HD64F3694FXV Datasheet, PDF (116/452 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 6 Power-Down Modes
Example
Direct transition time = (2 + 1) × 8tw + (8192 + 14) × tosc = 24tw + 8206tosc
(when the CPU operating clock of φ_w/8 → φ_osc and a waiting time of 8192 states are selected)
Legend
tosc: OSC clock cycle time
tw: watch clock cycle time
tcyc: system clock (φ) cycle time
tsubcyc: subclock (φ_SUB) cycle time
6.5 Module Standby Function
The module-standby function can be set to any peripheral module. In module standby mode, the
clock supply to modules stops to enter the power-down mode. Module standby mode enables each
on-chip peripheral module to enter the standby state by setting a bit that corresponds to each
module to 1 and cancels the mode by clearing the bit to 0.
Rev.5.00 Nov. 02, 2005 Page 86 of 418
REJ09B0028-0500