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The TDS2020F is a powerful
16-bit control computer. Despite the small size and low power consumption,
it is packed with important features that make it easy to use in
solving control and data collection problems.
Rapid application development is assured by the interactive nature
of development and debugging. A library of software provides instant
solutions to many application problems.
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l Data
Collection Module with removable Compact Flash or PCMCIA
card.
l High
performance multitasking 16-bit control computer.
l Unrivalled
documentation and technical support |
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Source
code is directly compiled into Flash-EEPROM non-volatile memory.
It is written in the interactive high level language Forth. With
the help of ready-made software modules, designs can be completed
in weeks, not months, even without a prior knowledge of Forth.
WHY FLASH?
Direct compilation to Flash-EEPROM is
convenient and avoids the cost and development cycle of a
PROM programmer. There is a further advantage-you can zap
the program remotely over a modem and recompile. Suppose
the TDS2020F were embedded in a vehicle or a pressurised
vessel, you could update the program without even removing
the computer.
Flash technology is used for data collection as
well as program memory. Fit a 512k byte Flash chip on the
TDS2020F board, or add a Compact Flash/PCMCIA adapter to
get hundreds of megabytes of Flash memory.
WHY FORTH?
The reason for programming card computers in Forth is
productivity-you get results faster with less cost. It is
closer to the machine than 'C' but is a higher-level language
than assembler. Unlike either, it is interactive, giving
quicker development. The multitasking Forth specially
written for the board gives easy access to all its features
and allows software to be written quickly. It is American
National Standard Forth with many extensions to exploit the
hardware features of TDS2020F. The 16k-byte Forth
includes LCD and keypad drivers, together with many other
utilities and a structured symbolic assembler.
You write programs in high-level language, mixing it with
assembler if required. More information about Forth. |
WHAT HARDWARE?
The TDS2020F is based on the Hitachi
H8/532 microprocessor There are 45k bytes of space
for your compiled program and up to 512k bytes of Flash
memory or battery-backed RAM to keep vital data while the
board is not working. This can be expanded to over a gigabyte
with plug-in PCMCIA or Compact Flash cards.
A Controller Area Network adapter (CAN
bus) allows fast interconnection of TDS2020F computers,
with a PC in the network if required. Both low level and
high level widely used CAN protocols are provided. The
board has between 26 and 41 Parallel I/Os depending on
the other options selected and there are two RS232
Serial Ports. The Analog
to Digital converter has eight channels of 10-bit resolution
(better than 1 in 1000) and there are three channels of
8-bit Digital to Analog (1
in 250). Additional features include four hardware Counter-Timers (three
are 16-bit), two separate Watchdog
Timers, non-volatile Time-of-day
Clock and Multitasking.
The single power supply draws 32mA with only 155µA
in a low power operational
mode for applications like datalogging.
The TDS2020F measures just 100 x 80mm, it has pin
headers for connection by ribbon cable; or simply use it
as a component inserted on a larger board. Another version
has a DIN41612 connector for use in a rack. Online TDS2020F Technical Manual. |
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