參數(shù)資料
型號(hào)： MB89PV190ACF
廠商： FUJITSU LTD
元件分類(lèi)： 微控制器/微處理器
英文描述： 8-bit Proprietary Microcontroller
中文描述： 8-BIT, 4.2 MHz, MICROCONTROLLER, PQFP48
封裝： CERAMIC, MQFP-48
文件頁(yè)數(shù)： 18/47頁(yè)
文件大?。?/td> 634K
代理商： MB89PV190ACF
18
MB89190/190A Series
2. Registers
The F
2
MC-8L family has two types of registers; dedicated hardware registers and general-purpose memory
registers. The following dedicated registers are provided:
Program counter (PC):
A 16-bit-long register for indicating the instruction storage positions
Accumulator (A):
A 16-bit-long temporary register for arithmetic operations, etc. When the
instruction is an 8-bit data processing instruction, the lower byte is used.
Temporary accumulator (T): A 16-bit-long register which is used for arithmetic operations with the accumulator.
When the instruction is an 8-bit data processing instruction, the lower byte is
used.
Index register (IX):
A 16-bit-long register for index modification
Extra pointer (EP) :
A 16-bit-long pointer for indicating a memory address
Stack pointer (SP) :
A 16-bit-long pointer for indicating a stack area
Program status (PS) :
A 16-bit-long register for storing a register pointer, a condition code
The PS can further be divided into higher 8 bits for use as a register bank pointer (RP) and the lower 8 bits for
use as a condition code register (CCR) (see the diagram below).
PC
A
T
IX
EP
SP
PS
16 bits
: Program counter
: Accumulator
: Temporary accumulator
: Index register
: Extra pointer
: Stack pointer
: Program status
FFFD
H
Indeterminate
Indeterminate
Indeterminate
Indeterminate
Indeterminate
I-flag = 0, IL1, 0 = 11
The other bit values are indeterminate
Initial value
Structure of the Program Status Register
Vacancy
H
I
IL1, 0
N
Z
V
C
5
4
RP
PS
10
9
8
7
6
3
2
1
0
15
14
13
12
11
RP
CCR
Vacancy Vacancy
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