AT90PWM2B Atmel Corporation, AT90PWM2B Datasheet - Page 209

• Manufacturer Part Number: AT90PWM2B
• Manufacturer: Atmel Corporation

Specifications of AT90PWM2B

• Flash (kbytes): 8 Kbytes
• Pin Count: 24
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 8
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 19
• Ext Interrupts: 4
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 125
• Analog Comparators: 2
• Resistive Touch Screen: No
• Dac Channels: 1
• Dac Resolution (bits): 10
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 0.5
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 105
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 4
• Output Compare Channels: 12
• Input Capture Channels: 1
• Pwm Channels: 7
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

Table 18-11. Examples of UBRR Settings for Commonly Frequencies (Continued)
1.
4317J–AVR–08/10
Baud
Rate
(bps)
2400
4800
9600
14.4k
19.2k
28.8k
38.4k
57.6k
76.8k
115.2k
230.4k
250k
500k
1M
Max.
(1)
UBRR = 0, Error = 0.0%
UBRR
207
103
51
34
25
16
12
8
6
3
1
1
0
–
0.5 Mbps
U2X = 0
f
clk
Error
-0.8%
-3.5%
-7.0%
0.2%
0.2%
0.2%
0.2%
2.1%
0.2%
8.5%
8.5%
0.0%
0.0%
io
–
= 8.0000 MHz
UBRR
416
207
103
68
51
34
25
16
12
8
3
3
1
0
U2X = 1
1 Mbps
Error
-0.1%
-0.8%
-3.5%
0.2%
0.2%
0.6%
0.2%
0.2%
2.1%
0.2%
8.5%
0.0%
0.0%
0.0%
UBRR
259
129
64
42
32
21
15
10
7
4
2
2
–
–
625 kbps
U2X = 0
f
clk
Error
-16.8%
-33.3%
-1.4%
-1.4%
-1.5%
0.2%
0.2%
0.2%
0.9%
1.8%
1.9%
9.6%
io
–
–
=
10.000
UBRR
520
259
129
86
64
42
32
21
15
10
4
4
2
–
1.25 Mbps
MHz
U2X = 1
Error
-33.3%
-1.4%
-1.4%
-1.5%
0.0%
0.2%
0.2%
0.2%
0.2%
0.9%
1.8%
9.6%
0.0%
–
AT90PWM2/3/2B/3B
UBRR
287
143
71
47
35
23
17
11
8
5
2
2
–
–
691.2 kbps
U2X = 0
f
clk
Error
-7.8%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
io
–
–
=
11.0592
UBRR
575
287
143
1.3824 Mbps
95
71
47
35
23
17
11
5
5
2
–
MHz
U2X = 1
Error
-7.8%
-7.8%
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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