ER-A280, ER-A280N, ER-A280F (serv.man5). ER-A280 Service Manual - Sharp ECR Service Manual (repair manual). Page 9

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ER-A280F/A280N (V)
HARDWARE DESCRIPTIONS
4 – 1
CHAPTER 4. HARDWARE DESCRIPTIONS
1. GENERAL DESCRIPTIONS OF HARDWARE
2. BLOCK DIAGRAM
Item
Specifications
CPU
MASK ROM built-in 16bit MPU
PRINTER
58mm wide line thermal printer
SRAM
MAX 8Mbit
ROM
For program
MAX 8Mbit
For E/J
-
For FISCAL
-
DISPLAY
MAIN
FSTN LCD 192 x 80 dot / White backlight
CUSTOMER
MAX 10 digits 7segment DISPLAY
KEY
MAX 70 keys (FLAT KEY) / 51 keys (NORMAL KEY)
DRAWER
Standard DRAWER
I/F
USB
-
SD
1
DRAWER
2
RS232
MAX 4 (D-Sub x2, RJ-45 x2)
EFT
1 (Exclusive use with RS232 D-Sub port, for UP-04EF)
 CPU
RENESAS
M16C/62P
22M6P-xxxFP(P)
 SRAM
 
 EFT
 UNIT
 
 
  
 
  
KEY
  
BOARD
SD
 CARD
 
 
 8bit Bus
 SIO
 GPIO
 SIO
 GPIO
 A/D
 GPIO
 A/D
 GPIO
 INT
 GPIO
7seg x
(For Europe:Option)
12MH
( I n t e r n a l   2 4 M H z )
32.768kHz
 GPIO
PRINTER
10MHz
 ROM
 
Power supply
Drawer
MEMORY BACKUP 
BATTERY
8Mbit
8Mbit  FLASH
D-Sub
Selector
7/8/10digits
Customer
Display
(LED)
Front
Display
(LCD)
192 x 80dots
Buffer
DRIVER
RS232
   D-Sub
DRIVER
RS232
   D-Sub
DRIVER
RS232
   D-Sub
DRIVER
RS232
G/A

Display

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