ATMEGA32L-8AJ Atmel, ATMEGA32L-8AJ Datasheet - Page 21
ATMEGA32L-8AJ
Manufacturer Part Number
ATMEGA32L-8AJ
Description
IC MCU AVR 32K 5V 8MHZ 44-TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA32L-8AJ
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Part Number
Manufacturer
Quantity
Price
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2503Q–AVR–02/11
also assume that no Flash Boot Loader is present in the software. If such code is present, the
EEPROM write function must also wait for any ongoing SPM command to finish.
Assembly Code Example
C Code Example
EEPROM_write:
void EEPROM_write(unsigned int uiAddress, unsigned char ucData)
{
}
; Wait for completion of previous write
sbic EECR,EEWE
rjmp EEPROM_write
; Set up address (r18:r17) in address register
out
out
; Write data (r16) to data register
out
; Write logical one to EEMWE
sbi
; Start eeprom write by setting EEWE
sbi
ret
/* Wait for completion of previous write */
while(EECR & (1<<EEWE))
/* Set up address and data registers */
EEAR = uiAddress;
EEDR = ucData;
/* Write logical one to EEMWE */
EECR |= (1<<EEMWE);
/* Start eeprom write by setting EEWE */
EECR |= (1<<EEWE);
;
EEARH, r18
EEARL, r17
EEDR,r16
EECR,EEMWE
EECR,EEWE
ATmega32(L)
21
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