P8XC557E4 NXP Semiconductors, P8XC557E4 Datasheet - Page 39

• Manufacturer Part Number: P8XC557E4
• Description: The P80C557E4/P83C557E4/P89C557E4 (hereafter generically referred to as P8xC557E4) single-chip 8-bit microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 34. Description of IEN1 bits
If the enable bit is 0, then the interrupt is disabled, if the enable bit is 1, then the interrupt is enabled.
Table 35. Description of IP0 bits
1999 Mar 02
Single-chip 8-bit microcontroller
SYMBOL
SYMBOL
ECM2
ECM1
ECM0
ECT3
ECT2
ECT1
ECT0
PAD
PS1
PS0
PX1
PX0
ET2
PT1
PT0
–
IEN1 (E8H)
IP0 (B8H)
IEN1.7
IEN1.6
IEN1.5
IEN1.4
IEN1.3
IEN1.2
IEN1.1
IEN1.0
IP0.7
IP0.6
IP0.5
IP0.4
IP0.3
IP0.2
IP0.1
IP0.0
BIT
BIT
ET2
Enable T2 overflow interrupt(s)
Enable T2 comparator 2 interrupt
Enable T2 comparator 1 interrupt
Enable T2 comparator 0 interrupt
Enable T2 capture register 3 interrupt
Enable T2 capture register 2 interrupt
Enable T2 capture register 1 interrupt
Enable T2 capture register 0 interrupt
Reserved for future use
ADC interrupt priority level
SIO1 (I
SIO0 (UART) interrupt priority level
Timer 1 interrupt priority level
External interrupt 1/Seconds interrupt priority level
Timer 0 interrupt priority level
External interrupt 0 priority level
–
7
7
2
C) interrupt priority level
ECM2
PAD
6
6
Figure 36. Interrupt enable register (IEN1).
Figure 37. Interrupt priority register (IP0).
ECM1
PS1
5
5
39
ECM0
PS0
4
4
P83C557E4/P80C557E4/P89C557E4
FUNCTION
FUNCTION
ECT3
PT1
3
3
ECT2
PX1
2
2
ECT1
PT0
1
1
Product specification
ECT0
PX0
0
0