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| 型号： | P87C380 |
| 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, OTPROM, 16 MHz, MICROCONTROLLER, PDIP42 |
| 封装： | 0.600 INCH, PLASTIC, SOT-270-1, SDIP-42 |
| 文件页数： | 20/84页 |
| 文件大小： | 420K |
| 代理商： | P87C380 |
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1997 Dec 12
20
Philips Semiconductors
Product specification
Microcontrollers for monitors with DDC
interface, auto-sync detection and sync proc.
P83Cx80; P87C380
8.3
Interrupt Enable Register (IE)
Table 23
Interrupt Enable Register (SFR address A8H)
Table 24
Description of IE bits
8.4
Interrupt Priority Register (IP)
Table 25
Interrupt Priority Register (address B8H)
Table 26
Description of IP bits
7
6
5
4
3
2
1
0
EA
ES1
ET1
EX1
ET0
EX0
BIT
SYMBOL
FUNCTION
7
EA
Disable all interrupts
. If EA = 0, then no interrupt will be acknowledged. If EA = 1, then
each interrupt source is individually enabled or disabled by setting or clearing its enable
bit.
Reserved.
Enable DDC interface interrupt
. If ES1 = 1, then DDC interface interrupt is enabled.
If ES1 = 0, then DDC interface interrupt is disabled.
Reserved.
Enable Timer 1 overflow interrupt
. If ET1 = 1, then the Timer 1 interrupt is enabled.
If ET1 = 0, then the Timer 1 interrupt is disabled.
Enable external interrupt 1
. If EX1 = 1 then the External 1 interrupt is enabled.
If EX1 = 0 then the External 1 interrupt is disabled.
Enable Timer 0 overflow interrupt
. If ET0 = 1 then the Timer 0 interrupt is enabled.
If ET0 = 0 then the Timer 0 interrupt is disabled.
Enable mode change
. If EX0 = 1 then the mode change interrupt is enabled.
If EX0 = 0 then the mode change interrupt is disabled.
6
5
ES1
4
3
ET1
2
EX1
1
ET0
0
EX0
7
6
5
4
3
2
1
0
PS1
PT1
PX1
PT0
PX0
BIT
SYMBOL
DESCRIPTION
7 to 6
5
PS1
Reserved.
DDC interface Interrupt priority level
. When PS1 = 1, DDC interface Interrupt is
assigned a high priority level.
Reserved.
Timer 1 overflow interrupt priority level
. When PT1 = 1, Timer 1 Overflow Interrupt is
assigned a high priority level.
External interrupt 1 priority level
. When PX1 = 1, External Interrupt 1 priority is
assigned a high priority level.
Timer 0 overflow interrupt priority level
. When PT0 = 1, Timer 0 Overflow Interrupt is
assigned a high priority level.
Mode change interrupt priority level
. When PX0 = 1, Mode change Interrupt is
assigned a high priority level.
4
3
PT1
2
PX1
1
PT0
0
PX0
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