AT90PWM81-16SN Atmel, AT90PWM81-16SN Datasheet - Page 229
AT90PWM81-16SN
Manufacturer Part Number
AT90PWM81-16SN
Description
IC MCU AVR 8K FLASH ISP 20SOIC
Manufacturer
Atmel
Series
AVR® 90PWM Lightingr
Datasheet
1.AT90PWM81-16MN.pdf
(325 pages)
Specifications of AT90PWM81-16SN
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI
Peripherals
Brown-out Detect/Reset, PWM, WDT
Number Of I /o
16
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
20-SOIC (7.5mm Width)
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
SPI
Maximum Clock Frequency
16 MHz
Number Of Timers
1
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
On-chip Dac
10 bit, 1 Channel
Height
2.35 mm
Length
13 mm
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.7 V
Width
7.6 mm
For Use With
ATSTK600-SOIC - STK600 SOCKET/ADAPTER FOR SOIC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT90PWM81-16SN
Manufacturer:
Atmel
Quantity:
1 500
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18.4.2
18.4.2.1
18.4.2.2
7734P–AVR–08/10
Digital to Analog Converter input Register – DACH and DACL
DALA = 0
DALA = 1
Table 18-1.
• Bit 2 – DALA: Digital to Analog Left Adjust
Set this bit to left adjust the DAC input data.
Clear it to right adjust the DAC input data.
The DALA bit affects the configuration of the DAC data registers. Changing this bit affects the DAC out-
put on the next DACH writing.
• Bit 1 – Reserved
.
• Bit 0 – DAEN: Digital to Analog Enable bit
Set this bit to enable the DAC,
Clear it to disable the DAC.
DACH and DACL registers contain the value to be converted into analog voltage.
Writing the DACL register forbid the update of the input value until DACH has not been written too. So
the normal way to write a 10-bit value in the DAC register is firstly to write DACL the DACH.
In order to work easily with only 8 bits, there is the possibility to left adjust the input value. Like this it is
sufficient to write DACH to update the DAC value.
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
DATS2
1
1
1
1
DATS1
0
0
1
1
DAC Auto Trigger source selection (Continued)
7
-
DAC7
R/W
R/W
0
0
7
DAC9
DAC1
R/W
R/W
0
0
6
-
DAC6
R/W
R/W
0
0
6
DAC8
DAC0
R/W
R/W
0
0
DATS0
0
1
0
1
5
-
DAC5
R/W
R/W
0
0
5
DAC7
-
R/W
R/W
0
0
Description
Reserved
Reserved
Timer/Counter1 Overflow
Timer/Counter1 Capture Event
4
-
DAC4
R/W
R/W
0
0
4
DAC6
-
R/W
R/W
0
0
3
-
DAC3
R/W
R/W
0
0
3
DAC5
-
R/W
R/W
0
0
2
-
DAC2
R/W
R/W
0
0
2
DAC4
-
R/W
R/W
0
0
1
DAC9
DAC1
R/W
R/W
0
0
1
DAC3
-
R/W
R/W
0
0
AT90PWM81
0
DAC8
DAC0
R/W
R/W
0
0
0
DAC2
-
R/W
R/W
0
0
DACH
DACL
DACH
DACL
229
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