Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

AT90S8535 Datasheet(PDF) 61 Page - ATMEL Corporation

Part # AT90S8535
Description  8-bit Microcontroller with 8K Bytes In-System Programmable Flash
Download  127 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT90S8535 Datasheet(HTML) 61 Page - ATMEL Corporation

Back Button AT90S8535 Datasheet HTML 57Page - ATMEL Corporation AT90S8535 Datasheet HTML 58Page - ATMEL Corporation AT90S8535 Datasheet HTML 59Page - ATMEL Corporation AT90S8535 Datasheet HTML 60Page - ATMEL Corporation AT90S8535 Datasheet HTML 61Page - ATMEL Corporation AT90S8535 Datasheet HTML 62Page - ATMEL Corporation AT90S8535 Datasheet HTML 63Page - ATMEL Corporation AT90S8535 Datasheet HTML 64Page - ATMEL Corporation AT90S8535 Datasheet HTML 65Page - ATMEL Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 61 / 127 page
background image
61
AT90S/LS8535
1041H–11/01
1 denote the first zero-sample. Following the 1-to-0 transition, the receiver samples the
RXD pin at samples 8, 9 and 10. If two or more of these three samples are found to be
logical “1”s, the start bit is rejected as a noise spike and the receiver starts looking for
the next 1-to-0 transition.
If however, a valid start bit is detected, sampling of the data bits following the start bit is
performed. These bits are also sampled at samples 8, 9 and 10. The logical value found
in at least two of the three samples is taken as the bit value. All bits are shifted into the
Transmitter Shift register as they are sampled. Sampling of an incoming character is
shown in Figure 43.
Figure 43. Sampling Received Data
When the stop bit enters the receiver, the majority of the three samples must be one to
accept the stop bit. If two or more samples are logical “0”s, the Framing Error (FE) flag in
the UART Status Register (USR) is set. Before reading the UDR register, the user
should always check the FE bit to detect framing errors.
Whether or not a valid stop bit is detected at the end of a character reception cycle, the
data is transferred to UDR and the RXC flag in USR is set. UDR is in fact two physically
separate registers, one for transmitted data and one for received data. When UDR is
read, the Receive Data register is accessed and when UDR is written, the Transmit
Data register is accessed. If 9-bit data word is selected (the CHR9 bit in the UART Con-
trol Register, UCR is set), the RXB8 bit in UCR is loaded with bit 9 in the Transmit Shift
register when data is transferred to UDR.
If, after having received a character, the UDR register has not been read since the last
receive, the OverRun (OR) flag in UCR is set. This means that the last data byte shifted
into the shift register could not be transferred to UDR and has been lost. The OR bit is
buffered and is updated when the valid data byte in UDR is read. Thus, the user should
always check the OR bit after reading the UDR register in order to detect any overruns if
the baud rate is high or CPU load is high.
When the RXEN bit in the UCR register is cleared (zero), the receiver is disabled. This
means that the PD0 pin can be used as a general I/O pin. When RXEN is set, the UART
Receiver will be connected to PD0, which is forced to be an input pin regardless of the
setting of the DDD0 bit in DDRD. When PD0 is forced to input by the UART, the
PORTD0 bit can still be used to control the pull-up resistor on the pin.
When the CHR9 bit in the UCR register is set, transmitted and received characters are
9 bits long, plus start and stop bits. The ninth data bit to be transmitted is the TXB8 bit in
UCR register. This bit must be set to the wanted value before a transmission is initiated
by writing to the UDR register. The ninth data bit received is the RXB8 bit in the UCR
register.


Similar Part No. - AT90S8535

ManufacturerPart #DatasheetDescription
logo
ATMEL Corporation
AT90S8535 ATMEL-AT90S8535 Datasheet
482Kb / 10P
   8-Bit Microcontroller with 4K/8K Bytes In-System Programmable Flash
logo
List of Unclassifed Man...
AT90S8535 ETC2-AT90S8535 Datasheet
75Kb / 2P
   AVR-P40B-8535 PROTOTYPE BOARD WITH 10 PIN ICSP CONNECTOR FOR AT90S8535 AVR MICROCONTROLLERS
logo
ATMEL Corporation
AT90S8535 ATMEL-AT90S8535 Datasheet
2Mb / 61P
   AVR Studio Compatible
Rev. 1925C-AVR-3/03
AT90S8535-8AC ATMEL-AT90S8535-8AC Datasheet
482Kb / 10P
   8-Bit Microcontroller with 4K/8K Bytes In-System Programmable Flash
AT90S8535-8AI ATMEL-AT90S8535-8AI Datasheet
482Kb / 10P
   8-Bit Microcontroller with 4K/8K Bytes In-System Programmable Flash
More results

Similar Description - AT90S8535

ManufacturerPart #DatasheetDescription
logo
ATMEL Corporation
ATMEGA48V ATMEL-ATMEGA48V_06 Datasheet
3Mb / 374P
   8-bit Microcontroller with 8K Bytes In-System Programmable Flash
ATMEGA88 ATMEL-ATMEGA88_1 Datasheet
369Kb / 10P
   8-bit Microcontroller with 8K Bytes In-System Programmable Flash
AT89LP51 ATMEL-AT89LP51 Datasheet
4Mb / 113P
   8-bit Microcontroller with 8K Bytes In-System Programmable Flash
ATMEGA8515 ATMEL-ATMEGA8515_10 Datasheet
1Mb / 257P
   8-bit Microcontroller with 8K Bytes In-System Programmable Flash
AT89S52 ATMEL-AT89S52_08 Datasheet
576Kb / 38P
   8-bit Microcontroller with 8K Bytes In-System Programmable Flash
ATMEGA88 ATMEL-ATMEGA88 Datasheet
210Kb / 20P
   8-bit Microcontroller with 8K Bytes In-System Programmable Flash
ATTINY25B ATMEL-ATTINY25B Datasheet
254Kb / 7P
   8-bit Microcontroller with 8K Bytes In-System Programmable Flash
AT90PWM3 ATMEL-AT90PWM3 Datasheet
3Mb / 365P
   8-bit Microcontroller with 8K Bytes In-System Programmable Flash
AT90PWM1 ATMEL-AT90PWM1 Datasheet
399Kb / 20P
   8-bit Microcontroller with 8K Bytes In-System Programmable Flash
AT89S52 ATMEL-AT89S52_05 Datasheet
478Kb / 39P
   8-bit Microcontroller with 8K Bytes In-System Programmable Flash
AT90S8515 ATMEL-AT90S8515_01 Datasheet
2Mb / 112P
   8-bit Microcontroller with 8K Bytes In-System Programmable Flash
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100  ...More


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
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