h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 150

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 5 Interrupt Controller
5.5.4
Interrupt operation differs between the EEPMOV.B instruction and the EEPMOV.W instruction.
With the EEPMOV.B instruction, an interrupt request (including NMI) issued during the transfer
is not accepted until the move is completed.
With the EEPMOV.W instruction, if an interrupt request is issued during the transfer, interrupt
exception handling starts at a break in the transfer cycle. The PC value saved on the stack in this
case is the address of the next instruction.
Therefore, if an interrupt is generated during execution of an EEPMOV.W instruction, the
following coding should be used.
5.5.5
When operating by clock input, acceptance of input to an IRQ pin is synchronized with the clock.
In software standby mode, the input is accepted asynchronously. For details on the input
conditions, see section 23.4.2, Control Signal Timing.
5.6
5.6.1
The DTC can be activated by an interrupt. In this case, the following options are available:
• Interrupt request to CPU
• Activation request to DTC
• Selection of a number of the above
For details of interrupt requests that can be used with to activate the DTC, see section 8, Data
Transfer Controller (DTC).
Rev. 5.00 Sep 22, 2005 page 124 of 1136
REJ09B0257-0500
L1:
Interrupts during Execution of EEPMOV Instruction
IRQ Interrupts
DTC Activation by Interrupt
Overview
EEPMOV.W
MOV.W
BNE
R4,R4
L1