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P89C662 Datasheet(PDF) 51 Page - NXP Semiconductors |
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P89C662 Datasheet(HTML) 51 Page - NXP Semiconductors |
51 / 89 page Philips Semiconductors Product data P89C660/P89C662/P89C664/ P89C668 80C51 8-bit Flash microcontroller family 16KB/32KB/64KB ISP/IAP Flash with 512B/1KB/2KB/8KB RAM 2002 Oct 28 51 PX0 IP (0B8H) Priority Bit = 1 assigns high priority Priority Bit = 0 assigns low priority BIT SYMBOL FUNCTION IP.7 PT2 Timer 2 interrupt priority bit. IP.6 PPC PCA interrupt priority bit IP.5 PS1 Serial I/O1 (I2C) interrupt priority bit. IP.4 PS0 Serial Port interrupt priority bit. IP.3 PT1 Timer 1 interrupt priority bit. IP.2 PX1 External interrupt 1 priority bit. IP.1 PT0 Timer 0 interrupt priority bit. IP.0 PX0 External interrupt 0 priority bit. SU01455 PT0 PX1 PT1 PS0 PS1 PPC PT2 0 1 2 3 4 5 6 7 Figure 36. IP Registers PX0H IPH (B7H) Priority Bit = 1 assigns higher priority Priority Bit = 0 assigns lower priority BIT SYMBOL FUNCTION IPH.7 PT2H Timer 2 interrupt priority bit high. IPH.6 PPCH PCA interrupt priority bit IPH.5 PS1H Serial I/O (I2C) interrupt priority bit high. IPH.4 PS0H Serial Port interrupt priority bit high. IPH.3 PT1H Timer 1 interrupt priority bit high. IPH.2 PX1H External interrupt 1 priority bit high. IPH.1 PT0H Timer 0 interrupt priority bit high. IPH.0 PX0H External interrupt 0 priority bit high. SU01456 PT0H PX1H PT1H PS0H PS1H PPCH PT2H 0 1 2 3 4 5 6 7 Figure 37. IPH Registers ET2 IEN1 (E8H) Enable Bit = 1 enables the interrupt Enable Bit = 0 disables the interrupt BIT SYMBOL FUNCTION IEN1.7 — IEN1.6 — IEN1.5 — IEN1.4 — IEN1.3 — IEN1.2 — IEN1.1 — IEN1.0 ET2 Timer 2 interrupt enable bit. SU01095 — — — — — — — 0 1 2 3 4 5 6 7 Figure 38. IEN1 Registers |
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