参数资料
型号: P87C766
厂商: NXP Semiconductors N.V.
英文描述: Microcontrollers for PAL/SECAM TV with OSD and VST
中文描述: 微控制器对于PAL / SECAM电视的OSD和伟仕
文件页数: 26/92页
文件大小: 382K
代理商: P87C766
1999 Mar 10
26
Philips Semiconductors
Product specification
Microcontrollers for PAL/SECAM TV
with OSD and VST
P8xCx66 family
11.6
Interrupt Priority Register 0 (IP0)
Table 25
Interrupt Priority Register 0 (SFR address B8H)
Table 26
Description of IP0 bits
A logic 0 selects low priority; a logic 1 selects high priority.
11.7
Interrupt Priority Register 1 (IP1)
Table 27
Interrupt Priority Register 1 (SFR address F8H)
Table 28
Description of IP1 bits
Where PXx = 0 selects low priority; PXx = 1 selects high priority.
7
6
5
4
3
2
1
0
PS1
PT1
PX1
PT0
PX0
BIT
SYMBOL
PS1
PT1
PX1
PT0
PX0
DESCRIPTION
7
6
5
4
3
2
1
0
These 2 bits are not used.
I
2
C-bus SIO interrupt priority level
This bit is not used.
Timer 1 interrupt priority level
external interrupt 1 priority level
Timer 0 interrupt priority level
external interrupt 0 priority level
7
6
5
4
3
2
1
0
PX9
PX7
PX6
PX5
PX4
PX3
PX2
BIT
SYMBOL
DESCRIPTION
7
6
5
4
3
2
1
0
PX9
PX7
PX6
PX5
PX4
PX3
PX2
enable external interrupt 9 priority level (P1.7 port line)
not used
enable external interrupt 7 priority level (VSYNC interrupt)
enable external interrupt 6 priority level (P1.4 port line)
enable external interrupt 5 priority level (P1.3 port line)
enable external interrupt 4 priority level (P1.2 port line)
enable external interrupt 3 priority level (P1.1 port line)
enable external interrupt 2 priority level (P1.0 port line)
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