ATMEGA323-8AC Atmel, ATMEGA323-8AC Datasheet - Page 100
![IC AVR MCU 32K 8MHZ COM 44TQFP](/photos/6/70/67042/313-44-tqfp_sml.jpg)
ATMEGA323-8AC
Manufacturer Part Number
ATMEGA323-8AC
Description
IC AVR MCU 32K 8MHZ COM 44TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA323L-4PC.pdf
(247 pages)
Specifications of ATMEGA323-8AC
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
32
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
ATMEGA3238AC
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ATmega323(L)
Table 36. Examples of UBRR Settings for Commonly Used Oscillator Frequencies –
UBRR = 0, Error = 0.0%
14.4K
19.2K
28.8K
38.4K
57.6K
76.8K
115.2K
230.4K
250K
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
0.5M
1M
Max
Baud
Rate
(bps)
2400
4800
9600
14.4K
UBRR
UBRR
103
207
103
51
25
16
12
51
34
8
6
3
2
1
1
0
–
–
8
6
3
2
1
0
0
–
–
125 Kbps
250 Kbps
U2X = 0
U2X = 0
f
f
-18.6%
osc
osc
-3.5%
-7.0%
-3.5%
-7.0%
-0.8%
Error
Error
8.5%
8.5%
8.5%
8.5%
0.2%
0.2%
0.2%
2.1%
0.2%
8.5%
8.5%
8.5%
8.5%
0.0%
0.2%
0.2%
0.2%
(Continued)
–
–
–
–
= 4.0000 MHz
= 8.0000 MHz
UBRR
UBRR
207
103
416
207
103
16
12
51
34
25
16
12
68
8
6
3
2
1
–
0
8
6
3
1
1
0
–
250 Kbps
0.5 Mbps
U2X = 1
U2X = 1
-3.5%
-7.0%
-0.8%
-3.5%
-7.0%
-0.1%
Error
Error
2.1%
0.2%
8.5%
8.5%
8.5%
0.0%
0.2%
0.2%
0.2%
0.2%
2.1%
0.2%
8.5%
8.5%
0.0%
0.0%
0.2%
0.2%
0.6%
–
–
UBRR
191
15
11
95
47
31
23
15
11
7
5
3
2
1
0
0
–
7
5
3
1
1
0
–
230.4 Kbps
460.8 Kpbs
U2X = 0
f
-7.8%
osc
-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%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
–
–
= 7.3728 MHz
UBRR
383
191
31
23
15
11
95
63
47
31
23
15
11
7
5
3
1
1
0
460.8 Kbps
7
3
3
1
0
921.6 Kbps
1457G–AVR–09/03
U2X = 1
-7.8%
-7.8%
-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%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
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