 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
T89C51CC02CA-RATIM Datasheet(PDF) 51 Page - ATMEL Corporation |
|
|
|||||||||||||||||||||||||||||
T89C51CC02CA-RATIM Datasheet(HTML) 51 Page - ATMEL Corporation |
|
|
51 / 156 page  51 AT/T89C51CC02 4126J–CAN–05/06 Serial I/O Port The T89C51CC02 I/O serial port is compatible with the I/O serial port in the 80C52. It provides both synchronous and asynchronous communication modes. It operates as a Universal Asynchronous Receiver and Transmitter (UART) in three full-duplex modes (Modes 1, 2 and 3). Asynchronous transmission and reception can occur simultaneously and at different baud rates Serial I/O port includes the following enhancements: • Framing error detection • Automatic address recognition Figure 20. Serial I/O Port Block Diagram Framing Error Detection Framing bit error detection is provided for the three asynchronous modes. To enable the framing bit error detection feature, set SMOD0 bit in PCON register. Figure 21. Framing Error Block Diagram When this feature is enabled, the receiver checks each incoming data frame for a valid stop bit. An invalid stop bit may result from noise on the serial lines or from simultaneous transmission by two CPUs. If a valid stop bit is not found, the Framing Error bit (FE) in SCON register bit is set. The software may examine the FE bit after each reception to check for data errors. Once set, only software or a reset clears the FE bit. Subsequently received frames with valid stop bits cannot clear the FE bit. When the FE feature is enabled, RI rises on the stop bit instead of the last data bit (See Figure 22 and Figure 23). Write SBUF RI TI SBUF Transmitter SBUF Receiver IB Bus Mode 0 Transmit Receive Shift register Load SBUF Read SBUF SCON reg Interrupt Request Serial Port TXD RXD RI TI RB8 TB8 REN SM2 SM1 SM0/FE IDL PD GF0 GF1 POF - SMOD0 SMOD1 To UART Framing Error Control SM0 to UART Mode Control Set FE bit if Stop bit is 0 (Framing Error) |
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link to Datasheet | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
