ATTINY26-16PI Atmel, ATTINY26-16PI Datasheet - Page 75
![IC AVR MCU 2K 16MHZ IND 20-DIP](/photos/6/80/68043/313-20-dip_sml.jpg)
ATTINY26-16PI
Manufacturer Part Number
ATTINY26-16PI
Description
IC AVR MCU 2K 16MHZ IND 20-DIP
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY26-16PI
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
16
Program Memory Size
2KB (1K x 16)
Program Memory Type
FLASH
Eeprom Size
128 x 8
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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1477K–AVR–08/10
Table 35. Compare Mode Select in PWM Mode
Note that in PWM mode, writing to the Output Compare Registers OCR1A or OCR1B, the data
value is first transferred to a temporary location. The value is latched into OCR1A or OCR1B
when the Timer/Counter reaches OCR1C. This prevents the occurrence of odd-length PWM
pulses (glitches) in the event of an unsynchronized OCR1A or OCR1B. See Figure 42 for an
example.
Figure 42. Effects of Unsynchronized OCR Latching
During the time between the write and the latch operation, a read from OCR1A or OCR1B will
read the contents of the temporary location. This means that the most recently written value
always will read out of OCR1A or OCR1B.
When OCR1A or OCR1B contain $00 or the top value, as specified in OCR1C Register, the out-
p u t P B 1 ( O C 1 A ) o r P B 3 ( O C 1 B ) i s h e l d l o w o r h i g h a c c o r d i n g t o t h e s e t t i n g s o f
COM1A1/COM1A0. This is shown in Table 36.
COM1x1
0
0
1
1
Unsynchronized OC1x Latch
Synchronized OC1x Latch
COM1x0
0
1
0
1
Effect on Output Compare Pins
OC1x not connected.
OC1x not connected.
OC1x cleared on compare match. Set when TCNT1 = $01.
OC1x set one prescaled cycle after compare match. Cleared when
TCNT1 = $00.
OC1x cleared on compare match. Set when TCNT1 = $01.
OC1x not connected.
OC1x set one prescaled cycle after compare match. Cleared when
TCNT = $00
OC1x not connected.
Glitch
Compare Value changes
Compare Value Changes
Counter Value
Compare Value
PWM Output OC1x
Counter Value
Compare Value
PWM Output OC1x
75
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