- 您現(xiàn)在的位置：買賣IC網 > PDF目錄359396 > VMX51C900 (Electronic Theatre Controls, Inc.) Versa Mix 8051 MCU with LCD Controller and ADC PDF資料下載
參數資料
| 型號： | VMX51C900 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Versa Mix 8051 MCU with LCD Controller and ADC |
| 中文描述： | 8051反之亦然混合與LCD控制器和ADC的微控制器 |
| 文件頁數： | 13/55頁 |
| 文件大?。?/td> | 2395K |
| 代理商： | VMX51C900 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁當前第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁
VMX51C900
______________________________________________________________________________________________
www.ramtron.com
page 13 of 55
Port 4
Port 4 consists of four pins and its SFR (P4) address is
0D8H.
T
ABLE
15:
P
ORT
4
(P4)
-
SFR
D8
H
7
6
Unused
Bit
Mnemonic
7
Unused
6
Unused
5
Unused
4
Unused
3
P4.3
2
P4.2
1
P4.1
0
P4.0
5
4
3
2
1
0
P4.3
P4.2
P4.1
P4.0
Description
-
-
-
-
Used to output the setting to pins P4.3,
P4.2, P4.1, P4.0 respectively.
Software Particulars Concerning the Ports
Some instructions allow the user to read the logic state
of the output pin, while others allow the user to read
the contents of the associated port register. These
instructions are called
read-modify-write
instructions. A
list of these instructions may be found in the table
below.
Upon execution of these instructions, the contents of
the port register (at least 1 bit) is modified. The other
read instructions take the present state of the input into
account. For example, the instruction ANL P3, #01h
obtains the value in the P3 register; performs the
desired logic operation with the constant 01h and
recopies the result into the P3 register. When users
want to take the present state of the inputs into
account, they must first read these states and perform
an AND operation of the value read and the constant
(see following example).
MOV A, P3; State of the inputs in the accumulator
ANL A, #01; AND operation between P3 and 01h
When the port is used as an output, the register
contains information on the state of the output pins.
Measuring the state of an output directly on the pin is
inaccurate because the electrical level depends mostly
on the type of charge that is applied to it. The functions
shown below take the value of the register rather than
that of the pin.
T
ABLE
16:
L
IST OF
I
NSTRUCTIONS THAT
R
EAD AND
M
ODIFY THE
P
ORT
U
SING
R
EGISTER
V
ALUES
Instruction Function
ANL
Logical AND ex: ANL P0, A
ORL
Logical OR ex: ORL P2, #01110000B
XRL
Exclusive OR ex: XRL P1, A
JBC
Jump if the bit of the port is set to 0
CPL
Complement one bit of the port
INC
Increment the port register by 1
DEC
Decrement the port register by 1
DJNZ
Decrement by 1 and jump if the result
is not equal to 0
MOV P.,C
Copy the held bit C to the port
CLR P.x
Set the port bit to 0
SETB P.x
Set the port bit to 1
Port Operation Timing
Writing to a Port (Output)
When an operation results in a modification of the
contents in a port register, the new value is placed at
the output of the D flip-flop during the last machine
cycle that the instruction needed to execute.
Reading a Port (Input)
In order to be sampled, the signal duration present on
the I/O inputs must be longer than Fosc/12.
相關PDF資料 |
PDF描述 |
|---|---|
| VN0104 | N-Channel Enhancement-Mode Vertical DMOS FET(擊穿電壓40V,N溝道增強型垂直DMOS結構場效應管) |
| VN0104 | N-Channel Enhancement-Mode Vertical DMOS FET |
| VN0104N3 | N-Channel Enhancement-Mode Vertical DMOS FET |
| VN0109NE | N-Channel Enhancement-Mode Vertical DMOS Power FETs Quad Array |
| VN0116ND | TRANSISTOR | MOSFET | N-CHANNEL | 160V V(BR)DSS | CHIP |
相關代理商/技術參數 |
參數描述 |
|---|---|
| VMX51C900-25-L | 功能描述:8位微控制器 -MCU 8K+256 25MHz 5V RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT |
| VMX51C900-25-LG | 功能描述:8位微控制器 -MCU 8K+256 25MHz 5V RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT |
| VMX51C900-25-L-G | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Versa Mix 8051 MCU with LCD Controller and ADC |
| VMX51C900-25-P | 功能描述:8位微控制器 -MCU 8K+256 25MHz 5V RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT |
| VMX51C900-25-PG | 功能描述:8位微控制器 -MCU 8K+256 25MHz 5V RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT |
發(fā)布緊急采購，3分鐘左右您將得到回復。