參數(shù)資料
型號(hào)： SAA5296PS
廠商： NXP Semiconductors N.V.
英文描述： Economy teletext and TV microcontrollers(經(jīng)濟(jì)的圖文電視和TV控制器)
中文描述： 經(jīng)濟(jì)圖文電視和電視微控制器（經(jīng)濟(jì)的圖文電視和電視控制器）
文件頁數(shù)： 13/72頁
文件大?。?/td> 652K
代理商： SAA5296PS
1998 Dec 14
13
Philips Semiconductors
Preliminary specification
Economy teletext and TV microcontrollers
SAA5x9x family
7.3.6
14-
BIT
PWM DAC
One 14-bit DAC is available to allow direct control of
analog sections of the television. The 14-bit PWM is
controlled using Special Function Registers TDACL and
TDACH.
The output of the TPWM is a pulse of period 42.66
μ
s.
The 7 most significant bits, TDACH.TD13 (MSB) to
TDACH.TD8 and TDACL.TD7, alter the pulse width
between 0 and 42.33
μ
s, in much the same way as in the
6-bit PWMs.
The 7 least significant bits, TDACL.TD6 to TDACL.TD0
(LSB), extend certain pulses by a further 0.33
μ
s, e.g. if the
7 least significant bits are given the value 01H, then
1 in 128 cycles is extended. If the 7 least significant bits
are given the value 02H, then 2 in 128 cycles is extended,
and so forth.
The TPWM will not start to output a new value until after
writing a value to TDACH. Therefore, if the value is to be
changed, TDACL should be written to before TDACH.
7.3.6.1
TPWM High Byte Register (TDACH)
Table 5
TPWM High Byte Register (SFR address D3H)
Table 6
Description of TDACH bits
7.3.6.2
TPWM Low Byte Register (TDACL)
Table 7
TPWM Low Byte Register (SFR address D2H)
Table 8
Description of TDACL bits
7
6
5
4
3
2
1
0
PWE
TD13
TD12
TD11
TD10
TD9
TD8
BIT
SYMBOL
DESCRIPTION
7
PWE
If PWE is set to a logic 1, the TPWM is active and controls port line P2.0. If PWE is set
to a logic 0, the port pin is controlled by the corresponding bit in the port SFR.
Not used.
These 6-bits along with bit TD7 in the TDACL register control the pulse width period.
TD13 is the most significant bit.
6
5
4
3
2
1
0
TD13
TD12
TD11
TD10
TD9
TD8
7
6
5
4
3
2
1
0
TD7
TD6
TD5
TD4
TD3
TD2
TD1
TD0
BIT
SYMBOL
DESCRIPTION
7
TD7
This bit is used with bits TD13 to TD8 in the TDACH register to control the pulse width
period.
These 7-bits extend certain pulses by a further 0.33
μ
s.
6 to 0
TD6 to TD0
相關(guān)PDF資料
PDF描述
SAA5355 Single-chip colour CRT controller FTFROM
SAA5360 Multi page intelligent teletext decoder
SAA5360HL Multi page intelligent teletext decoder
SAA5361 Multi page intelligent teletext decoder
SAA5361HL Multi page intelligent teletext decoder
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SAA5296XP/NV 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Teletext Circuit
SAA5296ZP/NNN 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Teletext Circuit
SAA5297 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Economy teletext and TV microcontrollers
SAA5297A 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Economy teletext and TV microcontrollers
SAA5297AH 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Economy teletext and TV microcontrollers
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*