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參數(shù)資料
| 型號： | 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 |
| 文件頁數(shù)： | 23/112頁 |
| 文件大?。?/td> | 605K |
| 代理商： | UPD70741 |
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μ
PD70741
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3.5 Data Types
3.5.1 Data types
The data types supported by the V821 are as follows:
Integer (8, 16, 32 bits)
Unsigned integer (8, 16, 32 bits)
Bit string
Single-precision floating-point data (32 bits)
(1) Data type and addressing
The V821 uses the little-endian data addressing. In this addressing, if fixed-length data is located in a memory
area, the data must be either of the data types shown below.
(a) Byte
A byte is consecutive 8-bit data whose first-bit address is aligned to a byte boundary. Each bit in a byte is
numbered from 0 to 7: LSB (the least significant bit) is bit 0 and MSB (the most significant bit) is bit 7. To
access a byte, specify address A. (See diagram below.)
(b) Halfword
A halfword is consecutive 16-bit (= 2 bytes) data whose first-bit address is aligned to a halfword boundary.
Each bit in a halfword is numbered from 0 to 15: LSB (the least significant bit) is bit 0 and MSB (the most
significant bit) is bit 15. To access a halfword, specify the address A only (lowest bit must be 0).
(c) Word/short real
A word, also called short real, is consecutive 32-bit (= 4 bytes) data whose first-bit address is aligned to a
word boundary. Each bit in a word is numbered from 0 to 31: LSB (the least significant bit) is bit 0 and MSB
(the most significant bit) is bit 31. To access a word or short real, specify the address A only (lower two bits
must be 0).
15
8 7
A + 1
0
A
7
0
A
31
24 23
A + 3
16 15
A + 2
8 7
A + 1
0
A
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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