TDP-643R PLUS BAR CODE PRINTER
SERVICE MANUAL
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3.3 Reset Circuit
Fig. 3.3 Reset Circuit
This is the reset circuit .The TS809CXA IC outputs the system reset signal of
“LOW” when the driving voltage is lower than 4.63V (Typical).
3.4 Memory System
Fig. 3.4 FLASH ROMS and DRAM Diagram
This is the memory circuit. The U8 is 2M Byte FLASH ROM and U10 is 2M Byte
DRAM.
