User manual

RS232-ADC16/24
1 Features
● C8051F350/C8051F352 microcontroller at 3 – 49 Mhz
● RS232 interface
● Eight analog 16/24-bit inputs
● Eight digital 3.3V IOs (5V tolerant)
● Supply voltage range from 4.5V – 15V (absolut max. 20V)
● Provides 3.3V power supply for sensors
● Seperated analog ground
● Extended temperature range (-40°C – 85°C)
● Small instruction set
● Recalibration possible
● Access via C-library
2 Introduction
RS232-ADC16/24 device is designed to give simple access to external sensors
and peripherals over a standard RS232 connection. There is no need for any
additional drivers when using Windows, DOS or Linux systems. Microcontroller
only need a simple implementation of their UART interface.
Instructions send to the device have an human readable form allowing manual
traffic checking for debugging proposes. To integrate RS232-ADC16/24 into
your application, a C-library is provided with the device bearing the work of
protocol parsing and packet construction.
The device comes in two versions, one with 16-bit and one with 24-bit ADC
channels. These versions are named respectively to their ADC channel
resolution RS232-ADC16 and RS232-ADC24.
This document contains information about hardware issues, the software
protocol and resulting register mappings. It provides extra information for
firmware version 1.11.
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