參數(shù)資料
型號: MB91121PFV
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 50 MHz, RISC MICROCONTROLLER, PQFP120
封裝: PLASTIC, LQFP-120
文件頁數(shù): 14/100頁
文件大?。?/td> 2316K
代理商: MB91121PFV
MB91121 Series
20
DS07-16303-4E
■ GENERAL-PURPOSE REGISTERS
R0 to R15 are general-purpose registers embedded on the CPU. These registers functions as an accumulator
and a memory access pointer (field for indicating address) .
Of the above 16 registers, following registers have special functions. To support the special functions, part of
the instruction set has been sophisticated to have enhanced functions.
R13 : Virtual accumulator (AC)
R14 : Frame pointer (FP)
R15 : Stack pointer (SP)
Upon reset, values in R0 to R14 are not fixed. Value in R15 is initialized to be 0000 0000H (SSP value) .
Register bank structure
32 bits
Initial value
R0
XXXX XXXXH
R1
R12
R13
AC (Accumulator)
R14
FP (Frame Pointer)
XXXX XXXXH
R15
SP (Stack Pointer)
0 0 0 0 0 0 0 0H
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