R01UH0136EJ0210 Rev.2.10
Page 194 of 800
Jul 31, 2012
M16C/64A Group
14. Interrupts
14.2.1
Processor Mode Register 2 (PM2)
Set the PRC1 bit in the PRCR register to 1 (write enabled) before rewriting this register.
PM24 (
NMI
interrupt enable bit) (b4)
Once this bit is set to 1, it cannot be set to 0 by a program (writing 0 has no effect).
b7
1
0
b6 b5 b4
b1
b2
b3
Processor Mode Register 2
Symbol
PM2
Address
001Eh
Bit Symbol
Bit Name
RW
—
(b0)
Reset Value
XX00 0X01b
b0
Function
Reserved bit
—
(b2)
—
(b3)
Set to 1.
PM24
PM25
Set to 0
0 : NMI interrupt disabled
1 : NMI interrupt enabled
Reserved bit
NMI interrupt enable bit
RW
RW
RW
PM21
System clock protection bit
0 : Clock is protected by PRCR register
1 : Clock change disabled
RW
RW
No register bit. If necessary, set to 0. The read value is undefined.
—
—
(b7-b6)
No register bits. If necessary, set to 0. The read value is undefined.
—
0 : Not provided
1 : Provided
Peripheral clock fC provide bit
Содержание M16C/60 Series
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