HD6473847RHV Datasheet, PDF (161/546 Pages) Renesas Technology Corp – Renesas 8-Bit Single-Chip Microcomputer H8 Family / H8/300L Super Low Power Series

Section 5 Power-Down Modes
5.3.4 Direct Transition from Subactive Mode to Active (Medium-Speed) Mode
The time from the start of SLEEP instruction execution to the end of interrupt exception handling
(the direct transition time) is calculated by equation (4).
Direct transition time = {(Number of SLEEP instruction execution states) + (Number of internal
processing states)} × (tsubcyc before transition) + {(Wait time set in bits
STS2 to STS0) + (Number of interrupt exception handling execution
states)} × (tcyc after transition)
………………..(4)
Example:
Direct transition time = (2 + 1) × 8tw + (8192 + 14) × 16tosc = 24tw +
131296tosc (when φw/8 or φ/8 is selected as the CPU operating clock and wait
time = 8192 states)
Legend:
tosc: OSC clock cycle time
tw: Watch clock cycle time
tcyc: System clock (φ) cycle time
tsubcyc: Subclock (φ_SUB) cycle time
5.3.5 Notes on External Input Signal Changes before/after Direct Transition
• Direct transition from active (high-speed) mode to subactive mode
Since the mode transition is performed via watch mode, see section 5.5.2, Notes on External
Input Signal Changes before/after Standby Mode.
• Direct transition from active (medium-speed) mode to subactive mode
Since the mode transition is performed via watch mode, see section 5.5.2, Notes on External
Input Signal Changes before/after Standby Mode.
• Direct transition from subactive mode to active (high-speed) mode
Since the mode transition is performed via watch mode, see section 5.5.2, Notes on External
Input Signal Changes before/after Standby Mode.
• Direct transition from subactive mode to active (medium-speed) mode
Since the mode transition is performed via watch mode, see section 5.5.2, Notes on External
Input Signal Changes before/after Standby Mode.
Rev. 7.00 Mar. 08, 2010 Page 129 of 510
REJ09B0024-0700