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参数资料
| 型号： | C505L |
| 厂商： | SIEMENS AG |
| 英文描述： | Microcontrollers(8位微控制器) |
| 中文描述： | 微控制器（8位微控制器） |
| 文件页数： | 12/25页 |
| 文件大小： | 113K |
| 代理商： | C505L |
LCD Control
Using the C505L
12 of 25
AP0829 05.99
The C505L allows a great deal of flexibility in choosing an LCD. The maximum voltage
applied to the LCD is controlled by the DAC0 register. The LCD frequency (f
LCD
) is
controlled by the 15-bit reload value placed in the LCRH and LCRL registers. The 15-bit
down counter can be clocked by the external system oscillator, or by the Real Time Clock
oscillator.
The C505L generates up to 4 row outputs and up to 32 column outputs. If fewer than 32
column outputs are needed, 8 or 16 of the pins can be used as digital I/O pins.
There are 16 x 8-bit registers that are used to individually control the 128 segments. Each
bit in these registers represents a segment. Setting a bit activates a segment by
automatically applying the appropriate voltages and timing to the column pins. Setting
multiple bits activates multiple segments. Each of the 16 registers controls 2 consecutive
column outputs as shown in Figure 9.
Figure 9:
LCD Segment Registers
5
Connecting an LCD to the C505L
When connecting an LCD to the C505L, it is important to consider the order in which the
column pins are connected to the LCD. For example, consider an LCD that is made up of
8 identical characters each with 8 segments. Each character is controlled by 2 column
pins as shown in Figure 10.
C
(n+1)
,R
3
C
n
,R
3
C
(n+1)
,R
2
C
n
,R
2
C
(n+1)
,R
1
C
n
,R
1
C
n
,R
0
C
(n+1)
,R
0
DIGm (0xF3Em)
n = 0, 2, 4, 6, …, 30
m = n÷2
.7
.6
.5
.4
.3
.2
.1
.0
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相关代理商/技术参数 |
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|---|---|
| C505-L | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit Single-Chip Microcontroller |
| C505L_1 | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| C505L4EMCCFXQMA1 | 功能描述:IC MCU 32BIT 80MQFP 制造商:infineon technologies 系列:* 零件状态:最後搶購 标准包装:1 |
| C505L4EMCCFXUMA1 | 功能描述:IC MCU 32BIT 80MQFP 制造商:infineon technologies 系列:* 零件状态:最後搶購 标准包装:1 |
| C505-LM | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
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