AT90PWM316 Atmel Corporation, AT90PWM316 Datasheet - Page 250
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AT90PWM316
Manufacturer Part Number
AT90PWM316
Description
Manufacturer
Atmel Corporation
Specifications of AT90PWM316
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
4
Usb Speed
No
Usb Interface
No
Spi
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
11
Adc Resolution (bits)
10
Adc Speed (ksps)
125
Analog Comparators
3
Resistive Touch Screen
No
Dac Channels
1
Dac Resolution (bits)
10
Temp. Sensor
No
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 105
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
5
Output Compare Channels
16
Input Capture Channels
1
Pwm Channels
12
32khz Rtc
No
Calibrated Rc Oscillator
Yes
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7710F–AVR–09/11
These 2 bits determine the voltage reference for the ADC.
The different setting are shown in
Table 21-3.
If these bits are changed during a conversion, the change will not take effect until this conversion
is complete (it means while the ADIF bit in ADCSRA register is set).
In case the internal Vref is selected, it is turned ON as soon as an analog feature needed it is
set.
• Bit 5 – ADLAR: ADC Left Adjust Result
Set this bit to left adjust the ADC result.
Clear it to right adjust the ADC result.
The ADLAR bit affects the configuration of the ADC result data registers. Changing this bit
affects the ADC data registers immediately regardless of any on going conversion. For a com-
plete description of this bit, see Section “ADC Result Data Registers – ADCH and ADCL”,
page 253.
• Bit 3, 2, 1, 0 – MUX3, MUX2, MUX1, MUX0: ADC Channel Selection Bits
These 4 bits determine which analog inputs are connected to the ADC input. The different set-
ting are shown in
Table 21-4.
REFS1
0
0
1
1
MUX3
0
0
0
0
0
0
0
0
1
1
1
1
1
ADC Voltage Reference Selection
ADC Input Channel Selection
REFS0
0
1
0
1
MUX2
0
0
0
0
1
1
1
1
0
0
0
0
1
Table
21-4.
Description
External Vref on AREF pin, Internal Vref is switched off
AVcc with external capacitor connected on the AREF pin
Reserved
Internal 2.56V Reference voltage with external capacitor connected on
the AREF pin
MUX1
0
0
1
1
0
0
1
1
0
0
1
1
0
Table
21-3.
MUX0
0
1
0
1
0
1
0
1
0
1
0
1
0
Description
ADC0
ADC1
ADC2
ADC3
ADC4
ADC5
ADC6
ADC7
ADC8
ADC9
ADC10
AMP0
AMP1 (- is ADC8, + is ADC9)
AT90PWM216/316
250
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