AT90PWM81-16SN Atmel, AT90PWM81-16SN Datasheet - Page 105
![IC MCU AVR 8K FLASH ISP 20SOIC](/photos/6/80/68042/453-20-soic_sml.jpg)
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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12.5.2
12.5.2.1
12.5.2.2
7734P–AVR–08/10
Running Mode Description
Four Ramp Mode
Two Ramp Mode
Waveforms and length of output signals are determined by Time Parameters (DT0, OT0, DT1, OT1) and
by the running mode. Four modes are possible :
In Four Ramp mode, each time in a cycle has its own definition
Figure 12-6.
The input clock of PSC is given by CLKPSC.
PSCOUTn0 and PSCOUTn1 signals are defined by On-Time 0, Dead-Time 0, On-Time 1 and Dead-Time
1 values with :
On-Time 0 = OCRnRAH/L * 1/Fclkpsc
On-Time 1 = OCRnRBH/L * 1/Fclkpsc
Dead-Time 0 = (OCRnSAH/L + 2) * 1/Fclkpsc
Dead-Time 1 = (OCRnSBH/L + 2) * 1/Fclkpsc
Note:
In Two Ramp mode, the whole cycle is divided in two moments
One moment for PSCn0 description with OT0 which gives the time of the whole moment
One moment for PSCn1 description with OT1 which gives the time of the whole moment
PSC Counter
PSCOUTn0
PSCOUTn1
– Four Ramp mode
– Two Ramp mode
– One Ramp mode
– Center Aligned mode
Minimal value for Dead-Time 0 and Dead-Time 1 = 2 * 1/Fclkpsc
OCRnSA
0
PSCn0 & PSCn1 Basic Waveforms in Four Ramp mode
Dead-Time 0
On-Time 0
PSC Cycle
OCRnRA
0
OCRnSB
Dead-Time 1
On-Time 1
OCRnRB
AT90PWM81
105
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