Memory; Lcd Graphics Display Interface - GE MAC 1200 Service Manual

Memory

Program Memory
DRAM
Patient ECG Memory
Configuration Memory

LCD Graphics Display Interface

Controller Interface
2-12
Functional Description: PCB Control CS_CI
The complete memory of the MAC 1200 resting ECG analysis system is located
on the PCB Control CS_C(I). The software of the device can be loaded through the
JTAG port during the production process, or for service purposes with the
appropriate programming software through the RS-232 interface.
Type: Flash, +3.3 V supply
Organization: 2Mbit X 16, 4Mbyte
Wait states: 1 wait state
Type: SDRAM, +3.3 V supply
Organization: 4Mbit X 16, 8Mbyte
Wait States: 0 wait state
Type: Buffered SRAM, +3.3 V supply
Organization: 512Kwords X 16 bits
Wait States: 1 wait state
The configuration memory is part of the program memory Flash. With special
hardware and software protection facilities, write access to the Flash is only possible
in the defined configuration memory of the Flash. Thus an external configuration
memory like an EEPROM is not required.
The LCD controller is now implemented in FPGA.
For the digital control signals, delivered from the MPC855T, only an output driver is
required.
MAC 1200 resting ECG analysis system
2012250-095
Revision D