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參數(shù)資料
| 型號： | PCF8578T |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | LCD驅(qū)動器 |
| 英文描述： | LCD row-column driver for dot matrix graphic displays |
| 封裝： | PCF8578HT/1<SOT357-1 (TQFP64)|<<http://www.nxp.com/packages/SOT357-1.html<1<Always Pb-free,;PCF8578T/1<SOT190-1 (VSO56)|<<http://www.nxp.com/packages/SOT190-1.html<1&l |
| 文件頁數(shù)： | 45/46頁 |
| 文件大?。?/td> | 274K |
| 代理商： | PCF8578T |
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PCF8578_6
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 06 — 5 May 2009
8 of 46
NXP Semiconductors
PCF8578
LCD row/column driver for dot matrix graphic displays
8.
Functional description
8.1 Display congurations
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)
[1]
Using 15 PCF8579s.
[2]
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
congurations.
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 VSS.
Five commands are available to congure and control the operation of the device.
Communication is made via a two-line bidirectional I2C-bus. The device may have one of
two slave addresses. The only difference between these slave addresses is the least
signicant 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 dened 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).
Table 4.
Possible display congurations
Applicatio
n
Multiplex rate Mixed mode
Row mode
Typical applications
Rows
Columns Rows
Columns
stand alone
1:8
8
32
-
small digital or
alphanumeric displays
1:16
16
24
-
1:24
24
16
-
1:32
32
8
-
with
PCF8579
1:8
632[1]
8
alphanumeric displays
and dot matrix graphic
displays
1:16
16[1]
624[1]
16
1:24
24[1]
616[1]
24[2]
640[2]
1:32
32[1]
608[1]
32[2]
640[2]
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| PCI-36RS-SB-L | STRAIGHT TELECOM AND DATACOM CONNECTOR |
| PCI-36SS-SB-N | STRAIGHT TELECOM AND DATACOM CONNECTOR |
| PCI-36SS-B-H | STRAIGHT TELECOM AND DATACOM CONNECTOR |
| PCI-50R-B-LT | RIGHT ANGLE TELECOM AND DATACOM CONNECTOR |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| PCF8578T/1,112 | 功能描述:LCD 驅(qū)動器 LCD DRVR DOT MATRIX RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| PCF8578T/1,118 | 功能描述:LCD 驅(qū)動器 DOT MATRIX LCD DRIVER (R/COLM) RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| PCF8578T/1112 | 制造商:NXP Semiconductors 功能描述:IC LCD DRVR 6V VSOP-56 |
| PCF8578TD | 功能描述:LCD 驅(qū)動器 LCD DRVR DOT MATRIX RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
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