ATTINY25-15MZ Atmel, ATTINY25-15MZ Datasheet - Page 90
![MCU AVR 2K FLASH 15MHZ 20-QFN](/photos/30/99/309923/qfn-20_sml.jpg)
ATTINY25-15MZ
Manufacturer Part Number
ATTINY25-15MZ
Description
MCU AVR 2K FLASH 15MHZ 20-QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY25-15MZ.pdf
(196 pages)
Specifications of ATTINY25-15MZ
Package / Case
20-QFN
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Speed
16MHz
Number Of I /o
6
Eeprom Size
128 x 8
Core Processor
AVR
Program Memory Type
FLASH
Ram Size
128 x 8
Program Memory Size
2KB (2K x 8)
Data Converters
A/D 4x10b
Oscillator Type
Internal
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Connectivity
USI
Core Size
8-Bit
Processor Series
ATTINY2x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
128 B
Interface Type
UART, SPI, USI
Maximum Clock Frequency
16 MHz
Number Of Programmable I/os
6
Number Of Timers
2
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 4 Channel
Data Rom Size
128 B
A/d Bit Size
10 bit
A/d Channels Available
4
Height
0.75 mm
Length
4 mm
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.7 V
Width
4 mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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14.1.11
90
ATtiny25/45/85
Timer/Counter1 in PWM Mode
When the PWM mode is selected, Timer/Counter1 and the Output Compare Register C -
OCR1C form a dual 8-bit, free-running and glitch-free PWM generator with outputs on the
PB1(OC1A) and PB3(OC1B) pins and inverted outputs on pins PB0(OC1A) and PB2(OC1B). As
default non-overlapping times for complementary output pairs are zero, but they can be inserted
using a Dead Time Generator (see description on page 100).
Figure 14-4. The PWM Output Pair
When the counter value match the contents of OCR1A or OCR1B, the OC1A and OC1B outputs
are set or cleared according to the COM1A1/COM1A0 or COM1B1/COM1B0 bits in the
Timer/Counter1 Control Register A - TCCR1, as shown in
Timer/Counter1 acts as an up-counter, counting from $00 up to the value specified in the output
compare register OCR1C, and starting from $00 up again. A compare match with OC1C will set
an overflow interrupt flag (TOV1) after a synchronization delay following the compare event.
Table 14-4.
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
example.
COM11
0
0
1
1
PWM1x
PWM1x
Compare Mode Select in PWM Mode
t
non-overlap
COM10
0
1
0
1
=0
Effect on Output Compare Pins
OC1x not connected.
OC1x not connected.
OC1x cleared on compare match. Set whenTCNT1 = $01.
OC1x set on compare match. Cleared when TCNT1 = $00.
OC1x cleared on compare match. Set when TCNT1 = $01.
OC1x not connected.
OC1x Set on compare match. Cleared when TCNT1= $01.
OC1x not connected.
t
non-overlap
=0
x = A or B
Table
14-4.
Figure 14-5
7598H–AVR–07/09
for an
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