ra8806 RAIO Technology Inc., ra8806 Datasheet - Page 57
ra8806
Manufacturer Part Number
ra8806
Description
Two Layers Character/graphic Lcd Controller
Manufacturer
RAIO Technology Inc.
Datasheet
1.RA8806.pdf
(184 pages)
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Preliminary Version 1.2
RA O
i
TECHNOLOGY INC.
2. Hardware Method:
(1) Flowchart:
Enable Key Scan ( KS )
( REG[A0h] B7 = 1 )
Enable KS INT Mask
( REG[0Fh] B5 = 1 )
Other Functions
Start
Ext. INT Event
Figure 6-24 : Key-Scan Flowchart (2)
ISR Termination
57/184
REG[A3h], REG[A4h] )
( REG[0Fh] B0 = 0 )
( REG[0Fh] B1 = ? )
Two Layers Character/Graphic LCD Controller
( Read REG[A2h],
Check KS Status
Execute Function
Clear KS Status
Read Key Code
ISR
1
0
Other INT Function
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RA8806
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