Read Sharp XE-A213 (serv.man4) Service Manual online
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.
Wait setting is shown below.
3-3. WAIT SETTING
CPU
RENESAS M30245M8
(USB CONTROLLER BUILT-IN)
(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)
(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)
(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
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
Signal=1
8K
8K
32K
64K
64K
64K
X 7
X 7
㪙㫃㫆㪺㫂㩷
㫌㫅㪼㫈㫌㪸㫃㩷
㪸㫉㪼㪸
㫌㫅㪼㫈㫌㪸㫃㩷
㪸㫉㪼㪸
RAMBANK
Signal=0
Signal=0
00000h
00400h
01800h
04000h
08000h
28000h
30000h
40000h
40000h
80000h
FFFFFh
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