XE-A213 (serv.man4). XE-A213 Service Manual - Sharp ECR Service Manual (repair manual). Page 9

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XE-A203V/A213V
HARDWARE DESCRIPTION
– 7 –
CHAPTER 4. HARDWARE DESCRIPTION
1. BLOCK DIAGRAM
2. MEMORY MAP
3. CPU SETTING
3-1. OUTLINE
3-2. CLOCK
The main clock is set to 16MHz.
Wait setting is shown below.
3-3. WAIT SETTING
CPU
RENESAS M30245M8 
(USB CONTROLLER BUILT-IN) 
MEMORY
RAM 4Mbit SRAM 
ROM  4Mbit FLASH ROM 
PRINTER
THERMAL PRINTER M-T53 II
DISPLAY
FRONT
: LCD 16DIGITS 1LINE CHARACTER 
POPUP
: 7SEGMENT LED 7 DIGITS 
  (GREEN YELLOW)  
OSCILLATOR
16MHz
: MAIN CLOCK
32.768kHz
: SUB CLOCK
CPU+USB controller
 
 
Renesas
 
 
M30245M8
 
POPUP DISPLAY
 
(LED 7SEG)
 
FRONT DISPLAY
 
 (1line LCD)
 
PRINTER MOTOR DRV
 
PRINTER
KEY 
4Mbit Flash ROM 
4Mbit SRAM
 
MODE SW
DRAWER 
PRINTER HEAD IF 
 
RESETIC
   
USB CN  
DECODER 
BATTERIES
(3 PCS)
BUZZER  
WINDING MOTOR
 
 
5V
 
33V
24V
 
 
3.3VB
 
16MHz  
32.768
kHz
 
REGURATOR
 
KEY IF / POPUP DISPLAY IF 
VP (about 8V) 
VLED (5.7V)
Model
M30245M8
Internal RAM
5Kbyte
Internal ROM (mask)
64Kbyte
Operation clock
16MHz
Sub clock
32.768KHz
External data bus
8bit width fixed
CS0# (Flash ROM and external SRAM) 
2 wait
CS1# (Popup display, key return)
1 wait
CS2# (External SRAM image space)
2 wait
CS3# (Front display)
1 wait
㸣㪚㪧㪬 CS SIGNAL
SFR 
Internal RAM 
5KB 
INTERNAL RESERVED
AREA
SRAM
㩷physical address
FRONT DISP
 (R/W)
 
CS3 (16KB) 
00000h
08000h
CS2 IMAGE SPACE
 CS2 
(128KB) 
 
CS2 
IMAGE 
SPACE
(128KB IN SRAM512KB)
28000h
POPUP DISP(W) 
CS1 (32KB) 
/KEY RETURN(R) 
㪥㪦㪫㩷㪬㪪㪜㪛
40000h
EXTERNAL SRAM 512KB
(256KB ~ 2BANK)
7FFFFh
FLASH physical address
00000h
CS0 (832KB)
External FLASH 512KB 
7FFFFh
16K 
RAMBANK 
Signal=1
8K
8K
32K 
64K 
64K
64K 
X 7 
㪙㫃㫆㪺㫂㩷
㫌㫅㪼㫈㫌㪸㫃㩷
㪸㫉㪼㪸 
RAMBANK 
Signal=0 
00000h
00400h
01800h
04000h
08000h
28000h
30000h
40000h
80000h
FFFFFh
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