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3. CIRCUITRY
3-1. SYATEM BLOCK DIAGRAM
The terminal that wses 16 bits single chip microcomputer. The CPU has 256K Flash ROM and 4K bytes of internal
RAM.
External memory are 128K bytes SRAM 2 pcs, Flash memory (NV bit-image) and Character generator.
SRAM
128K x 2 bytes
FLASH ROM
512K bytes
Motor
Drive
L6219
Character
Generator
Printer
Head
Motor
DIP SW
74LV541
Driver
MB3853
Auto
Cutter
Driver
LED
Panel SW
Decode
74LV139
Driver
TD62308
Drawer
Unit
Near
End sens.
Serial
Interface
RS232C
HIN232CB
CPU
HD64F7045
VP VCC RESET
+24V
Power Supply
Clock
6.754MHz