- 您现在的位置：买卖IC网 > PDF目录367726 > P83C766BDP (NXP SEMICONDUCTORS) Microcontrollers for PAL/SECAM TV with OSD and VST PDF资料下载
参数资料
| 型号： | P83C766BDP |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | Microcontrollers for PAL/SECAM TV with OSD and VST |
| 中文描述： | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PDIP42 |
| 封装： | 0.600 INCH, PLASTIC, SDIP-42 |
| 文件页数： | 29/92页 |
| 文件大小： | 382K |
| 代理商： | P83C766BDP |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页当前第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页
1999 Mar 10
29
Philips Semiconductors
Product specification
Microcontrollers for PAL/SECAM TV
with OSD and VST
P8xCx66 family
11.10 VSYNC interrupt and level status bit
The SFR VINT is read-only. Figure 13 shows the timing diagram of VSYNC interrupt.
Table 33
VSYNC Interrupt Register (SFR address C9H)
Table 34
Description of VINT bits
11.10.1 E
XTERNAL INTERRUPT REQUEST
(IQ7)
A rising or falling edge (see Fig.13) of the active VSYNC signal generates a pending interrupt to the CPU and drives IQ7
HIGH (IQ7 resides in the SFR IRQ1). In the service routine, this bit should be cleared before return to main routine.
As long as this bit is HIGH a pending interrupt is always there. Each time VSYNC is activated by a rising or falling edge,
IQ7 is set HIGH. If the interrupt is not serviced before the next leading VSYNC edge, then IQ7 is written HIGH again and
no error of overrun is indicated.
7
6
5
4
3
2
1
0
VLVL
BIT
SYMBOL
VLVL
DESCRIPTION
7 to 1
0
These 7 bits are not used.
VSYNC input pin level.
The state of this bit indicates the level of the VSYNC input. As
the input polarity of VSYNC is programmable two situations may be defined.
If VSYNC is programmed active HIGH then:
VLVL = 0, means VSYNC is at a LOW level, i.e. raster scan period
VLVL = 1, means VSYNC is at HIGH level, i.e.vertical fly-back period.
If VSYNC is programmed to active LOW then:
VLVL = 0, means VSYNC is at LOW level, i.e. vertical fly-back period
VLVL = 1, means VSYNC is at HIGH level, i.e. raster scan period
Fig.13 Timing diagram of VSYNC interrupt.
handbook, full pagewidth
VSYNC
VSYNC
VSYNC active LOW (Vp = 0)
VSYNC active HIGH (Vp = 1)
MGL286
The falling edge of VSYNC generates interrupt
The rising edge of VSYNC generates an interrupt
相关PDF资料 |
PDF描述 |
|---|---|
| P83C566 | Microcontrollers for PAL/SECAM TV with OSD and VST |
| P83C566BDR | Microcontrollers for PAL/SECAM TV with OSD and VST |
| P83C366BDR | Microcontrollers for PAL/SECAM TV with OSD and VST(带 OSD和 VST的在PAL/SECAM TV中应用的微控制器) |
| P83C366CBP | Microcontrollers for PAL/SECAM TV with OSD and VST(带 OSD和 VST的在PAL/SECAM TV中应用的微控制器) |
| P87C766BDR | Microcontrollers for PAL/SECAM TV with OSD and VST |
相关代理商/技术参数 |
参数描述 |
|---|---|
| P83C770 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Microcontrollers for NTSC TVs with On-Screen Display OSD and Closed Caption CC |
| P83C770AAR | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Microcontrollers for NTSC TVs with On-Screen Display OSD and Closed Caption CC |
| P83C834 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:8-bit microcontrollers with LCD-driver |
| P83C834CFP | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:8-bit microcontrollers with LCD-driver |
| P83C845BBP | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Microcontrollers for TV and video MTV |
发布紧急采购，3分钟左右您将得到回复。