AT90PWM2B Atmel Corporation, AT90PWM2B Datasheet - Page 227

• 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

20.2
20.2.1
4317J–AVR–08/10
Analog Comparator Register Description
Analog Comparator 0 Control Register – AC0CON
Figure 20-1. Analog Comparator Block Diagram
Notes:
Each analog comparator has its own control register.
A dedicated register has been designed to consign the outputs and the flags of the 3 analog
comparators.
Bit
Read/Write
Initial Value
• Bit 7– AC0EN: Analog Comparator 0 Enable Bit
Set this bit to enable the analog comparator 0.
Clear this bit to disable the analog comparator 0.
• Bit 6– AC0IE: Analog Comparator 0 Interrupt Enable bit
Set this bit to enable the analog comparator 0 interrupt.
Clear this bit to disable the analog comparator 0 interrupt.
• Bit 5, 4– AC0IS1, AC0IS0: Analog Comparator 0 Interrupt Select bit
1. ADC multiplexer output: see
2. Refer to
3. The voltage on Vref is defined in
ACMPM
ACMP0
ACMP1
ACMP2
Aref
AVcc
Internal 2.56V
Reference
AC0EN
R/W
Vref
REFS0
7
0
Figure 3-1 on page 3
DACEN
DAC
REFS1
AC0IE
R/W
6
0
Result
DAC
/1.60
/2.13
/3.20
/6.40
AC0IS1
R/W
5
0
Table 21-4 on page
and for Analog Comparator pin placement.
21-3 “ADC Voltage Reference Selection” on page 246
AC0M
2 1 0
AC1M
2 1 0
AC2M
2 1 0
AC0IS0
R/W
4
0
CLK
+
-
+
-
+
-
CLK
AC0EN
AC1EN
AC2EN
CLK
(1)(2)
I/O
I/O
I/O
(/2)
(/2)
(/2)
3
0
-
-
247.
Interrupt Sensitivity Control
Interrupt Sensitivity Control
Interrupt Sensitivity Control
AT90PWM2/3/2B/3B
AC0IS1
AC1IS1
AC2IS1
AC0M2
R/W
2
0
AC0IS0
AC1IS0
AC2IS0
AC0M1
R/W
1
0
AC0IE
AC1IE
AC1ICE
AC0IE
AC0IF
Analog Comparator 0 Interrupt
AC1IF
Analog Comparator 1 Interrupt
T1 Capture Trigger
AC2IF
Analog Comparator 2 Interrupt
AC0O
AC1O
AC2O
AC0M0
R/W
0
0
AC0CON
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