ATmega32C1 Automotive Atmel Corporation, ATmega32C1 Automotive Datasheet - Page 262
ATmega32C1 Automotive
Manufacturer Part Number
ATmega32C1 Automotive
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT90CAN128_AUTOMOTIVE.pdf
(225 pages)
2.ATMEGA16M1_AUTOMOTIVE.pdf
(12 pages)
3.ATMEGA16M1_AUTOMOTIVE.pdf
(25 pages)
4.ATMEGA16M1_AUTOMOTIVE.pdf
(367 pages)
Specifications of ATmega32C1 Automotive
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 150
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
4
Input Capture Channels
1
Pwm Channels
4
32khz Rtc
No
Calibrated Rc Oscillator
Yes
- AT90CAN128_AUTOMOTIVE PDF datasheet
- ATMEGA16M1_AUTOMOTIVE PDF datasheet #2
- ATMEGA16M1_AUTOMOTIVE PDF datasheet #3
- ATMEGA16M1_AUTOMOTIVE PDF datasheet #4
- Current page: 262 of 367
- Download datasheet (7Mb)
20. Analog Comparator
20.1
20.2
262
Features
Overview
Atmel ATmega16/32/64/M1/C1
The Analog Comparator compares the input values on the positive pin ACMPx and negative
pin ACMPM or ACMPMx.
•
•
•
•
The ATmega16/32/64/M1/C1 features 4 fast analog comparators.
Each comparator has a dedicated input on the positive input, and the negative input of each
comparator can be configured as:
When the voltage on the positive ACMPn pin is higher than the voltage selected by the ACnM
multiplexer on the negative input, the Analog Comparator output, ACnO, is set.
The comparator is a clocked comparator. The comparators can run with a clock frequency of
up to 16MHz (typical value) when the supply voltage is in the 4.5V-5.5V range and with a clock
frequency of up to 8MHz (typical value) otherwise.
Each comparator can trigger a separate interrupt, exclusive to the Analog Comparator. In
addition, the user can select Interrupt triggering on comparator output rise, fall or toggle.
The interrupt flags can also be used to synchronize ADC or DAC conversions.
Moreover, the comparator’s output of the comparator 1 can be set to trigger the
Timer/Counter1 Input Capture function.
A block diagram of the four comparators and their surrounding logic is shown in
• a steady value among the 4 internal reference levels defined by the Vref selected thanks to
• a value generated from the internal DAC
• an external analog input ACMPMx.
4 Analog Comparators
High Speed Clocked Comparators
4 reference levels
Generation of Configurable Interrupts
the REFS1:0 bits in ADMUX register.
7647G–AVR–09/11
Figure
20-1.
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