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參數(shù)資料
| 型號(hào)： | MB89F217PFM |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, FLASH, 12.5 MHz, MICROCONTROLLER, PQFP48 |
| 封裝： | PLASTIC, QFP-48 |
| 文件頁數(shù)： | 11/46頁 |
| 文件大小： | 473K |
| 代理商： | MB89F217PFM |
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MB89210 Series
19
2.
Register
The MB89210 series has two types of registers; the registers dedicated to specific purposes in the CPU and
the general-purpose registers. The dedicated registers are as follows:
Program counter (PC)
: 16-bit length, shows the locations where instructions are stored.
Accumulator (A)
: 16-bit length, a temporary memory register for calculation operations. In the
case of an 8-bit data processing instruction, the lower one byte is used.
Temporary accumulator (T)
: 16-bit length, performs calculations with the accumulator. In the case of an
8-bit data processing instruction, the lower one byte is used.
Index register (IX)
: 16-bit length, a register for index modification.
Extra pointer (EP)
: 16-bit length, apointer indicating memory addresses.
Stack pointer (SP)
: 16-bit length, indicates stack areas.
Program status (PS)
: 16-bit length, contains register pointer and condition code.
PS
PC
A
T
IX
EP
SP
RP
CCR
16 bits
: Program counter
: Accumulator
: Temporary accumulator
: Index register
: Extra pointer
: Stack pointer
: Program status
FFFDH
Initial value
Indeterminate
I-flag = 0, IL1, 0 = 11
Initial values for other bits are
indeterminate.
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