AT90LS2333-4AC Atmel, AT90LS2333-4AC Datasheet - Page 49

• Manufacturer Part Number: AT90LS2333-4AC
• Description: IC MCU 2K 4MHZ A/D LV 32TQFP
• Manufacturer: Atmel
• Series: AVR® 90LSr

Specifications of AT90LS2333-4AC

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 20
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 6 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 32-TQFP, 32-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

For standard crystal frequencies, the most commonly used baud rates can be generated by using the UBR settings in
Table 19. UBR values which yield an actual baud rate differing less than 2% from the target baud rate, are bold in the table.
However, using baud rates that have more than 1% error is not recommended. High error ratings give less noise
resistanse.
Table 19. UBR Settings at Various Crystal Frequencies
B a u d R a t e
B a u d R a t e
B a u d R a t e
1 1 5 2 0 0 U B R =
1 1 5 2 0 0 U B R =
1 1 5 2 0 0 U B R =
1 4 4 0 0 U B R =
1 9 2 0 0 U B R =
2 8 8 0 0 U B R =
3 8 4 0 0 U B R =
5 7 6 0 0 U B R =
7 6 8 0 0 U B R =
1 4 4 0 0 U B R =
1 9 2 0 0 U B R =
2 8 8 0 0 U B R =
3 8 4 0 0 U B R =
5 7 6 0 0 U B R =
7 6 8 0 0 U B R =
1 4 4 0 0 U B R =
1 9 2 0 0 U B R =
2 8 8 0 0 U B R =
3 8 4 0 0 U B R =
5 7 6 0 0 U B R =
7 6 8 0 0 U B R =
2 4 0 0 U B R =
4 8 0 0 U B R =
9 6 0 0 U B R =
2 4 0 0 U B R =
4 8 0 0 U B R =
9 6 0 0 U B R =
2 4 0 0 U B R =
4 8 0 0 U B R =
9 6 0 0 U B R =
3 . 2 7 6 8 M H z
7 . 3 7 2 8 M H z
1 M H z
1 9 1
2 5
1 2
8 4
4 2
2 0
1 3
1 0
9 5
4 7
3 1
2 3
1 5
1 1
6
3
2
1
1
0
0
0
6
4
3
2
1
7
5
3
% E rro r
% E rro r
% E rro r
2 2 . 9 U B R =
2 2 . 9 U B R =
8 4 . 3 U B R =
1 2 . 5 U B R =
1 2 . 5 U B R =
1 2 . 5 U B R =
0 . 2 U B R =
0 . 2 U B R =
7 . 5 U B R =
7 . 8 U B R =
7 . 8 U B R =
7 . 8 U B R =
7 . 8 U B R =
0 . 4 U B R =
0 . 8 U B R =
1 . 6 U B R =
1 . 6 U B R =
3 . 1 U B R =
1 . 6 U B R =
6 . 3 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
AT90S/LS2333 and AT90S/LS4433
1 . 8 4 3 2 M H z
3 . 6 8 6 4 M H z
8 M H z
2 0 7
1 0 3
4 7
2 3
1 1
9 5
4 7
2 3
1 5
1 1
5 1
3 4
2 5
1 6
1 2
7
5
3
2
1
1
0
7
5
3
2
1
8
6
3
% E rr o r
% E rr o r
% E rr o r
3 3 . 3 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 0 U B R =
0 . 2 U B R =
0 . 2 U B R =
0 . 2 U B R =
0 . 8 U B R =
0 . 2 U B R =
2 . 1 U B R =
0 . 2 U B R =
3 . 7 U B R =
7 . 5 U B R =
7 . 8 U B R =
9 . 2 1 6 M H z
2 M H z
4 M H z
1 0 3
2 3 9
1 1 9
5 1
2 5
1 2
5 1
2 5
1 6
1 2
5 9
3 9
2 9
1 9
1 4
8
6
3
2
1
1
0
8
6
3
2
1
9
7
4
% E rro r
% E rro r
% E rro r
2 2 . 9
0 . 2
0 . 2
0 . 2
3 . 7
7 . 5
7 . 8
7 . 8
7 . 8
7 . 8
0 . 2
0 . 2
0 . 2
2 . 1
0 . 2
3 . 7
7 . 5
7 . 8
7 . 8
7 . 8
0 . 0
0 . 0
0 . 0
0 . 0
0 . 0
0 . 0
0 . 0
0 . 0
6 . 7
0 . 0
49