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HT85F2270 Datasheet(PDF) 109 Page - Holtek Semiconductor Inc |
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HT85F2270 Datasheet(HTML) 109 Page - Holtek Semiconductor Inc |
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109 / 226 page  Rev. 1.00 109 of ��6 �a� 1�� �01� Standard 8051 8-Bit Flash MCU HT85F2260/HT85F2270/HT85F2280 Priority Control Registers Low byte of Interrupt Priority Register 0: IP0 SFR Address: B8h Bit 7 6 5 4 3 2 1 0 Name — WDTS PT� PS0 PT1 PX1 PT0 PX0 R/W — R/W R/W R/W R/W R/W R/W R/W POR — 0 0 0 0 0 0 0 Bit 7 Unimplemented, read as “0” Bit 6 WDTS: Watchdog timer reset indication flag Described elsewhere Bit 5 PT2: Timer 2 Interrupt priority low Low order bit for Timer 2 interrupt priority level. Bit 4 PS0: UART 0 Interrupt priority low Low order bit for UART 0 interrupt priority level. Bit 3 PT1: Timer 1 Interrupt priority low Low order bit for Timer 1 interrupt priority level. Bit 2 PX1: External interrupt 1 priority low Low order bit for External Interupt 1 interrupt priority level. Bit 1 PT0: Timer 0 Interrupt priority low Low order bit for Timer 0 interrupt priority level. Bit 0 PX0: External interrupt 0 priority low Low order bit for External Interupt 0 interrupt priority level. High byte of Interrupt Priority Register 0: IP0H SFR Address: B9h Bit 7 6 5 4 3 2 1 0 Name — — PT�H PS0H PT1H PX1H PT0H PX0H R/W — — R/W R/W R/W R/W R/W R/W POR — — 0 0 0 0 0 0 Bit 7~6 Unimplemented, read as “0” Bit 5 PT2H: Timer 2 Interrupt priority high High order bit for Timer 2 interrupt priority level. Bit 4 PS0H: UART 0 Interrupt priority high High order bit for UART 0 interrupt priority level. Bit 3 PT1H: Timer 1 Interrupt priority high High order bit for Timer 1 interrupt priority level. Bit 2 PX1H: External interrupt 1 priority high High order bit for External Interupt 1 interrupt priority level. Bit 1 PT0H: Timer 0 Interrupt priority high High order bit for Timer 0 interrupt priority level. Bit 0 PX0H: External interrupt 0 priority high High order bit for External Interupt 0 interrupt priority level. |
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