ATMEGA644P-A15MZ Atmel, ATMEGA644P-A15MZ Datasheet - Page 350

• Manufacturer Part Number: ATMEGA644P-A15MZ
• Description: MCU AVR 64KB FLASH 16MHZ 44QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA644P-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: 2K x 8
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Program Memory Size: 64KB (64K 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

27.7
350
Internal Oscillator Speed
ATmega164P/324P/644P
Figure 27-23. Bandgap Voltage vs. Temperature
Figure 27-24. Watchdog Oscillator Frequency vs. Temperature
130
125
120
115
110
105
1.18
1.16
1.14
1.12
1.08
1.06
1.04
1.02
1.2
1.1
1
-40
-40
-30
-30
-20
-20
WATCHDOG OSCILLATOR FREQUENCY vs. TEMPERATURE
-10
-10
0
0
BANDGAP VOLTAGE vs. TEMPERATURE
10
10
20
20
30
30
Temperature (V)
Temperature
40
40
50
50
60
60
70
70
80
80
90
90
100
100
110
110
120
120
7674F–AVR–09/09
6
5.5
5
4.5
3.3
3
2.7
5
3