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P87C453EBLKA Datasheet(PDF) 6 Page - NXP Semiconductors |
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P87C453EBLKA Datasheet(HTML) 6 Page - NXP Semiconductors |
6 / 23 page Philips Semiconductors Preliminary specification 80C453/83C453/87C453 CMOS single-chip 8-bit microcontrollers 1996 Aug 15 3-316 IE.0 IE.2 INT0 IT0 TF0 INT1 IT1 TF1 RI TI IE REGISTER IP REGISTER HIGH PRIORITY INTERRUPT INTERRUPT POLLING SEQUENCE LOW PRIORITY INTERRUPT INDIVIDUAL ENABLES GLOBAL DISABLE 0 1 0 1 IBF SU00562 IE.1 IE.3 IE.4 IE.5 OBF IE.6 Figure 1. 8XC453 Interrupt Control System EX0 LSB MSB BIT SYMBOL FUNCTION IE.7 EA Disables all interrupts. If EA=0, no interrupt will be acknowledged. If EA=1, each interrupt source is individually enabled or disabled by setting or clearing its enable bit. IE.6 IOB Enables or disables the Output Buffer Full (OBF) interrupt. If IOB=0, the interrupt is disabled, If IOB=1, an interrupt will occur if EA is set and data has been read from the output buffer register through Port 6 by the external host pulsing ODS low. IE.5 IIB Enables or disables the Input Buffer Full (IBF) interrupt. If IIB=0, the interrupt is disabled. If IIB=1, an interrupt will occur if EA is set and data has been written into the Port 6 Input Data Buffer by the host strobing IDS low. IE.4 ES Enables or disables the Serial Port Interrupt. If ES=0, the Serial Port Interrupt. If ES=0, the Serial Port interrupt is disabled. IE.3 ET1 Enables or disables the Timer 1 Overflow interrupt. If ET1=0, the Timer 1 interrupt is disabled. IE.2 EX1 Enables or disables External Interrupt 1. If EX1=0, External Interrupt 1 is disabled. IE.1 ET0 Enables or disables the Timer 0 Overflow interrupt. If ET0=0, the Timer 0 interrupt is disabled. IE.0 EX0 Enables or disables External Interrupt 0. If EX0=0, external Interrupt 0 is disabled. SU00563 ET0 EX1 ET1 ES IIB IOB EA Figure 2. 8XC453 Interrupt Enable (IE) Register |
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