ra8835 Topway Display, ra8835 Datasheet - Page 7

• Manufacturer Part Number: ra8835
• Description: Dot Matrix Lcd Controller
• Manufacturer: Topway Display

4. Package
5. Pin Descriptions
RAiO TECHNOLOGY INC.
Version 1.7
VDD
XD
CS
A0
D0
D1
D2
D3
D4
D5
D6
5-1 Pin Functions
Figure 4-1: RA8835P3N(QFP-60 Pin)
5-1-1 MCU Interface
60
1
5
Index
6
D0 to D7
Name
SEL1,
SEL2
Pin
RD
50
or
Date Code(Year 2005)
E
RAiO
RA8835P3N
10
05xx
MCU Data Bus.
Tristate input/output pins. Connect these pins to an 8- or 16-bit microprocessor bus.
MCU Interface Select.
The RA8835 series supports both 8080 family processors (such as the 8085 and
Z80®) and 6800 family processors (such as the 6802 and 6809).
SEL1 should be tied directly to VDD or VSS to prevent noise. If noise does appear on
SEL1, decouple it to ground using a capacitor placed as close to the pin as possible.
Read Control or Enable.
When the 8080 family interface is selected, this signal acts as the active-LOW read
strobe. The RA8835 series output buffers are enabled when this signal is active.
When the 6800 family interface is selected, this signal acts as the active-HIGH
enable clock.
Data is read from or written to the RA8835 series when this clock goes HIGH.
45
TM
SEL1
15
0
1
40
20
SEL2*
0
0
35
30
29
25
8080 family
6800 family
Interface
VA8
VA9
VA10
VA11
VA12
VA13
TEST
VA14
VA15
VD0
VD1
VD2
7/86
Function
VA15
VA14
VA13
VA12
VA11
VA10
VD3
VD2
VD1
VD0
VA9
VA8
VA7
VA6
NC
Figure 4-2: RA8835P4N (TQFP-60 Pin)
A0
A0
A0
46
60
45
1
Index
RA8835P4N
RAiO
RD
RD
E
Date Code(Year 2005)
Dot Matrix LCD Controller
05xx
TM
R/ W
WR
WR
www.raio.com.tw
RA8835
31
15
30
16
CS
CS
CS
XD3
D7
D6
D5
D4
D3
D2
D1
D0
VDD
A0
CS
XD
XG
SEL1