Interrupts – Philips P89LPC903 User Manual
Page 36
Philips Semiconductors
User’s Manual - Preliminary -
P89LPC901/902/903
INTERRUPTS
2003 Dec 8
36
Table 3-2: Summary of Interrupts - P89LPC901
Table 3-4: Summary of Interrupts - P89LPC903
Description
Interrupt
Flag Bit(s)
Vector
Address
Interrupt
Enable Bit(s)
Interrupt
Priority
Arbitration
Ranking
Power down
Wakeup
Timer 0 Interrupt
TF0
000Bh
ET0 (IEN0.1)
IP0H.1, IP0.1
3
No
Timer 1 Interrupt
TF1
001Bh
ET1 (IEN0.3)
IP0H.3, IP0.3
5
No
Brownout Detect
BOF
002Bh
EBO (IEN0.5)
IP0H.5, IP0.5
1
Yes
Watchdog Timer/Real-
time Clock
WDOVF/
RTCF
0053h
EWDRT
(IEN0.6)
IP0H.6, IP0.6
2
Yes
KBI Interrupt
KBIF
003Bh
EKBI (IEN1.1)
IP1H.1, IP1.1
4
Yes
Comparator interrupt
CMF
0043h
EC (IEN1.2)
IP1H.2, IP1.2
6
Yes
Table 3-3: Summary of Interrupts - P89LPC902
Description
Interrupt
Flag Bit(s)
Vector
Address
Interrupt
Enable Bit(s)
Interrupt
Priority
Arbitration
Ranking
Power down
Wakeup
Timer 0 Interrupt
TF0
000Bh
ET0 (IEN0.1)
IP0H.1, IP0.1
3
No
Timer 1 Interrupt
TF1
001Bh
ET1 (IEN0.3)
IP0H.3, IP0.3
5
No
Brownout Detect
BOF
002Bh
EBO (IEN0.5)
IP0H.5, IP0.5
1
Yes
Watchdog Timer/Real-
time Clock
WDOVF/
RTCF
0053h
EWDRT
(IEN0.6)
IP0H.6, IP0.6
2
Yes
KBI Interrupt
KBIF
003Bh
EKBI (IEN1.1)
IP1H.1, IP1.1
4
Yes
Comparator interrupt
CMF
0043h
EC (IEN1.2)
IP1H.2, IP1.2
6
Yes
Description
Interrupt
Flag Bit(s)
Vector
Address
Interrupt
Enable Bit(s)
Interrupt
Priority
Arbitration
Ranking
Power down
Wakeup
Timer 0 Interrupt
TF0
000Bh
ET0 (IEN0.1)
IP0H.1, IP0.1
3
No
Timer 1 Interrupt
TF1
001Bh
ET1 (IEN0.3)
IP0H.3, IP0.3
5
No
Serial Port Tx and Rx
1,3
TI & RI
0023h
ES/ESR
(IEN0.4)
IP0H.4, IP0.4
8
No
Serial Port Rx
1,3
RI
Brownout Detect
BOF
002Bh
EBO (IEN0.5)
IP0H.5, IP0.5
1
Yes
Watchdog Timer/Real-
time Clock
WDOVF/
RTCF
0053h
EWDRT
(IEN0.6)
IP0H.6, IP0.6
2
Yes
KBI Interrupt
KBIF
003Bh
EKBI (IEN1.1)
IP1H.1, IP1.1
4
Yes
Comparator interrupt
CMF
0043h
EC (IEN1.2)
IP1H.2, IP1.2
6
Yes
Serial Port Tx
2
TI
006Bh
EST (IEN1.6)
P1H.6, IP1.6
7
No
1. SSTAT.5 = 0 selects combined Serial Port (UART) Tx and Rx interrupt; SSTAT.5 = 1 selects Serial Port Rx interrupt only
(Tx interrupt will be different, see Note 3 below).
2. This interrupt is used as Serial Port (UART) Tx interrupt if and only if SSTAT.5 = 1, and is disabled otherwise.
3. If SSTAT.0 = 1, the following Serial Port additional flag bits can cause this interrupt: FE, BR, OE