HD64F2638F20J Datasheet, PDF (997/1512 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 23B Power-Down Modes [HD64F2636UF, HD6432636UF, HD64F2638UF, HD6432638UF,
HD64F2638WF, HD6432638WF, HD64F2639UF, HD6432639UF, HD64F2639WF, HD6432639WF,
HD64F2630UF, HD6432630UF, HD64F2630WF, HD6432630WF, HD6432635F, HD64F2635F, HD6432634F]
Section 23B Power-Down Modes
[HD64F2636UF, HD6432636UF,
HD64F2638UF, HD6432638UF, HD64F2638WF,
HD6432638WF, HD64F2639UF, HD6432639UF,
HD64F2639WF, HD6432639WF,
HD64F2630UF, HD6432630UF,
HD64F2630WF, HD6432630WF,
HD6432635F, HD64F2635F, HD6432634F]
Note: The DTC, PBC, PPB, and D/A converter are not implemented in the H8S/2635 Group.
23B.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) Subactive mode* (U-mask, W-mask version, H8S/2635 Group only)
(4) Sleep mode
(5) Subsleep mode* (U-mask, W-mask version, H8S/2635 Group only)
(6) Watch mode* (U-mask, W-mask version, H8S/2635 Group only)
(7) Module stop mode
(8) Software standby mode
(9) Hardware standby mode
(2) to (9) are low power dissipation states. Sleep mode and subsleep mode are CPU states,
medium-speed mode is a CPU and bus master state, subactive mode is a CPU and bus master and
internal peripheral function 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.
REJ09B0103-0800 Rev. 8.00
May 28, 2010
Page 947 of 1458