HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 202

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

4.3
This section describes the conditions for specific exception handling, and the processor operations.
Resets and general exceptions are explained in this section. For details of interrupts, see section 8,
Interrupt Controller (INTC)
4.3.1
Power-On Reset:
• Conditions
• Operations
Note: * After a power-on reset, though address is H'A0000000, if the BOOT_E pin is asserted
Manual Reset:
• Conditions
• Operations
Note: * After a manual reset, if the BOOT_E pin is asserted low, a branch is made to the ROM
Rev. 1.00, 02/04, page 164 of 804
RESETP is low, power-on reset by WDT is requested, H-UDI reset
Set EXPEVT to H'000, initialize VBR and SR, and branch to PC = H'A0000000.*
The VBR register is cleared to H'00000000 by the initialization. In the SR register, the bits
MD, RB, and BL are set to 1, the DSP bit is cleared to 0, and interrupt mask bits (I3 to I0) are
set to B'1111.
Initialize the CPU and on-chip peripheral modules. For details, refer to the register
descriptions in the relevant sections.
Perform a reset by the RESETP pin low at power supply.
Manual reset by WDT is request
Set EXPEVT to H′020, initialize VBR and SR, and branch to PC = H'A0000000.*
The VBR register is cleared to H'00000000 by the initialization. In the SR register, the bits
MD, RB, and BL are set to 1, the DSP bit is cleared to 0, and interrupt mask bits (I3 to I0) are
set to B'1111. Initialize the CPU and on-chip peripheral modules. A register initialized by a
power-on reset is different from that is initialized by a manual reset. For details, refer to the
register descriptions in the relevant sections.
Individual Exception Operations
Resets
low, a branch is made to the ROM area for the boot function and the boot processing
starts (see section 17, Boot Function).
For the details of the H_UDI reset, see section 26, User Debugging Interface (H-UDI).
area for the boot function and the boot processing starts as in the case of the power-on
reset.