参数资料
型号: MB91F346BPFT-GE1
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 50 MHz, RISC MICROCONTROLLER, PQFP100
封装: 12 X 12 MM, 1.20 MM HEIGHT, 0.40 MM PITCH, PLASTIC, TQFP-100
文件页数: 20/72页
文件大小: 657K
代理商: MB91F346BPFT-GE1
MB91345 Series
27
4.
Register
General purpose registers
Registers R0 to R15 are general purpose registers. The registers are used as the accumulator and memory
access pointers for CPU operations.
Of these 16 registers, the registers listed below are intended for special applications, for which some instructions
are enhanced.
R13 : Virtual accumulator
R14 : Frame pointer
R15 : Stack pointer
The initial values of R0 to R14 after a reset are indeterminate. R15 is initialized to 00000000H (SSP value) .
PS (Program Status)
This register holds the program status and is divided into the ILM, SCR, and CCR.
All of undefined bits are reserved bits. Reading these bits always returns “0”.
Writing to them has no effect.
CCR (Condition Code Register)
S : Stack flag. Cleared to “0” at a reset.
R0
R1
R12
R13
R14
R15
AC
FP
SP
XXXX XXXXH
0000 0000 H
32-bit
Initial Value
PS
bit31
bit20
bit16
ILM
SCR
CCR
bit10
bit7
bit8
bit0
Initial Value
- - 00XXXXB
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
SI
N
Z
V
C
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