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| 型号： | P83C280 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | Microcontrollers for monitors with DDC interface, auto-sync detection and sync proc(带DDC接口，同步监测和同步处理的监视器微控制器) |
| 中文描述： | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, PDIP42 |
| 封装： | 0.600 INCH, PLASTIC, SOT-270-1, SDIP-42 |
| 文件页数： | 60/84页 |
| 文件大小： | 420K |
| 代理商： | P83C280 |
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1997 Dec 12
60
Philips Semiconductors
Product specification
Microcontrollers for monitors with DDC
interface, auto-sync detection and sync proc.
P83Cx80; P87C380
19.2.5.3
Parameter Hpol
The mode change interrupt will be issued after 36 to 40
periods of the HSYNC when the polarity is changed from
negative to positive. The polarity indicator Hpol will be
changed from a logic 1 to a logic 0. The mode change
interrupt will be issued after the 60 periods of the HSYNC
when the polarity is changed from positive to negative. The
Hpol will be changed from a logic 0 to a logic 1. A logic 0
represents a positive polarity and a logic 1 represents a
negative polarity.
19.2.5.4
Parameter Hcha
If Hcha is set to HIGH indicating that the period time has
changed for a long period, the Hper and Hpres will be
updated. If the measured period time has become stable
then the two counters will start to count down and the
HENA signal is set to LOW again, thereby disabling the
register Hper and the SR flip-flop for Hpres parameter.
Fig.29 Horizontal mode detection.
handbook, full pagewidth
MGG038
D-FF
SR-FF
D
E
Q
Q
Hper and Hpol
DECISION
CIRCUIT
DIV 16
Hpol
FOSH
FOSH
HENA
Hcnt
Hcha
FOSH
HSYNC
HSYNC_P
Hres
S
R
Hpres
Hper
Q
Hhgh
Hlow
12-BIT
COUNTER
R
Q 11 to Q0
FOSH
12-BIT
REGISTER
Q11 to Q0
Hper
CHANGE
DETECTOR
MODE
CHANGE
STABILIZATION
AND
COMPARISON
CIRCUIT
D11 to D0
E
相关PDF资料 |
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| P83C380 | Microcontrollers for monitors with DDC interface, auto-sync detection and sync proc(带DDC接口，同步监测和同步处理的监视器微控制器) |
| P87C380 | Microcontrollers for monitors with DDC interface, auto-sync detection and sync proc(带DDC接口，同步监测和同步处理的监视器微控制器) |
| P83C880 | Microcontrollers for monitors with DDC interface, auto-sync detection and sync proc(带DDC接口，同步监测和同步处理的监视器微控制器) |
| P83C180 | Microcontrollers for monitors with DDC interface, auto-sync detection and sync proc(带DDC接口，同步监测和同步处理的监视器微控制器) |
| P83C370AAR | 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) |
相关代理商/技术参数 |
参数描述 |
|---|---|
| P83C366 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Microcontrollers for PAL/SECAM TV with OSD and VST |
| P83C366BDA | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Microcontrollers for PAL/SECAM TV with OSD and VST |
| P83C366BDR | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Microcontrollers for PAL/SECAM TV with OSD and VST |
| P83C366CBP | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Microcontrollers for PAL/SECAM TV with OSD and VST |
| P83C370 | 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 |
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