RA8835A
Version 1.0
Dot Matrix LCD Controller
5-2 RA8835A Pin Summary
Number
RA8835AP3N RA8835AP4N
Name
Type
Description
VA0 to
VA15
27 to 28
30 to 43
1 to 6
50 to 59
Output
VRAM address bus
7
8
9
Output
Output
Output
VRAM write signal
Memory control signal
VRAM read signal
44
45
VWR
VCE
VRD
46
47
10
Input
—
Reset
RES
NC
28, 48, 49
11, 12, 60
No connection
8080 family: Read signal 6800 family:
Enable clock (E)
RD
50
51
13
14
Input
Input
8080 family: Write signal
6800 family: R/ W signal
WR
SEL2
SEL1
XG
52
53
54
55
15
16
17
18
Input
Input
Input
8080 or 6800 family interface select
8080 or 6800 family interface select
Oscillator connection
XD
Output
Oscillator connection
CS
19
Input
Chip select
56
57
58
A0
VDD
20
21
Input
Supply
Data type select
2.7 to 5.5V supply
59 to 60
1 to 6
D0 to D7
22 to 29
30 to 33
Input/output Data bus
XD0 to
XD3
XECL
XSCL
VSS
LP
7 to 10
Output
X-driver data
11
12
13
14
15
34
35
36
37
38
Output
Output
Supply
Output
Output
X-driver enable chain clock
X-driver data shift clock
Ground
Latch pulse
Frame signal
WF
Power-down signal when display is
blanked
YDIS
16
39
Output
YD
17
18
40
41
Output
Output
Scan start pulse
Y-driver shift clock
YSCL
VD0 to
VD7
19 to 26
42 to 49
Input/output VRAM data bus
RAiO TECHNOLOGY INC.
www.raio.com.tw
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RAIO [ RAIO TECHNOLOGY INC. ]
