AT90PWM1 Atmel Corporation, AT90PWM1 Datasheet - Page 198

• Manufacturer Part Number: AT90PWM1
• Manufacturer: Atmel Corporation

Specifications of AT90PWM1

• Flash (kbytes): 8 Kbytes
• Pin Count: 24
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 8
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 19
• Ext Interrupts: 4
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 125
• Analog Comparators: 2
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 0.5
• 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: 4
• Output Compare Channels: 12
• Input Capture Channels: 1
• Pwm Channels: 7
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

19.8.4
19.8.4.1
198
AT90PWM1
ADC Result Data Registers – ADCH and ADCL
ADLAR = 0
Table 19-2.
1.
When an ADC conversion is complete, the conversion results are stored in these two result data
registers.
When the ADCL register is read, the two ADC result data registers can’t be updated until the
ADCH register has also been read.
Consequently, in 10-bit configuration, the ADCL register must be read first before the ADCH.
Nevertheless, to work easily with only 8-bit precision, there is the possibility to left adjust the
result thanks to the ADLAR bit in the ADCSRA register. Like this, it is sufficient to only read
ADCH to have the conversion result.
Bit
Read/Write
Initial Value
ADTS3
1
1
1
1
For trigger on any PSC event, if the PSC uses the PLL clock, the core must use PLL/4 clock
source.
ADC Auto Trigger Source Selection for amplified conversions
ADTS2
1
1
1
1
ADC7
7
R
R
0
0
-
ADC6
R
R
6
0
0
-
ADTS1
0
0
1
1
ADC5
R
R
5
0
0
-
0
1
0
1
ADC4
ADTS0
R
R
4
0
0
-
ADC3
3
R
R
0
0
-
Description
Reserved
Reserved
Reserved
Reserved
ADC2
R
R
2
0
0
-
ADC9
ADC1
R
R
1
0
0
ADC8
ADC0
R
R
0
0
0
4378C–AVR–09/08
ADCH
ADCL