ATMEGA324P-15MT1 Atmel, ATMEGA324P-15MT1 Datasheet - Page 111
![MCU AVR 32K FLASH 15MHZ 44-QFN](/photos/12/13/121316/313-44-qfn_sml.jpg)
ATMEGA324P-15MT1
Manufacturer Part Number
ATMEGA324P-15MT1
Description
MCU AVR 32K FLASH 15MHZ 44-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA324P-15MT1
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
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 ~ 105°C
Package / Case
44-VQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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14.2.1
7674F–AVR–09/09
Registers
Figure 14-1. 16-bit Timer/Counter Block Diagram
Note:
The Timer/Counter (TCNTn), Output Compare Registers (OCRnA/B/C), and Input Capture Reg-
ister (ICRn) are all 16-bit registers. Special procedures must be followed when accessing the
16-bit registers. These procedures are described in the section
page
CPU access restrictions. Interrupt requests (abbreviated to Int.Req. in the figure) signals are all
visible in the Timer Interrupt Flag Register (TIFRn). All interrupts are individually masked with
the Timer Interrupt Mask Register (TIMSKn). TIFRn and TIMSKn are not shown in the figure.
The Timer/Counter can be clocked internally, via the prescaler, or by an external clock source on
the Tn 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/C) are compared with the
Timer/Counter value at all time. The result of the compare can be used by the Waveform Gener-
ator to generate a PWM or variable frequency output on the Output Compare pin (OCnA/B/C).
112. The Timer/Counter Control Registers (TCCRnA/B/C) are 8-bit registers and have no
Refer to
placement and description.
Figure 1-1 on page 2
Timer/Counter
TCCRnA
OCRnA
OCRnB
TCNTn
ICRn
=
=
Direction
Count
Clear
and
“Alternate Port Functions” on page 77
Control Logic
TOP
=
TCCRnB
Values
BOTTOM
Fixed
TOP
ATmega164P/324P/644P
ICFn (Int.Req.)
(Note:)
Detector
clk
Edge
=
Tn
0
“Accessing 16-bit Registers” on
OCnA
(Int.Req.)
OCnB
(Int.Req.)
TOVn
(Int.Req.)
Clock Select
Generation
Generation
( From Prescaler )
Waveform
Waveform
Canceler
Detector
Noise
Edge
for Timer/Counter1 pin
Comparator Ouput )
( From Analog
T
OCnA
OCnB
ICPn
n
Tn
).
111
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