參數(shù)資料
型號： GMS87C7216Q
廠商： Electronic Theatre Controls, Inc.
元件分類： 8位微控制器
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)： 69/121頁
文件大?。?/td> 1645K
代理商： GMS87C7216Q
GMS81C7208/7216
FEB. 2005 Ver 1.04
65
18. LCD DRIVER
The GMS81C7208/16 has the circuit that directly drives the liq-
uid crystal display (LCD) and its control circuit. In addition,
VCL
n
pin is provided as the drive power pin.
Basically, the GMS81C7208/16 has 17 seg.
×
4 com. ports of
LCD driver. Extend display modes are shown in left table.
Figure 18-1shows the configuration of the LCD driver.
********Caution********
When you developing the software using by
Emulator, you must select the external bias re-
sistor mode because of no internal bias resistor
inside the Emulator (EVA. chip).
Figure 18-1 LCD Driver Block Diagram
GMS81C7208/16
1/4 Duty:
17 SEG
×
4COM
1/3 Duty:
18 SEG
×
3COM
1/2 Duty:
19 SEG
×
2COM
Static:
20 SEG
×
1COM
SEG0/R40
D
D
R
L
Display Memory
S
C
(27
×
4 bits)
÷
32
÷
64
÷
128
÷
256
T
SEG7/R47
LPMR[1:0]
LPMR[3:2]
SEG8/R50
SEG11/R53
LPMR[5:4]
SEG16/R60
SEG20/R64
Select
SEG or Normal port
by LPMR [0F2
H
]
[0F1
H
]
LCR
I
Enable LCD
Control bias voltage and resistor
MUX
“Same with above”
“Same with above”
WTCK[1:0]
MUX
reserved
f
MAIN
÷
2
7
00
01
P
COM0
COM1/SEG26
COM2/SEG25
COM3/SEG24
LCR[3:2] of address 0F1
H
C
P
BIAS
VCL2
VCL1
VCL0
Control frame frequency
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