参数资料
型号: LC75813E-E
厂商: ON Semiconductor
文件页数: 20/26页
文件大小: 0K
描述: IC LCD DISPLAY DRIVER 100QLP
标准包装: 50
系列: *
LC75813E, 75813T
The INH pin and Display Control
Since the IC internal data (1/3 duty: the display data D1 to D261 and the control data, 1/4 duty: the display data D1 to
D344 and the control data) is undefined when power is first applied, applications should set the INH pin low at the same
time as power is applied to turn off the display (This sets the S1/P1 to S8/P8, S9 to S86, COM1 to COM3, and
COM4/S87 to the V SS level.) and during this period send serial data from the controller. The controller should then set
the INH pin high after the data transfer has completed. This procedure prevents meaningless displays at power on. (See
Figures 3 and 4.)
Notes on the Power On/Off Sequences
Applications should observe the following sequences when turning the LC75813E and LC75813T power on and off.
? At power on: Logic block power supply (V DD ) on → LCD driver block power supply (V LCD ) on
? At power off: LCD driver block power supply (V LCD ) off → Logic block power supply (V DD ) off
However, if the logic and LCD driver block use a shared power supply, then the power supplies can be turned on and off
at the same time.
1. 1/3 duty
t2
t1
t3
VDD
VLCD
INH
VIL
tc
CE
D1 to D87
Display and control data transfer
VIL
Internal data P0 to P3
Undefined
Defined
Undefined
DR, DT, FC, SC, BU
Internal data (D88 to D174)
Internal data (D175 to D261)
Undefined
Undefined
Defined
Defined
Undefined
Undefined
Notes:
t1 ≥ 0
t2 > 0
t3 ≥ 0 (t2 > t3)
tc .......10 μ s min.
Figure 3
No. 7159-20/26
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