參數(shù)資料
型號(hào)： 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(yè)數(shù)： 20/55頁(yè)
文件大小： 2395K
代理商： VMX51C900
VMX51C900
______________________________________________________________________________________________
www.ramtron.com
page 20 of 55
Timer 2 Baud Rate Generator Mode
Timer 2 can be configured as a UART baud rate
generator. This mode is activated when RCLK is set to
1 and/or TCLK is set to 1. This mode will be described
in the serial port section.
F
IGURE
11:
T
IMER
2
IN AUTOMATIC
B
AUD
G
ENERATOR
M
ODE
F
OSC
÷2
TIMER
COUNTER
C/T2
0
1
T2 pin
TR2
T2EX pin
0
7
0
7
0
7
0
7
EXF2
EXEN2
RCAP2L
RCAP2H
TL2
TH2
÷2
÷16
÷16
SMOD
0
1
Timer 1 Overflow
0
1
0
1
TCLK
RCLK
TX Clock
RX Clock
Timer 2
Interrupt
Request
UART Serial Port
The serial port on the VMX51C900 can operate in full
duplex; in other words, it can transmit and receive data
simultaneously. Different communication speeds can
be configured for transmission and reception by
assigning one timer for transmission and another for
reception.
The VMX51C900 serial port includes a double
buffering feature, such that the serial port can begin
reception of a byte even if the processor has not
retrieved the last byte from the receive register.
However, if the previously received byte has not been
read by the time reception of the next byte is complete,
the byte present in the receive buffer will be lost.
The SBUF register provides access to the transmit and
receive registers of the serial port. Reading from the
SBUF register will access the receive register, while a
write to the SBUF loads the transmit register.
UART Control Register
The SCON (serial port control) register contains
control and status information, and includes the 9
th
data bit for transmit/receive (TB8/RB8 if required),
mode selection bits and serial port interrupt bits (TI
and RI).
T
ABLE
22:
S
ERIAL
P
ORT
C
ONTROL
R
EGISTER
(SCON)
–
SFR
98
H
7
6
5
SM0
SM1
SM2
Bit
Mnemonic
Description
7
SM0
Bit to select mode of operation (see table
below)
6
SM1
Bit to select mode of operation (see table
below)
5
SM2
Multiprocessor communication is possible
in Modes 2 and 3.
In Modes 2 or 3 if SM2 is set to 1, RI will
not be activated if the received 9
data bit
(RB8) is 0.
In Mode 1, if SM2 = 1 then RI will not be
activated if a valid stop bit was not
received.
4
REN
Serial Reception Enable Bit
This bit must be set by software and
cleared by software.
1: Serial reception enabled
0: Serial reception disabled
3
TB8
9
data bit transmitted in Modes 2 and 3
This bit must be set by software and
cleared by software.
2
RB8
9
th
data bit received in Modes 2 and 3.
In Mode 1, if SM2 = 0, RB8 is the stop bit
that was received.
In Mode 0, this bit is not used.
This bit must be cleared by software.
1
TI
Transmission Interrupt flag.
Automatically set to 1 when:
The 8
bit has been sent in Mode 0.
Automatically set to 1 when the stop bit
has been sent in the other modes.
This bit must be cleared by software.
0
RI
Reception Interrupt flag
Automatically set to 1 when:
The 8
bit has been received in Mode 0.
Automatically set to 1 when the stop bit
has been sent in the other modes (see
SM2 exception).
This bit must be cleared by software.
4
3
2
1
TI
0
RI
REN
TB8
RB8
相關(guān)PDF資料
PDF描述
VN0104 N-Channel Enhancement-Mode Vertical DMOS FET(擊穿電壓40V,N溝道增強(qiáng)型垂直DMOS結(jié)構(gòu)場(chǎng)效應(yīng)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(guān)代理商/技術(shù)參數(shù)
參數(shù)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(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) 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(fēng)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(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT
VMX51C900-25-L-G 制造商:未知廠家 制造商全稱(chēng):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(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) 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(fēng)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(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*