Datasheet

Section 20 Power-Down Modes
Rev.7.00 Dec. 24, 2008 Page 629 of 698
REJ09B0074-0700
20.12.6 Entering Subactive/Watch Mode and DMAC and DTC Module Stop
To enter subactive or watch mode, set DMAC to module stop (write 1 to the MSTPA7 bit) and
reading the MSTPA7 bit as 1 before transiting mode. After transiting from subactive mode to
active mode, clear module stop.
When a DMAC activation source is generated in subactive mode, the DMAC is activated when
module stop is cleared following the transition to active mode.
20.12.7 Writing to MSTPCR
MSTPCR should only be written to by the CPU.