Philips Semiconductors |
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| User’s Manual - Preliminary - | |||
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INTERRUPTS |
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| P89LPC906/907/908 | ||||
Table |
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Description | Interrupt | Vector | Interrupt | Interrupt | Arbitration | Power down | ||
Flag Bit(s) | Address | Enable Bit(s) | Priority | Ranking | Wakeup | |||
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Timer 0 Interrupt | TF0 | 000Bh | ET0 (IEN0.1) | IP0H.1, IP0.1 | 3 | No | ||
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Timer 1 Interrupt | TF1 | 001Bh | ET1 (IEN0.3) | IP0H.3, IP0.3 | 5 | No | ||
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Serial Port Tx and Rx1,3 | TI & RI | 0023h | ES/ESR | IP0H.4, IP0.4 | 8 | No | ||
Serial Port Rx1,3 | RI | (IEN0.4) | ||||||
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Brownout Detect | BOF | 002Bh | EBO (IEN0.5) | IP0H.5, IP0.5 | 1 | Yes | ||
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Watchdog Timer/Real- | WDOVF/ | 0053h | EWDRT | IP0H.6, IP0.6 | 2 | Yes | ||
time Clock | RTCF | (IEN0.6) | ||||||
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KBI Interrupt | KBIF | 003Bh | EKBI (IEN1.1) | IP1H.1, IP1.1 | 4 | Yes | ||
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Comparator interrupt | CMF | 0043h | EC (IEN1.2) | IP1H.2, IP1.2 | 6 | Yes | ||
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Serial Port Tx2 | 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). |
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2. This interrupt is used as Serial Port (UART) Tx interrupt if and only if SSTAT.5 = 1, and is disabled otherwise. Although the | ||||||||
P89LPC907 does not have the RxD pin, this function is still available to allow switching the Tx interrupt vector. | ||||||||
3. If SSTAT.0 = 1, the following Serial Port additional flag bits can cause this interrupt: FE, BR, OE |
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EXTERNAL INTERRUPT INPUTS
The P89LPC906/907/908 have a Keypad Interrupt function (see Keypad Interrupt (KBI) on page 77). This can be used as an external interrupt input. If enabled when the P89LPC906/907/908 is put into Power down or Idle mode, the keypad interrupt will cause the processor to wake up and resume operation. Refer to the section on Power Reduction Modes for details.
EXTERNAL INTERRUPT PIN GLITCH SUPPRESSION
Most of the P89LPC906/907/908 pins have glitch suppression circuits to reject short glitches (please refer to the P89LPC906/ 907/908 datasheet, AC Electrical Characteristics for glitch filter specifications) .
2003 Dec 8 | 32 |
