ATMEGA162L-8PI Atmel, ATMEGA162L-8PI Datasheet - Page 88

• Manufacturer Part Number: ATMEGA162L-8PI
• Description: IC MCU AVR 16K 3V 8MHZ 40-DIP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA162L-8PI

• 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: 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: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -

Definitions
Timer/Counter Clock
Sources
88
ATmega162(V/U/L)
inactive when no clock source is selected. The output from the clock select logic is
referred to as the timer clock (clk
The double buffered Output Compare Register (OCR0) is compared with the
Timer/Counter value at all times. The result of the compare can be used by the Wave-
form Generator to generate a PWM or variable frequency output on the Output Compare
pin (OC0). See “Output Compare Unit” on page 89. for details. The compare match
event will also set the Compare Flag (OCF0) which can be used to generate an output
compare interrupt request.
Many register and bit references in this section are written in general form. A lower case
“n” replaces the Timer/Counter number, in this case 0. However, when using the register
or bit defines in a program, the precise form must be used i.e., TCNT0 for accessing
Timer/Counter0 counter value and so on.
The definitions in Table 46 are also used extensively throughout the document.
Table 46. Definitions
The Timer/Counter can be clocked by an internal or an external clock source. The clock
source is selected by the Clock Select logic which is controlled by the Clock Select
(CS02:0) bits located in the Timer/Counter Control Register (TCCR0). For details on
c lo ck s o ur ce s an d pr es c al er , se e “ Ti me r /Cou nte r0, Tim er /Co unt er 1, an d
Timer/Counter3 Prescalers” on page 102.
BOTTOM
MAX
TOP
The counter reaches the BOTTOM when it becomes 0x00.
The counter reaches its MAXimum when it becomes 0xFF (decimal 255).
The counter reaches the TOP when it becomes equal to the highest
value in the count sequence. The TOP value can be assigned to be the
fixed value 0xFF (MAX) or the value stored in the OCR0 Register. The
assignment is dependent on the mode of operation.
T
0).
2513C–AVR–09/02