AT90PWM3B-16SUR Atmel, AT90PWM3B-16SUR Datasheet - Page 229

• Manufacturer Part Number: AT90PWM3B-16SUR
• Description: MCU AVR 8K FLASH 16MHA 32SOIC
• Manufacturer: Atmel
• Series: AVR® 90PWM Lightingr

Specifications of AT90PWM3B-16SUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 27
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b; D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 32-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

20.2.3
4317J–AVR–08/10
Analog Comparator 2 Control Register – AC2CON
These 2 bits determine the sensitivity of the interrupt trigger.
The different setting are shown in
Table 20-3.
• 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 comparator 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 interrupt. 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
rising edge of AC1O 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 Compara-
tor and the input capture function exists.
• Bit 2, 1, 0– AC1M2, AC1M1, AC1M0: Analog Comparator 1 Multiplexer register
These 3 bits determine the input of the negative input of the analog comparator.
The different setting are shown in
Table 20-4.
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.
AC1IS1
0
0
1
1
AC1M2
0
0
0
0
1
1
1
1
Interrupt sensitivity selection
Analog Comparator 1 negative input selection
AC1IS0
0
1
0
1
AC1M1
0
0
1
1
0
0
1
1
AC2EN
R/W
7
0
(“Timer/Counter1 Control Register B – TCCR1B” on page
AC2IE
R/W
6
0
Description
Comparator Interrupt on output toggle
Reserved
Comparator interrupt on output falling edge
Comparator interrupt on output rising edge
AC1M0
0
1
0
1
0
1
0
1
AC2IS1
Table
Table
R/W
5
0
20-1.
20-4.
AC2IS0
Description
“Vref”/6.40
“Vref”/3.20
“Vref”/2.13
“Vref”/1.60
Analog Comparator Negative Input (ACMPM pin)
DAC result
Reserved
Reserved
R/W
4
0
3
0
-
AT90PWM2/3/2B/3B
AC2M2
R/W
2
0
AC2M1
R/W
1
0
125) is set high, the
AC2M0
R/W
0
0
AC2CON
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