Sharp ZQ-5000, Руководство по обслуживанию

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ZQ-5200
Terminal No. Signal name
Descriptions
89 Input
DR signal (Data set ready)
90 Input
CD signal (carrier detection)
output
Low battery control signal
92 output
93
Multi-language select signal
Open; Short between 93 pin and 95 pin)
94 Not used.
95 output
96
Multi-language select signal
Open, Short between 93 pin and 95 pin)
RTC serial clock
97 Input
98
RTC serial IN signal
RTC timer reset
99 El output
RTC serial OUT signal
100 EO
Output RTC control signal
2. LCD drivers and
LCD drivers and as display common drivers,
respectively include 32 drive circuits. The display duty is 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
panel.
Common driver section
Common output impedance: ohm (Max.)
Built-in common liquid crystal display drive circuit:
Segment driver section
Segment output impedance: ohm (max.)
Direct display of RAM data by built-in display RAM: Data
ON, Data OFF
Display RAM capacity:
Arithmetic RAM capacity: (960bit)
parallel interface (Data bus, address bus)
Built-in segment liquid crystal display drive circuit:
Display duty:
Instruction function
Display data read/write, display ON/OFF, address set
C-MOS process
Power source
14V
PKG
163 pin film
Difference between and
LH5073 is equipped with an internal oscillation circuit and
booster circuit.
LH5074 has no internal oscillation circuit (Synchronization signal
is inputted from
and no booster circuit
from
The control signal array of is contrary to that of