Datasheet

Section 24 Power-Down Modes
Rev. 6.00 Mar. 18, 2010 Page 802 of 982
REJ09B0054-0600
24.12.5 Writing to MSTPCR
MSTPCR should only be written to by the CPU.
24.12.6 Entering Subactive/Watch Mode and DMAC* and DTC Module Stop
To enter subactive or watch mode, set DMAC* and DTC to module stop (write 1 to the MSTPA6
bit and MSTPA7 bit) and reading the MSTPA6 bit and MSTPA7 bit as 1 before transiting mode.
After transiting from subactive mode to active mode, clear module stop.
When DMAC* or DTC activation factor occurs in subactive mode, DMAC* or DTC is activated
when module stop is cleared after active mode is entered.
Note: * Supported only by the H8S/2239 Group.