參數(shù)資料
型號(hào)： UPD70741
廠商： NEC Corp.
元件分類： 16位微控制器
英文描述： V821TM 32-/16-BIT MICROPROCESSOR
中文描述： V821TM 32-/16-BIT微處理器
文件頁(yè)數(shù)： 24/112頁(yè)
文件大?。?/td> 605K
代理商： UPD70741
μ
PD70741
24
(2) Integer
In the V821, all integers are expressed in the two’s-complement binary notation, and are composed of either 8
bits, 16 bits, or 32 bits. Regardless of the data length, bit 0 is the least significant bit, and higher-numbered bits
express higher digits of the integer with the highest bit expressing its sign.
Data length
Range
Byte
Halfword
Word
8 bits
16 bits
32 bits
-128 to +127
-32 768 to +32 767
-2 147 483 648 to +2 147 483 647
(3) Unsigned integer
An unsigned integer is either zero or a positive integer unlike the integer explained in (2) which can be negative
as well as zero and positive. Unsigned integers are expressed in the binary notation in the same way as integers,
and are either 8 bits, 16 bits, or 32 bits long. Regardless of the data length, the bit assignments are the same
as in the case of integers except that unsigned integers do not include a sign bit; the highest bit is also a part
of the integer.
Data length
Range
Byte
Halfword
Word
8 bits
16 bits
32 bits
0 to 255
0 to 65 535
0 to 4 294 967 295
(4) Bit string
A bit string is a type of data whose bit length is variable from 0 to 2
32
- 1. To specify a bit-string data, define
the following three attributes.
A : address of the string data’s first word (lower two bits must be 0.)
B : in-word bit offset in the string data (0 to 31)
M : bit length of the string data (0 to 2
32
- 1)
The above three attributes may vary depending on the bit-string data manipulation direction: upward or downward,
as shown below. The former is the direction from lower addresses to higher addresses while the latter is the direction
from higher to lower addresses.
相關(guān)PDF資料
PDF描述
UPD70741GC-25-8EU V821TM 32-/16-BIT MICROPROCESSOR
UPD70F3003A V853TM 32-/16-BIT SINGLE-CHIP MICROCONTROLLER
UPD70F3003AGC-25-8EU Circular Connector; No. of Contacts:24; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:25; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:25-24 RoHS Compliant: No
UPD70F3025AGC-25-8EU V853TM 32-/16-BIT SINGLE-CHIP MICROCONTROLLER
UPD70F3003AGC-33-8EU LJT 29C 29#16 PIN PLUG
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UPD70741GC-25-8EU 制造商:NEC 制造商全稱:NEC 功能描述:V821TM 32-/16-BIT MICROPROCESSOR
UPD70742GD-25-LML 制造商:未知廠家 制造商全稱:未知廠家 功能描述:32-Bit Microprocessor
UPD70F30025AGC-25 制造商:NEC 制造商全稱:NEC 功能描述:32-bit RISC Microcontrollers
UPD70F30025AGC-33 制造商:NEC 制造商全稱:NEC 功能描述:32-bit RISC Microcontrollers
UPD70F3003A 制造商:NEC 制造商全稱:NEC 功能描述:V853TM 32-/16-BIT SINGLE-CHIP MICROCONTROLLER
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