ATTINY20-XU Atmel, ATTINY20-XU Datasheet - Page 100
ATTINY20-XU
Manufacturer Part Number
ATTINY20-XU
Description
MCU AVR 2KB FLASH 12MHZ 14TSSOP
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY20-EK1.pdf
(224 pages)
Specifications of ATTINY20-XU
Core Processor
AVR
Core Size
8-Bit
Speed
12MHz
Connectivity
I²C, SPI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
12
Program Memory Size
2KB (1K x 16)
Program Memory Type
FLASH
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Processor Series
ATtiny
Core
AVR
Data Bus Width
8 bit
Data Ram Size
128 B
Interface Type
SPI, TWI
Maximum Clock Frequency
12 MHz
Number Of Programmable I/os
12
Number Of Timers
2
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Operating Temperature Range
- 40 C to + 85 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY20-XU
Manufacturer:
Atmel
Quantity:
904
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ATtiny20
Table 12-4
phase and frequency correct PWM mode.
Table 12-4.
Note:
• Bits 1:0 – WGM1[1:0]: Waveform Generation Mode
Combined with the WGM1[3:2] bits found in the TCCR1B Register, these bits control the count-
ing sequence of the counter, the source for maximum (TOP) counter value, and what type of
waveform generation to be used, see
Timer/Counter unit are: Normal mode (counter), Clear Timer on Compare match (CTC) mode,
and three types of Pulse Width Modulation (PWM) modes.
Table 12-5.
Mode
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
COM1A1
COM1B1
0
0
1
1
A special case occurs when OCR1A/OCR1B equals TOP and COM1A1/COM1B1 is set.
Correct PWM Mode” on page 90
WGM1
shows COM1x[1:0] bit functionality when WGM1[3:0] bits are set to phase correct or
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
[3:0]
Compare Output Mode, Phase Correct and Phase & Frequency Correct PWM
Waveform Generation Modes
Mode of
Operation
Normal
PWM, Phase Correct, 8-bit
PWM, Phase Correct, 9-bit
PWM, Phase Correct, 10-bit
CTC (
Fast PWM, 8-bit
Fast PWM, 9-bit
Fast PWM, 10-bit
PWM, Phase & Freq. Correct
PWM, Phase & Freq. Correct
PWM, Phase Correct
PWM, Phase Correct
CTC (
(Reserved)
Fast PWM
Fast PWM
COM1A0
COM1B0
0
1
0
1
Clear Timer on Compare
Clear Timer on Compare
Description
Normal port operation, OC1A/OC1B disconnected
WGM13=0: Normal port operation, OC1A/OC1B disconnected
WGM13=1: Toggle OC1A on Compare Match, OC1B reserved
Clear OC1A/OC1B on Compare Match when up-counting
Set OC1A/OC1B on Compare Match when downcounting
Set OC1A/OC1B on Compare Match when up-counting
Clear OC1A/OC1B on Compare Match when downcounting
for more details.
Table
12-5. Modes of operation supported by the
)
)
TOP
0xFFFF
0x00FF
0x01FF
0x03FF
OCR1A
0x00FF
0x01FF
0x03FF
ICR1
OCR1A
ICR1
OCR1A
ICR1
–
ICR1
OCR1A
(“Modes of Operation” on page
Update of
OCR1
Immediate
TOP
TOP
TOP
Immediate
TOP
TOP
TOP
BOTTOM
BOTTOM
TOP
TOP
Immediate
–
TOP
TOP
x
at
TOV1 Flag
Set on
MAX
BOTTOM
BOTTOM
BOTTOM
MAX
TOP
TOP
TOP
BOTTOM
BOTTOM
BOTTOM
BOTTOM
MAX
–
TOP
TOP
8235B–AVR–04/11
“Phase
86).
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