Sharp ZQ-5000 Service Manual page 3

Terminal No. Signal name
89
90
92
93
94
95
96
97
98
99 El
100 EO
2. LCD drivers LH5073A and LH5074F
LCD drivers LH5073A and LH5074F, as display common drivers,
respectively include 32 drive circuits. The display duty is 1132. As
display segment drivers, they include 98 drive circuits and store 8bit
parallel display data sent from a microcomputer into their internal
display RAM to generate liquid crystal drive signal. One bit data of the
disply RAM corresponds to one dot ON/OFF of the liquid crystal
panel.
ON, Data I" : OFF
Display duty: l/32
Display data read/write, display ON/OFF, address set
163 pin film
LH5073 is equipped with an internal oscillation circuit and aninter-
LH5074 has no internal oscillation circuit (Synchronization signal
is inputted from LH5073A), and no booster circuit (Voltageis sup-
Input
Input
Low battery control signal
output
output
Multi-language select signal
Not used.
Multi-language select signal
output
RTC serial clock sianal
RTC serial IN signal
Input
RTC timer reset siqnal
output
RTC control signal
Descriptions
ZQ-5200