參數(shù)資料
型號: P87C557E8
廠商: NXP Semiconductors N.V.
元件分類: 8位微控制器
英文描述: 8 BIT MICROCONTROLLER
中文描述: 8位微控制器
文件頁數(shù): 44/84頁
文件大?。?/td> 322K
代理商: P87C557E8
1999 Mar 12
44
Philips Semiconductors
Product specification
8-bit microcontroller
P8xC557E8
14.5.3
I
NTERRUPT
P
RIORITY
R
EGISTER
0 (IP0)
Logic 0 = low priority; logic 1 = high priority.
Table 65
Interrupt Priority Register 0 (address B8H)
Table 66
Description of IP0 bits
14.5.4
I
NTERRUPT
P
RIORITY
R
EGISTER
1 (IP1)
Logic 0 = low priority; logic 1 = high priority.
Table 67
Interrupt Priority Register 1 (address F8H)
Table 68
Description of IP1 bits
7
6
5
4
3
2
1
0
PAD
PS1
PS0
PT1
PX1
PT0
PX0
BIT
SYMBOL
PAD
PS1
PS0
PT1
PX1
PT0
PX0
DESCRIPTION
7
6
5
4
3
2
1
0
Reserved for future use.
ADC interrupt priority level.
SIO1 (I
2
C-bus) interrupt priority level.
SIO0 (UART) interrupt priority level.
Timer 1 interrupt priority level.
External interrupt 1/Seconds priority level.
Timer 0 interrupt priority level.
External interrupt 0 priority level.
7
6
5
4
3
2
1
0
PT2
PCM2
PCM1
PCM0
PCT3
PCT2
PCT1
PCT0
BIT
SYMBOL
DESCRIPTION
7
6
5
4
3
2
1
0
PT2
PCM2
PCM1
PCM0
PCT3
PCT2
PCT1
PCT0
T2 overflow interrupt(s) priority level.
T2 comparator 2 priority interrupt level.
T2 comparator 1 priority interrupt level.
T2 comparator 0 priority interrupt level.
T2 capture register 3 priority interrupt level.
T2 capture register 2 priority interrupt level.
T2 capture register 1 priority interrupt level.
T2 capture register 0 priority interrupt level.
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