参数资料
型号: MB89PV950CF
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 5 MHz, MICROCONTROLLER, CQFP64
封装: 0.80 MM PITCH, PIGGY BACK, MQFP-64
文件页数: 25/110页
文件大小: 619K
代理商: MB89PV950CF
HARDWARE CONFIGURATION
2– 6
2.1.3 Internal Registers in CPU
The MB89950 series of microcontrollers have dedicated registers in the
CPU and general-purpose registers in memory. The types of dedicated
registers are as follows.
Program counter (PC)
16-bit length register indicating the location
where instructions are stored.
Accumulator (A)
16-bit length register storing results of
operations temporarily. The lower one byte
is used to execute 8-bit data processing
instructions.
Temporary accumulator (T) 16-bit length register where the operations
are performed between this register and the
accumulator. The lower one byte is used to
execute 8-bit data processing instructions.
Index register (IX)
16-bit length register for index modification.
Extra pointer (EP)
16-bit length register for indicating memory
address.
Stack pointer (SP)
16-bit length register indicating stack area.
Processor status (PS)
16-bit length register where register
pointers and condition codes are stored.
CPU
P C
A
T
IX
EP
SP
PS
16 bits
Program counter
Accumulator
Temporary accumulator
Index register
Extra pointer
Stack pointer
Processor status
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