Datasheet

www.ti.com MSP430 and MSP430X Instructions
4.5.2.7 MSP430X Instruction Execution
The number of CPU clock cycles required for an MSP430X instruction depends on the instruction format
and the addressing modes used, not the instruction itself. The number of clock cycles refers to MCLK.
4.5.2.7.1 MSP430X Format II (Single-Operand) Instruction Cycles and Lengths
Table 4-17 lists the length and the CPU cycles for all addressing modes of the MSP430X extended single-
operand instructions.
Table 4-17. MSP430X Format II Instruction Cycles and Length
Execution Cycles/Length of Instruction (Words)
Instruction
Rn @Rn @Rn+ #N X(Rn) EDE &EDE
RRAM n/1 – – – – – –
RRCM n/1 – – – – – –
RRUM n/1 – – – – – –
RLAM n/1 – – – – – –
PUSHM 2+n/1 – – – – – –
PUSHM.A 2+2n/1 – – – – – –
POPM 2+n/1 – – – – – –
POPM.A 2+2n/1 – – – – – –
CALLA 4/1 5/1 5/1 4/2 6
(1)
/2 6/2 6/2
RRAX(.B) 1+n/2 4/2 4/2 – 5/3 5/3 5/3
RRAX.A 1+n/2 6/2 6/2 – 7/3 7/3 7/3
RRCX(.B) 1+n/2 4/2 4/2 – 5/3 5/3 5/3
RRCX.A 1+n/2 6/2 6/2 – 7/3 7/3 7/3
PUSHX(.B) 4/2 4/2 4/2 4/3 5
(1)
/3 5/3 5/3
PUSHX.A 5/2 6/2 6/2 6/3 7
(1)
/3 7/3 7/3
POPX(.B) 3/2 – – – 5/3 5/3 5/3
POPX.A 4/2 – – – 7/3 7/3 7/3
(1)
Add one cycle when Rn = SP
157
SLAU144J–December 2004–Revised July 2013 CPUX
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