ATmega16M1 Automotive Atmel Corporation, ATmega16M1 Automotive Datasheet - Page 79
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ATmega16M1 Automotive
Manufacturer Part Number
ATmega16M1 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 ATmega16M1 Automotive
Flash (kbytes)
16 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)
1
Eeprom (bytes)
512
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: 79 of 225
- Download datasheet (4Mb)
7701E–AVR–02/11
This high frequency makes the fast PWM mode well suited for power regulation, rectification,
and DAC applications. High frequency allows the use of physically smaller external compo-
nents (coils, capacitors, etc.), and hence reduces total system cost.
In fast PWM mode, the counter is incremented until the counter value matches the TOP value.
The counter is then cleared at the following timer clock cycle. The timing diagram for the fast
PWM mode is shown in
shown as a histogram for illustrating the single-slope operation. The diagram includes
non-inverted and inverted PWM outputs. The small horizontal line marks on the TCNT0 slopes
represent Compare Matches between OCR0x and TCNT0.
Figure 13-6. Fast PWM Mode, Timing Diagram
The Timer/Counter Overflow Flag (TOV0) is set each time the counter reaches TOP. If the
interrupt is enabled, the interrupt handler routine can be used for updating the compare value.
In fast PWM mode, the compare unit allows generation of PWM waveforms on the OC0x pins.
Setting the COM0x1:0 bits to two will produce a non-inverted PWM, and an inverted PWM out-
put can be generated by setting the COM0x1:0 bits to three. Setting the COM0A1:0 bits to one
allows the AC0A pin to toggle on compare matches if the WGM02 bit is set. This option is not
available for the OC0B pin (See
visible on the port pin if the data direction for the port pin is set as output. The PWM waveform
is generated by setting (or clearing) the OC0x register at the compare match between OCR0x
and TCNT0, and clearing (or setting) the OC0x register at the timer clock cycle when the coun-
ter is cleared (changes from top to bottom).
The PWM frequency for the output can be calculated by the following equation:
The variable N represents the prescale factor (1, 8, 64, 256, or 1024)..
f
OCnxPWM
TCNTn
OCn
OCn
Period
=
-------------------- -
N
f
clk_I/O
1
256
Figure 13-6 on page
2
Atmel ATtiny24/44/84 [Preliminary]
3
Table 13-3 on page
4
79. The TCNT0 value is in the timing diagram
5
84). The actual OC0x value will only be
6
7
OCRnx Interrupt Flag Set
OCRnx Update and
TOVn Interrupt Flag Set
(COMnx1:0 = 2)
(COMnx1:0 = 3)
79
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