ATMEGA64L-8AI Atmel, ATMEGA64L-8AI Datasheet - Page 116
ATMEGA64L-8AI
Manufacturer Part Number
ATMEGA64L-8AI
Description
IC AVR MCU 64K LV 8MHZ IND64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA64L-8AI
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
53
Program Memory Size
64KB (32K x 16)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
4K 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
64-TQFP, 64-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA64L-8AI
Manufacturer:
AT
Quantity:
20 000
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2490Q–AVR–06/10
The following code examples show how to do an atomic read of the TCNTn Register contents.
Reading any of the OCRnA/B/C or ICRn Registers can be done by using the same principle.
Note:
Assembly Code Example
C Code Example
TIM16_ReadTCNTn:
unsigned int TIM16_ReadTCNTn( void )
{
}
; Save global interrupt flag
in
; Disable interrupts
cli
; Read TCNTn into r17:r16
in
in
; Restore global interrupt flag
out SREG,r18
ret
unsigned char sreg;
unsigned int i;
/* Save global interrupt flag */
sreg = SREG;
/* Disable interrupts */
_CLI();
/* Read TCNTn into i */
i = TCNTn;
/* Restore global interrupt flag */
SREG = sreg;
return i;
1. See “About Code Examples” on page 9.
r18,SREG
r16,TCNTnL
r17,TCNTnH
The assembly code example returns the TCNTn value in the r17:r16 register pair.
(1)
(1)
ATmega64(L)
116
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