- 您现在的位置：买卖IC网 > PDF目录361590 > UPSD3212AV-24U6T (意法半导体) Flash Programmable System Devices with 8032 MCU with USB and Programmable Logic PDF资料下载
参数资料
| 型号： | UPSD3212AV-24U6T |
| 厂商： | 意法半导体 |
| 英文描述： | Flash Programmable System Devices with 8032 MCU with USB and Programmable Logic |
| 中文描述： | 闪存可编程系统设备与8032具有USB和可编程逻辑控制器 |
| 文件页数： | 20/163页 |
| 文件大小： | 2844K |
| 代理商： | UPSD3212AV-24U6T |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页当前第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页第132页第133页第134页第135页第136页第137页第138页第139页第140页第141页第142页第143页第144页第145页第146页第147页第148页第149页第150页第151页第152页第153页第154页第155页第156页第157页第158页第159页第160页第161页第162页第163页
uPSD3212A, uPSD3212C, uPSD3212CV
20/163
Data Transfers
Internal RAM.
Table
6
shows the menu of in-
structions that are available for moving data
around within the internal memory spaces, and the
addressing modes that can be used with each
one. The MOV <dest>, <src> instruction allows
data to be transferred between any two internal
RAM or SFR locations without going through the
Accumulator. Remember, the Upper 128 bytes of
data RAM can be accessed only by indirect ad-
dressing, and SFR space only by direct address-
ing.
Note:
In uPSD321x Devices, the stack resides in
on-chip RAM, and grows upwards. The PUSH in-
struction first increments the Stack Pointer (SP),
then copies the byte into the stack. PUSH and
POP use only direct addressing to identify the byte
being saved or restored, but the stack itself is ac-
cessed by indirect addressing using the SP regis-
ter. This means the stack can go into the Upper
128 bytes of RAM, if they are implemented, but not
into SFR space.
The Data Transfer instructions include a 16-bit
MOV that can be used to initialize the Data Pointer
(DPTR) for look-up tables in Program Memory.
The XCH A, <byte> instruction causes the Accu-
mulator and ad-dressed byte to exchange data.
The XCHD A, @Ri instruction is similar, but only
the low nibbles are involved in the exchange. To
see how XCH and XCHD can be used to facilitate
data manipulations, consider first the problem of
shifting and 8-digit BCD number two digits to the
right.
Table 8., page 21
shows how this can be
done using XCH instructions. To aid in under-
standing how the code works, the contents of the
registers that are holding the BCD number and the
content of the Accumulator are shown alongside
each instruction to indicate their status after the in-
struction has been executed.
After the routine has been executed, the Accumu-
lator contains the two digits that were shifted out
on the right. Doing the routine with direct MOVs
uses 14 code bytes. The same operation with
XCHs uses only 9 bytes and executes almost
twice as fast. To right-shift by an odd number of
digits, a one-digit must be executed.
Table
9., page 21
shows a sample of code that will right-
shift a BCD number one digit, using the XCHD in-
struction. Again, the contents of the registers hold-
ing the number and of the accumulator are shown
alongside each instruction.
Table 6. Data Transfer Instructions that Access Internal Data Memory Space
Mnemonic
Operation
Addressing Modes
Dir.
Ind.
Reg.
Imm
MOV A,<src>
A = <src>
X
X
X
X
MOV <dest>,A
<dest> = A
X
X
X
MOV <dest>,<src>
<dest> = <src>
X
X
X
X
MOV DPTR,#data16
DPTR = 16-bit immediate constant
X
PUSH <src>
INC SP; MOV “@SP”,<src>
X
POP <dest>
MOV <dest>,”@SP”; DEC SP
X
XCH A,<byte>
Exchange contents of A and <byte>
X
X
X
XCHD A,@Ri
Exchange low nibbles of A and @Ri
X
相关PDF资料 |
PDF描述 |
|---|---|
| UPSD3212AV-40T6T | Flash Programmable System Devices with 8032 MCU with USB and Programmable Logic |
| UPSD3212AV-40U6T | Flash Programmable System Devices with 8032 MCU with USB and Programmable Logic |
| UPSD3212CV-24T6 | Flash Programmable System Devices with 8032 MCU with USB and Programmable Logic |
| UPSD3212CV-24U6 | Flash Programmable System Devices with 8032 MCU with USB and Programmable Logic |
| uPSD3212C | Flash Programmable System Devices with 8032 Microcontroller Core and 16Kbit SRAM(带8032微控制器内核和16Kbit SRAM的FLASH可编程系统器件) |
相关代理商/技术参数 |
参数描述 |
|---|---|
| UPSD3212AV-40T6T | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 MCU with USB and Programmable Logic |
| UPSD3212AV-40U6T | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 MCU with USB and Programmable Logic |
| UPSD3212C | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 MCU with USB and Programmable Logic |
| UPSD3212C-24T1T | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core and 16Kbit SRAM |
| UPSD3212C-24T6T | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 MCU with USB and Programmable Logic |
发布紧急采购，3分钟左右您将得到回复。