h8s-2628 Renesas Electronics Corporation., h8s-2628 Datasheet - Page 541
h8s-2628
Manufacturer Part Number
h8s-2628
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2628.pdf
(641 pages)
- Current page: 541 of 641
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Section 21 Power-Down Modes
Section 21 Power-Down Modes
In addition to the normal program execution state, this LSI has five power-down modes in which
operation of the CPU and oscillator is halted and power consumption is reduced. Low-power
operation can be achieved by individually controlling the CPU, on-chip peripheral modules, and
so on.
This LSI’s 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 power-down modes. Sleep mode is a CPU state, 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.
Figure 21.1 shows possible transitions between modes. Table 21.1 shows the conditions of
transition made by the SLEEP instruction and recovery from power-down mode by an interrupt.
Table 21.2 shows the internal states in each mode.
Rev. 3.00 Oct 04, 2005 page 501 of 598
REJ09B0155-0300
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