ATMEGA324P-A15MZ Atmel, ATMEGA324P-A15MZ Datasheet - Page 206

• Manufacturer Part Number: ATMEGA324P-A15MZ
• Description: MCU AVR 32KB FLASH 15MHZ 44-VQFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA324P-A15MZ

• Package / Case: 44-VQFN Exposed Pad
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Speed: 16MHz
• Number Of I /o: 32
• Eeprom Size: 1K x 8
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Program Memory Size: 32KB (32K x 8)
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Connectivity: I²C, SPI, UART/USART
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Differential Gain
Channels
206
ATmega32(L)
Figure 103. ADC Timing Diagram, Auto Triggered Conversion
Figure 104. ADC Timing Diagram, Free Running Conversion
Table 81. ADC Conversion Time
When using differential gain channels, certain aspects of the conversion need to be taken into
consideration.
Differential conversions are synchronized to the internal clock CK
clock. This synchronization is done automatically by the ADC interface in such a way that the
sample-and-hold occurs at a specific phase of CK
Condition
First conversion
Normal conversions, single ended
Auto Triggered conversions
Normal conversions, differential
Cycle Number
ADC Clock
Trigger
Source
ADATE
ADIF
ADCH
ADCL
Prescaler
Reset
Cycle Number
ADC Clock
ADSC
ADIF
ADCH
ADCL
MUX and REFS
Update
1
2
Conversion
Complete
3
One Conversion
Sample & Hold
11
4
Sample & Hold (Cycles
12
5
from Start of
Conversion)
6
1.5/2.5
13
13.5
1.5
2
7
One Conversion
Next Conversion
1
ADC2
MSB of Result
LSB of Result
8
. A conversion initiated by the user (i.e., all
2
MUX and REFS
Update
9
Conversion
10
3
Complete
Conversion Time (Cycles)
11
Sample & Hold
4
12
ADC2
13/14
13
13.5
25
13
equal to half the ADC
MSB of Result
LSB of Result
Next Conversion
2503N–AVR–06/08
1
Prescaler
Reset
2