ATMEGA8515L-8MUR Atmel, ATMEGA8515L-8MUR Datasheet - Page 154
![no-image](/images/manufacturer_photos/0/0/78/atmel_sml.jpg)
ATMEGA8515L-8MUR
Manufacturer Part Number
ATMEGA8515L-8MUR
Description
MCU AVR 8KB FLASH 8MHZ 44QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA8515L-8MC.pdf
(257 pages)
Specifications of ATMEGA8515L-8MUR
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
EBI/EMI, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
35
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
- Current page: 154 of 257
- Download datasheet (2Mb)
Read Access
154
ATmega8515(L)
Doing a read access to the UBRRH or the UCSRC Register is a more complex opera-
tion. However, in most applications, it is rarely necessary to read any of these registers.
The read access is controlled by a timed sequence. Reading the I/O location once
returns the UBRRH Register contents. If the register location was read in previous sys-
tem clock cycle, reading the register in the current clock cycle will return the UCSRC
contents. Note that the timed sequence for reading the UCSRC is an atomic operation.
Interrupts must therefore be controlled (e.g., by disabling interrupts globally) during the
read operation.
The following code example shows how to read the UCSRC Register contents.
Note:
The assembly code example returns the UCSRC value in r16.
Reading the UBRRH contents is not an atomic operation and therefore it can be read as
an ordinary register, as long as the previous instruction did not access the register
location.
Assembly Code Example
C Code Example
USART_ReadUCSRC:
unsigned char USART_ReadUCSRC( void )
{
}
; Read UCSRC
in r16,UBRRH
in r16,UCSRC
ret
unsigned char ucsrc;
/* Read UCSRC */
ucsrc = UBRRH;
ucsrc = UCSRC;
return ucsrc;
1. See “About Code Examples” on page 7.
(1)
(1)
2512K–AVR–01/10
Related parts for ATMEGA8515L-8MUR
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![ATmega8515](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet:
![ATMEGA8515-16MU](/photos/12/13/121316/313-44-qfn_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ 5V 44-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA8515-16AU](/photos/6/70/67042/313-44-tqfp_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ 5V 44TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8515-16PU](/photos/6/70/67049/453-40-dip_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ 5V 40DIP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8515-16AC](/photos/6/70/67042/313-44-tqfp_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ COM 44-TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8515-16PI](/photos/6/70/67049/453-40-dip_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ IND 40-DIP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8515-16JI](/photos/6/70/67043/453-44-plcc_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ IND 44-PLCC
Manufacturer:
Atmel
Datasheet:
![ATMEGA8515-16AI](/photos/6/70/67042/313-44-tqfp_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ IND 44-TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8515-16AUR](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
MCU AVR 8KB FLASH 16MHZ 44TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8515-16MUR](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
MCU AVR 8KB FLASH 16MHZ 44QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA8515-16JUR](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
MCU AVR 8KB FLASH 16MHZ 44PLCC
Manufacturer:
Atmel
Datasheet:
![ATMEGA8515-16JU](/photos/6/70/67043/453-44-plcc_tmb.jpg)
Part Number:
Description:
IC MCU AVR 8K 16MHZ IND 44-PLCC
Manufacturer:
Atmel
Datasheet:
![ATMEGA8515-16PC](/photos/6/70/67049/453-40-dip_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ COM 40-DIP
Manufacturer:
Atmel
Datasheet: