IC MCU 128K 6MHZ A/D IT 64TQFP

ATMEGA103-6AI

Manufacturer Part NumberATMEGA103-6AI
DescriptionIC MCU 128K 6MHZ A/D IT 64TQFP
ManufacturerAtmel
SeriesAVR® ATmega
ATMEGA103-6AI datasheets
 

Specifications of ATMEGA103-6AI

Core ProcessorAVRCore Size8-Bit
Speed6MHzConnectivitySPI, UART/USART
PeripheralsPOR, PWM, WDTNumber Of I /o32
Program Memory Size128KB (64K x 16)Program Memory TypeFLASH
Eeprom Size4K x 8Ram Size4K x 8
Voltage - Supply (vcc/vdd)4 V ~ 5.5 VData ConvertersA/D 8x10b
Oscillator TypeInternalOperating Temperature-40°C ~ 85°C
Package / Case64-TQFP, 64-VQFPFor Use WithATSTK501 - ADAPTER KIT FOR 64PIN AVR MCU
Lead Free Status / RoHS StatusContains lead / RoHS non-compliant  
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Page 74/141

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Table 24. UBRR Settings at Various CPU Frequencies
Baud Rate
1 MHz %Error
2400 UBRR=
25
4800 UBRR=
12
9600 UBRR=
14400 UBRR=
19200 UBRR=
28800 UBRR=
38400 UBRR=
57600 UBRR=
76800 UBRR=
115200 UBRR=
Baud Rate
3.2768 MHz %Error
2400 UBRR=
84
4800 UBRR=
42
9600 UBRR=
20
14400 UBRR=
13
19200 UBRR=
10
28800 UBRR=
38400 UBRR=
57600 UBRR=
76800 UBRR=
115200 UBRR=
Baud Rate
7.3728 MHz %Error
2400 UBRR=
191
4800 UBRR=
95
9600 UBRR=
47
14400 UBRR=
31
19200 UBRR=
23
28800 UBRR=
15
38400 UBRR=
11
57600 UBRR=
76800 UBRR=
115200 UBRR=
UART Baud Rate Register –
UBRR
ATmega103(L)
74
1.8432 MHz %Error
0.2 UBRR=
0.0 UBRR=
47
0.2 UBRR=
0.0 UBRR=
23
6
7.5 UBRR=
11
0.0 UBRR=
3
7.8 UBRR=
7
0.0 UBRR=
2
7.8 UBRR=
5
0.0 UBRR=
1
7.8 UBRR=
0.0 UBRR=
3
1
22.9 UBRR=
2
0.0 UBRR=
0
7.8 UBRR=
1
0.0 UBRR=
0
22.9 UBRR=
1
33.3 UBRR=
0
84.3 UBRR=
0.0 UBRR=
0
3.6864 MHz %Error
0.4 UBRR=
0.0 UBRR=
95
0.8 UBRR=
47
0.0 UBRR=
1.6 UBRR=
23
0.0 UBRR=
1.6 UBRR=
15
0.0 UBRR=
3.1 UBRR=
0.0 UBRR=
11
1.6 UBRR=
0.0 UBRR=
6
7
4
6.3 UBRR=
5
0.0 UBRR=
3
12.5 UBRR=
3
0.0 UBRR=
2
12.5 UBRR=
0.0 UBRR=
2
1
12.5 UBRR=
0.0 UBRR=
1
8 MHz %Error
0.0 UBRR=
0.2 UBRR=
207
0.0 UBRR=
103
0.2 UBRR=
0.0 UBRR=
51
0.2 UBRR=
0.0 UBRR=
0.8 UBRR=
34
0.0 UBRR=
0.2 UBRR=
25
0.0 UBRR=
16
2.1 UBRR=
0.0 UBRR=
12
0.2 UBRR=
7
0.0 UBRR=
8
3.7 UBRR=
0.0 UBRR=
6
7.5 UBRR=
5
0.0 UBRR=
3
7.8 UBRR=
3
Bit
7
6
5
$09 ($29)
MSB
Read/Write
R/W
R/W
R/W
Initial Value
0
0
0
The UBRR is an 8-bit read/write register that specifies the UART baud rate according to
the description on the previous page.
2 MHz %Error
2.4576 MHz %Error
0.2 UBRR=
51
63
0.2 UBRR=
25
31
12
0.2 UBRR=
15
8
3.7 UBRR=
10
6
7.5 UBRR=
7
3
7.8 UBRR=
4
2
7.8 UBRR=
3
1
7.8 UBRR=
2
1
22.9 UBRR=
1
0
7.8 UBRR=
0
4 MHz %Error
4.608 MHz %Error
0.2 UBRR=
103
119
51
0.2 UBRR=
59
25
0.2 UBRR=
29
16
2.1 UBRR=
19
0.2 UBRR=
12
14
8
3.7 UBRR=
9
6
7.5 UBRR=
7
3
7.8 UBRR=
4
2
7.8 UBRR=
3
1
7.8 UBRR=
2
9.216 MHz %Error
11.059 MHz %Error
0.0 UBRR=
287
239
119
0.0 UBRR=
143
59
0.0 UBRR=
71
0.0 UBRR=
39
47
0.0 UBRR=
29
35
19
0.0 UBRR=
23
14
0.0 UBRR=
17
9
0.0 UBRR=
11
7
6.7 UBRR=
8
0.0 UBRR=
4
5
4
3
2
1
R/W
R/W
R/W
R/W
0
0
0
0
0.0
0.0
0.0
3.1
0.0
6.3
0.0
12.5
0.0
25.0
0.0
0.0
0.0
0.0
0.0
0.0
6.7
0.0
6.7
20.0
-
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0
LSB
UBRR
R/W
0
0945I–AVR–02/07