參數(shù)資料
型號(hào)： 89C54
廠商： NXP Semiconductors N.V.
英文描述： 80C51 8-bit microcontroller family 4K/8K/16K/32K Flash
中文描述： 80C51的8位單片機(jī)系列4K/8K/16K/32K閃光
文件頁(yè)數(shù)： 15/32頁(yè)
文件大小： 212K
代理商： 89C54
Philips Semiconductors
Product specification
89C51/89C52/89C54/89C58
80C51 8-bit microcontroller family
4K/8K/16K/32K Flash
1999 Oct 27
15
SCON
Address = 98H
Reset Value = 0000 0000B
SM0/FE
7
SM1
6
SM2
5
REN
4
TB8
3
RB8
2
Tl
1
Rl
0
Bit Addressable
(SMOD0 = 0/1)*
Symbol
Function
FE
Framing Error bit. This bit is set by the receiver when an invalid stop bit is detected. The FE bit is not cleared by valid
frames but should be cleared by software. The SMOD0 bit must be set to enable access to the FE bit.
Serial Port Mode Bit 0, (SMOD0 must = 0 to access bit SM0)
Serial Port Mode Bit 1
SM0
SM1
Mode
Description
Baud Rate**
0
0
0
shift register
f
OSC
/12
0
1
1
8-bit UART
variable
1
0
2
9-bit UART
f
OSC
/64 or f
OSC
/32
1
1
3
9-bit UART
variable
Enables the Automatic Address Recognition feature in Modes 2 or 3. If SM2 = 1 then Rl will not be set unless the
received 9th data bit (RB8) is 1, indicating an address, and the received byte is a Given or Broadcast Address.
In Mode 1, if SM2 = 1 then Rl will not be activated unless a valid stop bit was received, and the received byte is a
Given or Broadcast Address. In Mode 0, SM2 should be 0.
Enables serial reception. Set by software to enable reception. Clear by software to disable reception.
The 9th data bit that will be transmitted in Modes 2 and 3. Set or clear by software as desired.
In modes 2 and 3, the 9th data bit that was received. In Mode 1, if SM2 = 0, RB8 is the stop bit that was received.
In Mode 0, RB8 is not used.
Transmit interrupt flag. Set by hardware at the end of the 8th bit time in Mode 0, or at the beginning of the stop bit in the
other modes, in any serial transmission. Must be cleared by software.
Receive interrupt flag. Set by hardware at the end of the 8th bit time in Mode 0, or halfway through the stop bit time in
the other modes, in any serial reception (except see SM2). Must be cleared by software.
SM0
SM1
SM2
REN
TB8
RB8
Tl
Rl
NOTE:
*SMOD0 is located at PCON6.
**f
OSC
= oscillator frequency
SU00043
Bit:
Figure 7. SCON: Serial Port Control Register
相關(guān)PDF資料
PDF描述
89C51 80C51 8-bit microcontroller family 4K Flash(80C51八位微控制器系列 4K 閃速存儲(chǔ)器)
89C52 80C51 8-bit microcontroller family8KFlash(80C51八位微控制器系列 8K閃速存儲(chǔ)器)
89C58 80C51 8-bit microcontroller family 4K/8K/16K/32K Flash
89CNQ135
89CNQ150
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
89C55 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-Bit Microcontroller with 20K Bytes Flash
89C58 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80C51 8-bit microcontroller family 4K/8K/16K/32K Flash
89C59 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU
89C61X2 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80C51 8-bit Flash microcontroller family
89C664HFA 制造商: 功能描述: 制造商:undefined 功能描述:
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