参数资料
| 型号： | PCA8576CH/Q900,157 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 22/54页 |
| 文件大小： | 0K |
| 描述： | IC LCD DRIVER UNIV 64LQFP |
| 产品培训模块： | I²C Bus Fundamentals |
| 标准包装： | 800 |
| 显示器类型： | LCD |
| 配置： | 40 段 |
| 接口： | I²C |
| 电流 - 电源： | 120µA |
| 电源电压： | 2 V ~ 6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 64-LQFP |
| 供应商设备封装： | 64-LQFP（10x10） |
| 包装： | 托盘 |
| 其它名称： | 568-5218 |
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NXP Semiconductors
PCA8576C
Automotive LCD driver for low multiplex rates
7.14 Bank selector
7.14.1 Output bank selector
The output bank selector (see Table 13 ), selects one of the four rows per display RAM
address for transfer to the display register. The actual row selected depends on the LCD
drive mode in operation and on the instant in the multiplex sequence.
? In 1:4 multiplex mode: all RAM addresses of row 0 are selected, followed sequentially
by the contents of row 1, row 2, and then row 3.
? In 1:3 multiplex mode: rows 0, 1, and 2 are selected sequentially.
? In 1:2 multiplex mode: rows 0 and 1 are selected.
? In the static mode: row 0 is selected.
The PCA8576C includes a RAM bank switching feature in the static and 1:2 multiplex
drive modes. In the static drive mode, the bank-select command may request the contents
of row 2 to be selected for display instead of the contents of row 0. In 1:2 multiplex drive
mode, the contents of rows 2 and 3 may be selected instead of rows 0 and 1. This
enables preparation of display information in an alternative bank and the ability to switch
to it once it has been assembled.
7.14.2 Input bank selector
The input bank selector (see Table 13 ) loads display data into the display RAM based on
the selected LCD drive configuration. Using the bank-select command, display data can
be loaded in row 2 into static drive mode or in rows 2 and 3 into 1:2 multiplex drive mode.
The input bank selector functions independently of the output bank selector.
7.15 Blinking
The display blinking capabilities of the PCA8576C are very versatile. The whole display
can be blinked at frequencies selected by the blink-select command. The blinking
frequencies are integer fractions of the clock frequency; the ratios between the clock and
blinking frequencies depend on the mode in which the device is operating (see Table 8 ).
Table 8.
Blink frequencies
f blink = ----------------
f blink = ----------------
f blink = --------------------
f blink = ----------------
f blink = --------------------
f blink = ----------------
Blinking mode
off
1
2
3
Normal-power mode
ratio
-
f clk
92160
f clk
184320
f clk
368640
Power-saving mode
ratio
-
f clk
15360
f clk
30720
f clk
61440
Blink frequency
blinking off
2 Hz
1 Hz
0.5 Hz
An additional feature is for an arbitrary selection of LCD segments to be blinked. This
applies to the static and 1:2 multiplex drive modes and can be implemented without any
communication overheads. Using the output bank selector, the displayed RAM banks are
exchanged with alternate RAM banks at the blinking frequency. This mode can also be
specified by the blink-select command (see Table 14 ).
PCA8576C
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 16 December 2013
? NXP B.V. 2013. All rights reserved.
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相关代理商/技术参数 |
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|---|---|
| PCA8576D | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Automotive 40 x 4 LCD segment driver for low multiplex rates up to 1:4 |
| PCA8576DU | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Automotive 40 x 4 LCD segment driver for low multiplex rates up to 1:4 |
| PCA8576DU/2DA/Q2,0 | 功能描述:IC LCD DRIVER AUTO 40X4 UNCASED RoHS:是 类别:未定义的类别 >> 其它 系列:* 标准包装:1 系列:* 其它名称:MS305720A |
| PCA8576Q2 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Automotive 40 x 4 LCD segment driver for low multiplex rates up to 1:4 |
| PCA8581 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:128 x 8-bit EEPROM with I2C-bus interface |
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