ATmega32M1 Atmel Corporation, ATmega32M1 Datasheet - Page 258
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ATmega32M1
Manufacturer Part Number
ATmega32M1
Description
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
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Manufacturer:
ATMEL
Quantity:
1 448
Part Number:
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Manufacturer:
ATMEL/爱特梅尔
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Company:
Part Number:
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Manufacturer:
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Quantity:
210
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23.4.3
258
ATmega16M1/32M1/64M1
AC2CON – Analog Comparator 2 Control Register
In case ICES1 bit (see
the 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 2:0 – AC1M[2:0]: 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 23-4.
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.
• 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 – AC2IS[1:0]: Analog Comparator 2 Interrupt Select bit
These 2 bits determine the sensitivity of the interrupt trigger.
The different setting are shown in
AC1M[2:0]
000
001
010
011
100
101
110
111
Analog Comparator 1 negative input selection
AC2EN
R/W
7
0
“TCCR1B – Timer/Counter1 Control Register B” on page
AC2IE
R/W
6
0
AC2IS1
Table
Table 23-5 on page
R/W
Analog Comparator Negative Input (ACMPM pin)
5
0
23-4.
AC2IS0
R/W
4
0
Bandgap (1.1V)
Description
“Vref”/6.40
“Vref”/3.20
“Vref”/2.13
“Vref”/1.60
DAC result
Reserved
3
0
-
-
259.
AC2M2
R/W
2
0
AC2M1
R/W
1
0
AC2M0
R/W
125) is set high,
0
0
8209D–AVR–11/10
AC2CON
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