參數(shù)資料
型號(hào)： PCF8562
廠商： NXP Semiconductors N.V.
英文描述： Universal LCD driver for low multiplex rates
中文描述： 通用LCD驅(qū)動(dòng)器的低復(fù)用率
文件頁(yè)數(shù)： 20/36頁(yè)
文件大?。?/td> 928K
代理商： PCF8562
November 22, 2004
20
Philips Semiconductors
Preliminary specification
Universal LCD driver
for low multiplex rates
PCF8562
The I
2
C-bus protocol is shown in Fig.16. The sequence is initiated with a START condition (S) from the I
2
C-bus master
which is followed by one of two possible PCF8562 slave addresses available. All PCF8562s whose SA0 inputs
correspond to bit 0 of the slave address respond by asserting an acknowledge in parallel. This I
2
C-bus transfer is ignored
by all PCF8562s whose SA0 inputs are set to the alternative level.
After an acknowledgement, one or more command bytes follow which define the status of the PCF8562.
The last command byte sent is identified by resetting its most significant bit, continuation bit C, (see Fig.17). The
command bytes are also acknowledged by all addressed PCF8562s on the bus.
After the last command byte, one or more display data bytes may follow. Display data bytes are stored in the display
RAM at the address specified by the data pointer and the subaddress counter. Both data pointer and subaddress counter
are automatically updated.
An acknowledgement after each byte is asserted only by PCF8562s that are addressed via address lines A0, A1 and A2.
After the last display byte, the I
2
C-bus master asserts a STOP condition (P). Alternately a START may be asserted to
RESTART an I
2
C-bus access.
7.8
Command decoder
The command decoder identifies command bytes that arrive on the I
2
C-bus. All available commands carry a continuation
bit C in their most significant bit position as shown in Fig.17. When this bit is set, it indicates that the next byte of the
transfer to arrive will also represent a command. If this bit is reset, it indicates that the command byte is the last in the
transfer. Further bytes will be regarded as display data.
The five commands available to the PCF8562 are defined in Table 4.
Fig.12 Bit transfer.
MBA607
data line
stable;
data valid
change
of data
allowed
SDA
SCL
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCF8562_09 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal LCD driver for low multiplex rates
PCF8562_11 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal LCD driver for low multiplex rates
PCF8562DTT/2,518 制造商:NXP Semiconductors 功能描述:Tape & Reel
PCF8562TT/2 制造商:NXP Semiconductors 功能描述:
PCF8562TT/2,118 功能描述:LCD 驅(qū)動(dòng)器 LCD DRIVER 32/128SEG RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)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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