 | 55 | 56 | DIO24 | - |
| - | PWM2 | 57 | 58 | DIO25 | - |
| - | PWM1 | 59 | 60 | DIO26 | - |
| - | SPI1_SS | 61 | 62 | DIO27 | - |
| - | SPI1_SCK | 63 | 64 | DIO28 | - |
| - | SPI1_MISO | 65 | 66 | DIO29 | - |
| - | SPI1_MOSI | 67 | 68 | DIO30 | - |
| UART core to Zest | UART1_TX | 69 | 70 | DIO31 | - |
| UART Zest to core | UART1_RX | 71 | 72 | DIO32 | - |
| - | I2C1_SDA | 73 | 74 | DIO33 | - |
| - | I2C1_SCL | 75 | 76 | DIO34 | - |
| - | CAN1_TX | 77 | 78 | DIO35 | - |
| - | CAN1_RX | 79 | 80 | DIO36 | - |
Software Support
The Zest_Radio_RS232 provides a demo example developed using MBed Os. The board can run on Zest Core development boards.
Environmental impact
The Eco score of the Zest_Interface_RS232 is expressed in points representing the environmental impact of an average European per year.
Eco-score details
BOM
| Component | data | unit |
|---|---|---|
| Passive electronic component | 0,0483 | g |
| Active electronic component | 0,0162 | g |
| LED | 0,00 | g |
| Other component | 0,00 | g |
| Connectors Switchs | 2,79 | g |
| Logique type integrated circuit | 0,14 | g |
| Memory type integrated circuit | 0 | g |
| PCB | 3120 | mm² |
Consumption
| Low voltage electricity voltage France | ||
|---|---|---|
| Current | 20 | mA |
| Supply voltage | 5 | V |
| Autonomy | 100 | h |
| % use | 75 | % |
| Power | 0,0075 | kWh |