ra8806 RAIO Technology Inc., ra8806 Datasheet - Page 53

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

Preliminary Version 1.2
RAiO
TECHNOLOGY INC.
When the Multi-Key function is applied, the pressed keys will be saved in the system each with KSDR0,
KSDR1 and KSDR2. Note that the priority of keys saving is determined on the value size of Key-code,
not the orders of keys pressing, please refer to the following example:
Press the Key-code in turn of 0x44, 0x00 and 0x22, press Multi-Key at the same time, the Key-code will
be saved in KSDR:
The definition of Key-code is described in the registers KSDR0 ~ 2 [A2h ~ A4h]. The basic features of
above Key-Scan settings are introduced as follows:
KSCR1
KSCR2
KSDR0
KSDR1
KSDR2
KSDR0 = 0x00
KSDR1 = 0x22
KSDR2 = 0x44
INTR
Reg.
Bit_Num
Bit [5:4]
Bit [2:0]
Bit [3:2]
Bit [1:0]
Bit [7:0]
Bit 7
Bit 6
Bit 3
Bit 5
Bit 1
Table 6-15 : Key Number Mapping Table (Long Key)
COL #
Key-Scan enable bit
Key-Scan size selection
Key-Scan sampling times setting
Long key function enable
Key-Scan scan frequency setting
long key timing adjustment
Pressed key number
Key code for pressed key
Key-Scan interrupt enable
Key-Scan Interrupt Status bit
0
1
2
3
4
5
6
7
80h
90h
A0h
B0h
C0h
D0h
E0h
F0h
0
81h
91h
A1h
B1h
C1h
D1h
E1h
F1h
1
Table 6-16
Description
82h
92h
A2h
B2h
C2h
D2h
E2h
F2h
53/184
2
83h
93h
A3h
B3h
C3h
D3h
E3h
F3h
ROW #
3
Two Layers Character/Graphic LCD Controller
84h
94h
A4h
B4h
C4h
D4h
E4h
F4h
4
85h
95h
A5h
B5h
C5h
D5h
E5h
F5h
5
86h
96h
A6h
B6h
C6h
D6h
E6h
F6h
6
87h
97h
A7h
B7h
C7h
D7h
E7h
F7h
7
REG[A2h ~ A4h]
Reference
REG[A0h]
REG[A1h]
REG[0Fh]
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RA8806