ra8835 Topway Display, ra8835 Datasheet - Page 11

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

6. Instruction Set
RAiO TECHNOLOGY INC.
Version 1.7
6-1 The Command Set
Notes:
1. In general, the internal registers of the RA8835 series are modified as each command parameter is
2. APL and APH are 2-byte parameters, but are treated as two 1-byte parameters.
System
Control
Display
Control
Drawing
Control
Memory
Control
input. However, the microprocessor does not have to set all the parameters of a command and may
send a new command before all parameters have been input. The internal registers for the
parameters that have been input will have been changed but the remaining parameter registers are
unchanged. 2-byte parameters (where two bytes are treated as 1 data item) are handled as follows:
Class
a. CSRW, CSRR: Each byte is processed individually. The microprocessor may read or write
b. SYSTEM SET, SCROLL, CGRAM ADR: Both parameter bytes are processed together. If
SYSTEM
SET
SLEEP IN
DISPLAY
ON/OFF
SCROLL
CSRFORM
CGRAM
ADR
CSRDIR
HDOT SCR
OVLAY
CSRW
CSRR
MWRITE
MREAD
just the low byte of the cursor address.
Command
the command is changed after half of the parameter has been input, the single byte is
ignored.
RD WR A0 D7 D6 D5 D4 D3 D2 D1 D0
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
Table-1: Command Set
1
1
1
1
1
1
1
1
1
1
1
1
1
Code
0
0
0
0
0
0
0
0
0
0
0
0
0
11/86
0
1
1
0
1
1
0
1
1
0
0
0
0
0
0
1
0
1
1
1
1
1
0
0
0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
CD
0
1
0
0
0
0
1
1
1
1
1
1
1
CD
D
0
0
1
0
1
0
0
1
0
1
0
1
Hex
58,
5D
5C
4C
4F
5A
5B
40
53
59
44
46
47
42
43
to
Initialize device and
display
Enter standby mode
Enable and disable
display and display
flashing
Set display start
address and display
regions
Set cursor type
Set start address of
character generator
RAM
Set direction of cursor
movement
Set horizontal scroll
position
Set display overlay
format
Set cursor address
Read cursor address
Write to display
memory
Read from display
memory
Dot Matrix LCD Controller
Description
Command
www.raio.com.tw
RA8835
No. of
Bytes
Parameters
Command
10
—
—
0
2
2
2
8
1
2
0
1
1
Read
Section
9-2-1
9-2-2
9-3-1
9-3-2
9-3-3
9-3-6
9-3-4
9-3-7
9-3-5
9-4-2
9-5-1
9-5-2
9-r1