AT90PWM1 Atmel Corporation, AT90PWM1 Datasheet - Page 178
AT90PWM1
Manufacturer Part Number
AT90PWM1
Description
Manufacturer
Atmel Corporation
Specifications of AT90PWM1
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
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
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
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18.2.2
178
AT90PWM1
Analog Comparator 2 Control Register – AC2CON
These 2 bits determine the sensitivity of the interrupt trigger.
The different setting are shown in
Table 56. Interrupt sensitivity selection
• Bit 2, 1, 0– AC0M2, AC0M1, AC0M0: Analog Comparator 0 Multiplexer register
These 3 bits determine the input of the negative input of the analog comparator.
The different setting are shown in
Table 57. Analog Comparator 0 negative input selection
Bit
Read/Write
Initial Value
• Bit 7– AC2EN: Analog Comparator 2 Enable Bit
Set this bit to enable the analog comparator 2.
Clear this bit to disable the analog comparator 2.
• Bit 6– AC2IE: Analog Comparator 2 Interrupt Enable bit
Set this bit to enable the analog comparator 2 interrupt.
Clear this bit to disable the analog comparator 2 interrupt.
• Bit 5, 4– AC2IS1, AC2IS0: Analog Comparator 2 Interrupt Select bit
AC0IS1
0
0
1
1
AC0M2
0
0
0
0
1
1
1
1
AC0IS0
0
1
0
1
AC0M1
0
0
1
1
0
0
1
1
AC2EN
R/W
7
0
AC2IE
R/W
6
0
Description
Comparator Interrupt on output toggle
Reserved
Comparator interrupt on output falling edge
Comparator interrupt on output rising edge
AC0M0
0
1
0
1
0
1
0
1
AC2IS1
Table
Table
R/W
5
0
56.
57.
AC2IS0
Description
“Vref”/6.40
“Vref”/3.20
“Vref”/2.13
“Vref”/1.60
Analog Comparator Negative Input (ACMPM pin)
Reserved
Reserved
Reserved
R/W
4
0
3
0
-
AC2M2
R/W
2
0
AC2M1
R/W
1
0
AC2M0
R/W
0
0
4378C–AVR–09/08
AC2CON
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