- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄367818 > PCF8578 (NXP Semiconductors N.V.) LCD row/column driver for dot matrix graphic displays PDF資料下載
參數(shù)資料
| 型號： | PCF8578 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | LCD row/column driver for dot matrix graphic displays |
| 中文描述： | 液晶行/列驅(qū)動點陣圖形顯示 |
| 文件頁數(shù)： | 19/44頁 |
| 文件大?。?/td> | 323K |
| 代理商： | PCF8578 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁當前第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁
1998 Sep 08
19
Philips Semiconductors
Product specification
LCD row/column driver for dot matrix
graphic displays
PCF8578
8
I
2
C-BUS PROTOCOL
Two 7-bit slave addresses (0111100 and 0111101) are
reserved for both the PCF8578 and PCF8579. The least
significant bit of the slave address is set by connecting
input SA0 to either 0 (V
SS
) or 1 (V
DD
). Therefore, two types
of PCF8578 or PCF8579 can be distinguished on the
same I
2
C-bus which allows:
1.
One PCF8578 to operate with up to 32 PCF8579s on
the same I
2
C-bus for very large applications
2.
The use of two types of LCD multiplex schemes on the
same I
2
C-bus.
In most applications the PCF8578 will have the same slave
address as the PCF8579.
The I
2
C-bus protocol is shown in Fig.13.
All communications are initiated with a start condition (S)
from the I
2
C-bus master, which is followed by the desired
slave address and read/write bit. All devices with this slave
address acknowledge in parallel. All other devices ignore
the bus transfer.
In WRITE mode (indicated by setting the read/write bit
LOW) one or more commands follow the slave address
acknowledgement. The commands are also
acknowledged by all addressed devices on the bus.
The last command must clear the continuation bit C.
After the last command a series of data bytes may follow.
The acknowledgement after each byte is made only by the
(A0, A1, A2 and A3) addressed PCF8579 or PCF8578
with its implicit subaddress 0. After the last data byte
has been acknowledged, the I
2
C-bus master issues a stop
condition (P).
In READ mode, indicated by setting the read/write bit
HIGH, data bytes may be read from the RAM following the
slave address acknowledgement. After this
acknowledgement the master transmitter becomes a
master receiver and the PCF8578 becomes a slave
transmitter. The master receiver must acknowledge the
reception of each byte in turn. The master receiver must
generating an acknowledge on the last byte clocked out of
the slave. The slave transmitter then leaves the data line
HIGH, enabling the master to generate a stop condition
(P).
Display bytes are written into, or read from, the RAM at the
address specified by the data pointer and subaddress
counter. Both the data pointer and subaddress counter are
automatically incremented, enabling a stream of data to be
transferred either to, or from, the intended devices.
In multiple device applications, the hardware subaddress
pins of the PCF8579s (A0 to A3) are connected to V
SS
or
V
DD
to represent the desired hardware subaddress code.
If two or more devices share the same slave address, then
each device
must
be allocated a unique hardware
subaddress.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCF8578H | LCD row/column driver for dot matrix graphic displays |
| PCF8578U | LCD row/column driver for dot matrix graphic displays |
| PCF8579 | LCD column driver for dot matrix graphic displays |
| PCF8579U7 | LCD column driver for dot matrix graphic displays |
| PCF8579H | LCD column driver for dot matrix graphic displays |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCF8578_03 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:LCD row/column driver for dot matrix graphic displays |
| PCF8578H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:LCD row/column driver for dot matrix graphic displays |
| PCF8578H/1 | 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 |
| PCF8578H/1,118 | 功能描述:LCD 驅(qū)動器 DOT MATRIX LCD DRIV (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 |
| PCF8578H/1,157 | 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。