h8s-2628 Renesas Electronics Corporation., h8s-2628 Datasheet - Page 87

• Manufacturer Part Number: h8s-2628
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

2.9
2.9.1
Instructions BSET, BCLR, BNOT, BST, and BIST read data in byte units, and write data in byte
units after bit operation. Therefore, attention must be paid when these instructions are used for
ports or registers including write-only bits.
Instruction BCLR can be used to clear the flag in the internal I/O register to 0. If it is obvious that
the flag has been set to 1 by the interrupt processing routine, it is unnecessary to read the flag
beforehand.
Notes: From any state, a transition to hardware standby mode occurs when STBY goes low.
Request for
exception
Usage Note
Notes on Using the Bit Operation Instruction
Exception handling state
Program execution state
handling
* From any state except hardware standby mode, a transition to the reset state
occurs whenever RES goes low. A transition can also be made to the reset state
when the watchdog timer overflows.
exception
handling
End of
Figure 2.13 State Transitions
SLEEP instruction
Reset state
*
Rev. 3.00 Oct 04, 2005 page 47 of 598
request
Bus-released state
Program halt state
Bus
bus request
End of
REJ09B0155-0300
Section 2 CPU