Circuitry; System Block Diagram - Casio UP-360 Service Manual

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.
DIP SW
Decode
74LV139
Serial
Interface
RS232C
SRAM
128K x 2 bytes
FLASH ROM
512K bytes
Character
Generator
74LV541
HIN232CB
VP
+24V
Clock
6.754MHz
Motor
Drive
L6219
Driver
CPU
MB3853
HD64F7045
Driver
Driver
TD62308
VCC RESET
Power Supply
— 8 —
Printer
Head
Motor
Auto
Cutter
LED
Panel SW
Drawer
Unit
Near
End sens.