M32C8A Datasheet, PDF (122/372 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M32C/80 Series

M32C/8A Group
11. Interrupts
Exit Priority Register
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
RLVL
Address
009F
After Reset
XXXX 0000b
Bit Symbol
Bit Name
Function
RW
b2 b1 b0
RLVL0
0 0 0: Level 0
RW
0 0 1: Level 1
Exit wait mode/stop mode
0 1 0: Level 2
RLVL1 interrupt priority level
0 1 1: Level 3
RW
control bits⁽¹⁾
1 0 0: Level 4
1 0 1: Level 5
RLVL2
1 1 0: Level 6
1 1 1: Level 7
RW
FSIT
0: Interrupt priority level 7 is used for normal
High-speed interrupt select bit
interrupt
1: Interrupt priority level 7 is used for high-speed
RW
interrupt⁽²⁾⁽³⁾
−
Unimplemented.
(b4)
Write 0. Read as undefined value.
−
DMAII
DMACII select bit⁽⁴⁾
0: Interrupt priority level 7 is used for interrupt
1: Interrupt priority level 7 is used for DMACII
RW
transfer⁽²⁾
−
(b7-b6)
Unimplemented.
Write 0. Read as undefined value.
−
NOTES:
1. The MCU exits stop or wait mode when an interrupt priority level of a requested interrupt is higher than a level set using bits
RLVL2 to RLVL0. Set bits RLVL2 to RLVL0 to the same value as IPL in the FLG register.
2. Do not set both the FSIT and DMAII bits to 1.
Set either the FSIT bit or the DMAII bit to 1 before setting bits ILVL2 to ILVL0 in the Interrupt Control Register to 111b.
3. Only one interrupt can have the interrupt priority level 7 when selecting the high-speed interrupt.
4. The DMAII bit is undefined after reset. To use interrupt priority level 7 for an interrupt, set it to 0 before setting the Interrupt
Control Register.
Figure 11.6 RLVL Register
11.6.2.3 Bits RLVL2 to RLVL0
When using an interrupt to exit wait mode or stop mode, refer to 9.5.2 Wait Mode and 9.5.3 Stop Mode for
details.
Rev.1.00 Jul 15, 2007 Page 105 of 352
REJ09B0385-0100