HD64F7050 RENESAS [Renesas Technology Corp], HD64F7050 Datasheet - Page 661
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HD64F7050
Manufacturer Part Number
HD64F7050
Description
32-Bit RISC Microcomputer SuperH RISC engine Family/
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD64F7050.pdf
(841 pages)
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21.1
In the power-down state, the CPU functions are halted. This enables a great reduction in power
consumption.
21.1.1
The power-down state is effected by the following three modes:
1. Hardware standby mode
2. Software standby mode
3. Sleep mode
Table 21.1 describes the transition conditions for entering the modes from the program execution
state as well as the CPU and peripheral function status in each mode and the procedures for
canceling each mode.
A transition to hardware standby mode is made according to the input level of the RES and
HSTBY pins.
In hardware standby mode, all chip functions are halted.
This state is exited by means of a power-on reset.
A transition to software standby mode is made by means of software (a CPU instruction).
In software standby mode, all chip functions are halted.
This state is exited by means of a power-on reset or an NMI interrupt.
A transition to sleep mode is made by means of a CPU instruction.
In software standby mode, basically only the CPU is halted, and all on-chip peripheral modules
operate.
This state is exited by means of a power-on reset, interrupt, or DMA address error.
Overview
Power-Down States
Section 21 Power-Down State
Rev. 5.00 Jan 06, 2006 page 641 of 818
Section 21 Power-Down State
REJ09B0273-0500
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