AT90PWM2B Atmel Corporation, AT90PWM2B Datasheet - Page 223

• 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

19.6.4
4317J–AVR–08/10
EUSART Control Register B – EUCSRB
Table 19-2.
• Bit 7:5 –Reserved Bits
These bits are reserved for future use. For compatibilty with future devices, these bits must be
written to zero when EUSCRB is written.
• Bit 4 – EUSART Enable Bit
Set to enable the EUSART mode, clear to operate as standard USART.
• Bit 3– EUSBS Enable Bit
This bit selects the number of stop bits detected by the receiver.
Table 19-3.
Note:
• Bit 2–Reserved Bit
This bit is reserved for future use. For compatibilty with future devices, this bit must be written to
zero when EUSCRB is written.
• Bit 1 – Manchester mode
Bit
Read/Write
Initial Value
URxS3
1
1
1
1
1
1
1
The number of stop bit inserted by the Transmitter in EUSART mode is configurable throught the
USBS bit of in the of the USART.
URxS Bits Settings
EUSBS Bit Settings
EUSBS
R
7
0
-
0
1
URxS2
0
0
0
1
1
1
1
R
6
0
-
URxS1
R
5
0
-
0
1
1
0
0
1
1
Receiver Stop Bit(s)
1-bit
2-bit
EUSART
R/W
4
0
URxS0
EUSBS
1
0
1
0
1
0
1
R/W
3
0
AT90PWM2/3/2B/3B
Receive Character Size
14-bit
15-bit
16-bit
Reserved
Reserved
16 OR 17 bit (for Manchester
encoded only mode)
17-bit
R
2
0
-
EMCH
R/W
1
0
BODR
R/W
0
0
EUCSRB
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