ATMEGA162-16MJ Atmel, ATMEGA162-16MJ Datasheet - Page 110
![IC MCU AVR 16K 5V 16MHZ 44-QFN](/photos/12/13/121316/313-44-qfn_sml.jpg)
ATMEGA162-16MJ
Manufacturer Part Number
ATMEGA162-16MJ
Description
IC MCU AVR 16K 5V 16MHZ 44-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA162-16MJ
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
35
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K 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
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
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110
ATmega162/V
The following code examples show how to do an atomic read of the TCNTn Register contents.
Reading any of the OCRnA/B or ICRn Registers can be done by using the same principle.
Note:
The assembly code example returns the TCNTn value in the r17:r16 register pair.
Assembly Code Example
C Code Example
TIM16_ReadTCNTn:
unsigned int TIM16_ReadTCNTn( void )
{
}
; Save Global Inter?upt Flag
in
; Disable interrupt?
cli
; Read TCNTn into r17:r16
in
in
; Restore Global In?errupt Flag
out SREG,r18
ret
unsigned char sreg;
unsigned int i;
/* Save Global Inte?rupt Flag */
sreg = SREG;
/* Disable interrup?s */
_CLI();
/* Read TCNTn into i */
i = TCNTn;
/* Restore Global I?terrupt Flag */
SREG = sreg;
return i;
1. The example code assumes that the part specific header file is included.
For I/O Registers located in extended I/O map, “IN”, “OUT”, “SBIS”, “SBIC”, “CBI”, and “SBI”
instructions must be replaced with instructions that allow access to extended I/O. Typically
“LDS” and “STS” combined with “SBRS”, “SBRC”, “SBR”, and “CBR”.
r18,SREG
r16,TCNTnL
r17,TCNTnH
(1)
(1)
2513K–AVR–07/09
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