AT90PWM161 Atmel Corporation, AT90PWM161 Datasheet - Page 200

• Manufacturer Part Number: AT90PWM161
• Manufacturer: Atmel Corporation

Specifications of AT90PWM161

• Flash (kbytes): 16 Kbytes
• Pin Count: 20
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 20
• Ext Interrupts: 3
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 11
• Adc Resolution (bits): 10
• Adc Speed (ksps): 125
• Analog Comparators: 3
• Resistive Touch Screen: No
• Dac Channels: 1
• Dac Resolution (bits): 10
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.25
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 125
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 1
• Output Compare Channels: 8
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

16.4.4
200
AT90PWM81
Analog Comparator n Extended Control Register – ACnECON
Bit
Read/Write
Initial Value
• Bit 7..6– Reserved
• Bit 5– AC1OI: Analog Comparator n Output Invert
Set this bit to invert the analog comparator n output .
Clear this bit to keep the analog comparator n output .
• Bit 4– AC1OE: Analog Comparator n Output Enable
Set this bit to enable the analog comparator n output pin.
Clear this bit to disable the analog comparator n output pin.
• Bit 3 – AC1ICE: Analog Comparator 1 Interrupt Capture Enable bit
Set this bit to enable the input capture of the Timer/Counter1 on the analog comparator event. The com-
parator output is in this case directly connected to the input capture front-end logic, making the
comparator utilize the noise canceler and edge select features of the Timer/Counter1 Input Capture inter-
rupt. To make the comparator trigger the Timer/Counter1 Input Capture interrupt, the ICIE1 bit in the
Timer Interrupt Mask Register (TIMSK1) must be set.
In case ICES1 bit
edge of AC3O is the capture/trigger event of the Timer/Counter1, in case ICES1 is set to zero, it is the
falling edge which is taken into account.
Clear this bit to disable this function. In this case, no connection between the Analog Comparator and the
input capture function exists
• Bit 2, 1, 0– ACnH2, ACnH1, ACnH0: Analog Comparator n Hysteresis select
These 3 bits determine the hysteresis value of the analog comparator
The different setting are shown in
Table 16-7.
AC1M2
0
0
0
0
1
1
1
1
7
0
Analog Comparator n Hysteresis selection
AC1M1
0
0
1
1
0
0
1
1
(“Timer/Counter1 Control Register B – TCCR1B” on page
6
0
AC1M0
0
1
0
1
0
1
0
1
Table
R/W
5
ACnOI
0
16-7.
4
ACnOE
R/W
0
No Hysteresis
Hysteresis + 25 mV
Hysteresis - 25 mV
Hysteresis +- 25 mV
Description
Hysteresis + 10 mV
Hysteresis - 10 mV
Hysteresis +- 10 mV
Reserved
3
AC1ICE
R/W
0
2
ACnH2
R/W
0
R/W
1
ACnH1
0
96) is set high, the rising
0
R/W
0
ACnH0
7734P–AVR–08/10
ACnECON