CC2430 Datasheet, PDF (52/234 Pages) Texas Instruments – A True System-on-Chip solution for 2.4 GHz IEEE 802.15.4 / ZigBee-TM

CC2430
Instruction
CY
OV
AC
ADD
x
x
x
ADDC
x
x
x
SUBB
x
x
x
MUL
0
x
-
DIV
0
x
-
DA
x
-
-
RRC
x
-
-
RLC
x
-
-
SETB C
1
-
-
CLR C
x
-
-
CPL C
x
-
-
ANL C,bit
x
-
-
ANL C,/bit
x
-
-
ORL C,bit
x
-
-
ORL C,/bit
x
-
-
MOV C,bit
x
-
-
CJNE
x
-
-
“0”=set to 0, “1”=set to 1, “x”=set to 0/1, “-“=not affected
Table 28: Instructions that affect flag settings
12.7 Interrupts
The CPU has 18 interrupt sources. Each
source has its own request flag located in a set
of Interrupt Flag SFR registers. Each interrupt
requested by the corresponding flag can be
individually enabled or disabled. The
definitions of the interrupt sources and the
interrupt vectors are given in Table 29.
The interrupts are grouped into a set of priority
level groups with selectable priority levels.
The interrupt enable registers are described in
section 12.7.1 and the interrupt priority settings
are described in section 12.7.3 on page 60.
12.7.1 Interrupt Masking
Each interrupt can be individually enabled or
disabled by the interrupt enable bits in the
Interrupt Enable SFRs IEN0, IEN1 and IEN2.
The Interrupt Enable SFRs are described
below and summarized in Table 29.
Note that some peripherals have several
events that can generate the interrupt request
associated with that peripheral. This applies to
Port 0, Port 1, Port 2, DMA, Timer 1, Timer 3 ,
Timer 4 and Radio. These peripherals have
interrupt mask bits for each internal interrupt
source in the corresponding SFR registers.
In order to use any of the interrupts in the
CC2430 , the following steps must be taken
1. Enable global interrupt by setting the
EA bit in IEN0 to 1
2. Set the corresponding individual,
interrupt enable bit in the IEN0, IEN1
or IEN2 registers to 1.
3. Set individual interrupt enable bit in
the peripherals SFR register, if any.
4. Begin the interrupt service routine at
the corresponding vector address of
that interrupt. See Table 29 for
addresses.
CC2430 PRELIMINARY Data Sheet (rev. 1.03) SWRS036A
Page 52 of 232