參數(shù)資料
型號(hào): GMS87C7216LQ
廠商: Electronic Theatre Controls, Inc.
元件分類: 數(shù)學(xué)處理器
英文描述: 8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 8位單晶片微控制器
文件頁數(shù): 70/121頁
文件大小: 1645K
代理商: GMS87C7216LQ
GMS81C7208/7216
66
FEB. 2005 Ver 1.04
18.1 LCD Control Registers
The LCD driver is controlled by the LCD control register LCR
which is shown in Figure 18-2. LCD block input the clock from
the watch timer. When LCD is operate, the watch timer much be
enabled by WTEN (bit 6 of address 0EF
H
).
Figure 18-2 LCD Control Register
7
6
5
4
3
2
1
0
Selection Frame Frequency
00: f
XIN
÷
2
7
÷
32, 1024Hz@4.19MHz
01: f
XIN
÷
2
7
÷
64, 512Hz@4.19MHz
10: f
XIN
÷
2
7
÷
128, 256Hz@4.19MHz
11: f
XIN
÷
2
7
÷
256, 128Hz@4.19MHz
INITIAL VALUE: 00
H
ADDRESS: 0F1
H
LCR
R/W
R/W
R/W
Duty Control
00: 1/4 Duty
01: 1/3 Duty (SEG24 Active)
10: 1/2 Duty (SEG24, SEG25 Active)
11: Static (SEG24, SEG25, SEG26 Active)
Bias Resistor Control
0: External
1: Internal
No internal bias registers in the Emulator,
so user must select the “0”, External mode at least
during use the Emulator.
OTP and Mask MCU can use both.
LCD Display Control
0: LCD Display All Segment 0 Data Output
1: LCD Display Enable
R/W
R/W
R/W
Bias Transistor Control
0: Off
1: On
BTC
SUBM
LCDEN
BRC
LCK1 LCK0
R/W
R/W
DTY0
DTY1
7
-
6
-
5
R6LPMR
4
3
2
1
R4LPMR
0
R4 port Selection
00:SEG0~SEG7
01:SEG4~SEG7,R40~R43
10:SEG0~SEG3,R44~R47
11:R40~R47
INITIAL VALUE:0000 0000
ADDRESS: 0F2
H
LPMR
R/W
R/W
R/W
R/W
R5LPMR
R5 port Selection
00:SEG8~SEG11
01:R50~R53
10:SEG8~SEG11
11:R50~R53
R6 port Selection
00:SEG16~SEG20
01:SEG20,R60~R63
10:SEG16~SEG19,R64
11:R60~R64
R/W
R/W
R/W
R/W
7
-
6
-
5
-
4
-
3
-
2
-
1
0
INITIAL VALUE: 00
H
ADDRESS: 0F3
H
RPR
R/W
R/W
RPR1 RPR0
-
-
-
-
-
-
The RPR register is used for RAM page selection.
RAM page
Instruction
PRP1
PRR0
Page 0
CLRG
X
X
Page 0
SETG
0
0
Page 1
SETG
0
1
Reserved
SETG
1
0
Reserved
SETG
1
1
** Caution : The bit7(SUBM) of LCR register must be set to “1”
by software because of reduction current consumption
(reset value=”0”).
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