ATmega32M1 Automotive Atmel Corporation, ATmega32M1 Automotive Datasheet - Page 271
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ATmega32M1 Automotive
Manufacturer Part Number
ATmega32M1 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 ATmega32M1 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
14
Input Capture Channels
1
Pwm Channels
10
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: 271 of 367
- Download datasheet (7Mb)
21.2
21.3
7647G–AVR–09/11
Operation
Starting a Conversion
Figure 21-1. Digital to Analog Converter Block Schematic
The Digital to Analog Converter generates an analog signal proportional to the value of the
DAC registers value.
In order to have an accurate sampling frequency control, there is the possibility to update the
DAC input values through different trigger events.
The DAC is configured thanks to the DACON register. As soon as the DAEN bit in DACON
register is set, the DAC converts the value present on the DACH and DACL registers in accor-
dance with the register DACON setting.
Alternatively, a conversion can be triggered automatically by various sources. Auto Triggering
is enabled by setting the DAC Auto Trigger Enable bit, DAATE in DACON. The trigger source
is selected by setting the DAC Trigger Select bits, DATS in DACON (See description of the
DATS bits for a list of the trigger sources). When a positive edge occurs on the selected trigger
signal, the DAC converts the value present on the DACH and DACL registers in accordance
with the register DACON setting. This provides a method of starting conversions at fixed
intervals.
Detector
Edge
DAATE
DAC High bits
VRef
DACH
DATS2
10
DATS1
Atmel ATmega16/32/64/M1/C1
Update DAC
1
Trigger
DAC
10
0
DATS0
10
DACON
DACL
DAC Low bits
-
Result
DAC
DALA
Output
Driver
DAOE
DAEN
D2A pin
271
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