ra8835a RAIO Technology Inc., ra8835a Datasheet - Page 32

• Manufacturer Part Number: ra8835a
• Description: Dot Matrix Lcd Controller
• Manufacturer: RAIO Technology Inc.

RAiO TECHNOLOGY INC.
Version 1.0
6-4 Drawing Control Commands
6-4-1 CSRW
6-4-2 CSRR
The 16-bit cursor address register contains the display memory address of the data at the cursor
position as shown in Figure 6-22. Note that the microprocessor cannot directly access the display
memory. The MREAD and MWRITE commands use the address in this register.
The cursor address register can only be modified by the CSRW command, and by the automatic
increment after an MREAD or MWRITE command. It is not affected by display scrolling. If a new
address is not set, display memory accesses will be from the last set address or the address after
previous automatic increments.
Read from the cursor address register. After issuing the command, the data read address is read
twice, for the low byte and then the high byte of the register.
P1
P2
C
MSB
P1
P2
C
MSB
A15
A7
0
A15
A7
0
A14
A6
1
Figure 6-22: CSRW Parameters
A14
Figure 6-23: CSRR Parameters
A6
1
A13
A5
A13
0
A5
0
A12
A4
A12
A4
0
0
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A11
A11
A3
A3
0
0
A10
A2
A10
A2
1
1
A1
A9
1
A1
A9
1
A0
A8
0
A0
A8
LSB
1
LSB
(CSRH)
(CSRL)
(CSRH)
(CSRL)
Dot Matrix LCD Controller
RA8835A
www.raio.com.tw