ATMEGA8A-MUR Atmel, ATMEGA8A-MUR Datasheet - Page 246

• Manufacturer Part Number: ATMEGA8A-MUR
• Description: MCU AVR 8KB FLASH 16MHZ 32QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA8A-MUR

• 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: 23
• Program Memory Size: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

25.3
25.4
25.4.1
25.4.2
8159D–AVR–02/11
Speed Grades
Clock Characteristics
External Clock Drive Waveforms
External Clock Drive
Figure 25-1. Maximum Frequency vs. Vcc
Figure 25-2. External Clock Drive Waveforms
Table 25-1.
Symbol
1/t
t
t
t
t
t
Δ
CLCL
CHCX
CLCX
CLCH
CHCL
t
CLCL
CLCL
Parameter
Oscillator Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
Change in period from one
clock cycle to the next
16 MHz
External Clock Drive
8 MHz
V
IL1
V
IH1
2.7V
Safe Operating Area
V
Min
CC
125
50
50
0
= 2.7V to
4.5V
Max
1.6
1.6
5.5
8
2
V
V
62.5
CC
Min
25
25
0
= 4.5V to
5.5V
ATmega8A
Max
0.5
0.5
5.5
16
2
V
Units
MHz
ns
ns
ns
μs
μs
%
246