參數(shù)資料
型號: SAB80C517A-N18-T3
廠商: INFINEON TECHNOLOGIES AG
元件分類: 微控制器/微處理器
英文描述: 8-BIT, 18 MHz, MICROCONTROLLER, PQCC84
封裝: PLASTIC, LCC-84
文件頁數(shù): 11/137頁
文件大?。?/td> 2089K
代理商: SAB80C517A-N18-T3
Device Specification
Semiconductor Group
7-46
Multiplication/Division Unit
This on-chip arithmetic unit provides fast 32-bit division, 16-bit multiplication as well as shift
and normalize features. All operations are integer operation.
The MDU consists of six registers used for operands and results and one control register.
Operation of the MDU can be divided in three phases:
Operation of the MDU
To start an operation, register MD0 to MD5 (or ARCON) must be written to in a certain se-
quence according to table 5 or 6. The order the registers are accessed determines the type of
the operation. A shift operation is started by a final write operation to register ARCON (see also
the register description).
Operation
Result
Remainder
Execution Time
32-bit/16-bit
32-bit
16-bit
6
t cy 1)
16-bit/16-bit
16-bit
4
t cy
16-bit *16-bit
32-bit
–4
t cy
32-bit normalize
6
t cy 2)
32-bit shift left/right
6
t cy 2)
1)
1
tcy = 1 s @ 12 MHz oscillator frequency.
2)
The maximal shift speed is 6 shifts/cycle.
相關(guān)PDF資料
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