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參數(shù)資料
| 型號： | SAB-C505C-LM |
| 廠商： | SIEMENS A G |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-Bit CMOS Microcontroller |
| 中文描述： | 8-BIT, MROM, 20 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | PLASTIC, MQFP-44 |
| 文件頁數(shù)： | 38/85頁 |
| 文件大小： | 487K |
| 代理商： | SAB-C505C-LM |
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C505L
Data Sheet
36
06.99
LCD Controller Unit
The Liquid Crystal Display (LCD) controller unit in the C505L is designed for the control of an LCD
display module of 128 display segments (4 rows and 32 columns) using the 1/4 duty-cycle driving
method. The C505L can be programmed to generate reference voltages for adjusting the contrast
of the display.
An example of a typical LCD module is shown in
Figure 16
. The table describes the different
combinations of the row and column signals required to activate a particular segment. The signals
R0-R3 and C0-C31 are the row and column signals, respectively, connected to the display module.
Figure 16
Organization of a Typical LCD Display Module
The memory required by the LCD controller includes a control register, LCON, the D/A Converter
register DAC0 and 16 individual digit registers (DIGx, x = 0 to F). These registers are implemented
in the on-chip external data memory area. Accesses to these registers are similar to on-chip XRAM
accesses (MOVX instructions) and therefore must be preceded by an enable operation on the on-
chip XRAM.
Note: The actual segment organization within the display unit could be different from the example
considered here. In such cases, the segment names/positions may vary. The user should
consult the manufacturer of the LCD display unit used regarding its segment organization.
The LCD outputs of the C505L must work at a frequency which is not more than 360 Hz in order to
activate a display segment. To achieve this 360-Hz frequency limit, the LCD controller uses a
scheme as shown in
Figure 17
.
A
G
F
B
E
C
D
H
R2
R3
R1
R0
C1
C0
Rows
Columns
C1
F
G
E
D
C0
A
B
C
H
R3
R2
R1
R0
MCD03858
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAB-C505L | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-bit CMOS Microcontroller |
| SAB-C505-LM | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SABC5084EM | 制造商:Infineon Technologies AG 功能描述: 制造商:INFNON 功能描述: |
| SABC5084EM-AB | 制造商:Infineon Technologies AG 功能描述:MCU 8-Bit C500 8051 CISC 32KB EPROM 5V 64-Pin MQFP |
| SAB-C509-LM | 制造商:Rochester Electronics LLC 功能描述: 制造商:Infineon Technologies AG 功能描述: |
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