Sharp ER-A750 Service Manual page 52

2) Block diagram
IOCS,IOWR,IORD
MEMCS,MEMWR,MEMRD
AB0~AB15
BHE
DB0~DB15
3) Pin configuration
80
8 1
VD 11
VD12
VD 13
VD14
VD 15
LCDENB
XSCL
L P
W F
YD
SED1351F0A
UD0
UD1
UD2
UD3
LD0
LD1
LD2
LD3
O S C1
O S C2
100
1
RESET
READY
MPUSEL,MPUCLK
I/O
CONTROL CIRCUIT
ADDRESS BUFFER
DATA BUFFER
BASIC TIMING
GENERATING CIRCUIT
OSCILLATION
CIRCUIT
OSC1 OSC2
5 1
5 0
3 1
3 0
CONTROL REGISTER
16bit
REFRESH VRAM
ADDRESS CONTROL
COUNTER
CIRCUIT
MPX
VA0~VA15 VWE
VCS0~VCS4
VA 3
VA2
VA 1
VA0
VWE
DB15
DB14
DB13
DB12
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB 3
DB 2
DB 1
7 – 22
R1
LCDENB
R15
XSCL
DISPLAY
LP
TIMING
YD
CONTROL
WF
CIRCUIT
DISPLAY DATA
UD0~UD3
CONTROL
LD0~LD3
CIRCUIT
MPX
VD0~VD15