ATmega169P Atmel Corporation, ATmega169P Datasheet - Page 232

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ATmega169P

Manufacturer Part Number
ATmega169P
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATmega169P

Flash (kbytes)
16 Kbytes
Pin Count
64
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
54
Ext Interrupts
17
Usb Speed
No
Usb Interface
No
Spi
2
Twi (i2c)
1
Uart
1
Segment Lcd
100
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
1
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
Yes
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8 to 5.5
Operating Voltage (vcc)
1.8 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
4
Input Capture Channels
1
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes

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22.9.3
22.9.3.1
22.9.3.2
8018P–AVR–08/10
ADCL and ADCH – ADC Data Register
ADLAR = 0
ADLAR = 1
Table 22-5.
When an ADC conversion is complete, the result is found in these two registers.When ADCL is
read, the ADC Data Register is not updated until ADCH is read. Consequently, if the result is left
adjusted and no more than 8-bit precision is required, it is sufficient to read ADCH. Otherwise,
ADCL must be read first, then ADCH.
The ADLAR bit in ADMUX, and the MUXn bits in ADMUX affect the way the result is read from
the registers. If ADLAR is set, the result is left adjusted. If ADLAR is cleared (default), the result
is right adjusted.
• ADC9:0: ADC Conversion Result
These bits represent the result from the conversion, as detailed in
page
Bit
(0x79)
(0x78)
Read/Write
Initial Value
Bit
Read/Write
Initial Value
227.
ADPS2
0
0
0
0
1
1
1
1
ADC Prescaler Selections
ADC7
ADC9
ADC1
15
15
7
R
R
0
0
7
R
R
0
0
ADC6
ADC8
ADC0
14
14
ADPS1
R
R
R
R
6
0
0
6
0
0
0
0
1
1
0
0
1
1
ADC5
ADC7
13
13
R
R
R
R
5
0
0
5
0
0
ADC4
ADC6
12
12
R
R
R
R
4
0
0
4
0
0
ADPS0
0
1
0
1
0
1
0
1
ADC3
ADC5
11
11
R
R
R
R
3
0
0
3
0
0
ADC2
ADC4
10
10
R
R
R
R
2
0
0
2
0
0
”ADC Conversion Result” on
ADC9
ADC1
ADC3
ATmega169P
Division Factor
R
R
R
R
9
1
0
0
9
1
0
0
128
16
32
64
2
2
4
8
ADC8
ADC0
ADC2
R
R
R
R
8
0
0
0
8
0
0
0
ADCH
ADCL
ADCH
ADCL
232

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