參數(shù)資料
型號: ST2202
廠商: Electronic Theatre Controls, Inc.
英文描述: 8 BIT Integrated Microcontroller with 256K Bytes ROM
中文描述: 8位微控制器集成256K字節(jié)ROM的
文件頁數(shù): 42/65頁
文件大?。?/td> 1946K
代理商: ST2202
Sitronix
ST2202
Ver 2.0a
42/65
2003-May-05
FIGURE 16-2 LCD Interface Timing for 1-/4-Bit Data
16.4 Control Registers
16.4.1 LCD Screen Starting Address Register
The LCD screen starting address register (
LSSA
) is used to inform the starting address of current display buffer. Different
LCD frames can be switched quickly by simply modifying content of
LSSA
. The LCD controller will start fetching pixel data
from system memory at this address.
TABLE 16-2 LCD Screen Starting Address Register
Address Name R/W Bit 7/15
Bit 6/14
Bit 5/13
Bit 4/12
$040
LSSAL
W
SSA[7]
SSA[6]
SSA[5]
SSA[4]
$041
LSSAH
W
SSA[15] SSA[14] SSA[13] SSA[12] SSA[11] SSA[10]
Bit 15~0:
LSSA[15:0]
: 16-bit starting address of display buffer
16.4.2 LCD Virtual Page Width Register
The LCD virtual page width register (
LVPW
) contains the width of a virtual screen that may be wider than real setting. This
field is used for calculating the starting point of next line.
TABLE 16-3 LCD Virtual Page Width Register
Address Name R/W
Bit 7
Bit 6
Bit 5
$042
LVPW
W
VP[7]
VP[6]
VP[5]
Bit 7~0:
VP[7:0]
: Width of virtual page width
Virtual page with =
LVPW
* 16
16.4.3 LCD Screen Width Register
The LCD screen width register (
LXMAX
) is used to specify the width of the LCD panel in pixels. Every bit of display data
maps to one pixel of LCD panel.
LXMAX
represents number of data in byte of each line.
Bit 3/11
SSA[3]
Bit 2/10
SSA[2]
Bit 1/9
SSA[1]
SSA[9]
Bit 0/8
SSA[0] 0000 0000
SSA[8] 0000 0000
Default
Bit 4
VP[4]
Bit 3
VP[3]
Bit 2
VP[2]
Bit 1
VP[1]
Bit 0
VP[0]
Default
0000 0000
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