Clearing Subsleep Mode; Subactive Mode; Transition To Subactive Mode; Clearing Subactive Mode - Renesas F-ZTAT H8 Series Hardware Manual

5.5.2

Clearing Subsleep Mode

Subsleep mode is cleared by an interrupt (timer A, timer C*, IRQ
) or by a low input at the RES pin.
WKP to WKP
0 7
Note: * The timer C and IRQ
provided in the H8/3854 Group.
Clearing by Interrupt: When an interrupt is requested, subsleep mode is cleared and interrupt
exception handling starts. Subsleep mode is not cleared if the I bit of CCR is set to 1 or the
particular interrupt is disabled in the interrupt enable register.
Clearing by RES Input: Clearing by RES pin is the same as for standby mode; see section 5.3.2,
Clearing Standby Mode.
5.6

Subactive Mode

5.6.1

Transition to Subactive Mode

Subactive mode is entered from watch mode if a timer A, IRQ
requested while the LSON bit in SYSCR1 is set to 1. From subsleep mode, subactive mode is
entered if a timer A, timer C*, IRQ
requested. A transition to subactive mode does not take place if the I bit of CCR is set to 1 or the
particular interrupt is disabled in the interrupt enable register.
Note: * The timer C and IRQ
provided in the H8/3854 Group.
5.6.2

Clearing Subactive Mode

Subactive mode is cleared by a SLEEP instruction or by a input at the RES pin.
Clearing by SLEEP Instruction: If a SLEEP instruction is executed while the SSBY bit in
SYSCR1 is set to 1 and TMA3 bit in TMA is set to 1, subactive mode is cleared and watch mode
is entered. If a SLEEP instruction is executed while SSBY = 0 and LSON = 1 in SYSCR1 and
TMA3 = 1 in TMA, subsleep mode is entered. Direct transfer to active mode is also possible; see
section 5.8, Direct Transfer, below.
Clearing by RES Pin: Clearing by RES pin is the same as for standby mode; see Clearing by RES
pin in section 5.3.2, Clearing Standby Mode.
interrupts are functions of the H8/3857 Group only, and are not
2
, IRQ , IRQ *, IRQ
0 1 2
interrupts are functions of the H8/3857 Group only, and are not
2
5. Power-Down Modes
, IRQ , IRQ
0 1
, or WKP to WKP
0 0
, IRQ , or WKP to WKP
3 4 0
Rev.3.00 Jul. 19, 2007 page 113 of 532
*, IRQ , IRQ ,
2 3 4
interrupt is
7
interrupt is
7
REJ09B0397-0300