ATmega64A Atmel Corporation, ATmega64A Datasheet - Page 329

• Manufacturer Part Number: ATmega64A
• Manufacturer: Atmel Corporation

Specifications of ATmega64A

• Flash (kbytes): 64 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 53
• Ext Interrupts: 8
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 4
• Eeprom (bytes): 2048
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 4
• Output Compare Channels: 8
• Input Capture Channels: 2
• Pwm Channels: 7
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

28.3
28.4
28.4.1
28.4.2
8160C–AVR–07/09
Speed Grades
Clock Characteristics
External Clock Drive Waveforms
External Clock Drive
Figure 28-1. Maximum Frequency vs. Vcc
Figure 28-2. External Clock Drive Waveforms
Table 28-1.
Symbol
1/t
t
t
t
t
t
Δ
CLCL
CHCX
CLCX
CLCH
CHCL
t
CLCL
CLCL
16 MHz
Parameter
Oscillator Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
Change in period from
one clock cycle to the
next
V
External Clock Drive
8 MHz
IL1
V
IH1
2.7V
(1)
V
Safe Operating Area
Min
125
CC
50
50
0
= 2.7V to
Max
5.5
1.6
1.6
8
2
4.5V
V
V
62.5
Min
CC
25
25
0
= 4.5V to
5.5V
ATmega64A
Max
5.5
0.5
0.5
16
2
V
Units
MHz
ns
ns
ns
μs
μs
%
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