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UP-3500 (serv.man29). UP3500 Hardware Service Manual - Sharp EPOS Service Manual (repair manual). Page 18

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UP-3500 (V)
HARDWARE DESCRIPTION
– 16 –
CHAPTER 7.  HARDWARE DESCRIPTION
1. BLOCK DIAGRAM
CPU  clock
㧦 200MHz
 
Bus clock
㧦 33MHz
 
Peripheral clock
㧦 16.6667MHz
Bus endian setting 㧦 Little endian
Controller
Synchronization type serial
Synchronization type 
serial
Synchronization type serial
Synchronization type serial
Async type serial
Bus connect
Rear display
Interface
Contactless clerk 
Contactless clerk key 
Ethernet Controller
etc.
Key
UART
UP-P20DP
OPTION MCR
UP-I20DP
INVERTER
Flash ROM
4MB (NOR)
SRAM
4MB
˜16
R
A
M
C
N
50
LCDC 
VRAM
Contactless clerk
8MB
Operator Display
12.1inch
TFTLCD
Use by switching the Flash ROM
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