- 您现在的位置：买卖IC网 > PDF目录367726 > P87C766BDR (NXP SEMICONDUCTORS) Microcontrollers for PAL/SECAM TV with OSD and VST PDF资料下载
参数资料
| 型号： | P87C766BDR |
| 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, OTPROM, 12 MHz, MICROCONTROLLER, PDIP42 |
| 封装： | 0.600 INCH, PLASTIC, SDIP-42 |
| 文件页数： | 22/92页 |
| 文件大小： | 382K |
| 代理商： | P87C766BDR |
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页当前第22页第23页第24页第25页第26页第27页第28页第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
22
Philips Semiconductors
Product specification
Microcontrollers for PAL/SECAM TV
with OSD and VST
P8xCx66 family
11 INTERRUPT SYSTEM
External events and the real-time driven on-chip
peripherals require service by the CPU asynchronous to
the execution of any particular section of code. To tie the
asynchronous activities of these functions to normal
program execution a multiple-source, two-priority-level,
nested interrupt system is provided. The P8xCx66
acknowledges interrupt requests from twelve sources as
shown in Table 20.
Each interrupt vectors to a separate location in program
memory for its service routine. Each source can be
individually enabled or disabled by using corresponding
bits in the Interrupt Enable Registers (IEN0 and IEN1).
The priority level is selected via the Interrupt Priority
Registers (IP0 and IP1). All enabled sources can be
globally disabled or enabled. The minimum width of the
external interrupt signal is
≥
6 XTAL clocks. The maximum
width of the interrupt signal is the total length of all
instructions in the interrupt service routine until the clear
instruction of the IRQ bit. The external interrupts are INT0,
INT1, P1.0, P1.1, P1.2, P1.3, P1.4 and P1.7.
11.1
External interrupts INT2 to INT7 and INT9
Port 1 lines also serve as additional interrupts
INT2 to INT7 (P1.0, P1.1, P1.2, P1.3, P1.4 and P1.7).
INT7 is used by the derivative functional blocks as follows:
X7 VSYNC interrupt 0063H
Using the IX1 register, each pin may be initialized to be
either active HIGH or active LOW except INT7 which is
fixed active HIGH because this interrupt is from another
derivative function. IRQ1 is the Interrupt Request Flag
Register. Each flag will be set on interrupt request but it
must be cleared by software, i.e. via the interrupt software.
11.2
Interrupt priority
Each interrupt source can be set to either high or low
priority. If both priorities are requested simultaneously, the
controller will branch to the high priority vector.
A low priority interrupt can only be interrupted by a high
priority interrupt. A high priority interrupt routine cannot be
interrupted
11.3
Related registers
The following registers are used in conjunction with the
interrupt system.
Table 19
Interrupt registers
REGISTER
ADDRESS
Interrupt Polarity Register (IX1)
Interrupt Request Flag Register (IRQ1)
Interrupt Enable Register 0 (IEN0)
Interrupt Enable Register 1 (IEN1);
interrupts INT2 to INT9
Interrupt Priority Register 0 (IP0)
Interrupt Priority Register 1 (IP1);
interrupts INT2 to INT9
E9H
C0H
A8H
E8H
B8H
F8H
Table 20
Interrupt request (priority within level)
INTERRUPT MNEMONIC
SOURCE
VECTOR ADDRESS
PX0 (highest)
S1
T0
PX2
PX6
PX1
PX3
PX7
T1
PX4
PX5
PX9 (lowest)
external interrupt 0 (INT0)
I
2
C-bus
Timer 0 overflow
P1.0 port line
P1.4 port line
external interrupt 1 (INT1)
P1.1 port line
VSYNC interrupt
Timer 1 overflow
P1.2 port line
P1.3 port line
P1.7 port line
0003H
002BH
000BH
0033H
005BH
0013H
003BH
0063H
001BH
0043H
004BH
0073H
相关PDF资料 |
PDF描述 |
|---|---|
| P87C766CBA | Microcontrollers for PAL/SECAM TV with OSD and VST |
| P87C766CBP | Microcontrollers for PAL/SECAM TV with OSD and VST |
| P87C766 | Microcontrollers for PAL/SECAM TV with OSD and VST |
| P83C766 | Microcontrollers for PAL/SECAM TV with OSD and VST |
| P83C266BDR | Microcontrollers for PAL/SECAM TV with OSD and VST |
相关代理商/技术参数 |
参数描述 |
|---|---|
| P87L42 | 制造商:INTEL 制造商全称:Intel Corporation 功能描述:UNIVERSAL PERIPHERAL INTERFACE CHMOS 8-BIT SLAVE MICROCONTROLLER |
| P87LPC759 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Low power, low price, low pin count (14 pin) microcontroller with 1 kbyte OTP |
| P87LPC759BN | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Low power, low price, low pin count (14 pin) microcontroller with 1 kbyte OTP |
| P87LPC760 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Low power, low price, low pin count (14 pin) microcontroller with 1 kbyte OTP |
| P87LPC760BDH | 功能描述:8位微控制器 -MCU 80C51 1K/128 OTP RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
发布紧急采购，3分钟左右您将得到回复。