HD6417616 RENESAS [Renesas Technology Corp], HD6417616 Datasheet - Page 53

• Manufacturer Part Number: HD6417616
• Description: 32-Bit RISC Microcomputer SuperH™ RISC engine Family/SH7600 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

1.4
State Transitions: The CPU has five processing states: the reset state, exception handling state,
bus-released state, program execution state, and power-down state. Figure 1.3 shows the state
transitions.
Processing States
Note: * clock pause function
Bus request
From any state when
RES = 0 and NMI = 1
received
Bus-released state
Interrupt or DMA
address error
When used for general input/output, attention must be paid to the polarity of
this pin.
Power-on reset state
Bus request
Bus request
cleared
Figure 1.3 Processing State Transitions
Sleep mode
Bus request
received
cleared
(SBY = 0)
instruction
SLEEP
Bus request
RST = 1,
NMI = 1
cleared
request
Bus
Program execution state
Exception-handling state
Exception
RST = 0, NMI = 0
cleared
RST = 0, NMI = 1
Module standby
MSTP
bit
From any state when
RES = 0 and NMI = 0
MSTP
bit set
End of
exception
handling
Rev. 2.00 Mar 09, 2006 page 27 of 906
RST = 1,
NMI = 0
Standby mode
SLEEP
Manual reset state
instruction
(SBY = 1)
CKPREQ = 1 *
Power-down state
SBY bit set and
CKPREQ = 0 *
Reset states
NMI interrupt
Section 1 Overview
REJ09B0292-0200