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BL22P14 Datasheet(PDF) 17 Page - SHANGHAI BELLING CO., LTD. |
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BL22P14 Datasheet(HTML) 17 Page - SHANGHAI BELLING CO., LTD. |
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17 / 33 page  上海贝岭股份 上海贝岭股份 上海贝岭股份 上海贝岭股份有限公司 有限公司 有限公司 有限公司 Shanghai Belling Co., Ltd. BM22P14 BM22P14 BM22P14 BM22P14 用户手册 用户手册 用户手册 用户手册 BL22P14 USER MANUAL TEL：86-21-64850700 WEB: www.belling.com.cn Page 16 of 33 1FE4:1FE5 Reserved 1FE6:1FE7 Reserved 1FE8:1FE9 Reserved 1FEA:1FEB Reserved 1FEC:1FED Reserved 1FEE:1FEF TBI 1FF0:1FF1 RTCI 1FF2:1FF3 T1I 1FF4:1FF5 T0I 1FF6:1FF7 KBI 1FF8:1FF9 INT1 1FFA:1FFB INT0 1FFC:1FFD SWI 1FFE:1FFF RESET The interrupt control registers INTC0 and INTC1 are used to set enable/disable status and interrupt request flags. Once an interrupt subroutine is serviced, other interrupts are all blocked. This scheme may prevent any further interrupt nesting. All these interrupts except software interrupt support a wake-up function. The request flags of KBI, INT0 and INT1 are “0” if relevant interrupt is turn off. But the request flags of T0I, T1I, RTCI and TBI are not affected by enable bit. INTC0 ($0B): Interrupt control register 0 .7-.6 not used .5 KBIE 0 Keyboard interrupt enable/disable 0: KBI disable 1: KBI enable .4 KBIF 0 Keyboard interrupt flag 0: KBI has not interrupt request 1: KBI has interrupt request .3 INT1E 0 External interrupt 1 enable/disable 0: INT1 disable 1: INT1 enable and setting PB1 input with pull-up resistor .2 INT1F 0 External interrupt 1 flag 0: INT1 has not interrupt request 1: INT1 has interrupt request .1 INT0E 0 External interrupt 0 enable/disable 0: INT0 disable 1: INT0 enable and setting PB0 input with pull-up resistor |
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