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参数资料
| 型号： | MB89P899PF |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PQFP100 |
| 封装： | PLASTIC, QFP-100 |
| 文件页数： | 10/45页 |
| 文件大小： | 453K |
| 代理商： | MB89P899PF |
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MB89890 Series
18
2.
Registers
The F2MC-8L family has two types of registers; dedicated hardware registers in the CPU 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
FFFDH
indeterminate
I-flag = 0, IL1, 0 = 11
The other bit values are indeterminate.
Initial value
H
I
IL1, 0
N
Z
VC
54
RP
PS
10
9876
3210
15
14
13
12
11
RP
CCR
Vacancy Vacancy Vacancy
Structure of the Program Status Register
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| MB89P915 | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
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