ATmega32M1 Atmel Corporation, ATmega32M1 Datasheet - Page 257

• Manufacturer Part Number: ATmega32M1
• Manufacturer: Atmel Corporation

Specifications of ATmega32M1

• Flash (kbytes): 32 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 12
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 27
• Ext Interrupts: 27
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Uart: 1
• Can: 1
• Lin: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 11
• Adc Resolution (bits): 10
• Adc Speed (ksps): 125
• Analog Comparators: 4
• Resistive Touch Screen: No
• Dac Channels: 1
• Dac Resolution (bits): 10
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 2
• Eeprom (bytes): 1024
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 14
• Input Capture Channels: 1
• Pwm Channels: 10
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

23.4.2
8209D–AVR–11/10
AC1CON – Analog Comparator 1Control Register
Table 23-2.
Bit
Read/Write
Initial Value
• Bit 7– AC1EN: Analog Comparator 1 Enable Bit
Set this bit to enable the analog comparator 1.
Clear this bit to disable the analog comparator 1.
• Bit 6– AC1IE: Analog Comparator 1 Interrupt Enable bit
Set this bit to enable the analog comparator 1 interrupt.
Clear this bit to disable the analog comparator 1 interrupt.
• Bit 5:4– AC1IS[1:0]: Analog Comparator 1 Interrupt Select bit
These 2 bits determine the sensitivity of the interrupt trigger.
The different setting are shown in
Table 23-3.
• 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.
AC1IS[1:0]
AC0M[2:0]
00
01
10
11
000
001
010
000
111
101
110
111
Analog Comparator 0 negative input selection
Interrupt sensitivity selection
AC1EN
R/W
7
0
AC1IE
R/W
6
0
AC1IS1
Table
R/W
5
0
Analog Comparator Negative Input (ACMPM pin)
Comparator interrupt on output falling edge
Comparator interrupt on output rising edge
Comparator Interrupt on output toggle
23-3.
AC1IS0
R/W
4
0
ATmega16M1/32M1/64M1
Description
Bandgap (1.1V)
AC1ICE
Reserved
Description
R/W
“Vref”/6.40
“Vref”/3.20
“Vref”/2.13
“Vref”/1.60
DAC result
Reserved
3
0
AC1M2
R/W
2
0
AC1M1
R/W
1
0
AC1M0
R/W
0
0
AC1CON
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