- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄372112 > SAA5647HL (NXP Semiconductors N.V.) Enhanced TV microcontrollers with On-Screen Display (OSD)(帶全屏顯示的增強型TV控制器) PDF資料下載
參數(shù)資料
| 型號： | SAA5647HL |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Enhanced TV microcontrollers with On-Screen Display (OSD)(帶全屏顯示的增強型TV控制器) |
| 中文描述： | 與微控制器在強化電視屏幕顯示（OSD）（帶全屏顯示的增強型電視控制器） |
| 文件頁數(shù)： | 40/112頁 |
| 文件大?。?/td> | 436K |
| 代理商： | SAA5647HL |
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頁當(dāng)前第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁
2000 Jun 30
40
Philips Semiconductors
Objective specification
Enhanced TV microcontrollers with
On-Screen Display (OSD)
SAA56xx
There are four interrupts connected to the 80C51
microcontroller peripherals, as follows:
I
2
C-bus Transmit/Receive
UART Receive
UART Transmit
UART Receive/Transmit.
Four additional general purpose external interrupts are
incorporated in the SAA56xx with programmable edge
detection (INT2 {EX2}, INT3 {EX3}, INT4 {EX4} and
INT5 {EX5}). The EXTINT SFR is used to configure each
of these interrupts as either level activated, rising edge,
falling edge or both edges sensitive, see Table 10.
12.1
Interrupt enable structure
Each of the individual interrupts can be enabled or
disabled by setting or clearing the relevant bit in the
interrupt enable SFRs (IE and IEN1). All interrupt sources
can also be globally disabled by clearing bit EA (IE.7), as
shown in Fig.10.
12.2
Interrupt enable priority
Each interrupt source can be assigned one of two priority
levels. The interrupt priorities are defined by the interrupt
priority SFRs (IP and IP1).
A low priority interrupt can be interrupted by a high priority
interrupt, but not by another low priority interrupt. A high
priority interrupt cannot be interrupted by any other
interrupt source.
If two requests of different priority level are received
simultaneously, the request with the higher priority level is
serviced. If requests of the same priority level are received
simultaneously, an internal polling sequence determines
which request is serviced. Thus, within each priority level
there is a second priority structure determined by the
polling sequence as defined in Table 12.
12.3
Interrupt vector address
The processor acknowledges an interrupt request by
executing a hardware generated LCALL to the appropriate
servicing routine. The interrupt vector addresses for each
source are shown in Table 12.
12.4
Level/edge interrupt
The external interrupt can be programmed to be either
level activated or transition activated by setting or clearing
the IT0/IT1 bits in the Timer Control SFR (TCON), see
Table 11.
The external interrupt INT1 differs from the standard
80C51 interrupt in that it is activated on both edges when
in edge sensitive mode. This is to allow software pulse
width measurement for handling remote control inputs.
The four other external interrupts INT2, INT3, INT4 and
INT5 are configured using the EXTINT register, as shown
in Table 10.
Table 10
Configuration of external interrupts
(INT2 to INT5)
Table 11
External interrupt activation
Table 12
Interrupt priority (within same level)
SFR EXTINT;
EXnCFG<1:0>;
n = 2 to 5
MODE
00
01
10
11
level sensitive - active LOW
rising edge sensitive
falling edge sensitive
both edges sensitive
BIT
LEVEL
EDGE
IT0
IT1
active LOW
INT0 = negative edge
INT1 = positive and negative edge
SOURCE
PRIORITY
WITHIN
LEVEL
INTERRUP
T VECTOR
RELATED
SFRS
EX0
ES2
EURX
ET0
EBUSY
EX2
EX1
ET2
EX3
ET1
EUART
EX4
ECC
EUTX
EX5
highest
0003H
002BH
0053H
000BH
0033H
005BH
0013H
003BH
0063H
001BH
0043H
006BH
0023H
004BH
0073H
IE
IE
IEN1
IE
IE
IEN1
IE
IEN1
IEN1
IE
IEN1
IEN1
IE
IEN1
IEN1
lowest
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAA5667HL | Enhanced TV microcontrollers with On-Screen Display (OSD)(帶全屏顯示的增強型TV控制器) |
| SAA5697HL | Enhanced TV microcontrollers with On-Screen Display (OSD) |
| SAA5675HL | Enhanced TV microcontrollers with On-Screen Display (OSD) |
| SAA567X | Enhanced TV microcontrollers with On-Screen Display (OSD) |
| SAA5695HL | Enhanced TV microcontrollers with On-Screen Display (OSD) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA5665 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Enhanced TV microcontrollers with On-Screen Display OSD |
| SAA5665HL | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Enhanced TV microcontrollers with On-Screen Display OSD |
| SAA5667 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Enhanced TV microcontrollers with On-Screen Display OSD |
| SAA5667HL | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Enhanced TV microcontrollers with On-Screen Display OSD |
| SAA5675HL | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Enhanced TV microcontrollers with On-Screen Display (OSD) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。