ATTINY84-15MZ Atmel, ATTINY84-15MZ Datasheet - Page 108
ATTINY84-15MZ
Manufacturer Part Number
ATTINY84-15MZ
Description
MCU AVR 8K FLASH 15MHZ 20-QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY84-15MZ
Package / Case
20-QFN Exposed Pad
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Speed
16MHz
Number Of I /o
12
Eeprom Size
512 x 8
Core Processor
AVR
Program Memory Type
FLASH
Ram Size
512 x 8
Program Memory Size
8KB (8K x 8)
Data Converters
A/D 8x10b
Oscillator Type
Internal
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Connectivity
USI
Core Size
8-Bit
Processor Series
ATTINY8x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
SPI, UART
Maximum Clock Frequency
16 MHz
Number Of Programmable I/os
12
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, 8 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY84-15MZ
Manufacturer:
ATMEL
Quantity:
480
Part Number:
ATTINY84-15MZ
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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108
Atmel ATtiny24/44/84 [Preliminary]
In inverting compare output mode, the operation is inverted. The dual-slope operation gives a
lower maximum operation frequency compared to the single-slope operation. However, due to
the symmetric feature of the dual-slope PWM modes, these modes are preferred for motor
control applications.
The main difference between the phase correct, and the phase and frequency correct PWM
mode is the time the OCR1x register is updated by the OCR1x buffer register (see
on page 106
The PWM resolution for the phase and frequency correct PWM mode can be defined by either
ICR1 or OCR1A. The minimum resolution allowed is 2 bits (ICR1 or OCR1A set to 0x0003),
and the maximum resolution is 16 bits (ICR1 or OCR1A set to max). The PWM resolution in
bits can be calculated using the following equation:
In phase and frequency correct PWM mode, the counter is incremented until the counter value
matches either the value in ICR1 (WGM13:0 = 8), or the value in OCR1A (WGM13:0 = 9). The
counter has then reached the top, and changes the count direction. The TCNT1 value will be
equal to top for one timer clock cycle. The timing diagram for the phase and frequency correct
PWM mode is shown on
rect PWM mode when OCR1A or ICR1 is used to define top. The TCNT1 value in the timing
diagram is shown as a histogram for illustrating the dual-slope operation. The diagram
includes non-inverted and inverted PWM outputs. The small horizontal lines on the TCNT1
slopes represent compare matches between OCR1x and TCNT1. The OC1x interrupt flag will
be set when a compare match occurs.
Figure 14-9. Phase and Frequency Correct PWM Mode, Timing Diagram
The timer/counter overflow flag (TOV1) is set on the same timer clock cycle on which the
OCR1x registers are updated with the double buffer value (at bottom). When either OCR1A or
ICR1 is used for defining the top value, the OC1A or ICF1 flag is set accordingly when TCNT1
has reached top. The interrupt flags can then be used to generate an interrupt each time the
counter reaches the top or bottom value.
R
PFCPWM
TCNTn
OCnx
OCnx
Period
=
and
log
---------------------------------- -
log
Figure 14-9 on page
TOP
2
1
+
1
Figure 14-9 on page
2
108).
108. The figure shows phase and frequency cor-
3
4
OCnA Interrupt Flag Set
or ICFn Interrupt Flag Set
(Interrupt on TOP)
(COMnx1:0 = 2)
(COMnx1:0 = 3)
OCRnx/TOP Updateand
TOVn Interrupt Flag Set
(Interrupt on Bottom)
7701D–AVR–09/10
Figure 14-8
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