ATMEGA128A-AU Atmel, ATMEGA128A-AU Datasheet - Page 199

• Manufacturer Part Number: ATMEGA128A-AU
• Description: MCU 8BIT 128K ISP FLASH 64-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA128A-AU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 128KB (64K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 4K 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: 64-TQFP, 64-VQFP
• Processor Series: ATMEGA128x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 4 KB
• Interface Type: JTAG
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 53
• Number Of Timers: 4
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• On-chip Dac: 10 bit, 8 Channel
• Cpu Family: ATmega
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 16MHz
• Total Internal Ram Size: 4KB
• # I/os (max): 53
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 64
• Package Type: TQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q4784435

Table 20-10. Examples of UBRR Settings for Commonly Used Oscillator Frequencies
1.
Table 20-11. Examples of UBRR Settings for Commonly Used Oscillator Frequencies
8151H–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
Baud
Rate
(bps)
2400
4800
9600
14.4k
19.2k
28.8k
38.4k
57.6k
76.8k
115.2k
230.4k
250k
(1)
UBRR = 0, Error = 0.0%
UBRR
UBRR
207
103
95
47
23
15
11
51
34
25
16
12
7
5
3
2
1
0
0
–
–
8
6
3
1
1
230.4Kbps
U2X = 0
U2X = 0
f
f
osc
-7.8%
osc
-0.8%
-3.5%
-7.0%
Error
Error
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.2%
0.2%
0.2%
0.2%
2.1%
0.2%
8.5%
8.5%
0.0%
–
–
= 3.6864MHz
= 8.0000MHz
UBRR
UBRR
191
416
207
103
95
47
31
23
15
11
68
51
34
25
16
12
7
5
3
1
1
0
–
8
3
3
460.8Kbps
U2X = 1
U2X = 1
-7.8%
-7.8%
-0.1%
-0.8%
-3.5%
Error
Error
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.2%
0.2%
0.6%
0.2%
0.2%
2.1%
0.2%
8.5%
0.0%
–
UBRR
UBRR
103
287
143
51
25
16
12
71
47
35
23
17
11
8
6
3
2
1
0
–
–
8
5
2
2
0
250Kbps
U2X = 0
U2X = 0
f
osc
f
-3.5%
-7.0%
-7.8%
osc
Error
Error
0.2%
0.2%
0.2%
2.1%
0.2%
8.5%
8.5%
8.5%
8.5%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
–
–
=
= 4.0000MHz
11.0592
UBRR
UBRR
207
103
575
287
143
51
34
25
16
12
95
71
47
35
23
17
11
8
6
3
1
1
0
–
5
5
MHz
0.5Mbps
U2X = 1
U2X = 1
-0.8%
-3.5%
-7.0%
-7.8%
Error
Error
0.2%
0.2%
0.2%
0.2%
2.1%
0.2%
8.5%
8.5%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
–
UBRR
UBRR
191
383
191
95
47
31
23
15
11
95
63
47
31
23
15
11
7
5
3
1
1
0
–
7
3
3
460.8Kbps
U2X = 0
U2X = 0
f
f
osc
-7.8%
-7.8%
-7.8%
osc
Error
Error
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
ATmega128A
–
= 14.7456MHz
= 7.3728MHz
UBRR
UBRR
191
383
191
127
383
767
95
63
47
31
23
15
11
95
63
47
31
23
15
7
3
3
1
0
7
6
921.6Kbps
U2X = 1
U2X = 1
-7.8%
-7.8%
-7.8%
Error
Error
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
5.3%
199