HD64F2636F20 Datasheet, PDF (975/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
Section 23A Power-Down Modes [HD64F2636F, HD64F2638F, HD6432636F,
HD6432638F, HD64F2630F, HD6432630F, HD64F2635F, HD6432635F, HD6432634F]
Section 23A Power-Down Modes
[HD64F2636F, HD64F2638F, HD6432636F, HD6432638F,
HD64F2630F, HD6432630F, HD64F2635F, HD6432635F,
HD6432634F]
Subclock functions are not available in the HD64F2636F, HD64F2638F, HD6432636F,
HD6432638F, HD64F2630F, and HD6432630F.
23A.1 Overview
In addition to the normal program execution state, the chip has nine power-down modes in which
operation of the CPU and oscillator is halted and power dissipation is reduced. Low-power
operation can be achieved by individually controlling the CPU, on-chip supporting modules, and
so on.
The chip operating modes are as follows:
(1) High-speed mode
(2) Medium-speed mode
(3) Sleep mode
(4) Module stop mode
(5) Software standby mode
(6) Hardware standby mode
(2) to (6) are low power dissipation states. Sleep mode is CPU states, medium-speed mode is a
CPU and bus master state, and module stop mode is an internal peripheral function (including bus
masters other than the CPU) state. Some of these states can be combined.
After a reset, the LSI is in high-speed mode with modules other than the DTC in module stop
mode.
Notes: 1. Subclock functions (subactive mode, subsleep mode, and watch mode) are available in
the U-mask and W-mask versions, and H8S/2635 Group.
These functions cannot be used with the other versions.
2. See section 22A.7, Subclock Oscillator, for the method of fixing pins OSC1 and OSC2
when not used.
REJ09B0103-0800 Rev. 8.00
May 28, 2010
Page 925 of 1458