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参数资料
| 型号： | PCA8576CH/Q900/1,1 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 21/54页 |
| 文件大小： | 0K |
| 描述： | IC LCD DRIVER 40SEG I2C 64LQFP |
| 产品培训模块： | I²C Bus Fundamentals |
| 标准包装： | 1 |
| 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： | 标准包装 |
| 其它名称： | 568-5122-6 |
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NXP Semiconductors
PCA8576C
Automotive LCD driver for low multiplex rates
? In the static drive mode, the eight transmitted data bits are placed in row 0 of eight
successive 4-bit RAM words.
? In the 1:2 multiplex mode, the eight transmitted data bits are placed in pairs into
row 0 and 1 of four successive 4-bit RAM words.
? In the 1:3 multiplex mode, the eight bits are placed in triples into row 0, 1, and 2 to
three successive 3-bit RAM words, with bit 3 of the third address left unchanged. It is
not recommended to use this bit in a display because of the difficult addressing. This
last bit may, if necessary, be controlled by an additional transfer to this address but
care should be taken to avoid overwriting adjacent data because always full bytes are
transmitted.
? In the 1:4 multiplex mode, the eight transmitted data bits are placed in quadruples into
row 0, 1, 2, and 3 of two successive 4-bit RAM words.
7.12 Data pointer
The addressing mechanism for the display RAM is realized using the data pointer. This
allows the loading of an individual display data byte or a series of display data bytes, into
any location of the display RAM. The sequence commences with the initialization of the
data pointer by the load-data-pointer command (see Table 11 ). After this, the data byte is
stored starting at the display RAM address indicated by the data pointer (see Figure 13 ).
Once each byte is stored, the data pointer is automatically incremented based on the
selected LCD configuration.
The contents of the data pointer are incremented as follows:
?
?
?
?
In static drive mode by eight.
In 1:2 multiplex drive mode by four.
In 1:3 multiplex drive mode by three.
In 1:4 multiplex drive mode by two.
If an I 2 C-bus data access terminates early, the state of the data pointer is unknown.
Consequently, the data pointer must be rewritten prior to further RAM accesses.
7.13 Sub-address counter
The storage of display data is conditioned by the contents of the subaddress counter.
Storage is allowed to take place only when the contents of the subaddress counter match
with the hardware subaddress applied to A0, A1 and A2. The subaddress counter value is
defined by the device-select command (see Table 12 ). If the contents of the subaddress
counter and the hardware subaddress do not match then data storage is blocked but the
data pointer will be incremented as if data storage had taken place. The subaddress
counter is also incremented when the data pointer overflows.
The storage arrangements described lead to extremely efficient data loading in cascaded
applications. When a series of display bytes are sent to the display RAM, automatic
wrap-over to the next PCA8576C occurs when the last RAM address is exceeded.
Subaddressing across device boundaries is successful even if the change to the next
device in the cascade occurs within a transmitted character.
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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