ra8806 RAIO Technology Inc., ra8806 Datasheet - Page 31
ra8806
Manufacturer Part Number
ra8806
Description
Two Layers Character/graphic Lcd Controller
Manufacturer
RAIO Technology Inc.
Datasheet
1.RA8806.pdf
(184 pages)
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Preliminary Version 1.2
RAiO
RS
ZCS1
ZWR
ZRD
DATA[7:0]
RS
ZCS1
ZWR
ZRD
DATA[7:0]
TECHNOLOGY INC.
6-1-3 Memory Write/Read
6-1-4 Status Read
When users want to write data to memory – DDRAM or CGRAM, then a special Command cycle
has to execute first, the register have to assign to “B0h” on Data Bus. Then the following Data Write
cycle will write data into memory. If users want to read data from memory, then the register has to
assign to “B1h” on Data Bus in Command Write cycle. Please see the following Figure 6-6 (1) and
(2).
RA8806 provides a dedicate Status Read cycle to help users know the status of RA8806. Please
refer to following Figure 6-7 and the beginning of Section 5-2 “Register Description”.
B0h
B1h
RS
ZCS1
ZW R
ZRD
DATA [7:0]
Figure 6-6 : Memory Write/Read Cycle
Figure 6-7 : Status Read Cycle
(2) Memory Read (Read Data from DDRAM)
(1) Memory Write (Write Data to DDRAM)
Status Register Read
DATA1
DATA1
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Status DATA
Two Layers Character/Graphic LCD Controller
DATA2
DATA2
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RA8806
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