參數(shù)資料
型號: MB91F356BPMT
元件分類: 微控制器/微處理器
英文描述: RISC MICROCONTROLLER, PQFP176
封裝: 24 X 24 MM, 1.70 MM HEIGHT, 0.50 MM PPITCH, LEAD FREE, PLASTIC, LQFP-176
文件頁數(shù): 68/140頁
文件大小: 3803K
代理商: MB91F356BPMT
MB91350A Series
DS07-16503-5E
33
4.
Registers
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. Some instructions have
been enhanced for this purpose.
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.
The undefined bits in the following illustration are all reserved bits. Reading these bits always returns “0”. Writing
to them has no effect.
R0
R1
R12
R13
R14
R15
AC
FP
SP
XXXX XXXXH
0000 0000 H
32-bit
[Initial Value]
PS
bit 31
bit 20
bit 16
ILM
SCR
CCR
bit 10
bit 7
bit 8
bit 0
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