- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385706 > PCF85176T (NXP SEMICONDUCTORS) Universal LCD driver for low multiplex rates PDF資料下載
參數(shù)資料
| 型號： | PCF85176T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | Universal LCD driver for low multiplex rates |
| 中文描述： | LIQUID CRYSTAL DISPLAY DRIVER, PDSO56 |
| 封裝： | 6.10 MM, PLASTIC, MO-153, SOT364-1, TSSOP-56 |
| 文件頁數(shù)： | 19/47頁 |
| 文件大?。?/td> | 405K |
| 代理商： | PCF85176T |
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(dāng)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頁第45頁第46頁第47頁
PCF85176
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 2 — 27 June 2011
19 of 47
NXP Semiconductors
PCF85176
Universal LCD driver for low multiplex rates
The following applies to
Figure 13
:
In static drive mode the eight transmitted data bits are placed into row 0 as one byte.
In 1:2 multiplex drive mode the eight transmitted data bits are placed in pairs into
row 0 and 1 as two successive 4-bit RAM words.
In 1:3 multiplex drive mode the eight bits are placed in triples into row 0, 1, and 2 as
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 (see
Section 7.10.3
).
In 1:4 multiplex drive mode, the eight transmitted data bits are placed in quadruples
into row 0, 1, 2, and 3 as two successive 4-bit RAM words.
7.10.1
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 12
). Following this command,
an arriving data byte is stored at the display RAM address indicated by the data pointer.
The filling order is shown in
Figure 13
. After each byte is stored, the content of the data
pointer is automatically incremented by a value dependent on the selected LCD drive
mode:
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 then the state of the data pointer is unknown.
Consequently, the data pointer must be rewritten prior to further RAM accesses.
7.10.2
Subaddress counter
The storage of display data is determined by the contents of the subaddress counter.
Storage is allowed only when the content 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 13
). If the content of the subaddress counter
and the hardware subaddress do not match then data storage is inhibited but the data
pointer is 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 PCF85176 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.
The hardware subaddress must not be changed while the device is being accessed on the
I
2
C-bus interface.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCF8574AT | Remote 8-bit I-O expander for I2C-bus |
| PCF8574P | Remote 8-bit I-O expander for I2C-bus |
| PCF8574T | Remote 8-bit I-O expander for I2C-bus |
| PCH1632 | CHIP TYPE IMPEDANCE CONVERTER |
| PCH163250B | CHIP TYPE IMPEDANCE CONVERTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCF85176T/1,118 | 功能描述:LCD 驅(qū)動器 40 SGMT 2640Hz 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 |
| PCF8522EP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:I2C Serial EEPROM |
| PCF8522ET | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:I2C Serial EEPROM |
| PCF8523 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Real-Time Clock (RTC) and calendar |
| PCF8523T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Save power with small, ultra-efficient RTCs |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。