![background image](http://html.mh-extra.com/html/sharp/up-3300/up-3300_service-manual_373322042.webp)
2) Block diagram
DROS1Z
RASPN1
IPLONZ
VMEMZ
RASPN1E
RASPN12Z
RASPN2
RASPN2E
D0-D7
WRZ
RDOZ
WROZ
PHAI
RESETZ
RESZ
RDZ
IRRXZ
RCRXZ
UASCK
UARXZ
UATXZ
IRTX
VRESC
POFFZ
ASZ
EXWAITZ
WAITZ
MCRINT
MCRINTZ
VWAITZ
CLS1
RCP1
RDD1
CLS2
RCP2
RDD2
TPTRDYZ
TPTXD
TPRXD
TPCKI
TPRDY
TPRRDYZ
SSPRQZ
DAX2
TXDI
SCKI
RXDI
DAX1
SCK1
STH2
HTS2
SCK2
STH2
HTS1
INT1Z
INT2Z
INT3Z
EXINT0Z
EXINT1Z
EXINT2Z
INT4Z
TESTZ
TEST0
TEST1
TEST2
MD0
MD1
IRQ02
EXINT3Z
DECODE
BUFFER
READ
WRITE
CONTROL
WAIT
CONTREOL
MCR I/F
USART
X2
TOUCH PANEL I/F
USART
SSP COMPARISON
REGISTER
BAR
IR
CONTROL
SERIAL
CHANNEL
SELECT
(for CKDC)
INT
CONTROL
TEST
LOGIC
M P C A 8
A23-A0
7 – 6