LSI-Robway RCI-1550 HRT, Instruction Manual

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6.8.2 CPU Section
The processor is an 8051 derivative which contains a number of enhancements over the
standard 8051, including an on-board 10 bit ADC. For most applications this degree of
resolution is more than adequate.
The data memory is in the form of a single package which contains the memory device with
real time clock (RTC) and integral lithium battery. This package has a guaranteed memory
retention of 10 years, and when flat the whole package must be replaced.
The program memory may reside in either a 64kB EPROM or the Expansion EPROM
package labelled as U5 (refer to the PCB overlay). When the program has been put into U5, it
will be labelled with the application WA number, otherwise it will be labelled with an ID
number. When it is labelled with a WA number, there must be no EPROM loaded in location
U8 otherwise damage to the processor circuitry will result. The Expansion EPROM package
must only be removed using the correct extraction tool otherwise either the package or the
socket may be damaged.
The high capacity Flash memory has been added to the 1550 to contain three main blocks of
information, being Load-charts, Load Moment (LM) calibration tables and Data-logging. The
memory is contained in two plug-in SIMM cards and depending on the application, any
number of these may be installed. Refer to the relevant software configuration sheets for more
details.
The SIMM cards can only be inserted one way, however care must be take during installation
and removal. It is essential that the SIMM cards are installed in the correct sockets and that
the correct sequence is followed.
To install a SIMM card, simply push the card into the socket at an angle of approximately 45
degrees (with the components facing toward the centre of the main circuit board). Once the
gold pads on the leading edge of the card have entered the socket, gently push the card into
the socket while rotating it to a vertical position. Installation is complete when the retaining
clips on each end of the socket have captured the edges of the board and have fully returned to
their original position.
To remove a SIMM card simply push the retaining clips at each end of the socket outwards
until the SIMM card springs away from its vertical position. The card can then be gently
withdrawn from the socket.
6.8.2.1 Specifications
Processor: 8051 derivative, operating at 18.4320MHz
Data Memory: 32kB of battery backed non-volatile SRAM
Program Memory: 64kB EPROM for program memory, expandable to 256kB
File : 1550-Telescopic-HRT.DOC
Issue Date: - 01/08/05