Datasheet

Section 11 Realtime Clock (RTC)
Rev.7.00 Dec. 24, 2008 Page 357 of 698
REJ09B0074-0700
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