ATMEGA8A-MUR Atmel, ATMEGA8A-MUR Datasheet - Page 163

• 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

Table 19-11. Examples of UBRR Settings for Commonly Used Oscillator Frequencies (Continued)
1.
8159D–AVR–02/11
Baud
Rate
(bps)
2400
4800
9600
14.4k
19.2k
28.8k
38.4k
57.6k
76.8k
115.2k
230.4k
250k
0.5M
1M
Max
(1)
UBRR = 0, Error = 0.0%
0.5 Mbps
UBRR
207
103
51
34
25
16
12
8
6
3
1
1
0
–
U2X = 0
f
osc
-0.8%
-3.5%
-7.0%
Error
0.2%
0.2%
0.2%
0.2%
2.1%
0.2%
8.5%
8.5%
0.0%
0.0%
–
= 8.0000MHz
1 Mbps
UBRR
416
207
103
68
51
34
25
16
12
8
3
3
1
0
U2X = 1
-0.1%
-0.8%
-3.5%
Error
0.2%
0.2%
0.6%
0.2%
0.2%
2.1%
0.2%
8.5%
0.0%
0.0%
0.0%
691.2 kbps
UBRR
287
143
71
47
35
23
17
11
8
5
2
2
–
–
U2X = 0
f
osc
-7.8%
Error
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
=
–
–
11.0592
1.3824 Mbps
UBRR
575
287
143
95
71
47
35
23
17
11
5
5
2
–
MHz
U2X = 1
-7.8%
-7.8%
Error
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
–
921.6 kbps
UBRR
383
191
95
63
47
31
23
15
11
7
3
3
1
0
U2X = 0
f
osc
-7.8%
-7.8%
-7.8%
Error
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
= 14.7456MHz
ATmega8A
1.8432 Mbps
UBRR
191
767
383
127
95
63
47
31
23
15
7
6
3
1
U2X = 1
-7.8%
-7.8%
Error
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
5.3%
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