HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 98
HD6412320
Manufacturer Part Number
HD6412320
Description
Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6412320.pdf
(1302 pages)
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Section 2 CPU
2.8
2.8.1
The CPU has five main processing states: the reset state, exception handling state, program
execution state, bus-released state, and power-down state. Figure 2.11 shows a diagram of the
processing states. Figure 2.12 indicates the state transitions.
Rev.6.00 Sep. 27, 2007 Page 68 of 1268
REJ09B0220-0600
Note: * The power-down state also includes a medium-speed mode, module stop mode etc.
Processing
states
Processing States
Overview
Exception-handling
Program execution
Bus-released state
Power-down state
The CPU and all on-chip supporting modules have been
initialized and are stopped.
A transient state in which the CPU changes the normal
processing flow in response to a reset, interrupt, or trap
instruction.
The CPU executes program instructions in sequence.
The external bus has been released in response to a bus
request signal from a bus master other than the CPU.
CPU operation is stopped
to conserve power.*
Figure 2.11 Processing States
Reset state
state
state
Hardware standby
Software standby
Sleep mode
mode
mode
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