ATMEGA162V-1MC Atmel, ATMEGA162V-1MC Datasheet - Page 105

• Manufacturer Part Number: ATMEGA162V-1MC
• Description: IC MCU AVR 16K 1.8V 8MHZ 44-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA162V-1MC

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 1MHz
• 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): 1.8 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-VQFN Exposed Pad
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -

Registers
2513C–AVR–09/02
Figure 46. 16-bit Timer/Counter Block Diagram
Note:
The Timer/Counter (TCNTn), Output Compare Registers (OCRnA/B), and Input Capture
Register (ICRn) are all 16-bit registers. Special procedures must be followed when
accessing the 16-bit registers. These procedures are described in the section “Access-
ing 16-bit Registers” on page 107. The Timer/Counter Control Registers (TCCRnA/B)
are 8-bit registers and have no CPU access restrictions. Interrupt requests (abbreviated
to Int.Req. in the figure) signals are all visible in the Timer Interrupt Flag Register (TIFR)
and Extended Timer Interrupt Flag Register (ETIFR). All interrupts are individually
masked with the Timer Interrupt Mask Register (TIMSK) and Extended Timer Interrupt
Mask Register (ETIMSK). (E)TIFR and (E)TIMSK are not shown in the figure since
these registers are shared by other Timer units.
The Timer/Counter can be clocked internally, via the prescaler, or by an external clock
source on the T1 pin. The Clock Select logic block controls which clock source and edge
the Timer/Counter uses to increment (or decrement) its value. The Timer/Counter is
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 Registers (OCRnA/B) are compared with the
Timer/Counter value at all time. The result of the compare can be used by the waveform
generator to generate a PWM or variable frequency output on the Output Compare pin
1. Refer to Figure 1 on page 2, Table 32 on page 70, and Table 38 on page 76 for
Timer/Counter1 pin placement and description.
Timer/Counter
TCCRnA
OCRnA
OCRnB
TCNTn
ICRn
=
=
Direction
Count
Clear
T
n
Control Logic
).
TOP
=
TCCRnB
Values
BOTTOM
Fixed
TOP
ICFn (Int.Req.)
clk
Detector
(1)
Edge
=
Tn
0
ATmega162(V/U/L)
OCnA
(Int.Req.)
OCnB
(Int.Req.)
TOVn
(Int.Req.)
Clock Select
Generation
Generation
( From Prescaler )
Waveform
Waveform
Canceler
Detector
Noise
Edge
Comparator Ouput )
( From Analog
OCnB
OCnA
ICPn
Tn
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