参数资料
| 型号： | PCF8578H/1,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 8/46页 |
| 文件大小： | 0K |
| 描述： | IC LCD DRVR ROW/CLMN 64-LQFP |
| 标准包装： | 1,500 |
| 显示器类型： | LCD |
| 配置： | 点阵 |
| 接口： | I²C |
| 电源电压： | 2.5 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： | 带卷 (TR) |
| 其它名称： | 935276284118 PCF8578H/1-T PCF8578H/1-T-ND |
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NXP Semiconductors
PCF8578
LCD row/column driver for dot matrix graphic displays
8. Functional description
8.1 Display con?gurations
The PCF8578 row and column driver is designed for use in one of three ways:
? Stand-alone row and column driver for small displays (mixed mode)
? Row and column driver with cascaded PCF8579s (mixed mode)
? Row driver with cascaded PCF8579s (mixed mode and row mode)
Table 4.
Possible display con?gurations
Applicatio
Multiplex rate Mixed mode
Row mode
Typical applications
n
Rows
Columns Rows
Columns
stand alone 1:8
1:16
1:24
1:32
8
16
24
32
32
24
16
8
-
-
-
-
-
-
-
-
small digital or
alphanumeric displays
with
1:8
8 [1]
632 [1]
8 ×
4 [2]
640 [2]
alphanumeric displays
PCF8579
1:16
1:24
1:32
16 [1]
24 [1]
32 [1]
624 [1]
616 [1]
608 [1]
16 × 2 [2] 640 [2]
32 [2]
640 [2]
and dot matrix graphic
displays
[1]
[2]
Using 15 PCF8579s.
Using 16 PCF8579s.
In mixed mode, the device functions as both a row and column driver. It can be used in
small stand-alone applications, or for larger displays with up to 15 PCF8579s
(31 PCF8579s when two slave addresses are used). See Table 4 for common display
con?gurations.
In row mode, the device functions as a row driver with up to 32 row outputs and provides
the clock and synchronization signals for the PCF8579. Up to 16 PCF8579s can normally
be cascaded (32 when two slave addresses are used).
Timing signals are derived from the on-chip oscillator, whose frequency is determined by
the value of the resistor connected between pin OSC and pin V SS .
Five commands are available to con?gure and control the operation of the device.
Communication is made via a two-line bidirectional I 2 C-bus. The device may have one of
two slave addresses. The only difference between these slave addresses is the least
signi?cant bit, which is set by the logic level applied to SA0. The PCF8578 and PCF8579
have different subaddresses. The subaddress of the PCF8578 is only de?ned in mixed
mode and is ?xed at 0111 100 (see Section 8.8.7 on page 19 ). The RAM may only be
accessed in mixed mode and data is loaded as described for the PCF8579.
Bias levels may be generated by an external potential divider with appropriate decoupling
capacitors. For large displays, bias sources with high drive capability should be used. A
typical mixed mode system operating with up to 15 PCF8579s is shown in Figure 5 (a
stand-alone system would be identical but without the PCF8579).
PCF8578_6
? NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 06 — 5 May 2009
8 of 46
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相关代理商/技术参数 |
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|---|---|
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| PCF8578HT/1 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:LCD row/column driver for dot matrix graphic displays |
| PCF8578HT/1,518 | 功能描述:LCD 驱动器 3.3V/5V 64-Pin LCD DRIVER RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube |
| PCF8578T | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:LCD row/column driver for dot matrix graphic displays |
| PCF8578T/1 | 制造商:NXP Semiconductors 功能描述:IC LCD DRIVER ROW/COLUMN 56VSOP 制造商:NXP Semiconductors 功能描述:IC, LCD DRIVER, ROW/COLUMN, 56VSOP |
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