User’s Manual
17
3. S
UBSYSTEMS
Chapter 3 describes the principal subsystems for the OP7200.
• Analog Features (OP7200 only)
• Memory
• Liquid Crystal Display Controller
• Keypad
Figure 5 shows these Rabbit-based subsystems designed into the OP7200.
Figure 5. OP7200 Subsystems
The memory and microprocessor are located on the RabbitCore module. The RCM2200
module is used on the OP7200. If you have more than one OP7200 or other Rabbit Semi-
conductor products built around RabbitCore modules, take care not to swap the RabbitCore
modules since they contain system ID block information and calibration constants that are
unique to the board they were originally installed on. It is a good idea to save the calibration
constants should you need to replace a RabbitCore module in the future. See Section 4.3.8,
“Using System Information from the RabbitCore Module,” for more information.
Ethernet
SRAM
Flash
11 MHz
osc
32 kHz
osc
RabbitCore Module
CPLD
RABBIT
2000
RS-232
RS-485
A/D
Converter
Digital
Input
Digital
Output
Interface to
LCD/Keypad
Touch-
screen
Controller
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