ATMEGA8515L-8MU Atmel, ATMEGA8515L-8MU Datasheet - Page 23
ATMEGA8515L-8MU
Manufacturer Part Number
ATMEGA8515L-8MU
Description
IC AVR MCU 8K 8MHZ 3V 44-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA8515L-8MU
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
44-VQFN Exposed Pad
Processor Series
ATMEGA8x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
SPI, USART
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
35
Number Of Timers
2
Operating Supply Voltage
2.7 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Minimum Operating Temperature
- 40 C
For Use With
ATAVRISP2 - PROGRAMMER AVR IN SYSTEMATSTK500 - PROGRAMMER AVR STARTER KIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA8515L-8MU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
- Current page: 23 of 257
- Download datasheet (2Mb)
EEPROM Write During Power-
down Sleep Mode
2512K–AVR–01/10
The next code examples show assembly and C functions for reading the EEPROM. The
examples assume that interrupts are controlled so that no interrupts will occur during
execution of these functions.
When entering Power-down Sleep mode while an EEPROM write operation is active,
the EEPROM write operation will continue, and will complete before the Write Access
time has passed. However, when the write operation is completed, the crystal Oscillator
continues running, and as a consequence, the device does not enter Power-down
entirely. It is therefore recommended to verify that the EEPROM write operation is com-
pleted before entering Power-down.
Assembly Code Example
C Code Example
EEPROM_read:
unsigned char EEPROM_read(unsigned int uiAddress)
{
}
; Wait for completion of previous write
sbic EECR,EEWE
rjmp EEPROM_read
; Set up address (r18:r17) in address register
out EEARH, r18
out EEARL, r17
; Start eeprom read by writing EERE
sbi EECR,EERE
; Read data from data register
in
ret
/* Wait for completion of previous write */
while(EECR & (1<<EEWE))
/* Set up address register */
EEAR = uiAddress;
/* Start eeprom read by writing EERE */
EECR |= (1<<EERE);
/* Return data from data register */
return EEDR;
;
r16,EEDR
ATmega8515(L)
23
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