ATMEGA8L-8AUR Atmel, ATMEGA8L-8AUR Datasheet - Page 156

• Manufacturer Part Number: ATMEGA8L-8AUR
• Description: MCU AVR 8KB FLASH 8MHZ 32TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA8L-8AUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• 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: *
• Package: 32TQFP
• Device Core: AVR
• Family Name: ATmega
• Maximum Speed: 8 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 23
• Interface Type: SPI/TWI/USART
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 63. Examples of UBRR Settings for Commonly Used Oscillator Frequencies (Continued)
1.
156
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%
ATmega8(L)
UBRR
416
207
103
68
51
34
25
16
12
8
3
3
1
0
U2X = 0
1Mbps
f
osc
-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%
= 16.0000MHz
UBRR
832
416
207
138
103
68
51
34
25
16
8
7
3
1
U2X = 1
2Mbps
-0.1%
-0.1%
-0.8%
-3.5%
Error
0.0%
0.2%
0.2%
0.6%
0.2%
0.2%
2.1%
0.0%
0.0%
0.0%
UBRR
479
239
119
79
59
39
29
19
14
9
4
4
–
–
1.152Mbps
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%
–
–
= 18.4320MHz
UBRR
959
479
239
159
119
79
59
39
29
19
9
8
4
–
2.304Mbps
U2X = 1
-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%
2.4%
–
UBRR
520
259
129
86
64
42
32
21
15
10
4
4
–
–
1.25Mbps
U2X = 0
f
osc
-0.2%
-1.4%
-1.4%
-1.4%
Error
0.0%
0.2%
0.2%
0.2%
0.9%
1.7%
8.5%
0.0%
–
–
= 20.0000MHz
UBRR
1041
520
259
173
129
86
64
42
32
21
10
9
4
–
2486Z–AVR–02/11
2.5Mbps
U2X = 1
-0.2%
-0.2%
-1.4%
-1.4%
-1.4%
Error
0.0%
0.2%
0.2%
0.9%
0.0%
0.2%
0.0%
0.0%
–