MSP430F530x, MSP430F5310
SLAS677B –SEPTEMBER 2010–REVISED MARCH 2011
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SHORT-FORM DESCRIPTION
CPU
The MSP430 CPU has a 16-bit RISC architecture that is highly transparent to the application. All operations,
other than program-flow instructions, are performed as register operations in conjunction with seven addressing
modes for source operand and four addressing modes for destination operand.
The CPU is integrated with 16 registers that provide reduced instruction execution time. The register-to-register
operation execution time is one cycle of the CPU clock.
Four of the registers, R0 to R3, are dedicated as program counter, stack pointer, status register, and constant
generator, respectively. The remaining registers are general-purpose registers.
Peripherals are connected to the CPU using data, address, and control buses, and can be handled with all
instructions.
The instruction set consists of the original 51 instructions with three formats and seven address modes and
additional instructions for the expanded address range. Each instruction can operate on word and byte data.
Program Counter
PC/R0
SP/R1
SR/CG1/R2
CG2/R3
R4
Stack Pointer
Status Register
Constant Generator
General-Purpose Register
General-Purpose Register
General-Purpose Register
General-Purpose Register
General-Purpose Register
General-Purpose Register
General-Purpose Register
General-Purpose Register
General-Purpose Register
General-Purpose Register
General-Purpose Register
General-Purpose Register
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
12
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