LC75817E Datasheet, PDF (28/43 Pages) Sanyo Semicon Device – 1/8 to 1/10 Duty Dot Matrix LCD Display Controller/Driver with Key Input Function

V_DD
V_LCD
t1 t2
VDET
LC75817E, 75817W
t3 t4
VDET
Instruction execution
Initial state settings
Key scan
Disabled
General-purpose
output ports
Fixed at the low level (V_SS)
Display state
Execution enabled
Can be set to either the high (V_DD) or low (V_SS) level.
Display off
Display on
Display off
“Set key scan output “Set general-purpose
state” instruction output port state”
execution
instruction execution
“Display on/off control”
instruction execution
(Turning the display on)
”Display on/off control“
instruction execution
(Turning the display off)
• t1 ≥ 1 ms (Logic block power supply voltage V_DD rise time)
• t2 ≥ 0 ms
• t3 ≥ 0 ms
• t4 ≥ 1 ms (Logic block power supply voltage V_DD fall time)
• Initial state settings
Set display technique
DCRAM data write
ADRAM data write (If the ADRAM is used.)
CGRAM data write (If the CGRAM is used.)
Set AC address
Set display contrast (If the display contrast adjustment circuit is used.)
Figure 3
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