ra8806 RAIO Technology Inc., ra8806 Datasheet - Page 43

• Manufacturer Part Number: ra8806
• Description: Two Layers Character/graphic Lcd Controller
• Manufacturer: RAIO Technology Inc.

Preliminary Version 1.2
RAiO
TECHNOLOGY INC.
6-4-1 Auto Mode
TPCR1
TPCR2
TPXR
TPYR
TPZR
INTR
Reg.
Auto mode is the easiest way to implement touch panel application. Please refer to the flow chart
below.
(1) Flowchart:
Table 6-11 lists the used registers.
Bit_Num
Bit [7:0]
Bit [7:0]
Bit [3:2]
Bit [1:0]
Enable Touch Panel
( REG[C0h] B7 = 1 )
Enable TP INT Mask
( REG[C4h] B7 = 0 )
( REG[0Fh] B4 = 1 )
Bit 7
Bit 7
Bit 4
Bit 0
Other Functions
Set Auto Mode
Figure 6-19 : Auto Mode Flowchart for Touch Screen
Start
Ext. INT Event
EnableTouch Panel function
“Auto-Mode” or “Manual Mode” selection bit
Touch Panel Hardware Interrupt enable bit
Touch event status bit
Touch Panel SEG data MSB byte
Touch Panel COM data MSB byte
Touch panel COM data LSB 2bit
Touch panel SEG data LSB 2bit
Table 6-11
Description
ISR Termination
43/184
Two Layers Character/Graphic LCD Controller
REG[C2h], REG[C3h] )
Clear TP INT Status
( REG[0Fh] B0 = 0 )
( REG[0Fh] B0 = ? )
( Read REG[C1h],
Check INT Status
Execute Function
Read X, Y-axis
ISR
1
0
Reference
REG[C0h]
REG[C4h]
REG[C1h]
REG[C2h]
REG[C3h]
REG[0Fh]
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RA8806