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H8S/2218 数据表(PDF) 405 Page - Renesas Technology Corp |
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H8S/2218 数据表(HTML) 405 Page - Renesas Technology Corp |
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405 / 750 page  Section 11 Realtime Clock (RTC) Rev.6.00 Jun. 03, 2008 Page 357 of 698 REJ09B0074-0600 11.3.8 Extended Module Stop Register (EXMDLSTP) EXMDLSTP controls the clock supply of the RTC and USB. Note: When reading pin states using the port D register (PORTD), after accessing EXMDLSTP (address range: H'FFFF40 to H'FFFF5F), you must perform a dummy read to the external address space (such as H'FFEF00 to H'FF7FF) outside the range H'FFFF40 to H'FFFF5F before reading PORTD. Bit Bit Name Initial Value R/W Module 7 to 2 ⎯ Undefined ⎯ Reserved These bits are always read as undefined values. These bits should not to be modified. 1 RTCSTOP 0 R/W RTC Module Stop 0: RTC module stop cancelled 1: RTC module stop 0 USBSTOP1 0 R/W USB Module Stop 0: USB module stop partly cancelled 1: USB module completely stop |
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