H8SSLASH2218 datasheet(671/750 Pages) RENESAS

671 / 750 page

Section 20 Power-Down Modes

Rev.6.00 Jun. 03, 2008 Page 623 of 698

REJ09B0074-0600

Timing of Recovery from Hardware Standby Mode:

Drive the

RES signal low approximately 100 ns or more before STBY goes high to execute a

power-on reset.

OSC

NMIRH

≥100 ns

STBY

RES

NMI

Figure 20.7 Timing of Recovery from Hardware Standby Mode

20.6

Module Stop Mode

Module stop mode can be set for individual on-chip supporting modules.

When the corresponding MSTP bit in MSTPCR is set to 1, module operation stops at the end of

the bus cycle and a transition is made to module stop mode. The CPU continues operating

independently.

When the corresponding MSTP bit is cleared to 0, module stop mode is cleared and the module

starts operating at the end of the bus cycle. In module stop mode, the internal states of modules

other than the A/D converter are retained.

After reset clearance, all modules other than DMAC and flash memory are in module stop mode.

When an on-chip supporting module is in module stop mode, read/write access to its registers is

disabled.

When a transition is made to sleep mode with all modules stopped, the bus controller and I/O ports

also stop operating, enabling current dissipation to be further reduced.

H8S/2218 Scheda tecnica(PDF) 671 Page - Renesas Technology Corp