- 您现在的位置：买卖IC网 > PDF目录68746 > W33D2031 (WINBOND ELECTRONICS CORP) LIQUID CRYSTAL DISPLAY DRIVER, PQFP64 PDF资料下载
参数资料
| 型号： | W33D2031 |
| 厂商： | WINBOND ELECTRONICS CORP |
| 元件分类： | 显示驱动器 |
| 英文描述： | LIQUID CRYSTAL DISPLAY DRIVER, PQFP64 |
| 封装： | PLASTIC, QFP-64 |
| 文件页数： | 27/28页 |
| 文件大小： | 305K |
| 代理商： | W33D2031 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页当前第27页第28页
W33D0001 SERIES
- 8 -
1.2.3 Serial Data Read by
P
The
P can read data from the W33D0001 in normal mode or clock mode. First, the P sends the
starting address to the W33D0001. This addressing method is the same as the addressing method
used in write functions. When the
P sends a clock through the RCLK pin and the first falling edge on
RCLK pin changes the write function to the read function, the W33D0001 can output the serial data
from the RDATA pin when each rising edge of RCLK clock is input. Refer to Figure 4. Please note
that the address 253 (RDATA status control bit) must be programmed to "1" before the read function
is performed.
The function of the three operating modes are described in the following section.
1.3 Normal mode:
As shown in Table 1, the normal mode can be programmed only when the MS pin is high. If the Timer
bit and Clock bit are both "1" (indicating a disabled clock mode and timer mode) the normal mode
data can always be displayed on the LCD panel.
In normal mode, the 128 dots (16 digits) are addressed from 0
127. The first digit is shown in the left
most place in the LCD panel. When the
P reads or writes data to or from the W33D0001 in normal
mode, the
P first arbitrarily sets any address between 0 to 127 as the starting address. The P will
then read or write one bit to or from the W33D0001 while the RCLK or WCLK pin receives one clock
from the
P and the address is increased by one after every read or write clock input. The next
address is reset to 0 when the 127 address is reached.
If more than 128 dots are written by the
P to the W33D0001 at a time, the 129th dot will replace the
first dot, the 130th dot will replace the second dot, and so on until all the dots are written. Refer to
Figure 1.
The active operating mode is selected through the MS pin, Timer bit and Clock bit, where the Timer
bit and Clock bit can be programmed through the
P and stored in the 254 and 255 addresses,
respectively.
The default values of the two bits are both "0". Table 1 indicates the relationship between operating
mode and the MS pin, Timer bit and the Clock bit.
1.3.1 Cascade function:
More than two W33D0001 chips can be cascaded to expand the normal mode display data from 128
dots to 256 dots, 384 dots, ..etc. Only one MS pin in these chips can be pulled high to indicate the
active chip. The data can then be written to the active W33D0001 chip. The application circuits are
shown as Figure 14.
When the cascade function is performed, the exact data in the timer bit and clock bit (254, 255) must
be programmed. In most cases, both bits must be programmed to "0".
1.4 Clock mode:
As shown in Table 2 the clock mode can display leap-year, month, date, hour, and minute. In this
active clock mode, two LCD bars can flash every second. Refer to Figure 8.
There are two methods for adjusting the data for clock mode.
One method uses the transceiver function of the
P to program the clock data.
Another method is through the manual adjustment of the MODE and SET pins.
相关PDF资料 |
PDF描述 |
|---|---|
| W33D2041 | LIQUID CRYSTAL DISPLAY DRIVER, PQFP64 |
| W33D2111 | LIQUID CRYSTAL DISPLAY DRIVER, PQFP64 |
| W33D2121 | LIQUID CRYSTAL DISPLAY DRIVER, PQFP64 |
| W33D2131 | LIQUID CRYSTAL DISPLAY DRIVER, PQFP64 |
| W33D2141 | LIQUID CRYSTAL DISPLAY DRIVER, PQFP64 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| W33-D3B1Q-20 | 制造商:TE Connectivity 功能描述: |
| W33FX-22 | 制造商:Magnecraft 功能描述: |
| W33HSX-178 | 制造商:Struthers-Dunn 功能描述: |
| W33HSX-179 | 制造商:Struthers-Dunn 功能描述: |
| W33HSX-182 | 制造商:Struthers-Dunn 功能描述: |
发布紧急采购，3分钟左右您将得到回复。